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Bourgoin C, Ceccherini G, Girardello M, Vancutsem C, Avitabile V, Beck PSA, Beuchle R, Blanc L, Duveiller G, Migliavacca M, Vieilledent G, Cescatti A, Achard F. Human degradation of tropical moist forests is greater than previously estimated. Nature 2024:10.1038/s41586-024-07629-0. [PMID: 38961293 DOI: 10.1038/s41586-024-07629-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Accepted: 05/30/2024] [Indexed: 07/05/2024]
Abstract
Tropical forest degradation from selective logging, fire and edge effects is a major driver of carbon and biodiversity loss1-3, with annual rates comparable to those of deforestation4. However, its actual extent and long-term impacts remain uncertain at global tropical scale5. Here we quantify the magnitude and persistence of multiple types of degradation on forest structure by combining satellite remote sensing data on pantropical moist forest cover changes4 with estimates of canopy height and biomass from spaceborne6 light detection and ranging (LiDAR). We estimate that forest height decreases owing to selective logging and fire by 15% and 50%, respectively, with low rates of recovery even after 20 years. Agriculture and road expansion trigger a 20% to 30% reduction in canopy height and biomass at the forest edge, with persistent effects being measurable up to 1.5 km inside the forest. Edge effects encroach on 18% (approximately 206 Mha) of the remaining tropical moist forests, an area more than 200% larger than previously estimated7. Finally, degraded forests with more than 50% canopy loss are significantly more vulnerable to subsequent deforestation. Collectively, our findings call for greater efforts to prevent degradation and protect already degraded forests to meet the conservation pledges made at recent United Nations Climate Change and Biodiversity conferences.
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Affiliation(s)
- C Bourgoin
- European Commission, Joint Research Centre, Ispra, Italy.
| | - G Ceccherini
- European Commission, Joint Research Centre, Ispra, Italy
| | - M Girardello
- European Commission, Joint Research Centre, Ispra, Italy
| | - C Vancutsem
- European Commission, Joint Research Centre, Ispra, Italy
| | - V Avitabile
- European Commission, Joint Research Centre, Ispra, Italy
| | - P S A Beck
- European Commission, Joint Research Centre, Ispra, Italy
| | - R Beuchle
- European Commission, Joint Research Centre, Ispra, Italy
| | - L Blanc
- CIRAD, Forêts et Sociétés, Montpellier, France
- Forêts et Sociétés, Univ Montpellier, CIRAD, Montpellier, France
| | - G Duveiller
- Max Planck Institute for Biogeochemistry, Jena, Germany
| | - M Migliavacca
- European Commission, Joint Research Centre, Ispra, Italy
| | - G Vieilledent
- CIRAD, UMR AMAP, Montpellier, France
- AMAP, Univ Montpellier, CIRAD, CNRS, INRAE, IRD, Montpellier, France
| | - A Cescatti
- European Commission, Joint Research Centre, Ispra, Italy
| | - F Achard
- European Commission, Joint Research Centre, Ispra, Italy
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2
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Cooper DLM, Lewis SL, Sullivan MJP, Prado PI, Ter Steege H, Barbier N, Slik F, Sonké B, Ewango CEN, Adu-Bredu S, Affum-Baffoe K, de Aguiar DPP, Ahuite Reategui MA, Aiba SI, Albuquerque BW, de Almeida Matos FD, Alonso A, Amani CA, do Amaral DD, do Amaral IL, Andrade A, de Andrade Miranda IP, Angoboy IB, Araujo-Murakami A, Arboleda NC, Arroyo L, Ashton P, Aymard C GA, Baider C, Baker TR, Balinga MPB, Balslev H, Banin LF, Bánki OS, Baraloto C, Barbosa EM, Barbosa FR, Barlow J, Bastin JF, Beeckman H, Begne S, Bengone NN, Berenguer E, Berry N, Bitariho R, Boeckx P, Bogaert J, Bonyoma B, Boundja P, Bourland N, Boyemba Bosela F, Brambach F, Brienen R, Burslem DFRP, Camargo JL, Campelo W, Cano A, Cárdenas S, Cárdenas López D, de Sá Carpanedo R, Carrero Márquez YA, Carvalho FA, Casas LF, Castellanos H, Castilho CV, Cerón C, Chapman CA, Chave J, Chhang P, Chutipong W, Chuyong GB, Cintra BBL, Clark CJ, Coelho de Souza F, Comiskey JA, Coomes DA, Cornejo Valverde F, Correa DF, Costa FRC, Costa JBP, Couteron P, Culmsee H, Cuni-Sanchez A, Dallmeier F, Damasco G, Dauby G, Dávila N, Dávila Doza HP, De Alban JDT, de Assis RL, De Canniere C, De Haulleville T, de Jesus Veiga Carim M, Demarchi LO, Dexter KG, Di Fiore A, Din HHM, Disney MI, Djiofack BY, Djuikouo MNK, Do TV, Doucet JL, Draper FC, Droissart V, Duivenvoorden JF, Engel J, Estienne V, Farfan-Rios W, Fauset S, Feeley KJ, Feitosa YO, Feldpausch TR, Ferreira C, Ferreira J, Ferreira LV, Fletcher CD, Flores BM, Fofanah A, Foli EG, Fonty É, Fredriksson GM, Fuentes A, Galbraith D, Gallardo Gonzales GP, Garcia-Cabrera K, García-Villacorta R, Gomes VHF, Gómez RZ, Gonzales T, Gribel R, Guedes MC, Guevara JE, Hakeem KR, Hall JS, Hamer KC, Hamilton AC, Harris DJ, Harrison RD, Hart TB, Hector A, Henkel TW, Herbohn J, Hockemba MBN, Hoffman B, Holmgren M, Honorio Coronado EN, Huamantupa-Chuquimaco I, Hubau W, Imai N, Irume MV, Jansen PA, Jeffery KJ, Jimenez EM, Jucker T, Junqueira AB, Kalamandeen M, Kamdem NG, Kartawinata K, Kasongo Yakusu E, Katembo JM, Kearsley E, Kenfack D, Kessler M, Khaing TT, Killeen TJ, Kitayama K, Klitgaard B, Labrière N, Laumonier Y, Laurance SGW, Laurance WF, Laurent F, Le TC, Le TT, Leal ME, Leão de Moraes Novo EM, Levesley A, Libalah MB, Licona JC, Lima Filho DDA, Lindsell JA, Lopes A, Lopes MA, Lovett JC, Lowe R, Lozada JR, Lu X, Luambua NK, Luize BG, Maas P, Magalhães JLL, Magnusson WE, Mahayani NPD, Makana JR, Malhi Y, Maniguaje Rincón L, Mansor A, Manzatto AG, Marimon BS, Marimon-Junior BH, Marshall AR, Martins MP, Mbayu FM, de Medeiros MB, Mesones I, Metali F, Mihindou V, Millet J, Milliken W, Mogollón HF, Molino JF, Mohd Said MN, Monteagudo Mendoza A, Montero JC, Moore S, Mostacedo B, Mozombite Pinto LF, Mukul SA, Munishi PKT, Nagamasu H, Nascimento HEM, Nascimento MT, Neill D, Nilus R, Noronha JC, Nsenga L, Núñez Vargas P, Ojo L, Oliveira AA, de Oliveira EA, Ondo FE, Palacios Cuenca W, Pansini S, Pansonato MP, Paredes MR, Paudel E, Pauletto D, Pearson RG, Pena JLM, Pennington RT, Peres CA, Permana A, Petronelli P, Peñuela Mora MC, Phillips JF, Phillips OL, Pickavance G, Piedade MTF, Pitman NCA, Ploton P, Popelier A, Poulsen JR, Prieto A, Primack RB, Priyadi H, Qie L, Quaresma AC, de Queiroz HL, Ramirez-Angulo H, Ramos JF, Reis NFC, Reitsma J, Revilla JDC, Riutta T, Rivas-Torres G, Robiansyah I, Rocha M, Rodrigues DDJ, Rodriguez-Ronderos ME, Rovero F, Rozak AH, Rudas A, Rutishauser E, Sabatier D, Sagang LB, Sampaio AF, Samsoedin I, Satdichanh M, Schietti J, Schöngart J, Scudeller VV, Seuaturien N, Sheil D, Sierra R, Silman MR, Silva TSF, da Silva Guimarães JR, Simo-Droissart M, Simon MF, Sist P, Sousa TR, de Sousa Farias E, de Souza Coelho L, Spracklen DV, Stas SM, Steinmetz R, Stevenson PR, Stropp J, Sukri RS, Sunderland TCH, Suzuki E, Swaine MD, Tang J, Taplin J, Taylor DM, Tello JS, Terborgh J, Texier N, Theilade I, Thomas DW, Thomas R, Thomas SC, Tirado M, Toirambe B, de Toledo JJ, Tomlinson KW, Torres-Lezama A, Tran HD, Tshibamba Mukendi J, Tumaneng RD, Umaña MN, Umunay PM, Urrego Giraldo LE, Valderrama Sandoval EH, Valenzuela Gamarra L, Van Andel TR, van de Bult M, van de Pol J, van der Heijden G, Vasquez R, Vela CIA, Venticinque EM, Verbeeck H, Veridiano RKA, Vicentini A, Vieira ICG, Vilanova Torre E, Villarroel D, Villa Zegarra BE, Vleminckx J, von Hildebrand P, Vos VA, Vriesendorp C, Webb EL, White LJT, Wich S, Wittmann F, Zagt R, Zang R, Zartman CE, Zemagho L, Zent EL, Zent S. Consistent patterns of common species across tropical tree communities. Nature 2024; 625:728-734. [PMID: 38200314 PMCID: PMC10808064 DOI: 10.1038/s41586-023-06820-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2022] [Accepted: 11/01/2023] [Indexed: 01/12/2024]
Abstract
Trees structure the Earth's most biodiverse ecosystem, tropical forests. The vast number of tree species presents a formidable challenge to understanding these forests, including their response to environmental change, as very little is known about most tropical tree species. A focus on the common species may circumvent this challenge. Here we investigate abundance patterns of common tree species using inventory data on 1,003,805 trees with trunk diameters of at least 10 cm across 1,568 locations1-6 in closed-canopy, structurally intact old-growth tropical forests in Africa, Amazonia and Southeast Asia. We estimate that 2.2%, 2.2% and 2.3% of species comprise 50% of the tropical trees in these regions, respectively. Extrapolating across all closed-canopy tropical forests, we estimate that just 1,053 species comprise half of Earth's 800 billion tropical trees with trunk diameters of at least 10 cm. Despite differing biogeographic, climatic and anthropogenic histories7, we find notably consistent patterns of common species and species abundance distributions across the continents. This suggests that fundamental mechanisms of tree community assembly may apply to all tropical forests. Resampling analyses show that the most common species are likely to belong to a manageable list of known species, enabling targeted efforts to understand their ecology. Although they do not detract from the importance of rare species, our results open new opportunities to understand the world's most diverse forests, including modelling their response to environmental change, by focusing on the common species that constitute the majority of their trees.
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Affiliation(s)
- Declan L M Cooper
- Department of Geography, University College London, London, UK.
- Centre for Biodiversity and Environment Research, Department of Genetics, Evolution and Environment, University College London, London, UK.
| | - Simon L Lewis
- Department of Geography, University College London, London, UK.
- School of Geography, University of Leeds, Leeds, UK.
| | - Martin J P Sullivan
- School of Geography, University of Leeds, Leeds, UK
- Department of Natural Sciences, Manchester Metropolitan University, Manchester, UK
| | - Paulo I Prado
- Instituto de Biociências, Departamento de Ecologia, Universidade de Sao Paulo (USP), São Paulo, Brazil
| | - Hans Ter Steege
- Naturalis Biodiversity Center, Leiden, The Netherlands
- Quantitative Biodiversity Dynamics, Department of Biology, Utrecht University, Utrecht, The Netherlands
| | - Nicolas Barbier
- AMAP, Université de Montpellier, IRD, Cirad, CNRS, INRAE, Montpellier, France
- International Joint Laboratory DYCOFAC, IRD-UYI-IRGM, Yaoundé, Cameroon
| | - Ferry Slik
- Environmental and Life Sciences, Faculty of Science, Universiti Brunei Darussalam, Gadong, Brunei Darussalam
| | - Bonaventure Sonké
- International Joint Laboratory DYCOFAC, IRD-UYI-IRGM, Yaoundé, Cameroon
- Plant Systematics and Ecology Laboratory, Higher Teachers' Training College, University of Yaoundé I, Yaoundé, Cameroon
| | - Corneille E N Ewango
- Faculty of Renewable Natural Resources Management and Faculty of Sciences, University of Kisangani, Kisangani, Democratic Republic of the Congo
| | | | | | - Daniel P P de Aguiar
- Procuradoria-Geral de Justiça, Ministério Público do Estado do Amazonas, Manaus, Brazil
- Instituto Nacional de Pesquisas da Amazônia (INPA), Manaus, Brazil
| | | | - Shin-Ichiro Aiba
- Faculty of Environmental Earth Science, Hokkaido University, Sapporo, Japan
| | - Bianca Weiss Albuquerque
- Ecology, Monitoring and Sustainable Use of Wetlands (MAUA), Instituto Nacional de Pesquisas da Amazônia (INPA), Manaus, Brazil
| | | | - Alfonso Alonso
- Center for Conservation and Sustainability, Smithsonian Conservation Biology Institute, Washington, DC, USA
| | - Christian A Amani
- Center for International Forestry Research (CIFOR), Bogor, Indonesia
- Université Officielle de Bukavu, Bukavu, Democratic Republic of the Congo
| | | | - Iêda Leão do Amaral
- Coordenação de Biodiversidade, Instituto Nacional de Pesquisas da Amazônia (INPA), Manaus, Brazil
| | - Ana Andrade
- Projeto Dinâmica Biológica de Fragmentos Florestais, Instituto Nacional de Pesquisas da Amazônia (INPA), Manaus, Brazil
| | | | - Ilondea B Angoboy
- Institut National pour l'Etude et la Recherche Agronomiques, Bukavu, Democratic Republic of the Congo
| | - Alejandro Araujo-Murakami
- Museo de Historia Natural Noel Kempff Mercado, Universidad Autónoma Gabriel Rene Moreno, Santa Cruz, Santa Cruz, Bolivia
| | | | - Luzmila Arroyo
- Museo de Historia Natural Noel Kempff Mercado, Universidad Autónoma Gabriel Rene Moreno, Santa Cruz, Santa Cruz, Bolivia
| | - Peter Ashton
- Bullard Emeritus Professor of Forestry, Harvard University, Cambridge, MA, USA
| | - Gerardo A Aymard C
- Programa de Ciencias del Agro y el Mar, Herbario Universitario (PORT), UNELLEZ-Guanare, Guanare, Venezuela
| | - Cláudia Baider
- The Mauritius Herbarium, Agricultural Services, Ministry of Agro-Industry and Food Security, Reduit, Mauritius
- Instituto de Biociências, Departamento de Ecologia, Universidade de São Paulo (USP), São Paulo, Brazil
| | | | | | - Henrik Balslev
- Department of Biology, Aarhus University, Aarhus C, Aarhus, Denmark
| | | | - Olaf S Bánki
- Naturalis Biodiversity Center, Leiden, The Netherlands
| | - Chris Baraloto
- International Center for Tropical Botany, Department of Biological Sciences, Florida International University, Miami, FL, USA
| | | | | | - Jos Barlow
- Lancaster Environment Centre, Lancaster University, Lancaster, UK
| | - Jean-Francois Bastin
- TERRA Teaching and Research Centre, Gembloux Agro-Bio Tech, University of Liege, Gembloux, Belgium
| | - Hans Beeckman
- Service of Wood Biology, Royal Museum for Central Africa, Tervuren, Belgium
| | - Serge Begne
- School of Geography, University of Leeds, Leeds, UK
- International Joint Laboratory DYCOFAC, IRD-UYI-IRGM, Yaoundé, Cameroon
- Plant Systematics and Ecology Laboratory, Higher Teachers' Training College, University of Yaoundé I, Yaoundé, Cameroon
| | | | - Erika Berenguer
- Lancaster Environment Centre, Lancaster University, Lancaster, UK
- Environmental Change Institute, School of Geography and the Environment, University of Oxford, Oxford, UK
| | | | - Robert Bitariho
- Institute of Tropical Forest Conservation, Mbarara University of Science and Technology (MUST), Mbarara, Uganda
| | - Pascal Boeckx
- Isotope Bioscience Laboratory (ISOFYS), Ghent University, Ghent, Belgium
| | - Jan Bogaert
- Biodiversity and Landscape Unit, Gembloux Agro-Bio Tech, Université de Liege, Liège, Belgium
| | - Bernard Bonyoma
- Section de la Foresterie, Institut National pour l'Etude et la Recherche Agronomique Yangambi, Yangambi, Democratic Republic of the Congo
| | - Patrick Boundja
- Center for International Forestry Research (CIFOR), Bogor, Indonesia
- Congo Programme, Wildlife Conservation Society, Brazzaville, Republic of Congo
| | - Nils Bourland
- Service of Wood Biology, Royal Museum for Central Africa, Tervuren, Belgium
- CIFOR, Bogor, Indonesia
- Forest Resources Management, Gembloux Agro-Bio Tech, University of Liège, Liège, Belgium
- Resources and Synergies Development, Singapore, Singapore
| | - Faustin Boyemba Bosela
- Laboratory of Ecology and Forest Management, Faculty of Sciences, University of Kisangani, Kisangani, Democratic Republic of the Congo
| | - Fabian Brambach
- Biodiversity, Macroecology and Biogeography, University of Göttingen, Göttingen, Germany
| | - Roel Brienen
- School of Geography, University of Leeds, Leeds, UK
| | | | - José Luís Camargo
- Projeto Dinâmica Biológica de Fragmentos Florestais, Instituto Nacional de Pesquisas da Amazônia (INPA), Manaus, Brazil
| | - Wegliane Campelo
- Universidade Federal do Amapá, Ciências Ambientais, Macapá, Brazil
| | - Angela Cano
- Laboratorio de Ecología de Bosques Tropicales y Primatología, Universidad de los Andes, Bogotá, Colombia
- Cambridge University Botanic Garden, Cambridge, UK
| | - Sasha Cárdenas
- Laboratorio de Ecología de Bosques Tropicales y Primatología, Universidad de los Andes, Bogotá, Colombia
| | | | | | | | - Fernanda Antunes Carvalho
- Coordenação de Pesquisas em Ecologia, Instituto Nacional de Pesquisas da Amazônia (INPA), Manaus, Brazil
- Departamento de Genética, Ecologia e Evolução, Instituto de Ciências Biológicas, Belo Horizonte, Brazil
| | - Luisa Fernanda Casas
- Laboratorio de Ecología de Bosques Tropicales y Primatología, Universidad de los Andes, Bogotá, Colombia
| | - Hernán Castellanos
- Centro de Investigaciones Ecológicas de Guayana, Universidad Nacional Experimental de Guayana, Puerto Ordaz, Venezuela
| | - Carolina V Castilho
- Centro de Pesquisa Agroflorestal de Roraima, Embrapa Roraima, Boa Vista, Brazil
| | - Carlos Cerón
- Escuela de Biología Herbario Alfredo Paredes, Universidad Central, Quito, Ecuador
| | - Colin A Chapman
- Biology Department, Vancouver Island University, Nanaimo, British Columbia, Canada
- Shaanxi Key Laboratory for Animal Conservation, Northwest University, Xi'an, China
- School of Life Sciences, University of KwaZulu-Natal, Scottsville, South Africa
| | - Jerome Chave
- Laboratoire Évolution et Diversité Biologique, CNRS and Université Paul Sabatier, Toulouse, France
| | - Phourin Chhang
- Institute of Forest and Wildlife Research and Development (IRD), Phnom Penh, Cambodia
| | - Wanlop Chutipong
- Conservation Ecology Program, King Mongkut's University of Technology Thonburi, Bangkok, Thailand
| | - George B Chuyong
- Faculty of Science, Department of Plant Science, University of Buea, Buea, Cameroon
| | | | - Connie J Clark
- Nicholas School of the Environment, Duke University, Durham, NC, USA
| | - Fernanda Coelho de Souza
- Coordenação de Pesquisas em Ecologia, Instituto Nacional de Pesquisas da Amazônia (INPA), Manaus, Brazil
- University of Leeds, Leeds, UK
- BeZero, London, UK
| | - James A Comiskey
- Inventory and Monitoring Program, National Park Service, Fredericksburg, VA, USA
- Smithsonian Conservation Biology Institute, Washington, DC, USA
| | - David A Coomes
- Department of Plant Sciences and Conservation Research Institute, University of Cambridge, Cambridge, UK
| | | | - Diego F Correa
- Laboratorio de Ecología de Bosques Tropicales y Primatología, Universidad de los Andes, Bogotá, Colombia
- The University of Queensland, Brisbane, Queensland, Australia
| | - Flávia R C Costa
- Coordenação de Pesquisas em Ecologia, Instituto Nacional de Pesquisas da Amazônia (INPA), Manaus, Brazil
| | | | - Pierre Couteron
- AMAP, Université de Montpellier, IRD, Cirad, CNRS, INRAE, Montpellier, France
- International Joint Laboratory DYCOFAC, IRD-UYI-IRGM, Yaoundé, Cameroon
| | - Heike Culmsee
- State Agency for Environment, Nature Conservation and Geology, Güstrow, Germany
| | - Aida Cuni-Sanchez
- Department of Environment and Geography, University of York, York, UK
- Department of International Environmental and Development Studies (NORAGRIC), Norwegian University of Life Sciences, Ås, Norway
| | - Francisco Dallmeier
- Center for Conservation and Sustainability, Smithsonian Conservation Biology Institute, Washington, DC, USA
| | - Gabriel Damasco
- Gothenburg Global Biodiversity Centre, University of Gothenburg, Gothenburg, Sweden
| | - Gilles Dauby
- AMAP, Université de Montpellier, IRD, Cirad, CNRS, INRAE, Montpellier, France
- International Joint Laboratory DYCOFAC, IRD-UYI-IRGM, Yaoundé, Cameroon
| | - Nállarett Dávila
- Departamento de Biologia Vegetal, Instituto de Biologia, Universidade Estadual de Campinas (UNICAMP), Campinas, Brazil
| | | | - Jose Don T De Alban
- Centre for Nature-Based Climate Solutions, Department of Biological Sciences, National University of Singapore, Singapore, Singapore
- Phillipines Programme, Fauna and Flora International, Cambridge, UK
| | - Rafael L de Assis
- Biodiversity and Ecosystem Services, Instituto Tecnológico Vale, Belém, Brazil
| | - Charles De Canniere
- Landscape Ecology and Vegetal Production Systems Unit, Universite Libre de Bruxelles, Brussels, Belgium
| | | | | | - Layon O Demarchi
- Ecology, Monitoring and Sustainable Use of Wetlands (MAUA), Instituto Nacional de Pesquisas da Amazônia (INPA), Manaus, Brazil
| | - Kyle G Dexter
- School of Geosciences, University of Edinburgh, Edinburgh, UK
- Royal Botanic Garden Edinburgh, Edinburgh, UK
| | - Anthony Di Fiore
- Department of Anthropology, University of Texas at Austin, Austin, TX, USA
- Estación de Biodiversidad Tiputini, Colegio de Ciencias Biológicas y Ambientales, Universidad San Francisco de Quito (USFQ), Quito, Ecuador
| | - Hazimah Haji Mohammad Din
- Institute for Biodiversity and Environmental Research, Universiti Brunei Darussalam, Bandar Seri Begawan, Brunei Darussalam
| | | | - Brice Yannick Djiofack
- Service of Wood Biology, Royal Museum for Central Africa, Tervuren, Belgium
- Institut National pour l'Etude et la Recherche Agronomiques (INERA), Wood Laboratory of Yangambi, Yangambi, Democratic Republic of the Congo
- UGent-Woodlab, Laboratory of Wood Technology, Department of Environment, Faculty of Bioscience Engineering, Ghent University, Ghent, Belgium
| | - Marie-Noël K Djuikouo
- International Joint Laboratory DYCOFAC, IRD-UYI-IRGM, Yaoundé, Cameroon
- Faculty of Science, Department of Plant Science, University of Buea, Buea, Cameroon
| | - Tran Van Do
- Silviculture Research Institute, Vietnamese Academy of Forest Sciences, Hanoi, Vietnam
| | - Jean-Louis Doucet
- Forest Is Life, TERRA, Gembloux Agro-Bio Tech, Liège University, Liège, Belgium
| | - Freddie C Draper
- Department of Geography and Planning, University of Liverpool, Liverpool, UK
| | - Vincent Droissart
- AMAP, Université de Montpellier, IRD, Cirad, CNRS, INRAE, Montpellier, France
- International Joint Laboratory DYCOFAC, IRD-UYI-IRGM, Yaoundé, Cameroon
| | - Joost F Duivenvoorden
- Institute of Biodiversity and Ecosystem Dynamics, University of Amsterdam, Amsterdam, The Netherlands
| | - Julien Engel
- AMAP, Université de Montpellier, IRD, Cirad, CNRS, INRAE, Montpellier, France
- Florida International University, Miami, FL, USA
| | - Vittoria Estienne
- Congo Programme, Wildlife Conservation Society, Brazzaville, Republic of Congo
| | - William Farfan-Rios
- Living Earth Collaborative, Washington University in Saint Louis, St Louis, MO, USA
- Missouri Botanical Garden, St Louis, MO, USA
| | - Sophie Fauset
- School of Geography, Earth and Environmental Sciences, University of Plymouth, Plymouth, UK
| | - Kenneth J Feeley
- Department of Biology, University of Miami, Coral Gables, FL, USA
- Fairchild Tropical Botanic Garden, Coral Gables, FL, USA
| | - Yuri Oliveira Feitosa
- Programa de Pós-Graduação em Biologia (Botânica), Instituto Nacional de Pesquisas da Amazônia (INPA), Manaus, Brazil
| | - Ted R Feldpausch
- University of Leeds, Leeds, UK
- Department of Geography, College of Life and Environmental Sciences, University of Exeter, Exeter, UK
| | - Cid Ferreira
- Coordenação de Biodiversidade, Instituto Nacional de Pesquisas da Amazônia (INPA), Manaus, Brazil
| | - Joice Ferreira
- Empresa Brasileira de Pesquisa Agropecuária, Embrapa Amazônia Oriental, Belém, Brazil
| | | | | | | | | | - Ernest G Foli
- Forestry Research Institute of Ghana (FORIG), Kumasi, Ghana
| | - Émile Fonty
- Direction Régionale de la Guyane, Office National des Forêts, Cayenne, French Guiana
- Université de Montpellier, Montpellier, France
| | | | - Alfredo Fuentes
- Missouri Botanical Garden, St Louis, MO, USA
- Herbario Nacional de Bolivia, Instituto de Ecología, Carrera de Biología, Universidad Mayor de San Andrés, La Paz, Bolivia
| | | | | | - Karina Garcia-Cabrera
- Biology Department and Center for Energy, Environment and Sustainability, Wake Forest University, Winston Salem, NC, USA
| | - Roosevelt García-Villacorta
- Programa Restauración de Ecosistemas (PRE), Centro de Innovación Científica Amazónica (CINCIA), Tambopata, Peru
- Peruvian Center for Biodiversity and Conservation (PCBC), Iquitos, Peru
| | - Vitor H F Gomes
- Escola de Negócios Tecnologia e Inovação, Centro Universitário do Pará, Belém, Brazil
- Universidade Federal do Pará, Belém, Brazil
| | - Ricardo Zárate Gómez
- PROTERRA, Instituto de Investigaciones de la Amazonía Peruana (IIAP), Iquitos, Peru
| | | | - Rogerio Gribel
- Coordenação de Biodiversidade, Instituto Nacional de Pesquisas da Amazônia (INPA), Manaus, Brazil
| | | | - Juan Ernesto Guevara
- Grupo de Investigación en Biodiversidad, Medio Ambiente y Salud-BIOMAS, Universidad de las Américas, Quito, Ecuador
- The Field Museum, Chicago, IL, USA
| | - Khalid Rehman Hakeem
- Department of Biological Sciences, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Jefferson S Hall
- Forest Global Earth Observatory (ForestGEO), Smithsonian Tropical Research Institute, Washington, DC, USA
| | | | - Alan C Hamilton
- Honorary Professor, Kunming Institute of Botany, Chinese Academy of Science, Kunming, China
| | | | | | - Terese B Hart
- Lukuru Wildlife Research Foundation, Kinshasa, Democratic Republic of the Congo
- Division of Vertebrate Zoology, Yale Peabody Museum of Natural History, New Haven, CT, USA
| | - Andy Hector
- Department of Plant Sciences, University of Oxford, Oxford, UK
| | - Terry W Henkel
- Department of Biological Sciences, California State Polytechnic University, Humboldt, Arcata, CA, USA
| | - John Herbohn
- Tropical Forests and People Research Centre, University of the Sunshine Coast, Maroochydore DC, Queensland, Australia
| | | | | | - Milena Holmgren
- Resource Ecology Group, Wageningen University and Research, Wageningen, The Netherlands
| | - Euridice N Honorio Coronado
- Instituto de Investigaciones de la Amazonía Peruana (IIAP), Iquitos, Peru
- University of St Andrews, St Andrews, UK
| | | | - Wannes Hubau
- School of Geography, University of Leeds, Leeds, UK
- Service of Wood Biology, Royal Museum for Central Africa, Tervuren, Belgium
- Department of Environment, Laboratory of Wood Technology (Woodlab), Ghent University, Ghent, Belgium
| | - Nobuo Imai
- Department of Forest Science, Tokyo University of Agriculture, Tokyo, Japan
| | - Mariana Victória Irume
- Coordenação de Biodiversidade, Instituto Nacional de Pesquisas da Amazônia (INPA), Manaus, Brazil
| | - Patrick A Jansen
- Smithsonian Tropical Research Institute, Ancon, Panama
- Department of Environmental Sciences, Wageningen University and Research, Wageningen, The Netherlands
| | - Kathryn J Jeffery
- Department of Biological and Environmental Sciences, University of Stirling, Stirling, UK
| | - Eliana M Jimenez
- Grupo de Ecología y Conservación de Fauna y Flora Silvestre, Instituto Amazónico de Investigaciones Imani, Universidad Nacional de Colombia sede Amazonia, Leticia, Colombia
| | - Tommaso Jucker
- School of Biological Sciences, University of Bristol, Bristol, UK
| | - André Braga Junqueira
- Institut de Ciència i Tecnologia Ambientals, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Michelle Kalamandeen
- School of Earth, Environment and Society, McMaster University, Hamilton, Ontario, Canada
| | - Narcisse G Kamdem
- International Joint Laboratory DYCOFAC, IRD-UYI-IRGM, Yaoundé, Cameroon
- Plant Systematics and Ecology Laboratory, Higher Teachers' Training College, University of Yaoundé I, Yaoundé, Cameroon
| | - Kuswata Kartawinata
- Integrative Research Center, The Field Museum of Natural History, Chicago, IL, USA
| | - Emmanuel Kasongo Yakusu
- Service of Wood Biology, Royal Museum for Central Africa, Tervuren, Belgium
- UGent-Woodlab, Laboratory of Wood Technology, Department of Environment, Faculty of Bioscience Engineering, Ghent University, Ghent, Belgium
- Faculté de Gestion de Ressources Naturelles Renouvelables, Université de Kisangani, Kisangani, Democratic Republic of the Congo
| | - John M Katembo
- Laboratory of Ecology and Forest Management, Faculty of Sciences, University of Kisangani, Kisangani, Democratic Republic of the Congo
| | - Elizabeth Kearsley
- Computational and Applied Vegetation Ecology (CAVElab), Department of Environment, Faculty of Bioscience Engineering, Ghent University, Ghent, Belgium
| | - David Kenfack
- Forest Global Earth Observatory (ForestGEO), Smithsonian Tropical Research Institute, Washington, DC, USA
| | - Michael Kessler
- Department of Systematic and Evolutionary Botany, University of Zurich, Zurich, Switzerland
| | - Thiri Toe Khaing
- Center for Integrative Conservation, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Menglun, Mengla, China
- University of the Chinese Academy of Sciences, Beijing, China
| | | | | | - Bente Klitgaard
- Department for Accelerated Taxonomy, Royal Botanic Gardens, Richmond, UK
| | - Nicolas Labrière
- Laboratoire Évolution et Diversité Biologique, CNRS and Université Paul Sabatier, Toulouse, France
| | - Yves Laumonier
- Forest and Environment Program, Center for International Forestry Research (CIFOR), Bogor, Indonesia
| | - Susan G W Laurance
- Centre for Tropical Environmental and Sustainability Science and College of Science and Engineering, James Cook University, Cairns, Queensland, Australia
| | - William F Laurance
- Centre for Tropical Environmental and Sustainability Science and College of Science and Engineering, James Cook University, Cairns, Queensland, Australia
| | - Félix Laurent
- Service of Wood Biology, Royal Museum for Central Africa, Tervuren, Belgium
- Institut National pour l'Etude et la Recherche Agronomiques (INERA), Wood Laboratory of Yangambi, Yangambi, Democratic Republic of the Congo
- UGent-Woodlab, Laboratory of Wood Technology, Department of Environment, Faculty of Bioscience Engineering, Ghent University, Ghent, Belgium
| | - Tinh Cong Le
- Viet Nature Conservation Centre, Hanoi, Viet Nam
| | | | - Miguel E Leal
- Uganda Programme, Wildlife Conservation Society, Kampala, Uganda
| | | | | | - Moses B Libalah
- International Joint Laboratory DYCOFAC, IRD-UYI-IRGM, Yaoundé, Cameroon
- Plant Systematics and Ecology Laboratory, Higher Teachers' Training College, University of Yaoundé I, Yaoundé, Cameroon
- Department of Plant Biology, Faculty of Science, University of Yaoundé I, Yaoundé, Cameroon
| | - Juan Carlos Licona
- Instituto Boliviano de Investigacion Forestal, Santa Cruz, Santa Cruz, Bolivia
| | | | | | - Aline Lopes
- Department of Ecology, Institute of Biological Sciences, University of Brasilia, Brasilia, Brazil
| | | | - Jon C Lovett
- School of Geography, University of Leeds, Leeds, UK
- Herbarium, Royal Botanic Gardens Kew, Richmond, UK
| | - Richard Lowe
- Botany Department, University of Ibadan, Ibadan, Nigeria
| | - José Rafael Lozada
- Facultad de Ciencias Forestales y Ambientales, Instituto de Investigaciones para el Desarrollo Forestal, Universidad de los Andes, Mérida, Mérida, Venezuela
| | - Xinghui Lu
- Institute of Forest Ecology, Environment and Protection, Chinese Academy of Forestry, Beijing, China
| | - Nestor K Luambua
- Service of Wood Biology, Royal Museum for Central Africa, Tervuren, Belgium
- Institut National pour l'Etude et la Recherche Agronomiques (INERA), Wood Laboratory of Yangambi, Yangambi, Democratic Republic of the Congo
- Faculty of Renewable Natural Resources Management, University of Kisangani, Kisangani, Democratic Republic of the Congo
- Faculté des sciences Agronomiques, Université Officielle de Mbujimayi, Mbujimayi, Democratic Republic of the Congo
| | - Bruno Garcia Luize
- Departamento de Biologia Vegetal, Instituto de Biologia, Universidade Estadual de Campinas (UNICAMP), Campinas, Brazil
| | - Paul Maas
- Naturalis Biodiversity Center, Leiden, The Netherlands
| | - José Leonardo Lima Magalhães
- Programa de Pós-Graduação em Ecologia, Universidade Federal do Pará, Belém, Brazil
- Embrapa Amazônia Oriental, Belém, Brazil
| | - William E Magnusson
- Coordenação de Pesquisas em Ecologia, Instituto Nacional de Pesquisas da Amazônia (INPA), Manaus, Brazil
| | | | - Jean-Remy Makana
- Faculté des Sciences, Laboratoire d'Écologie et Aménagement Forestier, Université de Kisangani, Kisangani, Democratic Republic of the Congo
| | - Yadvinder Malhi
- Environmental Change Institute, School of Geography and the Environment, University of Oxford, Oxford, UK
| | - Lorena Maniguaje Rincón
- Coordenação de Biodiversidade, Instituto Nacional de Pesquisas da Amazônia (INPA), Manaus, Brazil
| | - Asyraf Mansor
- School of Biological Sciences, Universiti Sains Malaysia, George Town, Malaysia
- Centre for Marine and Coastal Studies, Universiti Sains Malaysia, George Town, Malaysia
| | | | - Beatriz S Marimon
- Programa de Pós-Graduação em Ecologia e Conservação, Universidade do Estado de Mato Grosso, Nova Xavantina, Brazil
| | - Ben Hur Marimon-Junior
- Programa de Pós-Graduação em Ecologia e Conservação, Universidade do Estado de Mato Grosso, Nova Xavantina, Brazil
| | - Andrew R Marshall
- Department of Environment and Geography, University of York, York, UK
- Flamingo Land, Kirby Misperton, UK
- Forest Research Institute, University of the Sunshine Coast, Sippy Downs, Queensland, Australia
| | - Maria Pires Martins
- Coordenação de Biodiversidade, Instituto Nacional de Pesquisas da Amazônia (INPA), Manaus, Brazil
| | | | | | - Italo Mesones
- Department of Integrative Biology, University of California, Berkeley, CA, USA
| | - Faizah Metali
- Environmental and Life Sciences Programme, Faculty of Science, Universiti Brunei Darussalam, Bandar Seri Begawan, Brunei Darussalam
| | - Vianet Mihindou
- Agence Nationale des Parcs Nationaux, Libreville, Gabon
- Ministère de la Forêt, de la Mer, de l'Environnement, Chargé du Plan Climat, Libreville, Gabon
| | - Jerome Millet
- Office français de la biodiversité, Vincennes, France
| | - William Milliken
- Department for Ecosystem Stewardship, Royal Botanic Gardens, Richmond, UK
| | | | - Jean-François Molino
- AMAP, Université de Montpellier, IRD, Cirad, CNRS, INRAE, Montpellier, France
- International Joint Laboratory DYCOFAC, IRD-UYI-IRGM, Yaoundé, Cameroon
| | | | - Abel Monteagudo Mendoza
- Jardín Botánico de Missouri, Oxapampa, Peru
- Herbario Vargas, Universidad Nacional de San Antonio Abad del Cusco, Cuzco, Peru
| | - Juan Carlos Montero
- Instituto Nacional de Pesquisas da Amazônia (INPA), Manaus, Brazil
- Instituto Boliviano de Investigacion Forestal, Santa Cruz, Santa Cruz, Bolivia
| | - Sam Moore
- Environmental Change Institute, School of Geography and the Environment, University of Oxford, Oxford, UK
| | - Bonifacio Mostacedo
- Facultad de Ciencias Agrícolas, Universidad Autónoma Gabriel René Moreno, Santa Cruz, Santa Cruz, Bolivia
| | | | - Sharif Ahmed Mukul
- Tropical Forests and People Research Centre, University of the Sunshine Coast, Maroochydore DC, Queensland, Australia
- Department of Environment and Development Studies, United International University, Dhaka, Bangladesh
| | - Pantaleo K T Munishi
- Department of Ecosystems and Conservation, Sokoine University of Agriculture, Morogoro, Tanzania
| | | | | | - Marcelo Trindade Nascimento
- Laboratório de Ciências Ambientais, Universidade Estadual do Norte Fluminense, Campos dos Goyatacazes, Brazil
| | - David Neill
- Universidad Estatal Amazónica, Puyo, Ecuador
| | | | | | - Laurent Nsenga
- Service of Wood Biology, Royal Museum for Central Africa, Tervuren, Belgium
| | - Percy Núñez Vargas
- Herbario Vargas, Universidad Nacional de San Antonio Abad del Cusco, Cuzco, Peru
| | - Lucas Ojo
- University of Abeokuta, Abeokuta, Nigeria
| | - Alexandre A Oliveira
- Instituto de Biociências, Departamento de Ecologia, Universidade de Sao Paulo (USP), São Paulo, Brazil
| | - Edmar Almeida de Oliveira
- Programa de Pós-Graduação em Ecologia e Conservação, Universidade do Estado de Mato Grosso, Nova Xavantina, Brazil
| | | | | | - Susamar Pansini
- Programa de Pós-Graduação em Biodiversidade e Biotecnologia PPG-Bionorte, Universidade Federal de Rondônia, Porto Velho, Brazil
| | - Marcelo Petratti Pansonato
- Coordenação de Biodiversidade, Instituto Nacional de Pesquisas da Amazônia (INPA), Manaus, Brazil
- Instituto de Biociências, Departamento de Ecologia, Universidade de São Paulo (USP), São Paulo, Brazil
| | | | - Ekananda Paudel
- Centre for Mountain Ecosystem Studies, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China
| | - Daniela Pauletto
- Instituto de Biodiversidade e Florestas, Universidade Federal do Oeste do Pará, Santarém, Brazil
| | - Richard G Pearson
- Centre for Biodiversity and Environment Research, Department of Genetics, Evolution and Environment, University College London, London, UK
| | | | - R Toby Pennington
- Royal Botanic Garden Edinburgh, Edinburgh, UK
- Department of Geography, College of Life and Environmental Sciences, University of Exeter, Exeter, UK
| | - Carlos A Peres
- School of Environmental Sciences, University of East Anglia, Norwich, UK
| | | | - Pascal Petronelli
- Cirad UMR Ecofog, AgrosParisTech, CNRS, INRAE, Université Guyane, Kourou Cedex, France
| | | | | | | | | | - Maria Teresa Fernandez Piedade
- Ecology, Monitoring and Sustainable Use of Wetlands (MAUA), Instituto Nacional de Pesquisas da Amazônia (INPA), Manaus, Brazil
| | | | - Pierre Ploton
- AMAP, Université de Montpellier, IRD, Cirad, CNRS, INRAE, Montpellier, France
- International Joint Laboratory DYCOFAC, IRD-UYI-IRGM, Yaoundé, Cameroon
| | - Andreas Popelier
- Service of Wood Biology, Royal Museum for Central Africa, Tervuren, Belgium
- UGent-Woodlab, Laboratory of Wood Technology, Department of Environment, Faculty of Bioscience Engineering, Ghent University, Ghent, Belgium
- Faculté de Gestion de Ressources Naturelles Renouvelables, Université de Kisangani, Kisangani, Democratic Republic of the Congo
| | - John R Poulsen
- Nicholas School of the Environment, Duke University, Durham, NC, USA
- The Nature Conservancy, Boulder, CO, USA
| | - Adriana Prieto
- Instituto de Ciencias Naturales, Universidad Nacional de Colombia, Bogotá, Colombia
| | | | - Hari Priyadi
- Department of Resource and Environmental Economics (ESL), IPB University, Bogor, Indonesia
| | - Lan Qie
- School of Geography, University of Leeds, Leeds, UK
- School of Life Sciences, University of Lincoln, Lincoln, UK
| | - Adriano Costa Quaresma
- Ecology, Monitoring and Sustainable Use of Wetlands (MAUA), Instituto Nacional de Pesquisas da Amazônia (INPA), Manaus, Brazil
- Wetland Department, Institute of Geography and Geoecology, Karlsruhe Institute of Technology (KIT), Rastatt, Germany
| | - Helder Lima de Queiroz
- Diretoria Técnico-Científica, Instituto de Desenvolvimento Sustentável Mamirauá, Tefé, Brazil
| | - Hirma Ramirez-Angulo
- Instituto de Investigaciones para el Desarrollo Forestal (INDEFOR), Universidad de los Andes, Mérida, Mérida, Venezuela
| | - José Ferreira Ramos
- Coordenação de Biodiversidade, Instituto Nacional de Pesquisas da Amazônia (INPA), Manaus, Brazil
| | - Neidiane Farias Costa Reis
- Programa de Pós-Graduação em Biodiversidade e Biotecnologia PPG-Bionorte, Universidade Federal de Rondônia, Porto Velho, Brazil
| | - Jan Reitsma
- Waardenburg Ecology, Culemborg, The Netherlands
| | | | - Terhi Riutta
- Environmental Change Institute, School of Geography and the Environment, University of Oxford, Oxford, UK
- College of Life Sciences, University of Exeter, Exeter, UK
| | - Gonzalo Rivas-Torres
- Estación de Biodiversidad Tiputini, Colegio de Ciencias Biológicas y Ambientales, Universidad San Francisco de Quito (USFQ), Quito, Ecuador
- University of Florida, Gainesville, FL, USA
| | - Iyan Robiansyah
- Department of Biological Sciences, King Abdulaziz University, Jeddah, Kingdom of Saudi Arabia
- Center for Plant Conservation Bogor Botanic Gardens, Indonesian Institute of Science, Bogor, Indonesia
| | - Maira Rocha
- Ecology, Monitoring and Sustainable Use of Wetlands (MAUA), Instituto Nacional de Pesquisas da Amazônia (INPA), Manaus, Brazil
| | | | - M Elizabeth Rodriguez-Ronderos
- Centre for Nature-Based Climate Solutions, Department of Biological Sciences, National University of Singapore, Singapore, Singapore
- Department of Geography, National University of Singapore, Singapore, Singapore
| | - Francesco Rovero
- Deparment of Biology, University of Florence, Sesto Fiorentino, Italy
- Tropical Biodiversity Section, Museo delle Scienze (MUSE), Trento, Italy
| | - Andes H Rozak
- Research Center for Plant Conservation, Botanic Gardens and Forestry, National Research and Innovation Agency (BRIN), Bogor, Indonesia
| | - Agustín Rudas
- Instituto de Ciencias Naturales, Universidad Nacional de Colombia, Bogotá, Colombia
| | | | - Daniel Sabatier
- AMAP, Université de Montpellier, IRD, Cirad, CNRS, INRAE, Montpellier, France
- International Joint Laboratory DYCOFAC, IRD-UYI-IRGM, Yaoundé, Cameroon
| | - Le Bienfaiteur Sagang
- International Joint Laboratory DYCOFAC, IRD-UYI-IRGM, Yaoundé, Cameroon
- Plant Systematics and Ecology Laboratory, Higher Teachers' Training College, University of Yaoundé I, Yaoundé, Cameroon
- Institute of the Environment and Sustainability, University of California, Los Angeles, CA, USA
| | - Adeilza Felipe Sampaio
- Programa de Pós-Graduação em Biodiversidade e Biotecnologia PPG-Bionorte, Universidade Federal de Rondônia, Porto Velho, Brazil
| | - Ismayadi Samsoedin
- Forest Research and Development Center, Research, Development and Innovation Agency, Ministry of Environment and Forestry, Bogor, Indonesia
| | - Manichanh Satdichanh
- Centre for Mountain Ecosystem Studies, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China
| | - Juliana Schietti
- Coordenação de Biodiversidade, Instituto Nacional de Pesquisas da Amazônia (INPA), Manaus, Brazil
| | - Jochen Schöngart
- Ecology, Monitoring and Sustainable Use of Wetlands (MAUA), Instituto Nacional de Pesquisas da Amazônia (INPA), Manaus, Brazil
| | - Veridiana Vizoni Scudeller
- Departamento de Biologia, Universidade Federal do Amazonas (UFAM)-Instituto de Ciências Biológicas (ICB1), Manaus, Brazil
| | | | - Douglas Sheil
- Forest Ecology and Forest Management Group, Wageningen University and Research, Wageningen, The Netherlands
| | | | - Miles R Silman
- Biology Department and Center for Energy, Environment and Sustainability, Wake Forest University, Winston Salem, NC, USA
| | | | | | - Murielle Simo-Droissart
- International Joint Laboratory DYCOFAC, IRD-UYI-IRGM, Yaoundé, Cameroon
- Plant Systematics and Ecology Laboratory, Higher Teachers' Training College, University of Yaoundé I, Yaoundé, Cameroon
| | | | - Plinio Sist
- Cirad-ES, Campus International de Baillarguet, TA C-105/D, Montpellier, France
| | - Thaiane R Sousa
- Programa de Pós-Graduação em Ecologia, Instituto Nacional de Pesquisas da Amazônia (INPA), Manaus, Brazil
| | - Emanuelle de Sousa Farias
- Laboratório de Ecologia de Doenças Transmissíveis da Amazônia (EDTA), Instituto Leônidas e Maria Deane, Fiocruz, Manaus, Brazil
- Instituto Oswaldo Cruz (IOC/FIOCRUZ), Rio de Janeiro, Brazil
| | - Luiz de Souza Coelho
- Coordenação de Biodiversidade, Instituto Nacional de Pesquisas da Amazônia (INPA), Manaus, Brazil
| | | | - Suzanne M Stas
- School of Earth and Environment, University of Leeds, Leeds, UK
| | | | - Pablo R Stevenson
- Laboratorio de Ecología de Bosques Tropicales y Primatología, Universidad de los Andes, Bogotá, Colombia
| | - Juliana Stropp
- Biogeography Department, Trier University, Trier, Germany
| | - Rahayu S Sukri
- Institute for Biodiversity and Environmental Research, Universiti Brunei Darussalam, Bandar Seri Begawan, Brunei Darussalam
| | - Terry C H Sunderland
- Center for International Forestry Research (CIFOR), Bogor, Indonesia
- Faculty of Forestry, University of British Columbia, Vancouver, British Columbia, Canada
| | - Eizi Suzuki
- Research Center for the Pacific Islands, Kagoshima University, Kagoshima, Japan
| | - Michael D Swaine
- Department of Plant and Soil Science, School of Biological Sciences, University of Aberdeen, Aberdeen, UK
| | - Jianwei Tang
- Key Laboratory of Tropical Plant Resources and Sustainable Use, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Mengla, China
| | - James Taplin
- UK Research and Innovation, Innovate UK, London, UK
| | - David M Taylor
- Department of Geography, National University of Singapore, Singapore, Singapore
| | - J Sebastián Tello
- Center for Conservation and Sustainable Development, Missouri Botanical Garden, St Louis, MO, USA
| | - John Terborgh
- Department of Biology and Florida Museum of Natural History, University of Florida, Gainesville, FL, USA
- James Cook University, Cairns, Queensland, Australia
| | | | - Ida Theilade
- Department of Food and Resource Economics, University of Copenhagen, Copenhagen, Denmark
| | - Duncan W Thomas
- School of Biological Sciences, Washington State University, Vancouver, WA, USA
| | - Raquel Thomas
- Iwokrama International Centre for Rain Forest Conservation and Development, Georgetown, Guyana
| | - Sean C Thomas
- Institute of Forestry and Conservation, University of Toronto, Toronto, Ontario, Canada
| | | | - Benjamin Toirambe
- Service of Wood Biology, Royal Museum for Central Africa, Tervuren, Belgium
- Ministère de l'Environnement et Développement Durable, Kinshasa, Democratic Republic of the Congo
| | | | - Kyle W Tomlinson
- Center for Integrative Conservation, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Menglun, Mengla, China
- Center of Conservation Biology, Core Botanical Gardens, Chinese Academy of Sciences, Menglun, China
| | - Armando Torres-Lezama
- Instituto de Investigaciones para el Desarrollo Forestal (INDEFOR), Universidad de los Andes, Mérida, Mérida, Venezuela
| | | | - John Tshibamba Mukendi
- Service of Wood Biology, Royal Museum for Central Africa, Tervuren, Belgium
- Faculté de Gestion de Ressources Naturelles Renouvelables, Université de Kisangani, Kisangani, Democratic Republic of the Congo
- Faculté des Sciences Appliquées, Université de Mbujimayi, Mbujimayi, Democratic Republic of the Congo
| | - Roven D Tumaneng
- Phillipines Programme, Fauna and Flora International, Cambridge, UK
- Emerging Technology Development Division, Department of Science and Technology Philippine Council for Industry, Energy and Emerging Technology Research and Development (DOST-PCIEERD), Taguig City, Philippines
| | - Maria Natalia Umaña
- Department of Ecology and Evolutionary Biology, University of Michigan, Ann Arbor, MI, USA
| | - Peter M Umunay
- Wildlife Conservation Society, New York, NY, USA
- Yale School of Forestry and Environmental Studies, Yale University, New Haven, CT, USA
| | | | - Elvis H Valderrama Sandoval
- Department of Biology, University of Missouri, St Louis, MO, USA
- Universidad Nacional de la Amazonia Peruana, Iquitos, Peru
| | | | - Tinde R Van Andel
- Naturalis Biodiversity Center, Leiden, The Netherlands
- Wageningen University, Wageningen, The Netherlands
| | - Martin van de Bult
- Doi Tung Development Project, Social Development Department, Chiang Rai, Thailand
| | | | | | | | - César I A Vela
- Escuela Profesional de Ingeniería Forestal, Universidad Nacional de San Antonio Abad del Cusco, Puerto Maldonado, Peru
| | | | - Hans Verbeeck
- CAVElab-Computational and Applied Vegetation Ecology, Department of Environment, Ghent University, Ghent, Belgium
| | | | - Alberto Vicentini
- Coordenação de Pesquisas em Ecologia, Instituto Nacional de Pesquisas da Amazônia (INPA), Manaus, Brazil
| | | | - Emilio Vilanova Torre
- Instituto de Investigaciones para el Desarrollo Forestal (INDEFOR), Universidad de los Andes, Mérida, Mérida, Venezuela
- Wildlife Conservation Society, New York, NY, USA
| | - Daniel Villarroel
- Museo de Historia Natural Noel Kempff Mercado, Universidad Autónoma Gabriel Rene Moreno, Santa Cruz, Santa Cruz, Bolivia
- Fundación Amigos de la Naturaleza (FAN), Santa Cruz, Bolivia
| | | | - Jason Vleminckx
- International Center for Tropical Botany, Department of Biological Sciences, Florida International University, Miami, FL, USA
- Faculté des Sciences, Service d'Évolution Biologique et Écologie, Université Libre de Bruxelles, Brussels, Belgium
| | | | - Vincent Antoine Vos
- Instituto de Investigaciones Forestales de la Amazonía, Universidad Autónoma del Beni José Ballivián, Riberalta, Beni, Bolivia
| | | | - Edward L Webb
- Viikki Tropical Resources Institute, Department of Forest Sciences, University of Helsinki, Helsinki, Finland
- Helsinki Institute of Sustainability Science (HELSUS), Helsinki, Finland
| | - Lee J T White
- Ministry of Forests, Seas, Environment and Climate, Libreville, Gabon
- Department of Biological and Environmental Sciences, University of Stirling, Stirling, UK
- Institut de Recherche en Écologie Tropicale, Libreville, Gabon
| | - Serge Wich
- School of Biological and Environmental Sciences, Liverpool John Moores University, Liverpool, UK
| | - Florian Wittmann
- Instituto Nacional de Pesquisas da Amazônia (INPA), Manaus, Brazil
- Wetland Department, Institute of Geography and Geoecology, Karlsruhe Institute of Technology (KIT), Rastatt, Germany
| | | | - Runguo Zang
- Key Laboratory of Forest Ecology and Environment of State Forestry Administration, Institute of Forest Ecology, Environment and Protection, Chinese Academy of Forestry, Beijing, China
| | - Charles Eugene Zartman
- Coordenação de Biodiversidade, Instituto Nacional de Pesquisas da Amazônia (INPA), Manaus, Brazil
| | - Lise Zemagho
- International Joint Laboratory DYCOFAC, IRD-UYI-IRGM, Yaoundé, Cameroon
- Plant Systematics and Ecology Laboratory, Higher Teachers' Training College, University of Yaoundé I, Yaoundé, Cameroon
| | - Egleé L Zent
- Laboratory of Human Ecology, Instituto Venezolano de Investigaciones Científicas (IVIC), Caracas, Venezuela
| | - Stanford Zent
- Laboratory of Human Ecology, Instituto Venezolano de Investigaciones Científicas (IVIC), Caracas, Venezuela
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Richard A, Mohamad Kassim MR, Abd. Kudus K, Saleh MN. Tropical Forests Stand Recovery 30-year After Selectively Logged in Peninsular Malaysia. PERTANIKA JOURNAL OF TROPICAL AGRICULTURAL SCIENCE 2023; 46:1027-1046. [DOI: 10.47836/pjtas.46.3.16] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
Abstract
This article analysed the 25–30 years of growth of dipterocarps forests that were logged under the Selective Management System (SMS) at three sites in Peninsular Malaysia to understand how management regimes affected forest stem density and basal area. The management regimes were (1) unlogged, (2) moderately logged forests that logged all dipterocarps ≥ 65 cm diameter at breast height (dbh) and all non-dipterocarps ≥ 60 cm dbh, and (3) intensely logged forests that logged all dipterocarps ≥ 50 cm dbh and non-dipterocarps ≥ 45 cm dbh. The intensely logged regime is similar to the SMS practices in Peninsular Malaysia. This result showed that one-year post-logging, there was no difference in the total stem density and basal area between forests logged according to the two management regimes. Forest stem density decreased over time in all management regimes, significantly greater in unlogged forests (-15.1 stems/ha/yr, confidence interval (CI): -16.9 to -13.3). This decline in stem density reflected that mortality exceeded recruitment in all management regimes. Despite the consistent decline of forest stem density, the basal area increased over time, and the rate of increase in the intensely logged forest (0.22 m2 /ha/yr, CI: 0.19 to 0.25) was significantly greater than the other management regimes. Our study showed that 30 years post-logging, the effect of selective logging remained evident. Both logged forest stem density and the basal area did not recover to that of unlogged forests, indicating the importance of enrichment planting and extending the cutting cycles beyond 30 years for the sustainability of dipterocarps forests.
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Gora EM, Schnitzer SA, Bitzer PM, Burchfield JC, Gutierrez C, Yanoviak SP. Lianas increase lightning-caused disturbance severity in a tropical forest. THE NEW PHYTOLOGIST 2023; 238:1865-1875. [PMID: 36951173 DOI: 10.1111/nph.18856] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Accepted: 02/14/2023] [Indexed: 05/04/2023]
Abstract
Lightning is an important agent of plant mortality and disturbance in forests. Lightning-caused disturbance is highly variable in terms of its area of effect and disturbance severity (i.e. tree damage and death), but we do not know how this variation is influenced by forest structure and plant composition. We used a novel lightning detection system to quantify how lianas influenced the severity and spatial extent (i.e. area) of lightning disturbance using 78 lightning strikes in central Panama. The local density of lianas (measured as liana basal area) was positively associated with the number of trees killed and damaged by lightning, and patterns of plant damage indicated that this occurred because lianas facilitated more electrical connections from large to small trees. Liana presence, however, did not increase the area of the disturbance. Thus, lianas increased the severity of lightning disturbance by facilitating damage to additional trees without influencing the footprint of the disturbance. These findings indicate that lianas spread electricity to damage and kill understory trees that otherwise would survive a strike. As liana abundance increases in tropical forests, their negative effects on tree survival with respect to the severity of lightning-related tree damage and death are likely to increase.
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Affiliation(s)
- Evan M Gora
- Cary Institute of Ecosystem Studies, Millbrook, New York, NY, 12545, USA
- Smithsonian Tropical Research Institute, Balboa, Panamá
| | - Stefan A Schnitzer
- Smithsonian Tropical Research Institute, Balboa, Panamá
- Department of Biological Sciences, Marquette University, Milwaukee, WI, 53233, USA
| | - Phillip M Bitzer
- Department of Atmospheric and Earth Science, The University of Alabama in Huntsville, Huntsville, AL, 35899, USA
| | - Jeffrey C Burchfield
- Earth System Science Center, The University of Alabama in Huntsville, Huntsville, AL, 35899, USA
| | | | - Stephen P Yanoviak
- Smithsonian Tropical Research Institute, Balboa, Panamá
- Department of Biology, University of Louisville, Louisville, KY, 40208, USA
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5
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Cheng F, Tian J, He J, He H, Liu G, Zhang Z, Zhou L. The spatial and temporal distribution of China’s forest carbon. Front Ecol Evol 2023. [DOI: 10.3389/fevo.2023.1110594] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2023] Open
Abstract
IntroductionChina’s forests have sequestrated a significant amount of carbon over the past two decades. However, it is not clear whether China’s forests will be able to continue to have as much carbon sequestration potential capacity in the future.MethodsIn order to research China’s forest carbon storage and carbon sequestration potential capacities at spatial and temporal scales, we built a digital forest model for each province of China using the data from The China Forest Resources Report (2014– 2018) and calculated the carbon storage capacity and sequestration potential capacity of each province with the current management practices without considering natural successions.ResultsThe results showed that the current forest carbon storage is 10.0 Pg C, and the carbon sequestration potential in the next 40 years (from year 2019 to 2058) will be 5.04 Pg C. Since immature forests account for the majority of current forests, the carbon sequestration capacity of the forest was also high (0.202 Pg C year−1). However, the forest carbon storage reached the maximum with the increase of stand maturity. At this time, if scenarios such as afforestation and reforestation, human and natural disturbances, and natural succession are not considered, the carbon sequestration capacity of forests will continue to decrease. After 90 years, all stands will develop into mature and over-mature forests, and the forest carbon sequestration capacity is 0.008 Pg year−1; and the carbon sequestration rate is ~4% of what it is nowadays. The change trend of forest carbon in each province is consistent with that of the country. In addition, considering the large forest coverage area in China, the differences in tree species and growing conditions, the forest carbon storage and carbon sequestration capacities among provinces were different. The growth rate of carbon density in high-latitude provinces (such as Heilongjiang, Jilin, and Inner Mongolia) was lower than that in the south (Guangdong, Guangxi, or Hunan), but the forest carbon potential was higher.DiscussionPlanning and implementing targeted forest management strategies is the key to increasing forest carbon storage and extending the service time of forest carbon sinks in provinces. In order to reach the national carbon neutrality goals, we recommend that each province have an informative strategic forest management plan.
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Banin LF, Raine EH, Rowland LM, Chazdon RL, Smith SW, Rahman NEB, Butler A, Philipson C, Applegate GG, Axelsson EP, Budiharta S, Chua SC, Cutler MEJ, Elliott S, Gemita E, Godoong E, Graham LLB, Hayward RM, Hector A, Ilstedt U, Jensen J, Kasinathan S, Kettle CJ, Lussetti D, Manohan B, Maycock C, Ngo KM, O'Brien MJ, Osuri AM, Reynolds G, Sauwai Y, Scheu S, Silalahi M, Slade EM, Swinfield T, Wardle DA, Wheeler C, Yeong KL, Burslem DFRP. The road to recovery: a synthesis of outcomes from ecosystem restoration in tropical and sub-tropical Asian forests. Philos Trans R Soc Lond B Biol Sci 2023; 378:20210090. [PMID: 36373930 PMCID: PMC9661948 DOI: 10.1098/rstb.2021.0090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Accepted: 08/28/2022] [Indexed: 11/16/2022] Open
Abstract
Current policy is driving renewed impetus to restore forests to return ecological function, protect species, sequester carbon and secure livelihoods. Here we assess the contribution of tree planting to ecosystem restoration in tropical and sub-tropical Asia; we synthesize evidence on mortality and growth of planted trees at 176 sites and assess structural and biodiversity recovery of co-located actively restored and naturally regenerating forest plots. Mean mortality of planted trees was 18% 1 year after planting, increasing to 44% after 5 years. Mortality varied strongly by site and was typically ca 20% higher in open areas than degraded forest, with height at planting positively affecting survival. Size-standardized growth rates were negatively related to species-level wood density in degraded forest and plantations enrichment settings. Based on community-level data from 11 landscapes, active restoration resulted in faster accumulation of tree basal area and structural properties were closer to old-growth reference sites, relative to natural regeneration, but tree species richness did not differ. High variability in outcomes across sites indicates that planting for restoration is potentially rewarding but risky and context-dependent. Restoration projects must prepare for and manage commonly occurring challenges and align with efforts to protect and reconnect remaining forest areas. The abstract of this article is available in Bahasa Indonesia in the electronic supplementary material. This article is part of the theme issue 'Understanding forest landscape restoration: reinforcing scientific foundations for the UN Decade on Ecosystem Restoration'.
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Affiliation(s)
- Lindsay F. Banin
- UK Centre for Ecology & Hydrology, Bush Estate, Penicuik, Midlothian EH26 0QB, UK
| | - Elizabeth H. Raine
- UK Centre for Ecology & Hydrology, Bush Estate, Penicuik, Midlothian EH26 0QB, UK
| | - Lucy M. Rowland
- Department of Geography, University of Exeter, Laver Building, North Park Road, Exeter EX4 4QE, UK
| | - Robin L. Chazdon
- Tropical Forests and People Research Centre, Forest Research Institute, University of Sunshine Coast, 90 Sippy Downs Drive, Sippy Downs, 4556, Queensland, Australia
| | - Stuart W. Smith
- Asian School of Environment, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore
- Ecology, Conservation and Zoonosis Research and Enterprise Group, School of Applied Sciences, University of Brighton, Brighton, BN2 4GJ, UK
| | - Nur Estya Binte Rahman
- Asian School of Environment, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore
| | - Adam Butler
- Biomathematics and Statistics Scotland, JCMB, The King's Buildings, Peter Guthrie Tait Road, Edinburgh EH9 3FD, UK
| | - Christopher Philipson
- Permian Global Research Limited, Savoy Hill House, 7–10 Savoy Hill, London WC2R 0BU, UK
| | - Grahame G. Applegate
- Tropical Forests and People Research Centre, Forest Research Institute, University of Sunshine Coast, 90 Sippy Downs Drive, Sippy Downs, 4556, Queensland, Australia
| | - E. Petter Axelsson
- Department of Wildlife, Fish and Environmental Studies, Swedish University of Agricultural Sciences, Skogsmarksgränd, Umeå 907 36, Sweden
| | - Sugeng Budiharta
- Research Centre for Ecology and Ethnobiology, National Agency for Research and Innovation (BRIN), Jl. Raya Jakarta-Bogor KM. 46, Cibinong, Bogor, West Java 16911, Indonesia
| | - Siew Chin Chua
- Department of Biological Sciences, National University of Singapore, Block S3 #05-01 16 Science Drive 4, Singapore 117558, Singapore
| | | | - Stephen Elliott
- Environmental Science Research Centre, Science Faculty and Forest Restoration Research Unit, Biology Department, Chiang Mai University, Chiang Mai, 50200, Thailand
| | - Elva Gemita
- PT Restorasi Ekosistem Indonesia, Jl. Dadali No. 32, Bogor 16161, Indonesia
| | - Elia Godoong
- Faculty of Tropical Forestry, Universiti Malaysia Sabah, Kota Kinabalu, Sabah 88400, Malaysia
| | - Laura L. B. Graham
- Tropical Forests and People Research Centre, Forest Research Institute, University of Sunshine Coast, 90 Sippy Downs Drive, Sippy Downs, 4556, Queensland, Australia
- Borneo Orangutan Survival Foundation, BOSF Mawas Program, Palangka Raya, Central Kalimantan, 73111, Indonesia
| | - Robin M. Hayward
- Biological and Environmental Sciences, University of Stirling, Stirling FK9 4LA, UK
| | - Andy Hector
- Department of Biology, University of Oxford, South Parks Road, Oxford OX1 3RB, UK
| | - Ulrik Ilstedt
- Department of Forest Ecology and Management, Swedish University of Agricultural Sciences, Skogsmarksgränd, Umeå 907 36, Sweden
| | - Joel Jensen
- Department of Forest Ecology and Management, Swedish University of Agricultural Sciences, Skogsmarksgränd, Umeå 907 36, Sweden
| | - Srinivasan Kasinathan
- Nature Conservation Foundation, 1311, ‘Amritha’, 12th Main, Vijayanagar 1st Stage, Mysuru, Karnataka 570 017, India
| | - Christopher J. Kettle
- Department of Environmental Systems Science, ETH Zürich, Universitätstrasse 16, Zürich 8092, Switzerland
- Bioversity International, Via di San Domenico, 00153 Rome, Italy
| | - Daniel Lussetti
- Department of Forest Ecology and Management, Swedish University of Agricultural Sciences, Skogsmarksgränd, Umeå 907 36, Sweden
| | - Benjapan Manohan
- Environmental Science Research Centre, Science Faculty and Forest Restoration Research Unit, Biology Department, Chiang Mai University, Chiang Mai, 50200, Thailand
| | - Colin Maycock
- Forever Sabah, Jalan Penampang, Kota Kinabalu, Sabah 88300, Malaysia
| | - Kang Min Ngo
- Asian School of Environment, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore
| | - Michael J. O'Brien
- Área de Biodiversidad y Conservación, Universidad Rey Juan Carlos, c/Tulipán s/n., E-28933 Móstoles, Madrid, 28933, Spain
| | - Anand M. Osuri
- Nature Conservation Foundation, 1311, ‘Amritha’, 12th Main, Vijayanagar 1st Stage, Mysuru, Karnataka 570 017, India
| | - Glen Reynolds
- South East Asia Rainforest Research Partnership, Danum Valley Field Centre, PO Box 60282, Lahad Datu, Sabah 91112, Malaysia
| | - Yap Sauwai
- Conservation & Environmental Management Division, Yayasan Sabah Group, Kota Kinabalu, Sabah 88817, Malaysia
| | - Stefan Scheu
- J.F. Blumenbach Institute of Zoology and Anthropology, University of Göttingen, Untere Karspüle 2, Göttingen 37073, Germany
- Centre of Biodiversity and Sustainable Land Use, University of Göttingen, 37073 Göttingen, Germany
| | - Mangarah Silalahi
- PT Restorasi Ekosistem Indonesia, Jl. Dadali No. 32, Bogor 16161, Indonesia
| | - Eleanor M. Slade
- Asian School of Environment, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore
| | - Tom Swinfield
- Department of Zoology, University of Cambridge, Downing St, Cambridge CB2 3EJ, UK
| | - David A. Wardle
- Asian School of Environment, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore
| | - Charlotte Wheeler
- Centre for International Forestry Research (CIFOR), Jalan CIFOR, Bogor 16115, Indonesia
| | - Kok Loong Yeong
- South East Asia Rainforest Research Partnership, Danum Valley Field Centre, PO Box 60282, Lahad Datu, Sabah 91112, Malaysia
- Leverhulme Centre for Climate Change Mitigation, School of Biosciences, University of Sheffield, Alfred Denny Building, Western Bank, Sheffield S10 2TN, UK
| | - David F. R. P. Burslem
- School of Biological Sciences, University of Aberdeen, St Machar Drive, Aberdeen, Scotland AB24 3UU, UK
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Zhang B, Fischer FJ, Coomes DA, Jucker T. Logging leaves a fingerprint on the number, size, spatial configuration and geometry of tropical forest canopy gaps. Biotropica 2022. [DOI: 10.1111/btp.13190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Beibei Zhang
- School of Biological Sciences University of Bristol Bristol UK
| | | | - David A. Coomes
- Conservation Research Institute University of Cambridge Cambridge UK
| | - Tommaso Jucker
- School of Biological Sciences University of Bristol Bristol UK
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Controlling synchronization of gamma oscillations by astrocytic modulation in a model hippocampal neural network. Sci Rep 2022; 12:6970. [PMID: 35484169 PMCID: PMC9050920 DOI: 10.1038/s41598-022-10649-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Accepted: 04/11/2022] [Indexed: 12/13/2022] Open
Abstract
Recent in vitro and in vivo experiments demonstrate that astrocytes participate in the maintenance of cortical gamma oscillations and recognition memory. However, the mathematical understanding of the underlying dynamical mechanisms remains largely incomplete. Here we investigate how the interplay of slow modulatory astrocytic signaling with fast synaptic transmission controls coherent oscillations in the network of hippocampal interneurons that receive inputs from pyramidal cells. We show that the astrocytic regulation of signal transmission between neurons improves the firing synchrony and extends the region of coherent oscillations in the biologically relevant values of synaptic conductance. Astrocyte-mediated potentiation of inhibitory synaptic transmission markedly enhances the coherence of network oscillations over a broad range of model parameters. Astrocytic regulation of excitatory synaptic input improves the robustness of interneuron network gamma oscillations induced by physiologically relevant excitatory model drive. These findings suggest a mechanism, by which the astrocytes become involved in cognitive function and information processing through modulating fast neural network dynamics.
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9
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Forest fragmentation impacts the seasonality of Amazonian evergreen canopies. Nat Commun 2022; 13:917. [PMID: 35177619 PMCID: PMC8854568 DOI: 10.1038/s41467-022-28490-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Accepted: 01/27/2022] [Indexed: 11/09/2022] Open
Abstract
Predictions of the magnitude and timing of leaf phenology in Amazonian forests remain highly controversial. Here, we use terrestrial LiDAR surveys every two weeks spanning wet and dry seasons in Central Amazonia to show that plant phenology varies strongly across vertical strata in old-growth forests, but is sensitive to disturbances arising from forest fragmentation. In combination with continuous microclimate measurements, we find that when maximum daily temperatures reached 35 °C in the latter part of the dry season, the upper canopy of large trees in undisturbed forests lost plant material. In contrast, the understory greened up with increased light availability driven by the upper canopy loss, alongside increases in solar radiation, even during periods of drier soil and atmospheric conditions. However, persistently high temperatures in forest edges exacerbated the upper canopy losses of large trees throughout the dry season, whereas the understory in these light-rich environments was less dependent on the altered upper canopy structure. Our findings reveal a strong influence of edge effects on phenological controls in wet forests of Central Amazonia. Even evergreen tropical forests can have seasonal dynamics, which may be sensitive to disturbance. Here, the authors combine high-resolution remote sensing observations and microclimate data to show that forest fragmentation impacts canopy phenology dynamics in the Amazon forest.
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Noguchi M, Hoshizaki K, Matsushita M, Sugiura D, Yagihashi T, Saitoh T, Itabashi T, Kazuhide O, Shibata M, Hoshino D, Masaki T, Osumi K, Takahashi K, Suzuki W. Aboveground biomass increments over 26 years (1993-2019) in an old-growth cool-temperate forest in northern Japan. JOURNAL OF PLANT RESEARCH 2022; 135:69-79. [PMID: 34973093 PMCID: PMC8755688 DOI: 10.1007/s10265-021-01358-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2021] [Accepted: 11/07/2021] [Indexed: 05/30/2023]
Abstract
Assessing long-term changes in the biomass of old-growth forests with consideration of climate effects is essential for understanding forest ecosystem functions under a changing climate. Long-term biomass changes are the result of accumulated short-term changes, which can be affected by endogenous processes such as gap filling in small-scale canopy openings. Here, we used 26 years (1993-2019) of repeated tree census data in an old-growth, cool-temperate, mixed deciduous forest that contains three topographic units (riparian, denuded slope, and terrace) in northern Japan to document decadal changes in aboveground biomass (AGB) and their processes in relation to endogenous processes and climatic factors. AGB increased steadily over the 26 years in all topographic units, but different tree species contributed to the increase among the topographic units. AGB gain within each topographic unit exceeded AGB loss via tree mortality in most of the measurement periods despite substantial temporal variation in AGB loss. At the local scale, variations in AGB gain were partially explained by compensating growth of trees around canopy gaps. Climate affected the local-scale AGB gain: the gain was larger in the measurement periods with higher mean air temperature during the current summer but smaller in those with higher mean air temperature during the previous autumn, synchronously in all topographic units. The influences of decadal summer and autumn warming on AGB growth appeared to be counteracting, suggesting that the observed steady AGB increase in KRRF is not fully explained by the warming. Future studies should consider global and regional environmental factors such as elevated CO2 concentrations and nitrogen deposition, and include cool-temperate forests with a broader temperature range to improve our understanding on biomass accumulation in this type of forests under climate change.
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Affiliation(s)
- Mahoko Noguchi
- Tohoku Research Center, Forestry and Forest Products Research Institute, Morioka, 020-0123, Japan.
| | - Kazuhiko Hoshizaki
- Department of Biological Environment, Akita Prefectural University, Akita, 010-0195, Japan
| | - Michinari Matsushita
- Forest Tree Breeding Center, Forestry and Forest Products Research Institute, Hitachi, 319-1301, Japan
| | - Daiki Sugiura
- Department of Biological Environment, Akita Prefectural University, Akita, 010-0195, Japan
| | - Tsutomu Yagihashi
- Forestry and Forest Products Research Institute, Tsukuba, 305-8687, Japan
| | - Tomoyuki Saitoh
- Tohoku Research Center, Forestry and Forest Products Research Institute, Morioka, 020-0123, Japan
| | - Tomohiro Itabashi
- Department of Biological Environment, Akita Prefectural University, Akita, 010-0195, Japan
| | - Ohta Kazuhide
- Department of Biological Environment, Akita Prefectural University, Akita, 010-0195, Japan
| | - Mitsue Shibata
- Forestry and Forest Products Research Institute, Tsukuba, 305-8687, Japan
| | - Daisuke Hoshino
- Forestry and Forest Products Research Institute, Tsukuba, 305-8687, Japan
| | - Takashi Masaki
- Forestry and Forest Products Research Institute, Tsukuba, 305-8687, Japan
| | - Katsuhiro Osumi
- Field Science Center, Faculty of Agriculture, Tottori University (Retired), Tottori, 680-8553, Japan
| | - Kazunori Takahashi
- Kansai Research Center, Forestry and Forest Products Research Institute, Kyoto, 612-0855, Japan
| | - Wajirou Suzuki
- Forestry and Forest Products Research Institute (Retired), Tsukuba, 305-8687, Japan
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11
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Larjavaara M, Lu X, Chen X, Vastaranta M. Impact of rising temperatures on the biomass of humid old-growth forests of the world. CARBON BALANCE AND MANAGEMENT 2021; 16:31. [PMID: 34642849 PMCID: PMC8513374 DOI: 10.1186/s13021-021-00194-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Accepted: 10/06/2021] [Indexed: 05/11/2023]
Abstract
BACKGROUND Understanding how warming influence above-ground biomass in the world's forests is necessary for quantifying future global carbon budgets. A climate-driven decrease in future carbon stocks could dangerously strengthen climate change. Empirical methods for studying the temperature response of forests have important limitations, and modelling is needed to provide another perspective. Here we evaluate the impact of rising air temperature on the future above-ground biomass of old-growth forests using a model that explains well the observed current variation in the above-ground biomass over the humid lowland areas of the world based on monthly air temperature. RESULTS Applying this model to the monthly air temperature data for 1970-2000 and monthly air temperature projections for 2081-2100, we found that the above-ground biomass of old-growth forests is expected to decrease everywhere in the humid lowland areas except boreal regions. The temperature-driven decrease is estimated at 41% in the tropics and at 29% globally. CONCLUSIONS Our findings suggest that rising temperatures impact the above-ground biomass of old-growth forests dramatically. However, this impact could be mitigated by fertilization effects of increasing carbon dioxide concentration in the atmosphere and nitrogen deposition.
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Affiliation(s)
- Markku Larjavaara
- Institute of Ecology and Key Laboratory for Earth Surface Processes of the Ministry of Education, College of Urban and Environmental Sciences, Peking University, Beijing, China.
| | - Xiancheng Lu
- Institute of Ecology and Key Laboratory for Earth Surface Processes of the Ministry of Education, College of Urban and Environmental Sciences, Peking University, Beijing, China
| | - Xia Chen
- Institute of Ecology and Key Laboratory for Earth Surface Processes of the Ministry of Education, College of Urban and Environmental Sciences, Peking University, Beijing, China
| | - Mikko Vastaranta
- School of Forest Sciences, University of Eastern Finland, P.O. Box 111, 80101, Joensuu, Finland
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12
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Fischer R, Taubert F, Müller MS, Groeneveld J, Lehmann S, Wiegand T, Huth A. Accelerated forest fragmentation leads to critical increase in tropical forest edge area. SCIENCE ADVANCES 2021; 7:eabg7012. [PMID: 34516875 PMCID: PMC8442897 DOI: 10.1126/sciadv.abg7012] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2021] [Accepted: 07/16/2021] [Indexed: 06/02/2023]
Abstract
Large areas of tropical forests have been lost through deforestation, resulting in fragmented forest landscapes. However, the dynamics of forest fragmentation are still unknown, especially the critical forest edge areas, which are sources of carbon emissions due to increased tree mortality. We analyzed the changes in forest fragmentation for the entire tropics using high-resolution forest cover maps. We found that forest edge area increased from 27 to 31% of the total forest area in just 10 years, with the largest increase in Africa. The number of forest fragments increased by 20 million with consequences for connectivity of tropical landscapes. Simulations suggest that ongoing deforestation will further accelerate forest fragmentation. By 2100, 50% of tropical forest area will be at the forest edge, causing additional carbon emissions of up to 500 million MT carbon per year. Thus, efforts to limit fragmentation in the world’s tropical forests are important for climate change mitigation.
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Affiliation(s)
- Rico Fischer
- Helmholtz Centre for Environmental Research—UFZ, Department of Ecological Modelling, Permoserstrasse 15, 04318 Leipzig, Germany
| | - Franziska Taubert
- Helmholtz Centre for Environmental Research—UFZ, Department of Ecological Modelling, Permoserstrasse 15, 04318 Leipzig, Germany
| | - Michael S. Müller
- Helmholtz Centre for Environmental Research—UFZ, Department of Ecological Modelling, Permoserstrasse 15, 04318 Leipzig, Germany
| | - Jürgen Groeneveld
- Helmholtz Centre for Environmental Research—UFZ, Department of Ecological Modelling, Permoserstrasse 15, 04318 Leipzig, Germany
- TU Dresden, Institute of Forest Growth and Forest Computer Sciences, Piennerstrasse 8, 01735 Tharandt, Germany
- German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Puschestrasse 4, 04103 Leipzig, Germany
| | - Sebastian Lehmann
- Helmholtz Centre for Environmental Research—UFZ, Department of Ecological Modelling, Permoserstrasse 15, 04318 Leipzig, Germany
| | - Thorsten Wiegand
- Helmholtz Centre for Environmental Research—UFZ, Department of Ecological Modelling, Permoserstrasse 15, 04318 Leipzig, Germany
- German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Puschestrasse 4, 04103 Leipzig, Germany
| | - Andreas Huth
- Helmholtz Centre for Environmental Research—UFZ, Department of Ecological Modelling, Permoserstrasse 15, 04318 Leipzig, Germany
- German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Puschestrasse 4, 04103 Leipzig, Germany
- Osnabrück University, Institute of Environmental Systems Research, Barbarastrasse 12, 49076 Osnabrück, Germany
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Limin A, Slik F, Sukri RS, Chen S, Ahmad JA. Large tree species composition, not growth rates, is affected by topography in a Bornean tropical forest. Biotropica 2021. [DOI: 10.1111/btp.12969] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Army Limin
- Environmental and Life Sciences Programme Faculty of Science Universiti Brunei Darussalam Gadong Brunei
| | - Ferry Slik
- Environmental and Life Sciences Programme Faculty of Science Universiti Brunei Darussalam Gadong Brunei
| | - Rahayu Sukmaria Sukri
- Environmental and Life Sciences Programme Faculty of Science Universiti Brunei Darussalam Gadong Brunei
- Institute for Biodiversity and Environmental Research Universiti Brunei Darussalam Gadong Brunei
| | - Sheng‐Bin Chen
- College of Ecology and Environment Chengdu University of Technology Chengdu China
| | - Joffre Ali Ahmad
- Brunei Forestry Department Ministry of Primary Resources and Tourism Bandar Seri Begawan Brunei
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14
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Peters JMR, López R, Nolf M, Hutley LB, Wardlaw T, Cernusak LA, Choat B. Living on the edge: A continental-scale assessment of forest vulnerability to drought. GLOBAL CHANGE BIOLOGY 2021; 27:3620-3641. [PMID: 33852767 DOI: 10.1111/gcb.15641] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2021] [Accepted: 03/12/2021] [Indexed: 06/12/2023]
Abstract
Globally, forests are facing an increasing risk of mass tree mortality events associated with extreme droughts and higher temperatures. Hydraulic dysfunction is considered a key mechanism of drought-triggered dieback. By leveraging the climate breadth of the Australian landscape and a national network of research sites (Terrestrial Ecosystem Research Network), we conducted a continental-scale study of physiological and hydraulic traits of 33 native tree species from contrasting environments to disentangle the complexities of plant response to drought across communities. We found strong relationships between key plant hydraulic traits and site aridity. Leaf turgor loss point and xylem embolism resistance were correlated with minimum water potential experienced by each species. Across the data set, there was a strong coordination between hydraulic traits, including those linked to hydraulic safety, stomatal regulation and the cost of carbon investment into woody tissue. These results illustrate that aridity has acted as a strong selective pressure, shaping hydraulic traits of tree species across the Australian landscape. Hydraulic safety margins were constrained across sites, with species from wetter sites tending to have smaller safety margin compared with species at drier sites, suggesting trees are operating close to their hydraulic thresholds and forest biomes across the spectrum may be susceptible to shifts in climate that result in the intensification of drought.
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Affiliation(s)
- Jennifer M R Peters
- Hawkesbury Institute for the Environment, Western Sydney University, Richmond, NSW, Australia
| | - Rosana López
- Hawkesbury Institute for the Environment, Western Sydney University, Richmond, NSW, Australia
| | - Markus Nolf
- Hawkesbury Institute for the Environment, Western Sydney University, Richmond, NSW, Australia
| | - Lindsay B Hutley
- Research Institute for the Environment and Livelihoods, Charles Darwin University, Darwin, NT, Australia
| | - Tim Wardlaw
- ARC Centre for Forest Value, University of Tasmania, Hobart, Tas, Australia
| | - Lucas A Cernusak
- College of Science and Engineering, James Cook University, Cairns, Qld, Australia
| | - Brendan Choat
- Hawkesbury Institute for the Environment, Western Sydney University, Richmond, NSW, Australia
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15
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Assessing the Contrasting Effects of the Exceptional 2015 Drought on the Carbon Dynamics in Two Norway Spruce Forest Ecosystems. ATMOSPHERE 2021. [DOI: 10.3390/atmos12080988] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The occurrence of extreme drought poses a severe threat to forest ecosystems and reduces their capability to sequester carbon dioxide. This study analysed the impacts of a central European summer drought in 2015 on gross primary productivity (GPP) at two Norway spruce forest sites representing two contrasting climatic conditions—cold and humid climate at Bílý Kříž (CZ-BK1) vs. moderately warm and dry climate at Rájec (CZ-RAJ). The comparative analyses of GPP was based on a three-year eddy covariance dataset, where 2014 and 2016 represented years with normal conditions, while 2015 was characterized by dry conditions. A significant decline in the forest GPP was found during the dry year of 2015, reaching 14% and 6% at CZ-BK1 and CZ-RAJ, respectively. The reduction in GPP coincided with high ecosystem respiration (Reco) during the dry year period, especially during July and August, when several heat waves hit the region. Additional analyses of GPP decline during the dry year period suggested that a vapour pressure deficit played a more important role than the soil volumetric water content at both investigated sites, highlighting the often neglected importance of considering the species hydraulic strategy (isohydric vs. anisohydric) in drought impact assessments. The study indicates the high vulnerability of the Norway spruce forest to drought stress, especially at sites with precipitation equal or smaller than the atmospheric evaporative demand. Since central Europe is currently experiencing large-scale dieback of Norway spruce forests in lowlands and uplands (such as for CZ-RAJ conditions), the findings of this study may help to quantitatively assess the fate of these widespread cultures under future climate projections, and may help to delimitate the areas of their sustainable production.
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Souza CR, Coelho de Souza F, Maia VA, Aguiar‐Campos N, Coelho PA, Farrapo CL, Santos ABM, Araújo FC, Gianasi FM, Paula GGP, Morel JD, Fagundes NCA, Garcia PO, Santos PF, Silva WB, Fontes MAL, Santos RM. Tropical forests structure and diversity: A comparison of methodological choices. Methods Ecol Evol 2021. [DOI: 10.1111/2041-210x.13670] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
| | | | - Vinícius A. Maia
- Forest Sciences Department Federal University of Lavras Lavras Brazil
| | | | | | - Camila L. Farrapo
- Forest Sciences Department Federal University of Lavras Lavras Brazil
| | | | - Felipe C. Araújo
- Forest Sciences Department Federal University of Lavras Lavras Brazil
| | | | | | - Jean D. Morel
- Forest Sciences Department Federal University of Lavras Lavras Brazil
| | - Nathalle C. A. Fagundes
- Forest Sciences Department Federal University of Lavras Lavras Brazil
- Universidade Estadual de Minas Gerais Ituiutaba Brazil
| | | | - Paola F. Santos
- Forest Sciences Department Federal University of Lavras Lavras Brazil
| | - Wilder B. Silva
- Forest Sciences Department Federal University of Lavras Lavras Brazil
| | | | - Rubens M. Santos
- Forest Sciences Department Federal University of Lavras Lavras Brazil
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17
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Bennett AC, Dargie GC, Cuni-Sanchez A, Tshibamba Mukendi J, Hubau W, Mukinzi JM, Phillips OL, Malhi Y, Sullivan MJP, Cooper DLM, Adu-Bredu S, Affum-Baffoe K, Amani CA, Banin LF, Beeckman H, Begne SK, Bocko YE, Boeckx P, Bogaert J, Brncic T, Chezeaux E, Clark CJ, Daniels AK, de Haulleville T, Djuikouo Kamdem MN, Doucet JL, Evouna Ondo F, Ewango CEN, Feldpausch TR, Foli EG, Gonmadje C, Hall JS, Hardy OJ, Harris DJ, Ifo SA, Jeffery KJ, Kearsley E, Leal M, Levesley A, Makana JR, Mbayu Lukasu F, Medjibe VP, Mihindu V, Moore S, Nssi Begone N, Pickavance GC, Poulsen JR, Reitsma J, Sonké B, Sunderland TCH, Taedoumg H, Talbot J, Tuagben DS, Umunay PM, Verbeeck H, Vleminckx J, White LJT, Woell H, Woods JT, Zemagho L, Lewis SL. Resistance of African tropical forests to an extreme climate anomaly. Proc Natl Acad Sci U S A 2021; 118:e2003169118. [PMID: 34001597 PMCID: PMC8166131 DOI: 10.1073/pnas.2003169118] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
The responses of tropical forests to environmental change are critical uncertainties in predicting the future impacts of climate change. The positive phase of the 2015-2016 El Niño Southern Oscillation resulted in unprecedented heat and low precipitation in the tropics with substantial impacts on the global carbon cycle. The role of African tropical forests is uncertain as their responses to short-term drought and temperature anomalies have yet to be determined using on-the-ground measurements. African tropical forests may be particularly sensitive because they exist in relatively dry conditions compared with Amazonian or Asian forests, or they may be more resistant because of an abundance of drought-adapted species. Here, we report responses of structurally intact old-growth lowland tropical forests inventoried within the African Tropical Rainforest Observatory Network (AfriTRON). We use 100 long-term inventory plots from six countries each measured at least twice prior to and once following the 2015-2016 El Niño event. These plots experienced the highest temperatures and driest conditions on record. The record temperature did not significantly reduce carbon gains from tree growth or significantly increase carbon losses from tree mortality, but the record drought did significantly decrease net carbon uptake. Overall, the long-term biomass increase of these forests was reduced due to the El Niño event, but these plots remained a live biomass carbon sink (0.51 ± 0.40 Mg C ha-1 y-1) despite extreme environmental conditions. Our analyses, while limited to African tropical forests, suggest they may be more resistant to climatic extremes than Amazonian and Asian forests.
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Affiliation(s)
- Amy C Bennett
- School of Geography, University of Leeds, Leeds, LS2 9JT, United Kingdom;
| | - Greta C Dargie
- School of Geography, University of Leeds, Leeds, LS2 9JT, United Kingdom
| | - Aida Cuni-Sanchez
- Department of Environment and Geography, University of York, York, YO10 5NG, United Kingdom
- Department of Geography, University College London, London, WC1E 6BT, United Kingdom
| | - John Tshibamba Mukendi
- Service of Wood Biology, Royal Museum for Central Africa, Tervuren, 3080 Belgium
- Faculté de Gestion de Ressources Naturelles Renouvelables, Université de Kisangani, Kisangani, R408, Democratic Republic of Congo
- Faculté des Sciences Appliquées, Université de Mbujimayi, Mbujimayi, Democratic Republic of Congo
| | - Wannes Hubau
- School of Geography, University of Leeds, Leeds, LS2 9JT, United Kingdom
- Service of Wood Biology, Royal Museum for Central Africa, Tervuren, 3080 Belgium
- Department of Environment, Laboratory of Wood Technology, Ghent University, 9000 Ghent, Belgium
| | - Jacques M Mukinzi
- Democratic Republic of Congo Programme, Wildlife Conservation Society, Kinshasa, Democratic Republic of Congo
- Salonga National Park, Kinshasa, Democratic Republic of Congo
- World Wide Fund for Nature, 1196 Gland, Switzerland
| | - Oliver L Phillips
- School of Geography, University of Leeds, Leeds, LS2 9JT, United Kingdom
| | - Yadvinder Malhi
- Environmental Change Institute, School of Geography and the Environment, Oxford University, Oxford, OX1 3QY, United Kingdom
| | - Martin J P Sullivan
- School of Geography, University of Leeds, Leeds, LS2 9JT, United Kingdom
- Department of Natural Sciences, Manchester Metropolitan University, Manchester, M15 6BH, United Kingdom
| | - Declan L M Cooper
- Department of Geography, University College London, London, WC1E 6BT, United Kingdom
| | | | | | - Christian A Amani
- Université Officielle de Bukavu, Bukavu, Democratic Republic of Congo
- Center for International Forestry Research (CIFOR), Bogor 16115, Indonesia
| | - Lindsay F Banin
- Centre for Ecology and Hydrology, Penicuik, EH26 0QB, United Kingdom
| | - Hans Beeckman
- Service of Wood Biology, Royal Museum for Central Africa, Tervuren, 3080 Belgium
| | - Serge K Begne
- School of Geography, University of Leeds, Leeds, LS2 9JT, United Kingdom
- Plant Systematic and Ecology Laboratory, Higher Teachers' Training College, University of Yaounde I, Yaounde, Cameroon
| | - Yannick E Bocko
- Faculté des Sciences et Techniques, Laboratoire de Botanique et Ecologie, Université Marien Ngouabi, Brazzaville, Republic of Congo
| | - Pascal Boeckx
- Isotope Bioscience Laboratory (ISOFYS), Ghent University, 9000 Ghent, Belgium
| | - Jan Bogaert
- Biodiversity and Landscape Unit, Gembloux Agro-Bio Tech, Université de Liège, 5030 Gembloux, Belgium
| | - Terry Brncic
- Congo Programme, Wildlife Conservation Society, Brazzaville, Republic of Congo
| | | | - Connie J Clark
- Nicholas School of the Environment, Duke University, Durham, NC 27710
| | - Armandu K Daniels
- Forestry Development Authority of the Government of Liberia (FDA), Monrovia, Liberia
| | | | - Marie-Noël Djuikouo Kamdem
- Plant Systematic and Ecology Laboratory, Higher Teachers' Training College, University of Yaounde I, Yaounde, Cameroon
- Faculty of Science, Department of Botany and Plant Physiology, University of Buea, Buea, Cameroon
| | - Jean-Louis Doucet
- TERRA Teaching and Research Centre, Forest Is Life, Gembloux Agro-Bio Tech, University of Liège, 5030 Gembloux, Belgium
| | | | - Corneille E N Ewango
- Faculté de Gestion de Ressources Naturelles Renouvelables, Université de Kisangani, Kisangani, R408, Democratic Republic of Congo
- Democratic Republic of Congo Programme, Wildlife Conservation Society, Kinshasa, Democratic Republic of Congo
- Centre de Formation et de Recherche en Conservation Forestiere (CEFRECOF), Epulu, Democratic Republic of Congo
| | - Ted R Feldpausch
- Geography, College of Life and Environmental Sciences, University of Exeter, Exeter, EX4 4QE, United Kingdom
| | - Ernest G Foli
- Forestry Research Institute of Ghana (FORIG), Kumasi, Ghana
| | | | - Jefferson S Hall
- Forest Global Earth Observatory, Smithsonian Tropical Research Institute, Washington, DC 20560
| | - Olivier J Hardy
- Evolutionary Biology and Ecology, Faculté des Sciences, Université Libre de Bruxelles, 1050 Bruxelles, Belgium
| | - David J Harris
- Royal Botanic Garden Edinburgh, Edinburgh, EH3 5NZ, United Kingdom
| | - Suspense A Ifo
- École Normale Supérieure, Département des Sciences et Vie de la Terre, Laboratoire de Géomatique et d'Ecologie Tropicale Appliquée, Université Marien Ngouabi, Brazzaville, Republic of Congo
| | - Kathryn J Jeffery
- Biological and Environmental Sciences, University of Stirling, Stirling, FK9 4LA, United Kingdom
| | - Elizabeth Kearsley
- Department of Environment, Laboratory of Wood Technology, Ghent University, 9000 Ghent, Belgium
- Department of Environment, Computational & Applied Vegetation Ecology (Cavelab), Ghent University, 9000 Ghent, Belgium
| | - Miguel Leal
- Uganda Programme, Wildlife Conservation Society, Kampala, Uganda
| | - Aurora Levesley
- School of Geography, University of Leeds, Leeds, LS2 9JT, United Kingdom
| | - Jean-Remy Makana
- Faculté des Sciences, Laboratoire d'écologie et aménagement forestier, Université de Kisangani, Kisangani, Democratic Republic of Congo
| | - Faustin Mbayu Lukasu
- Faculté de Gestion de Ressources Naturelles Renouvelables, Université de Kisangani, Kisangani, R408, Democratic Republic of Congo
| | | | - Vianet Mihindu
- Commission of Central African Forests (COMIFAC), Yaounde, Cameroon
- Agence Nationale des Parcs Nationaux, Libreville, Gabon
| | - Sam Moore
- Environmental Change Institute, School of Geography and the Environment, Oxford University, Oxford, OX1 3QY, United Kingdom
| | | | | | | | - Jan Reitsma
- Bureau Waardenburg, 4101 CK Culemborg, The Netherlands
| | - Bonaventure Sonké
- Plant Systematic and Ecology Laboratory, Higher Teachers' Training College, University of Yaounde I, Yaounde, Cameroon
| | - Terry C H Sunderland
- Center for International Forestry Research (CIFOR), Bogor 16115, Indonesia
- Faculty of Forestry, University of British Columbia, Vancouver, BC V6T 1Z4, Canada
| | - Hermann Taedoumg
- Plant Systematic and Ecology Laboratory, Higher Teachers' Training College, University of Yaounde I, Yaounde, Cameroon
- Biodiversity International, Yaounde, Cameroon
| | - Joey Talbot
- School of Geography, University of Leeds, Leeds, LS2 9JT, United Kingdom
- Institute for Transport Studies, University of Leeds, Leeds, LS2 9JT, United Kingdom
| | - Darlington S Tuagben
- Forestry Development Authority of the Government of Liberia (FDA), Monrovia, Liberia
| | - Peter M Umunay
- Yale School of Forestry & Environmental Studies, Yale University, New Haven, CT 06511
- Wildlife Conservation Society, New York, NY 11224
| | - Hans Verbeeck
- Department of Environment, Computational & Applied Vegetation Ecology (Cavelab), Ghent University, 9000 Ghent, Belgium
| | - Jason Vleminckx
- International Center for Tropical Botany, Department of Biological Sciences, Florida International University, University Park, FL 33199
- Faculté des Sciences, Service d'Évolution Biologique et écologie, Université Libre de Bruxelles, 1050 Bruxelles, Belgium
| | - Lee J T White
- Biological and Environmental Sciences, University of Stirling, Stirling, FK9 4LA, United Kingdom
- Ministry of Forests, Seas, Environment and Climate, Libreville, Gabon
- Institut de Recherche en Ecologie Tropicale, Libreville, Gabon
| | | | - John T Woods
- William R. Tolbert, Jr. College of Agriculture and Forestry, University of Liberia, Monrovia, Liberia
| | - Lise Zemagho
- Université Officielle de Bukavu, Bukavu, Democratic Republic of Congo
| | - Simon L Lewis
- School of Geography, University of Leeds, Leeds, LS2 9JT, United Kingdom
- Department of Geography, University College London, London, WC1E 6BT, United Kingdom
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18
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Mature Andean forests as globally important carbon sinks and future carbon refuges. Nat Commun 2021; 12:2138. [PMID: 33837222 PMCID: PMC8035207 DOI: 10.1038/s41467-021-22459-8] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Accepted: 03/17/2021] [Indexed: 02/01/2023] Open
Abstract
It is largely unknown how South America's Andean forests affect the global carbon cycle, and thus regulate climate change. Here, we measure aboveground carbon dynamics over the past two decades in 119 monitoring plots spanning a range of >3000 m elevation across the subtropical and tropical Andes. Our results show that Andean forests act as strong sinks for aboveground carbon (0.67 ± 0.08 Mg C ha-1 y-1) and have a high potential to serve as future carbon refuges. Aboveground carbon dynamics of Andean forests are driven by abiotic and biotic factors, such as climate and size-dependent mortality of trees. The increasing aboveground carbon stocks offset the estimated C emissions due to deforestation between 2003 and 2014, resulting in a net total uptake of 0.027 Pg C y-1. Reducing deforestation will increase Andean aboveground carbon stocks, facilitate upward species migrations, and allow for recovery of biomass losses due to climate change.
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19
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Nunes MH, Jucker T, Riutta T, Svátek M, Kvasnica J, Rejžek M, Matula R, Majalap N, Ewers RM, Swinfield T, Valbuena R, Vaughn NR, Asner GP, Coomes DA. Recovery of logged forest fragments in a human-modified tropical landscape during the 2015-16 El Niño. Nat Commun 2021; 12:1526. [PMID: 33750781 PMCID: PMC7943823 DOI: 10.1038/s41467-020-20811-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2020] [Accepted: 12/02/2020] [Indexed: 01/29/2023] Open
Abstract
The past 40 years in Southeast Asia have seen about 50% of lowland rainforests converted to oil palm and other plantations, and much of the remaining forest heavily logged. Little is known about how fragmentation influences recovery and whether climate change will hamper restoration. Here, we use repeat airborne LiDAR surveys spanning the hot and dry 2015-16 El Niño Southern Oscillation event to measure canopy height growth across 3,300 ha of regenerating tropical forests spanning a logging intensity gradient in Malaysian Borneo. We show that the drought led to increased leaf shedding and branch fall. Short forest, regenerating after heavy logging, continued to grow despite higher evaporative demand, except when it was located close to oil palm plantations. Edge effects from the plantations extended over 300 metres into the forests. Forest growth on hilltops and slopes was particularly impacted by the combination of fragmentation and drought, but even riparian forests located within 40 m of oil palm plantations lost canopy height during the drought. Our results suggest that small patches of logged forest within plantation landscapes will be slow to recover, particularly as ENSO events are becoming more frequent. It is unclear whether tropical forest fragments within plantation landscapes are resilient to drought. Here the authors analyse LiDAR and ground-based data from the 2015-16 El Niño event across a logging intensity gradient in Borneo. Although regenerating forests continued to grow, canopy height near oil palm plantations decreased, and a strong edge effect extended up to at least 300 m away.
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Affiliation(s)
- Matheus Henrique Nunes
- Department of Plant Sciences and Conservation Research Institute, University of Cambridge, Cambridge, CB2 3QZ, UK. .,Department of Geosciences and Geography, University of Helsinki, Helsinki, 00014, Finland.
| | - Tommaso Jucker
- Department of Plant Sciences and Conservation Research Institute, University of Cambridge, Cambridge, CB2 3QZ, UK.,School of Biological Sciences, University of Bristol, Bristol, BS8 1TH, UK
| | - Terhi Riutta
- Department of Life Sciences, Imperial College London, Silwood Park Campus, Buckhurst Road, Ascot, Berkshire, SL5 7PY, UK.,School of Geography and the Environment, Environmental Change Institute, University of Oxford, Oxford, OX1 3QY, UK
| | - Martin Svátek
- Department of Forest Botany, Dendrology and Geobiocoenology, Faculty of Forestry and Wood Technology, Mendel University in Brno, 613 00, Brno, Czech Republic
| | - Jakub Kvasnica
- Department of Forest Botany, Dendrology and Geobiocoenology, Faculty of Forestry and Wood Technology, Mendel University in Brno, 613 00, Brno, Czech Republic
| | - Martin Rejžek
- Department of Forest Botany, Dendrology and Geobiocoenology, Faculty of Forestry and Wood Technology, Mendel University in Brno, 613 00, Brno, Czech Republic
| | - Radim Matula
- Department of Forest Ecology, Faculty of Forestry and Wood Sciences, Czech University of Life Sciences Prague, Kamýcká 129, Prague, 165 00, Czech Republic
| | | | - Robert M Ewers
- Department of Life Sciences, Imperial College London, Silwood Park Campus, Buckhurst Road, Ascot, Berkshire, SL5 7PY, UK
| | - Tom Swinfield
- Department of Plant Sciences and Conservation Research Institute, University of Cambridge, Cambridge, CB2 3QZ, UK
| | - Rubén Valbuena
- Department of Plant Sciences and Conservation Research Institute, University of Cambridge, Cambridge, CB2 3QZ, UK.,School of Natural Sciences, Bangor University, Gwynedd, LL57 2UW, UK
| | - Nicholas R Vaughn
- Center for Global Discovery and Conservation Science, Arizona State University, Tempe AZ and Hilo, Tempe, HI, USA
| | - Gregory P Asner
- Center for Global Discovery and Conservation Science, Arizona State University, Tempe AZ and Hilo, Tempe, HI, USA
| | - David A Coomes
- Department of Plant Sciences and Conservation Research Institute, University of Cambridge, Cambridge, CB2 3QZ, UK.
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20
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Vancutsem C, Achard F, Pekel JF, Vieilledent G, Carboni S, Simonetti D, Gallego J, Aragão LEOC, Nasi R. Long-term (1990-2019) monitoring of forest cover changes in the humid tropics. SCIENCE ADVANCES 2021; 7:7/10/eabe1603. [PMID: 33674308 PMCID: PMC7935368 DOI: 10.1126/sciadv.abe1603] [Citation(s) in RCA: 49] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Accepted: 01/21/2021] [Indexed: 05/22/2023]
Abstract
Accurate characterization of tropical moist forest changes is needed to support conservation policies and to quantify their contribution to global carbon fluxes more effectively. We document, at pantropical scale, the extent and changes (degradation, deforestation, and recovery) of these forests over the past three decades. We estimate that 17% of tropical moist forests have disappeared since 1990 with a remaining area of 1071 million hectares in 2019, from which 10% are degraded. Our study underlines the importance of the degradation process in these ecosystems, in particular, as a precursor of deforestation, and in the recent increase in tropical moist forest disturbances (natural and anthropogenic degradation or deforestation). Without a reduction of the present disturbance rates, undisturbed forests will disappear entirely in large tropical humid regions by 2050. Our study suggests that reinforcing actions are needed to prevent the initial degradation that leads to forest clearance in 45% of the cases.
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Affiliation(s)
- C Vancutsem
- European Commission, Joint Research Centre, Via E. Fermi 2749-TP 261, I-21027 Ispra (VA), Italy.
| | - F Achard
- European Commission, Joint Research Centre, Via E. Fermi 2749-TP 261, I-21027 Ispra (VA), Italy
| | - J-F Pekel
- European Commission, Joint Research Centre, Via E. Fermi 2749-TP 261, I-21027 Ispra (VA), Italy
| | - G Vieilledent
- European Commission, Joint Research Centre, Via E. Fermi 2749-TP 261, I-21027 Ispra (VA), Italy
- CIRAD, UMR AMAP, F-34398 Montpellier, France
- CIRAD, Forêts et Sociétés, F-34398 Montpellier, France
- AMAP, Univ Montpellier, CIRAD, CNRS, INRAE, IRD, Montpellier, France
| | - S Carboni
- GFT Italia Srl, Via Sile 18, Milan, Italy
| | - D Simonetti
- European Commission, Joint Research Centre, Via E. Fermi 2749-TP 261, I-21027 Ispra (VA), Italy
| | - J Gallego
- European Commission, Joint Research Centre, Via E. Fermi 2749-TP 261, I-21027 Ispra (VA), Italy
| | - L E O C Aragão
- National Institute for Space Research (INPE), São José dos Campos, Brazil
| | - R Nasi
- Center for International Forestry Research (CIFOR), Bogor, Indonesia
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21
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Walker AP, De Kauwe MG, Bastos A, Belmecheri S, Georgiou K, Keeling RF, McMahon SM, Medlyn BE, Moore DJP, Norby RJ, Zaehle S, Anderson-Teixeira KJ, Battipaglia G, Brienen RJW, Cabugao KG, Cailleret M, Campbell E, Canadell JG, Ciais P, Craig ME, Ellsworth DS, Farquhar GD, Fatichi S, Fisher JB, Frank DC, Graven H, Gu L, Haverd V, Heilman K, Heimann M, Hungate BA, Iversen CM, Joos F, Jiang M, Keenan TF, Knauer J, Körner C, Leshyk VO, Leuzinger S, Liu Y, MacBean N, Malhi Y, McVicar TR, Penuelas J, Pongratz J, Powell AS, Riutta T, Sabot MEB, Schleucher J, Sitch S, Smith WK, Sulman B, Taylor B, Terrer C, Torn MS, Treseder KK, Trugman AT, Trumbore SE, van Mantgem PJ, Voelker SL, Whelan ME, Zuidema PA. Integrating the evidence for a terrestrial carbon sink caused by increasing atmospheric CO 2. THE NEW PHYTOLOGIST 2021; 229:2413-2445. [PMID: 32789857 DOI: 10.1111/nph.16866] [Citation(s) in RCA: 124] [Impact Index Per Article: 41.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Accepted: 07/06/2020] [Indexed: 05/22/2023]
Abstract
Atmospheric carbon dioxide concentration ([CO2 ]) is increasing, which increases leaf-scale photosynthesis and intrinsic water-use efficiency. These direct responses have the potential to increase plant growth, vegetation biomass, and soil organic matter; transferring carbon from the atmosphere into terrestrial ecosystems (a carbon sink). A substantial global terrestrial carbon sink would slow the rate of [CO2 ] increase and thus climate change. However, ecosystem CO2 responses are complex or confounded by concurrent changes in multiple agents of global change and evidence for a [CO2 ]-driven terrestrial carbon sink can appear contradictory. Here we synthesize theory and broad, multidisciplinary evidence for the effects of increasing [CO2 ] (iCO2 ) on the global terrestrial carbon sink. Evidence suggests a substantial increase in global photosynthesis since pre-industrial times. Established theory, supported by experiments, indicates that iCO2 is likely responsible for about half of the increase. Global carbon budgeting, atmospheric data, and forest inventories indicate a historical carbon sink, and these apparent iCO2 responses are high in comparison to experiments and predictions from theory. Plant mortality and soil carbon iCO2 responses are highly uncertain. In conclusion, a range of evidence supports a positive terrestrial carbon sink in response to iCO2 , albeit with uncertain magnitude and strong suggestion of a role for additional agents of global change.
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Affiliation(s)
- Anthony P Walker
- Environmental Sciences Division and Climate Change Science Institute, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA
| | - Martin G De Kauwe
- ARC Centre of Excellence for Climate Extremes, University of New South Wales, Sydney, NSW, 2052, Australia
- Climate Change Research Centre, University of New South Wales, Sydney, NSW, 2052, Australia
- Evolution and Ecology Research Centre, University of New South Wales, Sydney, NSW, 2052, Australia
| | - Ana Bastos
- Ludwig Maximilians University of Munich, Luisenstr. 37, Munich, 80333, Germany
| | - Soumaya Belmecheri
- Laboratory of Tree Ring Research, University of Arizona, 1215 E Lowell St, Tucson, AZ, 85721, USA
| | - Katerina Georgiou
- Department of Earth System Science, Stanford University, Stanford, CA, 94305, USA
| | - Ralph F Keeling
- Scripps Institution of Oceanography, UC San Diego, La Jolla, CA, 92093, USA
| | - Sean M McMahon
- Smithsonian Environmental Research Center, Edgewater, MD, 21037, USA
| | - Belinda E Medlyn
- Hawkesbury Institute for the Environment, Western Sydney University, Locked Bag 1797, Penrith, NSW, 2751, Australia
| | - David J P Moore
- School of Natural Resources and the Environment, 1064 East Lowell Street, Tucson, AZ, 85721, USA
| | - Richard J Norby
- Environmental Sciences Division and Climate Change Science Institute, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA
| | - Sönke Zaehle
- Max Planck Institute for Biogeochemistry, Hans-Knöll-Str. 10, Jena, 07745, Germany
| | - Kristina J Anderson-Teixeira
- Conservation Ecology Center, Smithsonian Conservation Biology Institute, MRC 5535, Front Royal, VA, 22630, USA
- Center for Tropical Forest Science-Forest Global Earth Observatory, Smithsonian Tropical Research Institute, Panama City, Panama
| | - Giovanna Battipaglia
- Department of Environmental, Biological and Pharmaceutical Sciences and Technologies, Università della Campania, Caserta, 81100, Italy
| | | | - Kristine G Cabugao
- Environmental Sciences Division and Climate Change Science Institute, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA
| | - Maxime Cailleret
- INRAE, UMR RECOVER, Aix-Marseille Université, 3275 route de Cézanne, Aix-en-Provence Cedex 5, 13182, France
- Swiss Federal Institute for Forest Snow and Landscape Research (WSL), Zürcherstrasse 111, 8903 Birmensdorf, Switzerland
| | - Elliott Campbell
- Department of Geography, University of California Santa Barbara, Santa Barbara, CA, 93106, USA
| | - Josep G Canadell
- CSIRO Oceans and Atmosphere, GPO Box 1700, Canberra, ACT, 2601, Australia
| | - Philippe Ciais
- Laboratoire des Sciences du Climat et de l'Environnement, LSCE/IPSL, CEA-CNRS-UVSQ, Université Paris-Saclay, Gif-sur-Yvette, F-91191, France
| | - Matthew E Craig
- Environmental Sciences Division and Climate Change Science Institute, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA
| | - David S Ellsworth
- Hawkesbury Institute for the Environment, Western Sydney University, Locked Bag 1797, Penrith, NSW, 2751, Australia
| | - Graham D Farquhar
- Plant Sciences, Research School of Biology, The Australian National University, Canberra, ACT, 2601, Australia
| | - Simone Fatichi
- Department of Civil and Environmental Engineering, National University of Singapore, 1 Engineering Drive 2, Singapore, 117576, Singapore
- Institute of Environmental Engineering, ETH Zurich, Stefano-Franscini Platz 5, Zurich, 8093, Switzerland
| | - Joshua B Fisher
- Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Dr., Pasadena, CA, 91109, USA
| | - David C Frank
- Laboratory of Tree Ring Research, University of Arizona, 1215 E Lowell St, Tucson, AZ, 85721, USA
| | - Heather Graven
- Department of Physics, Imperial College London, South Kensington Campus, London, SW7 2AZ, UK
| | - Lianhong Gu
- Environmental Sciences Division and Climate Change Science Institute, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA
| | - Vanessa Haverd
- CSIRO Oceans and Atmosphere, GPO Box 1700, Canberra, ACT, 2601, Australia
| | - Kelly Heilman
- Laboratory of Tree Ring Research, University of Arizona, 1215 E Lowell St, Tucson, AZ, 85721, USA
| | - Martin Heimann
- Max Planck Institute for Biogeochemistry, Hans-Knöll-Str. 10, Jena, 07745, Germany
| | - Bruce A Hungate
- Center for Ecosystem Science and Society, Northern Arizona University, Flagstaff, AZ, 86011, USA
| | - Colleen M Iversen
- Environmental Sciences Division and Climate Change Science Institute, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA
| | - Fortunat Joos
- Climate and Environmental Physics, Physics Institute and Oeschger Centre for Climate Change Research, University of Bern, Sidlerstr. 5, Bern, CH-3012, Switzerland
| | - Mingkai Jiang
- Hawkesbury Institute for the Environment, Western Sydney University, Locked Bag 1797, Penrith, NSW, 2751, Australia
| | - Trevor F Keenan
- Department of Environmental Science, Policy and Management, UC Berkeley, Berkeley, CA, 94720, USA
- Earth and Environmental Sciences Area, Lawrence Berkeley National Lab., Berkeley, CA, 94720, USA
| | - Jürgen Knauer
- CSIRO Oceans and Atmosphere, GPO Box 1700, Canberra, ACT, 2601, Australia
| | - Christian Körner
- Department of Environmental Sciences, Botany, University of Basel, Basel, 4056, Switzerland
| | - Victor O Leshyk
- Center for Ecosystem Science and Society, Northern Arizona University, Flagstaff, AZ, 86011, USA
| | - Sebastian Leuzinger
- School of Science, Auckland University of Technology, Auckland, 1142, New Zealand
| | - Yao Liu
- Environmental Sciences Division and Climate Change Science Institute, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA
| | - Natasha MacBean
- Department of Geography, Indiana University, Bloomington, IN, 47405, USA
| | - Yadvinder Malhi
- School of Geography and the Environment, University of Oxford, Oxford, OX1 3QY, UK
| | - Tim R McVicar
- CSIRO Land and Water, GPO Box 1700, Canberra, ACT, 2601, Australia
- Australian Research Council Centre of Excellence for Climate Extremes, 142 Mills Rd, Australian National University, Canberra, ACT, 2601, Australia
| | - Josep Penuelas
- CSIC, Global Ecology CREAF-CSIC-UAB, Bellaterra, Barcelona, Catalonia, 08193, Spain
- CREAF, Cerdanyola del Vallès, Barcelona, Catalonia, 08193, Spain
| | - Julia Pongratz
- Ludwig Maximilians University of Munich, Luisenstr. 37, Munich, 80333, Germany
- Max Planck Institute for Meteorology, Bundesstr. 53, 20146 Hamburg, Germany
| | - A Shafer Powell
- Environmental Sciences Division and Climate Change Science Institute, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA
| | - Terhi Riutta
- School of Geography and the Environment, University of Oxford, Oxford, OX1 3QY, UK
| | - Manon E B Sabot
- ARC Centre of Excellence for Climate Extremes, University of New South Wales, Sydney, NSW, 2052, Australia
- Climate Change Research Centre, University of New South Wales, Sydney, NSW, 2052, Australia
- Evolution and Ecology Research Centre, University of New South Wales, Sydney, NSW, 2052, Australia
| | - Juergen Schleucher
- Department of Medical Biochemistry & Biophysics, Umeå University, Umea, 901 87, Sweden
| | - Stephen Sitch
- College of Life and Environmental Sciences, University of Exeter, Exeter, Laver Building, EX4 4QF, UK
| | - William K Smith
- School of Natural Resources and the Environment, 1064 East Lowell Street, Tucson, AZ, 85721, USA
| | - Benjamin Sulman
- Environmental Sciences Division and Climate Change Science Institute, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA
| | - Benton Taylor
- Smithsonian Environmental Research Center, Edgewater, MD, 21037, USA
| | - César Terrer
- Physical and Life Sciences Directorate, Lawrence Livermore National Laboratory, Livermore, CA, 94550, USA
| | - Margaret S Torn
- Earth and Environmental Sciences Area, Lawrence Berkeley National Lab., Berkeley, CA, 94720, USA
| | - Kathleen K Treseder
- Department of Ecology and Evolutionary Biology, University of California Irvine, Irvine, CA, 92697, USA
| | - Anna T Trugman
- Department of Geography, 1832 Ellison Hall, Santa Barbara, CA, 93016, USA
| | - Susan E Trumbore
- Max Planck Institute for Biogeochemistry, Hans-Knöll-Str. 10, Jena, 07745, Germany
| | | | - Steve L Voelker
- Department of Environmental and Forest Biology, State University of New York College of Environmental Science and Forestry, Syracuse, NY, 13210, USA
| | - Mary E Whelan
- Department of Environmental Sciences, Rutgers University, 14 College Farm Road, New Brunswick, NJ, 08901, USA
| | - Pieter A Zuidema
- Forest Ecology and Forest Management group, Wageningen University, PO Box 47, Wageningen, 6700 AA, the Netherlands
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22
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Global tree-ring analysis reveals rapid decrease in tropical tree longevity with temperature. Proc Natl Acad Sci U S A 2020; 117:33358-33364. [PMID: 33318167 DOI: 10.1073/pnas.2003873117] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Forests are the largest terrestrial biomass pool, with over half of this biomass stored in the highly productive tropical lowland forests. The future evolution of forest biomass depends critically on the response of tree longevity and growth rates to future climate. We present an analysis of the variation in tree longevity and growth rate using tree-ring data of 3,343 populations and 438 tree species and assess how climate controls growth and tree longevity across world biomes. Tropical trees grow, on average, two times faster compared to trees from temperate and boreal biomes and live significantly shorter, on average (186 ± 138 y compared to 322 ± 201 y outside the tropics). At the global scale, growth rates and longevity covary strongly with temperature. Within the warm tropical lowlands, where broadleaf species dominate the vegetation, we find consistent decreases in tree longevity with increasing aridity, as well as a pronounced reduction in longevity above mean annual temperatures of 25.4 °C. These independent effects of temperature and water availability on tree longevity in the tropics are consistent with theoretical predictions of increases in evaporative demands at the leaf level under a warmer and drier climate and could explain observed increases in tree mortality in tropical forests, including the Amazon, and shifts in forest composition in western Africa. Our results suggest that conditions supporting only lower tree longevity in the tropical lowlands are likely to expand under future drier and especially warmer climates.
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23
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Aguirre-Gutiérrez J, Malhi Y, Lewis SL, Fauset S, Adu-Bredu S, Affum-Baffoe K, Baker TR, Gvozdevaite A, Hubau W, Moore S, Peprah T, Ziemińska K, Phillips OL, Oliveras I. Long-term droughts may drive drier tropical forests towards increased functional, taxonomic and phylogenetic homogeneity. Nat Commun 2020; 11:3346. [PMID: 32620761 PMCID: PMC7335099 DOI: 10.1038/s41467-020-16973-4] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Accepted: 05/29/2020] [Indexed: 11/18/2022] Open
Abstract
Tropical ecosystems adapted to high water availability may be highly impacted by climatic changes that increase soil and atmospheric moisture deficits. Many tropical regions are experiencing significant changes in climatic conditions, which may induce strong shifts in taxonomic, functional and phylogenetic diversity of forest communities. However, it remains unclear if and to what extent tropical forests are shifting in these facets of diversity along climatic gradients in response to climate change. Here, we show that changes in climate affected all three facets of diversity in West Africa in recent decades. Taxonomic and functional diversity increased in wetter forests but tended to decrease in forests with drier climate. Phylogenetic diversity showed a large decrease along a wet-dry climatic gradient. Notably, we find that all three facets of diversity tended to be higher in wetter forests. Drier forests showed functional, taxonomic and phylogenetic homogenization. Understanding how different facets of diversity respond to a changing environment across climatic gradients is essential for effective long-term conservation of tropical forest ecosystems. Different aspects of biodiversity may not necessarily converge in their response to climate change. Here, the authors investigate 25-year shifts in taxonomic, functional and phylogenetic diversity of tropical forests along a spatial climate gradient in West Africa, showing that drier forests are less stable than wetter forests.
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Affiliation(s)
- Jesús Aguirre-Gutiérrez
- Environmental Change Institute, School of Geography and the Environment, University of Oxford, Oxford, UK. .,Biodiversity Dynamics, Naturalis Biodiversity Center, Leiden, The Netherlands.
| | - Yadvinder Malhi
- Environmental Change Institute, School of Geography and the Environment, University of Oxford, Oxford, UK
| | - Simon L Lewis
- Ecology and Global Change, School of Geography, University of Leeds, Leeds, West Yorkshire, UK.,Department of Geography, University College London, London, UK
| | - Sophie Fauset
- School of Geography, Earth and Environmental Science, University of Plymouth, Plymouth, UK
| | - Stephen Adu-Bredu
- CSIR-Forestry Research Institute of Ghana, University Post Office, KNUST, Kumasi, Ghana
| | | | - Timothy R Baker
- Ecology and Global Change, School of Geography, University of Leeds, Leeds, West Yorkshire, UK
| | - Agne Gvozdevaite
- Environmental Change Institute, School of Geography and the Environment, University of Oxford, Oxford, UK
| | - Wannes Hubau
- Ecology and Global Change, School of Geography, University of Leeds, Leeds, West Yorkshire, UK.,Service of Wood Biology, Royal Museum for Central Africa, Tervuren, Belgium
| | - Sam Moore
- Environmental Change Institute, School of Geography and the Environment, University of Oxford, Oxford, UK
| | - Theresa Peprah
- CSIR-Forestry Research Institute of Ghana, University Post Office, KNUST, Kumasi, Ghana
| | - Kasia Ziemińska
- Arnold Arboretum of Harvard University, Boston, MA, USA.,Department of Plant Ecology and Evolution, Uppsala University, Uppsala, Sweden
| | - Oliver L Phillips
- Ecology and Global Change, School of Geography, University of Leeds, Leeds, West Yorkshire, UK
| | - Imma Oliveras
- Environmental Change Institute, School of Geography and the Environment, University of Oxford, Oxford, UK
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24
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Yang H, Ciais P, Santoro M, Huang Y, Li W, Wang Y, Bastos A, Goll D, Arneth A, Anthoni P, Arora VK, Friedlingstein P, Harverd V, Joetzjer E, Kautz M, Lienert S, Nabel JEMS, O'Sullivan M, Sitch S, Vuichard N, Wiltshire A, Zhu D. Comparison of forest above-ground biomass from dynamic global vegetation models with spatially explicit remotely sensed observation-based estimates. GLOBAL CHANGE BIOLOGY 2020; 26:3997-4012. [PMID: 32427397 DOI: 10.1111/gcb.15117] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2019] [Accepted: 03/19/2020] [Indexed: 06/11/2023]
Abstract
Gaps in our current understanding and quantification of biomass carbon stocks, particularly in tropics, lead to large uncertainty in future projections of the terrestrial carbon balance. We use the recently published GlobBiomass data set of forest above-ground biomass (AGB) density for the year 2010, obtained from multiple remote sensing and in situ observations at 100 m spatial resolution to evaluate AGB estimated by nine dynamic global vegetation models (DGVMs). The global total forest AGB of the nine DGVMs is 365 ± 66 Pg C, the spread corresponding to the standard deviation between models, compared to 275 Pg C with an uncertainty of ~13.5% from GlobBiomass. Model-data discrepancy in total forest AGB can be attributed to their discrepancies in the AGB density and/or forest area. While DGVMs represent the global spatial gradients of AGB density reasonably well, they only have modest ability to reproduce the regional spatial gradients of AGB density at scales below 1000 km. The 95th percentile of AGB density (AGB95 ) in tropics can be considered as the potential maximum of AGB density which can be reached for a given annual precipitation. GlobBiomass data show local deficits of AGB density compared to the AGB95 , particularly in transitional and/or wet regions in tropics. We hypothesize that local human disturbances cause more AGB density deficits from GlobBiomass than from DGVMs, which rarely represent human disturbances. We then analyse empirical relationships between AGB density deficits and forest cover changes, population density, burned areas and livestock density. Regression analysis indicated that more than 40% of the spatial variance of AGB density deficits in South America and Africa can be explained; in Southeast Asia, these factors explain only ~25%. This result suggests TRENDY v6 DGVMs tend to underestimate biomass loss from diverse and widespread anthropogenic disturbances, and as a result overestimate turnover time in AGB.
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Affiliation(s)
- Hui Yang
- Laboratoire des Sciences du Climat et de l'Environnement, LSCE/IPSL, CEA-CNRS-UVSQ, Université Paris-Saclay, Gif-sur-Yvette, France
| | - Philippe Ciais
- Laboratoire des Sciences du Climat et de l'Environnement, LSCE/IPSL, CEA-CNRS-UVSQ, Université Paris-Saclay, Gif-sur-Yvette, France
| | | | - Yuanyuan Huang
- Laboratoire des Sciences du Climat et de l'Environnement, LSCE/IPSL, CEA-CNRS-UVSQ, Université Paris-Saclay, Gif-sur-Yvette, France
- CSIRO Oceans and Atmosphere, Aspendale, Vic., Australia
| | - Wei Li
- Department of Earth System Science, Ministry of Education Key Laboratory for Earth System Modeling, Tsinghua University, Beijing, China
| | - Yilong Wang
- Laboratoire des Sciences du Climat et de l'Environnement, LSCE/IPSL, CEA-CNRS-UVSQ, Université Paris-Saclay, Gif-sur-Yvette, France
| | - Ana Bastos
- Department für Geographie, Ludwig-Maximilians-Universität München, Munchen, Germany
| | - Daniel Goll
- Department of Geography, University of Augsburg, Augsburg, Germany
| | - Almut Arneth
- Institute of Meteorology and Climate Research/Atmospheric Environmental Research, Karlsruhe Institute of Technology, Garmisch-Partenkirchen, Germany
| | - Peter Anthoni
- Institute of Meteorology and Climate Research/Atmospheric Environmental Research, Karlsruhe Institute of Technology, Garmisch-Partenkirchen, Germany
| | - Vivek K Arora
- Canadian Centre for Climate Modelling and Analysis, Climate Research Division, Environment and Climate Change Canada, Victoria, BC, Canada
| | - Pierre Friedlingstein
- College of Engineering, Mathematics and Physical Sciences, University of Exeter, Exeter, UK
- LMD/IPSL, ENS, PSL Université, École Polytechnique, Institut Polytechnique de Paris, Sorbonne Université, CNRS, Paris, France
| | | | - Emilie Joetzjer
- CNRM, Université de Toulouse, Météo-France, CNRS, Toulouse, France
| | - Markus Kautz
- Department of Forest Health, Forest Research Institute Baden-Württemberg, Freiburg, Germany
| | - Sebastian Lienert
- Climate and Environmental Physics, Physics Institute, University of Bern, Bern, Switzerland
- Oeschger Centre for Climate Change Research, University of Bern, Bern, Switzerland
| | | | - Michael O'Sullivan
- College of Engineering, Mathematics and Physical Sciences, University of Exeter, Exeter, UK
| | - Stephen Sitch
- College of Life and Environmental Sciences, University of Exeter, Exeter, UK
| | - Nicolas Vuichard
- Laboratoire des Sciences du Climat et de l'Environnement, LSCE/IPSL, CEA-CNRS-UVSQ, Université Paris-Saclay, Gif-sur-Yvette, France
| | | | - Dan Zhu
- Laboratoire des Sciences du Climat et de l'Environnement, LSCE/IPSL, CEA-CNRS-UVSQ, Université Paris-Saclay, Gif-sur-Yvette, France
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25
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Carbon declines along tropical forest edges correspond to heterogeneous effects on canopy structure and function. Proc Natl Acad Sci U S A 2020; 117:7863-7870. [PMID: 32229568 DOI: 10.1073/pnas.1914420117] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Nearly 20% of tropical forests are within 100 m of a nonforest edge, a consequence of rapid deforestation for agriculture. Despite widespread conversion, roughly 1.2 billion ha of tropical forest remain, constituting the largest terrestrial component of the global carbon budget. Effects of deforestation on carbon dynamics in remnant forests, and spatial variation in underlying changes in structure and function at the plant scale, remain highly uncertain. Using airborne imaging spectroscopy and light detection and ranging (LiDAR) data, we mapped and quantified changes in forest structure and foliar characteristics along forest/oil palm boundaries in Malaysian Borneo to understand spatial and temporal variation in the influence of edges on aboveground carbon and associated changes in ecosystem structure and function. We uncovered declines in aboveground carbon averaging 22% along edges that extended over 100 m into the forest. Aboveground carbon losses were correlated with significant reductions in canopy height and leaf mass per area and increased foliar phosphorus, three plant traits related to light capture and growth. Carbon declines amplified with edge age. Our results indicate that carbon losses along forest edges can arise from multiple, distinct effects on canopy structure and function that vary with edge age and environmental conditions, pointing to a need for consideration of differences in ecosystem sensitivity when developing land-use and conservation strategies. Our findings reveal that, although edge effects on ecosystem structure and function vary, forests neighboring agricultural plantations are consistently vulnerable to long-lasting negative effects on fundamental ecosystem characteristics controlling primary productivity and carbon storage.
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26
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Recurrence Analysis of Vegetation Indices for Highlighting the Ecosystem Response to Drought Events: An Application to the Amazon Forest. REMOTE SENSING 2020. [DOI: 10.3390/rs12060907] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Forests are important in sequestering CO2 and therefore play a significant role in climate change. However, the CO2 cycle is conditioned by drought events that alter the rate of photosynthesis, which is the principal physiological action of plants in transforming CO2 into biological energy. This study applied recurrence quantification analysis (RQA) to describe the evolution of photosynthesis-related indices to highlight disturbance alterations produced by the Atlantic Multidecadal Oscillation (AMO, years 2005 and 2010) and the El Niño-Southern Oscillation (ENSO, year 2015) in the Amazon forest. The analysis was carried out using Moderate Resolution Imaging Spectroradiometer (MODIS) images to build time series of the enhanced vegetation index (EVI), the normalized difference water index (NDWI), and the land surface temperature (LST) covering the period 2001–2018. The results did not show significant variations produced by AMO throughout the study area, while a disruption due to the global warming phase linked to the extreme ENSO event occurred, and the forest was able to recover. In addition, spatial differences in the response of the forest to the ENSO event were found. These findings show that the application of RQA to the time series of vegetation indices supports the evaluation of the forest ecosystem response to disruptive events. This approach provides information on the capacity of the forest to recover after a disruptive event and, therefore is useful to estimate the resilience of this particular ecosystem.
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27
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Rutishauser E, Wright SJ, Condit R, Hubbell SP, Davies SJ, Muller-Landau HC. Testing for changes in biomass dynamics in large-scale forest datasets. GLOBAL CHANGE BIOLOGY 2020; 26:1485-1498. [PMID: 31498520 DOI: 10.1111/gcb.14833] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2019] [Accepted: 08/27/2019] [Indexed: 06/10/2023]
Abstract
Tropical forest responses to climate and atmospheric change are critical to the future of the global carbon budget. Recent studies have reported increases in estimated above-ground biomass (EAGB) stocks, productivity, and mortality in old-growth tropical forests. These increases could reflect a shift in forest functioning due to global change and/or long-lasting recovery from past disturbance. We introduce a novel approach to disentangle the relative contributions of these mechanisms by decomposing changes in whole-plot biomass fluxes into contributions from changes in the distribution of gap-successional stages and changes in fluxes for a given stage. Using 30 years of forest dynamic data at Barro Colorado Island, Panama, we investigated temporal variation in EAGB fluxes as a function of initial EAGB (EAGBi ) in 10 × 10 m quadrats. Productivity and mortality fluxes both increased strongly with initial quadrat EAGB. The distribution of EAGB (and thus EAGBi ) across quadrats hardly varied over 30 years (and seven censuses). EAGB fluxes as a function of EAGBi varied largely and significantly among census intervals, with notably higher productivity in 1985-1990 associated with recovery from the 1982-1983 El Niño event. Variation in whole-plot fluxes among census intervals was explained overwhelmingly by variation in fluxes as a function of EAGBi , with essentially no contribution from changes in EAGBi distributions. The high observed temporal variation in productivity and mortality suggests that this forest is very sensitive to climate variability. There was no consistent long-term trend in productivity, mortality, or biomass in this forest over 30 years, although the temporal variability in productivity and mortality was so strong that it could well mask a substantial trend. Accurate prediction of future tropical forest carbon budgets will require accounting for disturbance-recovery dynamics and understanding temporal variability in productivity and mortality.
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Affiliation(s)
| | | | | | - Stephen P Hubbell
- Department of Ecology and Evolutionary Biology, University of California, Los Angeles, CA, USA
| | - Stuart J Davies
- Center for Tropical Forest Science-Forest Global Earth Observatory, Smithsonian Tropical Research Institute, Panama City, Panama
- Department of Botany, National Museum of Natural History, Washington, DC, USA
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28
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Hansen MC, Wang L, Song XP, Tyukavina A, Turubanova S, Potapov PV, Stehman SV. The fate of tropical forest fragments. SCIENCE ADVANCES 2020; 6:eaax8574. [PMID: 32195340 PMCID: PMC7065873 DOI: 10.1126/sciadv.aax8574] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2019] [Accepted: 12/03/2019] [Indexed: 05/06/2023]
Abstract
Tropical forest fragmentation results in habitat and biodiversity loss and increased carbon emissions. Here, we link an increased likelihood of tropical forest loss to decreasing fragment size, particularly in primary forests. The relationship holds for protected areas, albeit with half the rate of loss compared with all fragments. The fact that disturbance increases as primary forest fragment size decreases reflects higher land use pressures and improved access for resource extraction and/or conversion in smaller fragments. Large remaining forest fragments are found in the Amazon and Congo Basins and Insular Southeast Asia, with the majority of large extent/low loss fragments located in the Amazon. Tropical areas without large fragments, including Central America, West Africa, and mainland Southeast Asia, have higher loss within and outside of protected areas. Results illustrate the need for rigorous land use planning, management, and enforcement in maintaining large tropical forest fragments and restoring regions of advanced fragmentation.
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Affiliation(s)
- Matthew C. Hansen
- Department of Geographical Sciences, University of Maryland, College Park, MD 20740, USA
- Corresponding author.
| | - Lei Wang
- State Key Laboratory of Remote Sensing Science, Institute of Remote Sensing and Digital Earth, Chinese Academy of Sciences, Beijing 100101, China
| | - Xiao-Peng Song
- Department of Geographical Sciences, University of Maryland, College Park, MD 20740, USA
- Department of Geosciences, Texas Tech University, Lubbock, TX 79409, USA
| | - Alexandra Tyukavina
- Department of Geographical Sciences, University of Maryland, College Park, MD 20740, USA
| | - Svetlana Turubanova
- Department of Geographical Sciences, University of Maryland, College Park, MD 20740, USA
| | - Peter V. Potapov
- Department of Geographical Sciences, University of Maryland, College Park, MD 20740, USA
| | - Stephen V. Stehman
- State University of New York College of Environmental Science and Forestry, Syracuse, NY 13210, USA
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29
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Requena Suarez D, Rozendaal DMA, De Sy V, Phillips OL, Alvarez‐Dávila E, Anderson‐Teixeira K, Araujo‐Murakami A, Arroyo L, Baker TR, Bongers F, Brienen RJW, Carter S, Cook‐Patton SC, Feldpausch TR, Griscom BW, Harris N, Hérault B, Honorio Coronado EN, Leavitt SM, Lewis SL, Marimon BS, Monteagudo Mendoza A, Kassi N'dja J, N'Guessan AE, Poorter L, Qie L, Rutishauser E, Sist P, Sonké B, Sullivan MJP, Vilanova E, Wang MMH, Martius C, Herold M. Estimating aboveground net biomass change for tropical and subtropical forests: Refinement of IPCC default rates using forest plot data. GLOBAL CHANGE BIOLOGY 2019; 25:3609-3624. [PMID: 31310673 PMCID: PMC6852081 DOI: 10.1111/gcb.14767] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2019] [Accepted: 06/06/2019] [Indexed: 05/17/2023]
Abstract
As countries advance in greenhouse gas (GHG) accounting for climate change mitigation, consistent estimates of aboveground net biomass change (∆AGB) are needed. Countries with limited forest monitoring capabilities in the tropics and subtropics rely on IPCC 2006 default ∆AGB rates, which are values per ecological zone, per continent. Similarly, research into forest biomass change at a large scale also makes use of these rates. IPCC 2006 default rates come from a handful of studies, provide no uncertainty indications and do not distinguish between older secondary forests and old-growth forests. As part of the 2019 Refinement to the 2006 IPCC Guidelines for National Greenhouse Gas Inventories, we incorporate ∆AGB data available from 2006 onwards, comprising 176 chronosequences in secondary forests and 536 permanent plots in old-growth and managed/logged forests located in 42 countries in Africa, North and South America and Asia. We generated ∆AGB rate estimates for younger secondary forests (≤20 years), older secondary forests (>20 years and up to 100 years) and old-growth forests, and accounted for uncertainties in our estimates. In tropical rainforests, for which data availability was the highest, our ∆AGB rate estimates ranged from 3.4 (Asia) to 7.6 (Africa) Mg ha-1 year-1 in younger secondary forests, from 2.3 (North and South America) to 3.5 (Africa) Mg ha-1 year-1 in older secondary forests, and 0.7 (Asia) to 1.3 (Africa) Mg ha-1 year-1 in old-growth forests. We provide a rigorous and traceable refinement of the IPCC 2006 default rates in tropical and subtropical ecological zones, and identify which areas require more research on ∆AGB. In this respect, this study should be considered as an important step towards quantifying the role of tropical and subtropical forests as carbon sinks with higher accuracy; our new rates can be used for large-scale GHG accounting by governmental bodies, nongovernmental organizations and in scientific research.
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Affiliation(s)
- Daniela Requena Suarez
- Laboratory of Geo‐Information Science and Remote SensingWageningen University and ResearchWageningenThe Netherlands
| | - Danaë M. A. Rozendaal
- Laboratory of Geo‐Information Science and Remote SensingWageningen University and ResearchWageningenThe Netherlands
- Plant Production Systems GroupWageningen University and ResearchWageningenThe Netherlands
- Centre for Crop Systems AnalysisWageningen University and ResearchWageningenThe Netherlands
| | - Veronique De Sy
- Laboratory of Geo‐Information Science and Remote SensingWageningen University and ResearchWageningenThe Netherlands
| | | | - Esteban Alvarez‐Dávila
- Escuela de Ciencias agrícolas, pecuarias y ambientalesUniversidad Nacional Abierta y a DistanciaBogotaColombia
- Fundación ConVidaMedellínColombia
| | - Kristina Anderson‐Teixeira
- Conservation Ecology CenterSmithsonian Conservation Biology InstituteFront RoyalVRUSA
- Center for Tropical Forest Science‐Forest Global Earth ObservatorySmithsonian Tropical Research InstitutePanamaRepublic of Panama
| | - Alejandro Araujo‐Murakami
- Museo de Historia Natural Noel Kempff MercadoUniversidad Autónoma Gabriel René MorenoSanta CruzBolivia
| | - Luzmila Arroyo
- Universidad Autónoma Gabriel René MorenoSanta CruzBolivia
| | | | - Frans Bongers
- Forest Ecology and Forest Management GroupWageningen University and ResearchWageningenThe Netherlands
| | | | - Sarah Carter
- Laboratory of Geo‐Information Science and Remote SensingWageningen University and ResearchWageningenThe Netherlands
| | | | - Ted R. Feldpausch
- GeographyCollege of Life and Environmental SciencesUniversity of ExeterExeterUK
| | | | | | - Bruno Hérault
- CIRAD, UR Forests & SocietiesUniversity of MontpellierMontpellierFrance
- Institut National Polytechnique Félix Houphouet‐BoignyYamoussoukroIvory Coast
| | | | | | - Simon L. Lewis
- School of GeographyUniversity of LeedsLeedsUK
- Department of GeographyUniversity College LondonLondonUK
| | - Beatriz S. Marimon
- Campus de Nova XavantinaUniversidade do Estado de Mato GrossoNova XavantinaBrazil
| | - Abel Monteagudo Mendoza
- Jardín Botánico de MissouriOxapampaPeru
- Universidad Nacional de San Antonio Abad del CuscoCuscoPeru
| | - Justin Kassi N'dja
- UFR BiosciencesLaboratoire de BotaniqueUniversité Félix Houphouet‐BoignyAbidjanIvory Coast
| | - Anny Estelle N'Guessan
- UFR BiosciencesLaboratoire de BotaniqueUniversité Félix Houphouet‐BoignyAbidjanIvory Coast
| | - Lourens Poorter
- Forest Ecology and Forest Management GroupWageningen University and ResearchWageningenThe Netherlands
| | - Lan Qie
- School of Life SciencesUniversity of LincolnLincolnUK
| | - Ervan Rutishauser
- Center for Tropical Forest Science‐Forest Global Earth ObservatorySmithsonian Tropical Research InstitutePanamaRepublic of Panama
| | - Plinio Sist
- CIRAD, UR Forests & SocietiesUniversity of MontpellierMontpellierFrance
| | - Bonaventure Sonké
- Plant Systematic and Ecology LaboratoryUniversity of YaoundéYaoundéCameroon
| | | | - Emilio Vilanova
- Universidad de Los AndesMéridaVenezuela
- School of Environmental and Forest SciencesUniversity of WashingtonSeattleWAUSA
| | - Maria M. H. Wang
- Department of Animal & Plant SciencesUniversity of SheffieldSheffieldUK
| | | | - Martin Herold
- Laboratory of Geo‐Information Science and Remote SensingWageningen University and ResearchWageningenThe Netherlands
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Adaptation of Plants to Salt Stress: Characterization of Na+ and K+ Transporters and Role of CBL Gene Family in Regulating Salt Stress Response. AGRONOMY-BASEL 2019. [DOI: 10.3390/agronomy9110687] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Salinity is one of the most serious factors limiting the productivity of agricultural crops, with adverse effects on germination, plant vigor, and crop yield. This salinity may be natural or induced by agricultural activities such as irrigation or the use of certain types of fertilizer. The most detrimental effect of salinity stress is the accumulation of Na+ and Cl− ions in tissues of plants exposed to soils with high NaCl concentrations. The entry of both Na+ and Cl− into the cells causes severe ion imbalance, and excess uptake might cause significant physiological disorder(s). High Na+ concentration inhibits the uptake of K+, which is an element for plant growth and development that results in lower productivity and may even lead to death. The genetic analyses revealed K+ and Na+ transport systems such as SOS1, which belong to the CBL gene family and play a key role in the transport of Na+ from the roots to the aerial parts in the Arabidopsis plant. In this review, we mainly discuss the roles of alkaline cations K+ and Na+, Ion homeostasis-transport determinants, and their regulation. Moreover, we tried to give a synthetic overview of soil salinity, its effects on plants, and tolerance mechanisms to withstand stress.
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31
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Schepaschenko D, Chave J, Phillips OL, Lewis SL, Davies SJ, Réjou-Méchain M, Sist P, Scipal K, Perger C, Herault B, Labrière N, Hofhansl F, Affum-Baffoe K, Aleinikov A, Alonso A, Amani C, Araujo-Murakami A, Armston J, Arroyo L, Ascarrunz N, Azevedo C, Baker T, Bałazy R, Bedeau C, Berry N, Bilous AM, Bilous SY, Bissiengou P, Blanc L, Bobkova KS, Braslavskaya T, Brienen R, Burslem DFRP, Condit R, Cuni-Sanchez A, Danilina D, Del Castillo Torres D, Derroire G, Descroix L, Sotta ED, d'Oliveira MVN, Dresel C, Erwin T, Evdokimenko MD, Falck J, Feldpausch TR, Foli EG, Foster R, Fritz S, Garcia-Abril AD, Gornov A, Gornova M, Gothard-Bassébé E, Gourlet-Fleury S, Guedes M, Hamer KC, Susanty FH, Higuchi N, Coronado ENH, Hubau W, Hubbell S, Ilstedt U, Ivanov VV, Kanashiro M, Karlsson A, Karminov VN, Killeen T, Koffi JCK, Konovalova M, Kraxner F, Krejza J, Krisnawati H, Krivobokov LV, Kuznetsov MA, Lakyda I, Lakyda PI, Licona JC, Lucas RM, Lukina N, Lussetti D, Malhi Y, Manzanera JA, Marimon B, Junior BHM, Martinez RV, Martynenko OV, Matsala M, Matyashuk RK, Mazzei L, Memiaghe H, Mendoza C, Mendoza AM, Moroziuk OV, Mukhortova L, Musa S, Nazimova DI, Okuda T, Oliveira LC, Ontikov PV, Osipov AF, Pietsch S, Playfair M, Poulsen J, Radchenko VG, Rodney K, Rozak AH, Ruschel A, Rutishauser E, See L, Shchepashchenko M, Shevchenko N, Shvidenko A, Silveira M, Singh J, Sonké B, Souza C, Stereńczak K, Stonozhenko L, Sullivan MJP, Szatniewska J, Taedoumg H, Ter Steege H, Tikhonova E, Toledo M, Trefilova OV, Valbuena R, Gamarra LV, Vasiliev S, Vedrova EF, Verhovets SV, Vidal E, Vladimirova NA, Vleminckx J, Vos VA, Vozmitel FK, Wanek W, West TAP, Woell H, Woods JT, Wortel V, Yamada T, Nur Hajar ZS, Zo-Bi IC. The Forest Observation System, building a global reference dataset for remote sensing of forest biomass. Sci Data 2019; 6:198. [PMID: 31601817 PMCID: PMC6787017 DOI: 10.1038/s41597-019-0196-1] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2019] [Accepted: 08/19/2019] [Indexed: 11/09/2022] Open
Abstract
Forest biomass is an essential indicator for monitoring the Earth's ecosystems and climate. It is a critical input to greenhouse gas accounting, estimation of carbon losses and forest degradation, assessment of renewable energy potential, and for developing climate change mitigation policies such as REDD+, among others. Wall-to-wall mapping of aboveground biomass (AGB) is now possible with satellite remote sensing (RS). However, RS methods require extant, up-to-date, reliable, representative and comparable in situ data for calibration and validation. Here, we present the Forest Observation System (FOS) initiative, an international cooperation to establish and maintain a global in situ forest biomass database. AGB and canopy height estimates with their associated uncertainties are derived at a 0.25 ha scale from field measurements made in permanent research plots across the world's forests. All plot estimates are geolocated and have a size that allows for direct comparison with many RS measurements. The FOS offers the potential to improve the accuracy of RS-based biomass products while developing new synergies between the RS and ground-based ecosystem research communities.
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Affiliation(s)
- Dmitry Schepaschenko
- Ecosystems Services and Management Program, International Institute for Applied Systems Analysis, Laxenburg, A-2361, Austria.
- Forestry faculty, Bauman Moscow State Technical University, Mytischi, 141005, Russia.
| | - Jérôme Chave
- Laboratoire Evolution et Diversité Biologique CNRS/Université Paul Sabatier, Toulouse, France
| | | | - Simon L Lewis
- School of Geography, University of Leeds, Leeds, LS2 9JT, UK
- University College London, 30 Guilford Street, London, WC1N 1EH, UK
| | - Stuart J Davies
- Forest Global Earth Observatory, Smithsonian Tropical Research Institute, P.O. Box 37012, Washington 20013, USA
| | | | - Plinio Sist
- CIRAD, Forêts et Sociétés, Campus International de Baillarguet, Montpellier, F-34398, France
- Forêts et Sociétés, Univ Montpellier, CIRAD, Montpellier, F-34398, France
| | - Klaus Scipal
- European Space Agency, ESTEC, Noordwijk, The Netherlands
| | - Christoph Perger
- Ecosystems Services and Management Program, International Institute for Applied Systems Analysis, Laxenburg, A-2361, Austria
- Spatial Focus GmbH, Vienna, Austria
| | - Bruno Herault
- CIRAD, Forêts et Sociétés, Campus International de Baillarguet, Montpellier, F-34398, France
- Forêts et Sociétés, Univ Montpellier, CIRAD, Montpellier, F-34398, France
- Department Foresterie et Environnement (DFR FOREN), Institut National Polytechnique Félix Houphouët-Boigny, INP-HB, Yamoussoukro, BP 2661, Côte d'Ivoire
| | - Nicolas Labrière
- Laboratoire Evolution et Diversité Biologique CNRS/Université Paul Sabatier, Toulouse, France
| | - Florian Hofhansl
- Ecosystems Services and Management Program, International Institute for Applied Systems Analysis, Laxenburg, A-2361, Austria
| | - Kofi Affum-Baffoe
- Mensuration Unit, Forestry Commission of Ghana, 4 Third Avenue Ridge, Kumasi, POB M434, Ghana
| | - Alexei Aleinikov
- Center of Forest Ecology and Productivity of the Russian Academy of Sciences, Profsoyuznaya 84/32/14, Moscow, 117997, Russia
| | - Alfonso Alonso
- Smithsonian Conservation Biology Institute, 1100 Jefferson Dr SW, Suite 3123, Washington, DC, 20560-0705, USA
| | - Christian Amani
- Centre for International Forestry Research, CIFOR, Jalan CIFOR, Situ Gede, Bogor, 16115, Indonesia
| | | | - John Armston
- Department of Geographical Sciences, University of Maryland, 2181 Lefrak Hall, College Park, MD, 20742, USA
- Joint Remote Sensing Research Program, School of Earth and Environmental Sciences, University of Queensland, Chamberlain Building (35), Campbell Road, St Lucia Campus, Brisbane, 4072, Australia
| | - Luzmila Arroyo
- Museo de Historia Natural Noel Kempff Mercado, Universidad Autónoma Gabriel Rene Moreno Av. Irala 565 - casilla, 2489, Santa Cruz, Bolivia
| | - Nataly Ascarrunz
- IBIF, Instituto Boliviano de Investigacion Forestal, Av. 6 de agosto # 28, Km 14 doble via La Guardia, Santa Cruz, Casilla, 6204, Bolivia
| | - Celso Azevedo
- Embrapa, Rodovia AM 10, km 29, Manaus, AM, 69010-970, Brazil
| | - Timothy Baker
- School of Geography, University of Leeds, Leeds, LS2 9JT, UK
| | - Radomir Bałazy
- Forest Research Institute, Department of Geomatics, Braci Leśnej 3, Sękocin Stary, Raszyn, 05-090, Poland
| | - Caroline Bedeau
- ONF, ONF-Réserve de Montabo Cayenne Cedex, Cayenne, BP 7002; 97307, French Guiana
| | - Nicholas Berry
- The Landscapes and Livelihoods Group, 20 Chambers St, Edinburgh, EH1 1JZ, UK
| | - Andrii M Bilous
- National University of Life and Environmental Sciences of Ukraine, General Rodimtsev 19, Kyiv, 3041, Ukraine
| | - Svitlana Yu Bilous
- National University of Life and Environmental Sciences of Ukraine, General Rodimtsev 19, Kyiv, 3041, Ukraine
| | | | - Lilian Blanc
- CIRAD, Forêts et Sociétés, Campus International de Baillarguet, Montpellier, F-34398, France
- Forêts et Sociétés, Univ Montpellier, CIRAD, Montpellier, F-34398, France
| | - Kapitolina S Bobkova
- Institute of Biology, Komi Scientific Center, Ural Branch of Russian Academy of Sciences, Kommunisticheskaya 28, Syktyvkar, 167982, Russia
| | - Tatyana Braslavskaya
- Center of Forest Ecology and Productivity of the Russian Academy of Sciences, Profsoyuznaya 84/32/14, Moscow, 117997, Russia
| | - Roel Brienen
- School of Geography, University of Leeds, Leeds, LS2 9JT, UK
| | - David F R P Burslem
- School of Biological Sciences, University of Aberdeen, Cruickshank Building, St Machar Drive, Aberdeen, AB24 3UU, UK
| | - Richard Condit
- Morton Arboretum, 4100 Illinois Rte. 53, Lisle, 60532, IL, USA
| | - Aida Cuni-Sanchez
- Department of Environment and Geography, University of York, Heslington, York, YO10 5NG, UK
| | - Dilshad Danilina
- V.N. Sukachev Institute of Forest, Siberian Branch of the Russian Academy of Science, Academgorodok 50(28), Krasnoyarsk, 660036, Russia
| | - Dennis Del Castillo Torres
- Instituto de Investigaciones de la Amazonía Peruana, Av. Abelardo Quiñones km 2.5, Iquitos, Apartado Postal 784, Peru
| | - Géraldine Derroire
- CIRAD, UMR EcoFoG, Campus Agronomique - BP 701, Kourou, 97387, France, French Guiana
| | - Laurent Descroix
- ONF, ONF-Réserve de Montabo Cayenne Cedex, Cayenne, BP 7002; 97307, French Guiana
| | - Eleneide Doff Sotta
- Embrapa, Rodovia Juscelino Kubitscheck, Km 5, no 2.600, Macapa, Caixa Postal 10, CEP: 68903-419, Brazil
| | | | - Christopher Dresel
- Ecosystems Services and Management Program, International Institute for Applied Systems Analysis, Laxenburg, A-2361, Austria
- Spatial Focus GmbH, Vienna, Austria
| | - Terry Erwin
- SI Entomology, Smithsonian Institution, PO Box 37012, MRC 187, Washington, DC, DC 20013-7012, USA
| | - Mikhail D Evdokimenko
- V.N. Sukachev Institute of Forest, Siberian Branch of the Russian Academy of Science, Academgorodok 50(28), Krasnoyarsk, 660036, Russia
| | - Jan Falck
- Department Forest Ecology and Management, The Swedish University of Agricultural Sciences, SLU, Umeå, SE-901 83, Sweden
| | - Ted R Feldpausch
- Geography, College of Life and Environmental Sciences, University of Exeter,Laver Building, North Park Road, Exeter, EX4 4QE, UK
| | - Ernest G Foli
- Forestry Research Institute of Ghana, UP Box 63, KNUST, Kumasi, Ghana
| | - Robin Foster
- The Field Musium, 1400S Lake Shore Dr, Chicago, IL, 60605, USA
| | - Steffen Fritz
- Ecosystems Services and Management Program, International Institute for Applied Systems Analysis, Laxenburg, A-2361, Austria
| | | | - Aleksey Gornov
- Center of Forest Ecology and Productivity of the Russian Academy of Sciences, Profsoyuznaya 84/32/14, Moscow, 117997, Russia
| | - Maria Gornova
- Center of Forest Ecology and Productivity of the Russian Academy of Sciences, Profsoyuznaya 84/32/14, Moscow, 117997, Russia
| | - Ernest Gothard-Bassébé
- Institut Centrafricain de Recherche Agronomique, ICRA, BP 122, Bangui, Central African Republic
| | - Sylvie Gourlet-Fleury
- CIRAD, Forêts et Sociétés, Campus International de Baillarguet, Montpellier, F-34398, France
- Forêts et Sociétés, Univ Montpellier, CIRAD, Montpellier, F-34398, France
| | - Marcelino Guedes
- Embrapa, Rodovia Juscelino Kubitscheck, Km 5, no 2.600, Macapa, Caixa Postal 10, CEP: 68903-419, Brazil
| | - Keith C Hamer
- School of Biology, University of Leeds, Leeds, LS2 9JT, UK
| | - Farida Herry Susanty
- FOERDIA, Forestry and Environment Research Development and Innovation Agency, Jalan Gunung Batu No 5, Bogor, 16610, Indonesia
| | - Niro Higuchi
- Instituto Nacional de Pesquisas da Amazônia - Coordenação de Pesquisas em Silvicultura Tropical, Manaus, 69060-001, Brazil
| | - Eurídice N Honorio Coronado
- Instituto de Investigaciones de la Amazonía Peruana, Av. Abelardo Quiñones km 2.5, Iquitos, Apartado Postal 784, Peru
| | - Wannes Hubau
- School of Geography, University of Leeds, Leeds, LS2 9JT, UK
- U Gent-Woodlab, Laboratory of Wood Technology, Department of Environment, Ghent University, Ghent, 9000, Belgium
| | - Stephen Hubbell
- Department of Ecology and Evolutionary Biology, University of California, 621 Charles E. Young Dr. South, Los Angeles, CA, 90095-1606, USA
| | - Ulrik Ilstedt
- Department Forest Ecology and Management, The Swedish University of Agricultural Sciences, SLU, Umeå, SE-901 83, Sweden
| | - Viktor V Ivanov
- V.N. Sukachev Institute of Forest, Siberian Branch of the Russian Academy of Science, Academgorodok 50(28), Krasnoyarsk, 660036, Russia
| | - Milton Kanashiro
- Embrapa Amazonia Oriental, Travessa Doutor Enéas Pinheiro, Belém, PA, 66095-903, Brazil
| | - Anders Karlsson
- Department Forest Ecology and Management, The Swedish University of Agricultural Sciences, SLU, Umeå, SE-901 83, Sweden
| | - Viktor N Karminov
- Center of Forest Ecology and Productivity of the Russian Academy of Sciences, Profsoyuznaya 84/32/14, Moscow, 117997, Russia
| | - Timothy Killeen
- World Wildlife Fund, Calle Diego de Mendoza 299, Santa Cruz de la Sierra, Bolivia
| | | | - Maria Konovalova
- V.N. Sukachev Institute of Forest, Siberian Branch of the Russian Academy of Science, Academgorodok 50(28), Krasnoyarsk, 660036, Russia
| | - Florian Kraxner
- Ecosystems Services and Management Program, International Institute for Applied Systems Analysis, Laxenburg, A-2361, Austria
| | - Jan Krejza
- Global Change Research Institute CAS, Bělidla 986/4a, Brno, 603 00, Czech Republic
| | - Haruni Krisnawati
- FOERDIA, Forestry and Environment Research Development and Innovation Agency, Jalan Gunung Batu No 5, Bogor, 16610, Indonesia
| | - Leonid V Krivobokov
- V.N. Sukachev Institute of Forest, Siberian Branch of the Russian Academy of Science, Academgorodok 50(28), Krasnoyarsk, 660036, Russia
| | - Mikhail A Kuznetsov
- Institute of Biology, Komi Scientific Center, Ural Branch of Russian Academy of Sciences, Kommunisticheskaya 28, Syktyvkar, 167982, Russia
| | - Ivan Lakyda
- National University of Life and Environmental Sciences of Ukraine, General Rodimtsev 19, Kyiv, 3041, Ukraine
| | - Petro I Lakyda
- National University of Life and Environmental Sciences of Ukraine, General Rodimtsev 19, Kyiv, 3041, Ukraine
| | - Juan Carlos Licona
- IBIF, Instituto Boliviano de Investigacion Forestal, Av. 6 de agosto # 28, Km 14 doble via La Guardia, Santa Cruz, Casilla, 6204, Bolivia
| | - Richard M Lucas
- Department of Geography and Earth Sciences, Aberystwyth University, Aberystwyth, SY23 3DB, UK
| | - Natalia Lukina
- Center of Forest Ecology and Productivity of the Russian Academy of Sciences, Profsoyuznaya 84/32/14, Moscow, 117997, Russia
| | - Daniel Lussetti
- Department Forest Ecology and Management, The Swedish University of Agricultural Sciences, SLU, Umeå, SE-901 83, Sweden
| | - Yadvinder Malhi
- School of Geography and the Environment, University of Oxford, Oxford, OX1 3QY, UK
| | | | - Beatriz Marimon
- Laboratório de Ecologia Vegetal, Universidade do Estado de Mato Grosso, UNEMAT, Campus de Nova Xavantina, Nova Xavantina, Mato Grosso, 78.690-000, Brazil
| | - Ben Hur Marimon Junior
- Laboratório de Ecologia Vegetal, Universidade do Estado de Mato Grosso, UNEMAT, Campus de Nova Xavantina, Nova Xavantina, Mato Grosso, 78.690-000, Brazil
| | | | - Olga V Martynenko
- Russian Institute of Continuous Education in Forestry, Institutskaya 17, Pushkino, 141200, Russia
| | - Maksym Matsala
- National University of Life and Environmental Sciences of Ukraine, General Rodimtsev 19, Kyiv, 3041, Ukraine
| | - Raisa K Matyashuk
- Institute for Evolutionary Ecology of the National Academy of Sciences of Ukraine, Lebedev 37, Kyiv, 03143, Ukraine
| | - Lucas Mazzei
- Embrapa Amazonia Oriental, Travessa Doutor Enéas Pinheiro, Belém, PA, 66095-903, Brazil
| | - Hervé Memiaghe
- University of Oregon, 1585 E 13th Ave, Eugene, OR, 97403, USA
| | | | - Abel Monteagudo Mendoza
- Jardín Botánico de Missouri; Universidad Nacional de San Antonio Abad del Cusco, Oxapampa, Peru
| | - Olga V Moroziuk
- National University of Life and Environmental Sciences of Ukraine, General Rodimtsev 19, Kyiv, 3041, Ukraine
| | - Liudmila Mukhortova
- V.N. Sukachev Institute of Forest, Siberian Branch of the Russian Academy of Science, Academgorodok 50(28), Krasnoyarsk, 660036, Russia
| | - Samsudin Musa
- FRIM Forest Reserach Institute of Malaysia, 52109 Kepong, Selangor, Kuala Lumpur, Malaysia
| | - Dina I Nazimova
- V.N. Sukachev Institute of Forest, Siberian Branch of the Russian Academy of Science, Academgorodok 50(28), Krasnoyarsk, 660036, Russia
| | - Toshinori Okuda
- Hiroshima University, 1-7-1 Kagamiyama, Higashi-Hiroshima, Hiroshima, 739-8521, Japan
| | | | - Petr V Ontikov
- Forestry faculty, Bauman Moscow State Technical University, Mytischi, 141005, Russia
| | - Andrey F Osipov
- Institute of Biology, Komi Scientific Center, Ural Branch of Russian Academy of Sciences, Kommunisticheskaya 28, Syktyvkar, 167982, Russia
| | - Stephan Pietsch
- Ecosystems Services and Management Program, International Institute for Applied Systems Analysis, Laxenburg, A-2361, Austria
| | - Maureen Playfair
- Center for Agricultural research in Suriname, CELOS, 1914, Paramaribo, Suriname
| | - John Poulsen
- Nicholas School of the Environment, Duke University, P.O. Box 90328, Durham, NC, 27708, USA
| | - Vladimir G Radchenko
- Institute for Evolutionary Ecology of the National Academy of Sciences of Ukraine, Lebedev 37, Kyiv, 03143, Ukraine
| | - Kenneth Rodney
- IIC, The Iwokrama International Centre for Rain Forest Conservation and Development, 77 High Street, Georgetown, Guyana
| | - Andes H Rozak
- Cibodas Botanic Gardens - Indonesian Institute of Sciences (LIPI), Jl. Kebun Raya Cibodas, Cipanas, Cianjur, 43253, Indonesia
| | - Ademir Ruschel
- Embrapa Amazonia Oriental, Travessa Doutor Enéas Pinheiro, Belém, PA, 66095-903, Brazil
| | - Ervan Rutishauser
- Smithsonian Tropical Research Institute, Balboa, Ancon, Panama 3092, Panama
| | - Linda See
- Ecosystems Services and Management Program, International Institute for Applied Systems Analysis, Laxenburg, A-2361, Austria
| | - Maria Shchepashchenko
- Russian Institute of Continuous Education in Forestry, Institutskaya 17, Pushkino, 141200, Russia
| | - Nikolay Shevchenko
- Center of Forest Ecology and Productivity of the Russian Academy of Sciences, Profsoyuznaya 84/32/14, Moscow, 117997, Russia
| | - Anatoly Shvidenko
- Ecosystems Services and Management Program, International Institute for Applied Systems Analysis, Laxenburg, A-2361, Austria
- V.N. Sukachev Institute of Forest, Siberian Branch of the Russian Academy of Science, Academgorodok 50(28), Krasnoyarsk, 660036, Russia
| | - Marcos Silveira
- Museu Universitário, Universidade Federal do Acre, BR 364, Km 04 - Distrito Industrial, Rio Branco, 69915-559, Brazil
| | - James Singh
- Guyana Forestry Commission, 1 Water Street, Kingston Georgetown, Guyana
| | - Bonaventure Sonké
- Plant Systematic and Ecology Laboratory, University of Yaoundé I, P.O. Box 047, Yaounde, Cameroon
| | - Cintia Souza
- Embrapa, Rodovia AM 10, km 29, Manaus, AM, 69010-970, Brazil
| | - Krzysztof Stereńczak
- Forest Research Institute, Department of Geomatics, Braci Leśnej 3, Sękocin Stary, Raszyn, 05-090, Poland
| | - Leonid Stonozhenko
- Russian Institute of Continuous Education in Forestry, Institutskaya 17, Pushkino, 141200, Russia
| | | | - Justyna Szatniewska
- Global Change Research Institute CAS, Bělidla 986/4a, Brno, 603 00, Czech Republic
| | - Hermann Taedoumg
- Plant Systematic and Ecology Laboratory, University of Yaoundé I, P.O. Box 047, Yaounde, Cameroon
- Bioversity international, P.O. Box 2008, Messa, Yaoundé, Cameroun
| | | | - Elena Tikhonova
- Center of Forest Ecology and Productivity of the Russian Academy of Sciences, Profsoyuznaya 84/32/14, Moscow, 117997, Russia
| | - Marisol Toledo
- Museo de Historia Natural Noel Kempff Mercado, Universidad Autónoma Gabriel Rene Moreno Av. Irala 565 - casilla, 2489, Santa Cruz, Bolivia
| | - Olga V Trefilova
- V.N. Sukachev Institute of Forest, Siberian Branch of the Russian Academy of Science, Academgorodok 50(28), Krasnoyarsk, 660036, Russia
| | - Ruben Valbuena
- School of Natural Sciences, Bangor University, Thoday Building. Deiniol Rd, Bangor, LL57 2UW, United Kingdom
| | - Luis Valenzuela Gamarra
- Jardín Botánico de Missouri; Universidad Nacional de San Antonio Abad del Cusco, Oxapampa, Peru
| | - Sergey Vasiliev
- Forestry faculty, Bauman Moscow State Technical University, Mytischi, 141005, Russia
| | - Estella F Vedrova
- V.N. Sukachev Institute of Forest, Siberian Branch of the Russian Academy of Science, Academgorodok 50(28), Krasnoyarsk, 660036, Russia
| | - Sergey V Verhovets
- Siberian Federal University, Svobodnyy Ave, 79, Krasnoyarsk, 660041, Russia
- Reshetnev Siberian state university of science and technology, pr. Mira 82, Krasnoyarsk, 660049, Russia
| | - Edson Vidal
- Department of Forest Sciences, Luiz de Queiroz College of Agriculture, University of Sao Paolo, PO Box 9, Av. Pádua Dias, 11, Piracicaba, São Paulo, 13418-900, Brazil
| | - Nadezhda A Vladimirova
- State Nature Reserve Denezhkin Kamen, Lenina, 6, Sverdlovsk reg, Severouralsk, 624480, Russia
| | - Jason Vleminckx
- International Center for Tropical Botany, Department of Biological Sciences, Florida International University, 11200 S.W. 8th Street, Miami, 33199, FL, USA
| | | | - Foma K Vozmitel
- Forestry faculty, Bauman Moscow State Technical University, Mytischi, 141005, Russia
| | - Wolfgang Wanek
- Department of Microbiology and Ecosystem Science, Division of Terrestrial Ecosystem research, University of Vienna, Althanstrasse 14, Vienna, A-1090, Austria
| | - Thales A P West
- New Zealand Forest Research Institute (Scion) Te Papa Tipu Innovation Park, 49 Sala Street, Rotorua, 3046, New Zealand
| | - Hannsjorg Woell
- Unaffiliated (retired), Sommersbergseestrasse 291, Bad Aussee, 8990, Austria
| | - John T Woods
- W.R.T College of Agriculture and Forestry, University of Liberia, Capitol Hill, Monrovia, 9020, Liberia
| | - Verginia Wortel
- Center for Agricultural research in Suriname, CELOS, 1914, Paramaribo, Suriname
| | - Toshihiro Yamada
- Hiroshima University, 1-7-1 Kagamiyama, Higashi-Hiroshima, Hiroshima, 739-8521, Japan
| | - Zamah Shari Nur Hajar
- FRIM Forest Research Institute of Malaysia, 52109 Kepong, Selangor, Kuala Lumpur, Malaysia
| | - Irié Casimir Zo-Bi
- Department Foresterie et Environnement (DFR FOREN), Institut National Polytechnique Félix Houphouët-Boigny, INP-HB, Yamoussoukro, BP 2661, Côte d'Ivoire
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Maxwell SL, Evans T, Watson JEM, Morel A, Grantham H, Duncan A, Harris N, Potapov P, Runting RK, Venter O, Wang S, Malhi Y. Degradation and forgone removals increase the carbon impact of intact forest loss by 626. SCIENCE ADVANCES 2019; 5:eaax2546. [PMID: 31692892 PMCID: PMC6821461 DOI: 10.1126/sciadv.aax2546] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2019] [Accepted: 09/16/2019] [Indexed: 05/05/2023]
Abstract
Intact tropical forests, free from substantial anthropogenic influence, store and sequester large amounts of atmospheric carbon but are currently neglected in international climate policy. We show that between 2000 and 2013, direct clearance of intact tropical forest areas accounted for 3.2% of gross carbon emissions from all deforestation across the pantropics. However, full carbon accounting requires the consideration of forgone carbon sequestration, selective logging, edge effects, and defaunation. When these factors were considered, the net carbon impact resulting from intact tropical forest loss between 2000 and 2013 increased by a factor of 6 (626%), from 0.34 (0.37 to 0.21) to 2.12 (2.85 to 1.00) petagrams of carbon (equivalent to approximately 2 years of global land use change emissions). The climate mitigation value of conserving the 549 million ha of tropical forest that remains intact is therefore significant but will soon dwindle if their rate of loss continues to accelerate.
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Affiliation(s)
- Sean L. Maxwell
- Centre for Biodiversity and Conservation Science, School of Earth and Environmental Sciences, University of Queensland, St. Lucia, QLD 4072, Australia
- Wildlife Conservation Society, Global Conservation Program, Bronx, NY 10460, USA
- Corresponding author.
| | - Tom Evans
- Wildlife Conservation Society, Global Conservation Program, Bronx, NY 10460, USA
| | - James E. M. Watson
- Centre for Biodiversity and Conservation Science, School of Earth and Environmental Sciences, University of Queensland, St. Lucia, QLD 4072, Australia
- Wildlife Conservation Society, Global Conservation Program, Bronx, NY 10460, USA
| | - Alexandra Morel
- Environmental Change Institute, School of Geography and the Environment, University of Oxford, Oxford OX1 3QY, UK
- Zoological Society of London, Regent Park, London NW1 4RY, UK
| | - Hedley Grantham
- Wildlife Conservation Society, Global Conservation Program, Bronx, NY 10460, USA
| | - Adam Duncan
- Wildlife Conservation Society, Global Conservation Program, Bronx, NY 10460, USA
| | - Nancy Harris
- World Resources Institute, 10 G Street NE Suite 800, Washington, DC 20002, USA
| | - Peter Potapov
- Department of Geographical Sciences, University of Maryland, College Park, MD 20742, USA
| | - Rebecca K. Runting
- School of Geography, University of Melbourne, Parkville, VIC 3010, Australia
| | - Oscar Venter
- Ecosystem Science and Management, University of Northern British Columbia, Prince George, Canada
| | - Stephanie Wang
- Wildlife Conservation Society, Global Conservation Program, Bronx, NY 10460, USA
| | - Yadvinder Malhi
- Environmental Change Institute, School of Geography and the Environment, University of Oxford, Oxford OX1 3QY, UK
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Phillips OL, Sullivan MJP, Baker TR, Monteagudo Mendoza A, Vargas PN, Vásquez R. Species Matter: Wood Density Influences Tropical Forest Biomass at Multiple Scales. SURVEYS IN GEOPHYSICS 2019; 40:913-935. [PMID: 31395992 PMCID: PMC6647473 DOI: 10.1007/s10712-019-09540-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2018] [Accepted: 05/06/2019] [Indexed: 05/17/2023]
Abstract
The mass of carbon contained in trees is governed by the volume and density of their wood. This represents a challenge to most remote sensing technologies, which typically detect surface structure and parameters related to wood volume but not to its density. Since wood density is largely determined by taxonomic identity this challenge is greatest in tropical forests where there are tens of thousands of tree species. Here, using pan-tropical literature and new analyses in Amazonia with plots with reliable identifications we assess the impact that species-related variation in wood density has on biomass estimates of mature tropical forests. We find impacts of species on forest biomass due to wood density at all scales from the individual tree up to the whole biome: variation in tree species composition regulates how much carbon forests can store. Even local differences in composition can cause variation in forest biomass and carbon density of 20% between subtly different local forest types, while additional large-scale floristic variation leads to variation in mean wood density of 10-30% across Amazonia and the tropics. Further, because species composition varies at all scales and even vertically within a stand, our analysis shows that bias and uncertainty always result if individual identity is ignored. Since sufficient inventory-based evidence based on botanical identification now exists to show that species composition matters biome-wide for biomass, we here assemble and provide mean basal-area-weighted wood density values for different forests across the lowand tropical biome. These range widely, from 0.467 to 0.728 g cm-3 with a pan-tropical mean of 0.619 g cm-3. Our analysis shows that mapping tropical ecosystem carbon always benefits from locally validated measurement of tree-by-tree botanical identity combined with tree-by-tree measurement of dimensions. Therefore whenever possible, efforts to map and monitor tropical forest carbon using remote sensing techniques should be combined with tree-level measurement of species identity by botanists working in inventory plots.
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Affiliation(s)
| | | | - Tim R. Baker
- School of Geography, University of Leeds, Leeds, LS2 9JT UK
| | | | - Percy Núñez Vargas
- Universidad de San Antonio Abad del Cusco, Av. de La Cultura 773, 08000 Cuzco, Peru
| | - Rodolfo Vásquez
- Jardín Botánico de Missouri, Jr. Bolognesi, 19230 Oxapampa, Peru
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34
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Brodrick PG, Davies AB, Asner GP. Uncovering Ecological Patterns with Convolutional Neural Networks. Trends Ecol Evol 2019; 34:734-745. [PMID: 31078331 DOI: 10.1016/j.tree.2019.03.006] [Citation(s) in RCA: 74] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2018] [Revised: 03/20/2019] [Accepted: 03/22/2019] [Indexed: 11/25/2022]
Abstract
Using remotely sensed imagery to identify biophysical components across landscapes is an important avenue of investigation for ecologists studying ecosystem dynamics. With high-resolution remotely sensed imagery, algorithmic utilization of image context is crucial for accurate identification of biophysical components at large scales. In recent years, convolutional neural networks (CNNs) have become ubiquitous in image processing, and are rapidly becoming more common in ecology. Because the quantity of high-resolution remotely sensed imagery continues to rise, CNNs are increasingly essential tools for large-scale ecosystem analysis. We discuss here the conceptual advantages of CNNs, demonstrate how they can be used by ecologists through distinct examples of their application, and provide a walkthrough of how to use them for ecological applications.
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Affiliation(s)
- Philip G Brodrick
- Center for Global Discovery and Conservation Science, Arizona State University, Tempe, AZ 85281, USA; Department of Global Ecology, Carnegie Institution for Science, 260 Panama Street, Stanford, CA 94305, USA.
| | - Andrew B Davies
- Center for Global Discovery and Conservation Science, Arizona State University, Tempe, AZ 85281, USA; Department of Global Ecology, Carnegie Institution for Science, 260 Panama Street, Stanford, CA 94305, USA; Present address: Department of Organismic and Evolutionary Biology, Harvard University, 22 Divinity Ave, Cambridge, MA 02138, USA. https://twitter.com/andrewbdavies
| | - Gregory P Asner
- Center for Global Discovery and Conservation Science, Arizona State University, Tempe, AZ 85281, USA; Department of Global Ecology, Carnegie Institution for Science, 260 Panama Street, Stanford, CA 94305, USA. https://twitter.com/greg_asner
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35
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Natural disturbance and soils drive diversity and dynamics of seasonal dipterocarp forest in Southern Thailand. JOURNAL OF TROPICAL ECOLOGY 2019. [DOI: 10.1017/s0266467419000075] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
AbstractIn 2000, we established a 24-ha plot in Peninsular Thailand to investigate how forest composition, structure and dynamics vary with spatial heterogeneity in resource availability. Detailed soil and topographic surveys were used to describe four edaphic habitats in the plot. Disturbance history was inferred from historical records and floristic analysis. The plot included >119 000 trees ≥1 cm dbh in 578 species, and was recensused in 2010. Species distributions, floristic turnover, stand structure, demographic rates and biomass dynamics were strongly influenced by heterogeneity in soils, topography and disturbance history. Over 75% of species were aggregated on specific edaphic habitats leading to strong compositional turnover across the plot. Soil chemistry more strongly affected species turnover than topography. Forest with high biomass and slow dynamics occurred on well-drained, low fertility ridges. The distribution and size structure of pioneer species reflected habitat-specific differences in disturbance history. Overall, above-ground biomass (AGB) increased by 0.64 Mg ha−1 y−1, from 385 to 392 Mg ha−1, an increase that was entirely attributable to recovery after natural disturbance. Forest composition and stand structure, by reflecting local disturbance history, provide insights into the likely drivers of AGB change in forests. Predicting future changes in tropical forests requires improved understanding of how soils and disturbance regulate forest dynamics.
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36
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Estoque RC, Ooba M, Avitabile V, Hijioka Y, DasGupta R, Togawa T, Murayama Y. The future of Southeast Asia's forests. Nat Commun 2019; 10:1829. [PMID: 31015425 PMCID: PMC6478739 DOI: 10.1038/s41467-019-09646-4] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2018] [Accepted: 03/21/2019] [Indexed: 01/29/2023] Open
Abstract
While Southeast Asia's forests play important roles in biodiversity conservation and global carbon (C) balance, the region is also a deforestation hotspot. Here, we consider the five shared socioeconomic pathways (SSPs) to portray a range of plausible futures for the region's forests, employing a state-of-the-art land change modelling procedure and remotely sensed data. We find that by 2050 under the worst-case scenario, SSP 3 (regional rivalry/a rocky road), the region's forests would shrink by 5.2 million ha. The region's aboveground forest carbon stock (AFCS) would decrease by 790 Tg C, 21% of which would be due to old-growth forest loss. Conversely, under the best-case scenario, SSP 1 (sustainability/taking the green road), the region is projected to gain 19.6 million ha of forests and 1651 Tg C of AFCS. The choice of the pathway is thus critical for the future of the region's forests and their ecosystem functions and services.
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Affiliation(s)
| | - Makoto Ooba
- National Institute for Environmental Studies, Tsukuba, Japan
| | | | - Yasuaki Hijioka
- National Institute for Environmental Studies, Tsukuba, Japan
| | | | - Takuya Togawa
- National Institute for Environmental Studies, Tsukuba, Japan
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37
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Raffelsbauer V, Spannl S, Peña K, Pucha-Cofrep D, Steppe K, Bräuning A. Tree Circumference Changes and Species-Specific Growth Recovery After Extreme Dry Events in a Montane Rainforest in Southern Ecuador. FRONTIERS IN PLANT SCIENCE 2019; 10:342. [PMID: 30967890 PMCID: PMC6439692 DOI: 10.3389/fpls.2019.00342] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/08/2018] [Accepted: 03/05/2019] [Indexed: 06/09/2023]
Abstract
Under drought conditions, even tropical rainforests might turn from carbon sinks to sources, and tree species composition might be altered by increased mortality. We monitored stem diameter variations of 40 tree individuals with stem diameters above 10 cm belonging to eleven different tree genera and three tree life forms with high-resolution dendrometers from July 2007 to November 2010 and additionally March 2015 to December 2017 in a tropical mountain rainforest in South Ecuador, a biodiversity hotspot with more than 300 different tree species belonging to different functional types. Although our study area receives around 2200 mm of annual rainfall, dry spells occur regularly during so-called "Veranillo del Niño" (VdN) periods in October-November. In climate change scenarios, droughts are expected with higher frequency and intensity as today. We selected dry intervals with a minimum of four consecutive days to examine how different tree species respond to drought stress, raising the question if some species are better adapted to a possible higher frequency and increasing duration of dry periods. We analyzed the averaged species-specific stem shrinkage rates and recovery times during and after dry periods. The two deciduous broadleaved species Cedrela montana and Handroanthus chrysanthus showed the biggest stem shrinkage of up to 2 mm after 10 consecutive dry days. A comparison of daily circumference changes over 600 consecutive days revealed different drought responses between the families concerning the percentage of days with stem shrinkage/increment, ranging from 27.5 to 72.5% for Graffenrieda emarginata to 45-55% for Podocarpus oleifolius under same climate conditions. Moreover, we found great difference of recovery times after longer-lasting (i.e., eight to ten days) VdN drought events between the two evergreen broadleaved species Vismia cavanillesiana and Tapirira guianensis. While Vismia replenished to pre-VdN stem circumference after only 5 days, Tapirira needed 52 days on average to restore its circumference. Hence, a higher frequency of droughts might increase inter-species competition and species-specific mortality and might finally alter the species composition of the ecosystem.
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Affiliation(s)
- Volker Raffelsbauer
- Institute of Geography, Friedrich Alexander University Erlangen-Nürnberg, Nuremberg, Germany
| | - Susanne Spannl
- Department of Plant Physiology, University of Bayreuth, Bayreuth, Germany
| | - Kelly Peña
- Laboratorio de Dendrocronología y Anatomía de la Madera, Carrera de Ingeniería Forestal, Universidad Nacional de Loja, Loja, Ecuador
| | - Darwin Pucha-Cofrep
- Laboratorio de Dendrocronología y Anatomía de la Madera, Carrera de Ingeniería Forestal, Universidad Nacional de Loja, Loja, Ecuador
| | - Kathy Steppe
- Laboratory of Plant Ecology, Department of Plants and Crops, Faculty of Bioscience Engineering, Ghent University, Ghent, Belgium
| | - Achim Bräuning
- Institute of Geography, Friedrich Alexander University Erlangen-Nürnberg, Nuremberg, Germany
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38
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Esquivel‐Muelbert A, Baker TR, Dexter KG, Lewis SL, Brienen RJW, Feldpausch TR, Lloyd J, Monteagudo‐Mendoza A, Arroyo L, Álvarez-Dávila E, Higuchi N, Marimon BS, Marimon-Junior BH, Silveira M, Vilanova E, Gloor E, Malhi Y, Chave J, Barlow J, Bonal D, Davila Cardozo N, Erwin T, Fauset S, Hérault B, Laurance S, Poorter L, Qie L, Stahl C, Sullivan MJP, ter Steege H, Vos VA, Zuidema PA, Almeida E, Almeida de Oliveira E, Andrade A, Vieira SA, Aragão L, Araujo‐Murakami A, Arets E, Aymard C GA, Baraloto C, Camargo PB, Barroso JG, Bongers F, Boot R, Camargo JL, Castro W, Chama Moscoso V, Comiskey J, Cornejo Valverde F, Lola da Costa AC, del Aguila Pasquel J, Di Fiore A, Fernanda Duque L, Elias F, Engel J, Flores Llampazo G, Galbraith D, Herrera Fernández R, Honorio Coronado E, Hubau W, Jimenez‐Rojas E, Lima AJN, Umetsu RK, Laurance W, Lopez‐Gonzalez G, Lovejoy T, Aurelio Melo Cruz O, Morandi PS, Neill D, Núñez Vargas P, Pallqui Camacho NC, Parada Gutierrez A, Pardo G, Peacock J, Peña‐Claros M, Peñuela‐Mora MC, Petronelli P, Pickavance GC, Pitman N, Prieto A, Quesada C, Ramírez‐Angulo H, Réjou‐Méchain M, Restrepo Correa Z, Roopsind A, Rudas A, Salomão R, Silva N, Silva Espejo J, Singh J, Stropp J, Terborgh J, Thomas R, Toledo M, Torres‐Lezama A, Valenzuela Gamarra L, van de Meer PJ, van der Heijden G, van der Hout P, Vasquez Martinez R, Vela C, Vieira ICG, Phillips OL. Compositional response of Amazon forests to climate change. GLOBAL CHANGE BIOLOGY 2019; 25:39-56. [PMID: 30406962 PMCID: PMC6334637 DOI: 10.1111/gcb.14413] [Citation(s) in RCA: 123] [Impact Index Per Article: 24.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2018] [Revised: 06/27/2018] [Accepted: 07/04/2018] [Indexed: 05/05/2023]
Abstract
Most of the planet's diversity is concentrated in the tropics, which includes many regions undergoing rapid climate change. Yet, while climate-induced biodiversity changes are widely documented elsewhere, few studies have addressed this issue for lowland tropical ecosystems. Here we investigate whether the floristic and functional composition of intact lowland Amazonian forests have been changing by evaluating records from 106 long-term inventory plots spanning 30 years. We analyse three traits that have been hypothesized to respond to different environmental drivers (increase in moisture stress and atmospheric CO2 concentrations): maximum tree size, biogeographic water-deficit affiliation and wood density. Tree communities have become increasingly dominated by large-statured taxa, but to date there has been no detectable change in mean wood density or water deficit affiliation at the community level, despite most forest plots having experienced an intensification of the dry season. However, among newly recruited trees, dry-affiliated genera have become more abundant, while the mortality of wet-affiliated genera has increased in those plots where the dry season has intensified most. Thus, a slow shift to a more dry-affiliated Amazonia is underway, with changes in compositional dynamics (recruits and mortality) consistent with climate-change drivers, but yet to significantly impact whole-community composition. The Amazon observational record suggests that the increase in atmospheric CO2 is driving a shift within tree communities to large-statured species and that climate changes to date will impact forest composition, but long generation times of tropical trees mean that biodiversity change is lagging behind climate change.
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39
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Rifai SW, Girardin CAJ, Berenguer E, Del Aguila-Pasquel J, Dahlsjö CAL, Doughty CE, Jeffery KJ, Moore S, Oliveras I, Riutta T, Rowland LM, Murakami AA, Addo-Danso SD, Brando P, Burton C, Ondo FE, Duah-Gyamfi A, Amézquita FF, Freitag R, Pacha FH, Huasco WH, Ibrahim F, Mbou AT, Mihindou VM, Peixoto KS, Rocha W, Rossi LC, Seixas M, Silva-Espejo JE, Abernethy KA, Adu-Bredu S, Barlow J, da Costa ACL, Marimon BS, Marimon-Junior BH, Meir P, Metcalfe DB, Phillips OL, White LJT, Malhi Y. ENSO Drives interannual variation of forest woody growth across the tropics. Philos Trans R Soc Lond B Biol Sci 2018; 373:rstb.2017.0410. [PMID: 30297475 DOI: 10.1098/rstb.2017.0410] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/03/2018] [Indexed: 01/05/2023] Open
Abstract
Meteorological extreme events such as El Niño events are expected to affect tropical forest net primary production (NPP) and woody growth, but there has been no large-scale empirical validation of this expectation. We collected a large high-temporal resolution dataset (for 1-13 years depending upon location) of more than 172 000 stem growth measurements using dendrometer bands from across 14 regions spanning Amazonia, Africa and Borneo in order to test how much month-to-month variation in stand-level woody growth of adult tree stems (NPPstem) can be explained by seasonal variation and interannual meteorological anomalies. A key finding is that woody growth responds differently to meteorological variation between tropical forests with a dry season (where monthly rainfall is less than 100 mm), and aseasonal wet forests lacking a consistent dry season. In seasonal tropical forests, a high degree of variation in woody growth can be predicted from seasonal variation in temperature, vapour pressure deficit, in addition to anomalies of soil water deficit and shortwave radiation. The variation of aseasonal wet forest woody growth is best predicted by the anomalies of vapour pressure deficit, water deficit and shortwave radiation. In total, we predict the total live woody production of the global tropical forest biome to be 2.16 Pg C yr-1, with an interannual range 1.96-2.26 Pg C yr-1 between 1996-2016, and with the sharpest declines during the strong El Niño events of 1997/8 and 2015/6. There is high geographical variation in hotspots of El Niño-associated impacts, with weak impacts in Africa, and strongly negative impacts in parts of Southeast Asia and extensive regions across central and eastern Amazonia. Overall, there is high correlation (r = -0.75) between the annual anomaly of tropical forest woody growth and the annual mean of the El Niño 3.4 index, driven mainly by strong correlations with anomalies of soil water deficit, vapour pressure deficit and shortwave radiation.This article is part of the discussion meeting issue 'The impact of the 2015/2016 El Niño on the terrestrial tropical carbon cycle: patterns, mechanisms and implications'.
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Affiliation(s)
- Sami W Rifai
- Environmental Change Institute, School of Geography and the Environment, University of Oxford, South Parks Road, Oxford OX1 3QY, UK
| | - Cécile A J Girardin
- Environmental Change Institute, School of Geography and the Environment, University of Oxford, South Parks Road, Oxford OX1 3QY, UK
| | - Erika Berenguer
- Environmental Change Institute, School of Geography and the Environment, University of Oxford, South Parks Road, Oxford OX1 3QY, UK.,Lancaster Environment Centre, Lancaster University, Lancaster LA1 4YQ, UK
| | | | - Cecilia A L Dahlsjö
- Environmental Change Institute, School of Geography and the Environment, University of Oxford, South Parks Road, Oxford OX1 3QY, UK
| | - Christopher E Doughty
- School of Informatics, Computing and Cyber systems, Northern Arizona University, Flagstaff, AZ 86011, USA
| | - Kathryn J Jeffery
- Faculty of Natural Sciences, University of Stirling, Stirling FK9 4LA, UK.,Institut de Recherche en Écologie Tropicale, CENAREST, BP 842, Libreville, Gabon.,Agence Nationale des Parcs Nationaux (ANPN), BP 20379, Libreville, Gabon
| | - Sam Moore
- Environmental Change Institute, School of Geography and the Environment, University of Oxford, South Parks Road, Oxford OX1 3QY, UK
| | - Imma Oliveras
- Environmental Change Institute, School of Geography and the Environment, University of Oxford, South Parks Road, Oxford OX1 3QY, UK
| | - Terhi Riutta
- Environmental Change Institute, School of Geography and the Environment, University of Oxford, South Parks Road, Oxford OX1 3QY, UK
| | - Lucy M Rowland
- Geography, College of Life and Environmental Sciences, University of Exeter, Amory Building, Exeter EX4 4RJ, UK
| | - Alejandro Araujo Murakami
- Museo de Historia Natural Noel Kempff Mercado Universidad Autónoma Gabriel Rene Moreno, Avenida Irala 565 Casilla Postal 2489, Santa Cruz, Bolivia
| | | | - Paulo Brando
- Woods Hole Research Center, Falmouth, MA, USA.,Amazon Environmental Research Institute (IPAM), Canarana, Mato Grosso, Brazil
| | - Chad Burton
- Environmental Change Institute, School of Geography and the Environment, University of Oxford, South Parks Road, Oxford OX1 3QY, UK
| | - Fidèle Evouna Ondo
- Agence Nationale des Parcs Nationaux (ANPN), BP 20379, Libreville, Gabon
| | | | | | - Renata Freitag
- Programa de Pós-graduação em Ecologia e Conservação, Universidade do Estado de Mato Grosso, CEP 78690-000, Nova Xavantina, MT, Brazil
| | | | - Walter Huaraca Huasco
- Environmental Change Institute, School of Geography and the Environment, University of Oxford, South Parks Road, Oxford OX1 3QY, UK
| | | | - Armel T Mbou
- Centro Euro-Mediterraneo sui Cambiamente Climatici, Leece, Italy
| | - Vianet Mihindou Mihindou
- Agence Nationale des Parcs Nationaux (ANPN), BP 20379, Libreville, Gabon.,Ministère de la Forêt et de l'Environnement, BP199, Libreville, Gabon
| | - Karine S Peixoto
- Programa de Pós-graduação em Ecologia e Conservação, Universidade do Estado de Mato Grosso, CEP 78690-000, Nova Xavantina, MT, Brazil
| | - Wanderley Rocha
- Amazon Environmental Research Institute (IPAM), Canarana, Mato Grosso, Brazil
| | - Liana C Rossi
- Departamento de Ecologia, Universidade Estadual Paulista, 13506-900, Rio Claro, SP, Brazil
| | - Marina Seixas
- Embrapa Amazônia Oriental, Trav. Dr. Enéas Pinheiro, s/n, CP 48, 66095-100, Belém, PA, Brazil
| | | | - Katharine A Abernethy
- Faculty of Natural Sciences, University of Stirling, Stirling FK9 4LA, UK.,Institut de Recherche en Écologie Tropicale, CENAREST, BP 842, Libreville, Gabon
| | | | - Jos Barlow
- Lancaster Environment Centre, Lancaster University, Lancaster LA1 4YQ, UK
| | | | - Beatriz S Marimon
- Programa de Pós-graduação em Ecologia e Conservação, Universidade do Estado de Mato Grosso, CEP 78690-000, Nova Xavantina, MT, Brazil
| | - Ben H Marimon-Junior
- Programa de Pós-graduação em Ecologia e Conservação, Universidade do Estado de Mato Grosso, CEP 78690-000, Nova Xavantina, MT, Brazil
| | - Patrick Meir
- Research School of Biology, Australian National University, Canberra, Australian Capital Territory 2601, Australia.,School of Geosciences, University of Edinburgh, Edinburgh EH93FF, UK
| | - Daniel B Metcalfe
- Physical Geography and Ecosystem Science, Lund University, Lund, Sweden
| | | | - Lee J T White
- Faculty of Natural Sciences, University of Stirling, Stirling FK9 4LA, UK.,Institut de Recherche en Écologie Tropicale, CENAREST, BP 842, Libreville, Gabon
| | - Yadvinder Malhi
- Environmental Change Institute, School of Geography and the Environment, University of Oxford, South Parks Road, Oxford OX1 3QY, UK
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40
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Luo X, Keenan TF, Fisher JB, Jiménez-Muñoz JC, Chen JM, Jiang C, Ju W, Perakalapudi NV, Ryu Y, Tadić JM. The impact of the 2015/2016 El Niño on global photosynthesis using satellite remote sensing. Philos Trans R Soc Lond B Biol Sci 2018; 373:rstb.2017.0409. [PMID: 30297474 DOI: 10.1098/rstb.2017.0409] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/03/2018] [Indexed: 11/12/2022] Open
Abstract
The El Niño-Southern Oscillation exerts a large influence on global climate regimes and on the global carbon cycle. Although El Niño is known to be associated with a reduction of the global total land carbon sink, results based on prognostic models or measurements disagree over the relative contribution of photosynthesis to the reduced sink. Here, we provide an independent remote sensing-based analysis on the impact of the 2015-2016 El Niño on global photosynthesis using six global satellite-based photosynthesis products and a global solar-induced fluorescence (SIF) dataset. An ensemble of satellite-based photosynthesis products showed a negative anomaly of -0.7 ± 1.2 PgC in 2015, but a slight positive anomaly of 0.05 ± 0.89 PgC in 2016, which when combined with observations of the growth rate of atmospheric carbon dioxide concentrations suggests that the reduction of the land residual sink was likely dominated by photosynthesis in 2015 but by respiration in 2016. The six satellite-based products unanimously identified a major photosynthesis reduction of -1.1 ± 0.52 PgC from savannahs in 2015 and 2016, followed by a highly uncertain reduction of -0.22 ± 0.98 PgC from rainforests. Vegetation in the Northern Hemisphere enhanced photosynthesis before and after the peak El Niño, especially in grasslands (0.33 ± 0.13 PgC). The patterns of satellite-based photosynthesis ensemble mean were corroborated by SIF, except in rainforests and South America, where the anomalies of satellite-based photosynthesis products also diverged the most. We found the inter-model variation of photosynthesis estimates was strongly related to the discrepancy between moisture forcings for models. These results highlight the importance of considering multiple photosynthesis proxies when assessing responses to climatic anomalies.This article is part of a discussion meeting issue 'The impact of the 2015/2016 El Niño on the terrestrial tropical carbon cycle: patterns, mechanisms and implications'.
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Affiliation(s)
- Xiangzhong Luo
- Climate and Ecosystem Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA .,Department of Environmental Science, Policy and Management, University of California, Berkeley, CA 94720, USA
| | - Trevor F Keenan
- Climate and Ecosystem Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA .,Department of Environmental Science, Policy and Management, University of California, Berkeley, CA 94720, USA
| | - Joshua B Fisher
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA
| | | | - Jing M Chen
- Department of Geography and Planning, University of Toronto, Toronto, ON, Canada, M5S 3G3
| | - Chongya Jiang
- BK 21 Plus Team, Seoul National University, Seoul 08826, Republic of Korea
| | - Weimin Ju
- International Institute for Earth System Science, Nanjing University, Nanjing 210046, People's Republic of China
| | | | - Youngryel Ryu
- BK 21 Plus Team, Seoul National University, Seoul 08826, Republic of Korea.,Department of Landscape Architecture and Rural Systems Engineering, Seoul National University, Seoul 08826, Republic of Korea
| | - Jovan M Tadić
- Climate and Ecosystem Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
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Mitchard ETA. The tropical forest carbon cycle and climate change. Nature 2018; 559:527-534. [DOI: 10.1038/s41586-018-0300-2] [Citation(s) in RCA: 256] [Impact Index Per Article: 42.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2017] [Accepted: 05/11/2018] [Indexed: 12/17/2022]
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Sullivan MJP, Lewis SL, Hubau W, Qie L, Baker TR, Banin LF, Chave J, Cuni-Sanchez A, Feldpausch TR, Lopez-Gonzalez G, Arets E, Ashton P, Bastin JF, Berry NJ, Bogaert J, Boot R, Brearley FQ, Brienen R, Burslem DFRP, de Canniere C, Chudomelová M, Dančák M, Ewango C, Hédl R, Lloyd J, Makana JR, Malhi Y, Marimon BS, Junior BHM, Metali F, Moore S, Nagy L, Vargas PN, Pendry CA, Ramírez-Angulo H, Reitsma J, Rutishauser E, Salim KA, Sonké B, Sukri RS, Sunderland T, Svátek M, Umunay PM, Martinez RV, Vernimmen RRE, Torre EV, Vleminckx J, Vos V, Phillips OL. Field methods for sampling tree height for tropical forest biomass estimation. Methods Ecol Evol 2018; 9:1179-1189. [PMID: 29938017 PMCID: PMC5993227 DOI: 10.1111/2041-210x.12962] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2017] [Accepted: 12/07/2017] [Indexed: 11/28/2022]
Abstract
Quantifying the relationship between tree diameter and height is a key component of efforts to estimate biomass and carbon stocks in tropical forests. Although substantial site-to-site variation in height-diameter allometries has been documented, the time consuming nature of measuring all tree heights in an inventory plot means that most studies do not include height, or else use generic pan-tropical or regional allometric equations to estimate height.Using a pan-tropical dataset of 73 plots where at least 150 trees had in-field ground-based height measurements, we examined how the number of trees sampled affects the performance of locally derived height-diameter allometries, and evaluated the performance of different methods for sampling trees for height measurement.Using cross-validation, we found that allometries constructed with just 20 locally measured values could often predict tree height with lower error than regional or climate-based allometries (mean reduction in prediction error = 0.46 m). The predictive performance of locally derived allometries improved with sample size, but with diminishing returns in performance gains when more than 40 trees were sampled. Estimates of stand-level biomass produced using local allometries to estimate tree height show no over- or under-estimation bias when compared with biomass estimates using field measured heights. We evaluated five strategies to sample trees for height measurement, and found that sampling strategies that included measuring the heights of the ten largest diameter trees in a plot outperformed (in terms of resulting in local height-diameter models with low height prediction error) entirely random or diameter size-class stratified approaches.Our results indicate that even limited sampling of heights can be used to refine height-diameter allometries. We recommend aiming for a conservative threshold of sampling 50 trees per location for height measurement, and including the ten trees with the largest diameter in this sample.
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