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Li X, Ramos Aguila LC, Wu D, Lie Z, Xu W, Tang X, Liu J. Carbon sequestration and storage capacity of Chinese fir at different stand ages. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 904:166962. [PMID: 37696397 DOI: 10.1016/j.scitotenv.2023.166962] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Revised: 08/27/2023] [Accepted: 09/08/2023] [Indexed: 09/13/2023]
Abstract
In southern China, Chinese fir Cunninghamia lanceolata is one of the most important native conifer trees, widely used in afforestation programs. This area has the largest forestland atmospheric carbon sink, and a relatively young stand age characterizes these forests. However, how C. lanceolata forests evolved regarding their ability to sequester carbon remains unclear. Here we present data on carbon storage and sequestration capacity of C. lanceolata at six stand ages (5-, 10-, 15-, 20-, 30- and 60 - year-old stands). Results show that the carbon stock in trees, understory, vegetation, litter, soil, and ecosystem significantly increased with forest age. The total ecosystem carbon stock increased from 129.11 to 348.43 Mg ha-1 in the 5- and 60 - year-old stands. The carbon sequestration rate of C. lanceolata shows an overall increase in the first two stand intervals (5-10 and 10-15), peaks in the 15-20 stand intervals, and then decreases in the 20-30 and 30-60 stand intervals. Our result revealed that carbon sequestration rate is a matter of tree age, with the highest sequestration rates occurring in the middle age forest (15-20 - year-old). Therefore, this information may be useful for national climate change mitigation actions and afforestation programs, since forests are primarily planted for this purpose.
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Affiliation(s)
- Xu Li
- Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China; Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Luis Carlos Ramos Aguila
- Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China; Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China
| | - Donghai Wu
- Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China; Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China
| | - Zhiyang Lie
- Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China; Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China
| | - Wenfang Xu
- Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China; Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China
| | - Xuli Tang
- Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China; Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China
| | - Juxiu Liu
- Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China; Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China.
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2
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de Lima RB, Görgens EB, da Silva DAS, de Oliveira CP, Batista APB, Caraciolo Ferreira RL, Costa FRC, Ferreira de Lima RA, da Silva Aparício P, de Abreu JC, da Silva JAA, Guimaraes AF, Fearnside PM, Sousa TR, Perdiz R, Higuchi N, Berenguer E, Resende AF, Elias F, de Castilho CV, de Medeiros MB, de Matos Filho JR, Sardinha MA, Freitas MAF, da Silva JJ, da Cunha AP, Santos RM, Muelbert AE, Guedes MC, Imbrózio R, de Sousa CSC, da Silva Aparício WC, da Silva E Silva BM, Silva CA, Marimon BS, Junior BHM, Morandi PS, Storck-Tonon D, Vieira ICG, Schietti J, Coelho F, Alves de Almeida DR, Castro W, Carvalho SPC, da Silva RDSA, Silveira J, Camargo JL, Melgaço K, de Freitas LJM, Vedovato L, Benchimol M, de Oliveira de Almeida G, Prance G, da Silveira AB, Simon MF, Garcia ML, Silveira M, Vital M, Andrade MBT, Silva N, de Araújo RO, Cavalheiro L, Carpanedo R, Fernandes L, Manzatto AG, de Andrade RTG, Magnusson WE, Laurance B, Nelson BW, Peres C, Daly DC, Rodrigues D, Zopeletto AP, de Oliveira EA, Dugachard E, Barbosa FR, Santana F, do Amaral IL, Ferreira LV, Charão LS, Ferreira J, Barlow J, Blanc L, Aragão L, Sist P, de Paiva Salomão R, da Silva ASL, Laurance S, Feldpausch TR, Gardner T, Santiago W, Balee W, Laurance WF, Malhi Y, Phillips OL, da Silva Zanzini AC, Rosa C, Tadeu Oliveira W, Pereira Zanzini L, José Silva R, Mangabeira Albernaz AL. Giants of the Amazon: How does environmental variation drive the diversity patterns of large trees? GLOBAL CHANGE BIOLOGY 2023; 29:4861-4879. [PMID: 37386918 DOI: 10.1111/gcb.16821] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2022] [Revised: 04/13/2023] [Accepted: 06/02/2023] [Indexed: 07/01/2023]
Abstract
For more than three decades, major efforts in sampling and analyzing tree diversity in South America have focused almost exclusively on trees with stems of at least 10 and 2.5 cm diameter, showing highest species diversity in the wetter western and northern Amazon forests. By contrast, little attention has been paid to patterns and drivers of diversity in the largest canopy and emergent trees, which is surprising given these have dominant ecological functions. Here, we use a machine learning approach to quantify the importance of environmental factors and apply it to generate spatial predictions of the species diversity of all trees (dbh ≥ 10 cm) and for very large trees (dbh ≥ 70 cm) using data from 243 forest plots (108,450 trees and 2832 species) distributed across different forest types and biogeographic regions of the Brazilian Amazon. The diversity of large trees and of all trees was significantly associated with three environmental factors, but in contrasting ways across regions and forest types. Environmental variables associated with disturbances, for example, the lightning flash rate and wind speed, as well as the fraction of photosynthetically active radiation, tend to govern the diversity of large trees. Upland rainforests in the Guiana Shield and Roraima regions had a high diversity of large trees. By contrast, variables associated with resources tend to govern tree diversity in general. Places such as the province of Imeri and the northern portion of the province of Madeira stand out for their high diversity of species in general. Climatic and topographic stability and functional adaptation mechanisms promote ideal conditions for species diversity. Finally, we mapped general patterns of tree species diversity in the Brazilian Amazon, which differ substantially depending on size class.
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Affiliation(s)
| | - Eric Bastos Görgens
- Departamento de Engenharia Florestal, Universidade Federal do Vales do Jequitinhonha e Mucuri, Diamantina, Brazil
| | | | | | | | - Rinaldo L Caraciolo Ferreira
- Laboratório de Manejo de Florestas Naturais "José Serafim Feitoza Ferraz", Departamento de Ciência Florestal, Universidade Federal Rural de Pernambuco, Recife, Brazil
| | - Flavia R C Costa
- Coordenação de Pesquisas em Biodiversidade, Instituto Nacional de Pesquisas da Amazônia, Manaus, Brazil
| | | | | | | | - José Antônio Aleixo da Silva
- Laboratório de Manejo de Florestas Naturais "José Serafim Feitoza Ferraz", Departamento de Ciência Florestal, Universidade Federal Rural de Pernambuco, Recife, Brazil
| | - Aretha Franklin Guimaraes
- Programa de Pós-Graduação em Botânica Aplicada, Departamento de Biologia, Universidade Federal de Lavras, Lavras, Brazil
| | - Philip M Fearnside
- Instituto Nacional de Pesquisas da Amazônia, Av. André Araújo, Manaus, Brazil
| | - Thaiane R Sousa
- Programa de Pós-Graduação em Ecologia, Instituto Nacional de Pesquisas da Amazônia, Manaus, Brazil
| | - Ricardo Perdiz
- Programa de Pós-Graduação em Botânica, Instituto Nacional de Pesquisas da Amazônia (INPA), Manaus, Brazil
| | - Niro Higuchi
- Instituto Nacional de Pesquisas da Amazônia-Coordenação de Pesquisas em Silvicultura Tropical, Manaus, Brazil
| | - Erika Berenguer
- Environmental Change Institute, School of Geography and the Environment, University of Oxford, Oxford, UK
- Lancaster Environment Centre, Lancaster University, Lancaster, UK
| | | | - Fernando Elias
- Programa de Pós-Graduação em Ecologia, Instituto de Ciências Biológicas, Universidade Federal do Pará, Belém, Brazil
| | | | | | | | - Maurício Alves Sardinha
- Programa de Pós-Graduação em Biodiversidade e Biotecnologia-Rede Bionorte, Universidade Federal do Amapá, Macapá, Brazil
| | | | - José Jussian da Silva
- Instituto Federal de Educação Ciência e Tecnologia do Amapá, Laranjal do Jari, Brazil
| | | | - Renan Mendes Santos
- Laboratório de Manejo Florestal, Universidade do Estado do Amapá, Macapá, Brazil
| | | | | | - Reinaldo Imbrózio
- Instituto Nacional de Pesquisas da Amazônia, Av. André Araújo, Manaus, Brazil
| | | | | | | | | | - Beatriz Schwantes Marimon
- Faculdade de Ciências Agrárias, Biológicas e Sociais Aplicadas, Universidade do Estado de Mato Grosso, Nova Xavantina, Brazil
| | - Ben Hur Marimon Junior
- Faculdade de Ciências Agrárias, Biológicas e Sociais Aplicadas, Universidade do Estado de Mato Grosso, Nova Xavantina, Brazil
| | - Paulo S Morandi
- Universidade do Estado de Mato Grosso, Campus de Nova Xavantina, Nova Xavantina, Brazil
| | - Danielle Storck-Tonon
- Programa de Pós-Graduação em Ambiente e Sistemas de Produção Agrícola, Universidade do Estado de Mato Grosso, Tangará da Serra, Brazil
| | | | - Juliana Schietti
- Departamento de Biologia, Universidade Federal do Amazonas, Manaus, Brazil
| | - Fernanda Coelho
- Department of Forestry, University of Brasilia, Brasilia, Brazil
| | - Danilo R Alves de Almeida
- Department of Forest Sciences, "Luiz de Queiroz" College of Agriculture, University of São Paulo (USP/ESALQ), Piracicaba, Brazil
| | - Wendeson Castro
- Laboratório de Botânica e Ecologia Vegetal, Universidade Federal do Acre, Rio Branco, Brazil
| | | | | | - Juliana Silveira
- Lancaster Environment Centre, Lancaster University, Lancaster, UK
| | | | | | | | | | - Maíra Benchimol
- Laboratório de Ecologia Aplicada à Conservação, Universidade Estadual de Santa Cruz, Salobrinho, Brazil
| | | | | | | | - Marcelo Fragomeni Simon
- Programa de Pós-Graduação em Ecologia, Instituto de Ciências Biológicas, Universidade Federal do Pará, Belém, Brazil
| | | | - Marcos Silveira
- Museu Universitário, Universidade Federal do Acre, Rio Branco, Brazil
| | - Marcos Vital
- Universidade Federal de Roraima (UFRR), Boa Vista, Brazil
| | - Maryane B T Andrade
- Instituto Nacional de Pesquisas da Amazônia, Av. André Araújo, Manaus, Brazil
| | | | | | | | - Rainiellen Carpanedo
- Universidade Federal de Mato Grosso (UFMT), Núcleo de Estudos da Biodiversidade da Amazônia Mato-grossense, Sinop, Brazil
| | | | | | | | - William E Magnusson
- Instituto Nacional de Pesquisas da Amazônia, Av. André Araújo, Manaus, Brazil
| | - Bill Laurance
- James Cook University, Douglas, Queensland, Australia
| | - Bruce Walker Nelson
- Instituto Nacional de Pesquisas da Amazônia, Av. André Araújo, Manaus, Brazil
| | | | - Douglas C Daly
- Institute of Systematic Botany, The New York Botanical Garden, Bronx, New York, USA
| | - Domingos Rodrigues
- Universidade Federal de Mato Grosso, Instituto de Ciências Naturais, Humanas e Sociais, Sinop, Brazil
| | | | | | | | | | - Flavia Santana
- Instituto Nacional de Pesquisas da Amazônia, Av. André Araújo, Manaus, Brazil
| | - Iêda Leão do Amaral
- Instituto Nacional de Pesquisas da Amazônia, Av. André Araújo, Manaus, Brazil
| | | | - Leandro S Charão
- Facultad de Ingeniería y Ciencias, Universidad Autónoma de Tamaulipas, Victoria, Mexico
| | - Joice Ferreira
- Embrapa Amazônia Oriental, Rede Amazônia Sustentável, Belém, Brazil
| | - Jos Barlow
- Lancaster Environment Centre, Lancaster University, Lancaster, UK
| | - Lilian Blanc
- Unité Propre de Recherche Biens et Services des Écosystèmes Forestiers Tropicaux: l'Enjeu du Changement Global (BSEF), CIRAD, Montpellier, France
| | - Luiz Aragão
- National Institute for Space Research (INPE), São José dos Campos, Brazil
| | - Plinio Sist
- Centre de Coopération International en Recherche Agronomique pour le Développement (CIRAD), Paris, France
| | | | | | - Susan Laurance
- Centre for Tropical Environmental and Sustainability Science (TESS), College of Marine and Environmental Sciences, James Cook University, Douglas, Queensland, Australia
| | | | - Toby Gardner
- Stockholm Environment Institute, Stockholm, Sweden
| | | | | | - William F Laurance
- Centre for Tropical Environmental and Sustainability Science (TESS), College of Marine and Environmental Sciences, James Cook University, Douglas, Queensland, Australia
| | - Yadvinder Malhi
- Environmental Change Institute, School of Geography and the Environment, University of Oxford, Oxford, UK
| | | | - Antônio Carlos da Silva Zanzini
- Setor de Ecologia e Manejo da Vida Silvestre, Departamento de Ciências Florestais, Universidade Federal de Lavras, Lavras, MG, Brazil
| | - Clarissa Rosa
- Coordenação de Pesquisas em Biodiversidade, Instituto Nacional de Pesquisas da Amazônia, Manaus, Brazil
| | - Wagner Tadeu Oliveira
- CESAM - Centro de Estudos do Ambiente e do Mar, Departamento de Biologia, Collaborating Researcher, University of Aveiro, Aveiro, Portugal
| | - Lucas Pereira Zanzini
- Departamento de Engenharia Florestal, Universidade do Estado de Mato Grosso, Cáceres, MT, Brazil
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3
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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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4
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Zoletto B, van der Sande MT, van der Sleen P, Sheil D. Lightning scars on tropical trees-Evidence and opportunities. Ecol Evol 2023; 13:e10210. [PMID: 37332514 PMCID: PMC10271212 DOI: 10.1002/ece3.10210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2023] [Revised: 05/31/2023] [Accepted: 06/06/2023] [Indexed: 06/20/2023] Open
Abstract
Lightning strikes are a significant cause of tree mortality and damage in some regions of the tropics. Formation of lightning scars on tropical trees, however, is considered rare and therefore of little relevance in identifying trees struck by lightning. Here, we suggest, based on observations made in the Bwindi Impenetrable National Park (Uganda), that lightning scars can be frequent and may be a useful diagnostic feature to aid in identifying trees struck by lightning.
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Affiliation(s)
- Bianca Zoletto
- Forest Ecology and Forest Management GroupWageningen UniversityWageningenThe Netherlands
| | - Masha T. van der Sande
- Forest Ecology and Forest Management GroupWageningen UniversityWageningenThe Netherlands
| | - Peter van der Sleen
- Forest Ecology and Forest Management GroupWageningen UniversityWageningenThe Netherlands
| | - Douglas Sheil
- Forest Ecology and Forest Management GroupWageningen UniversityWageningenThe Netherlands
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5
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Feng Y, Negrón-Juárez RI, Romps DM, Chambers JQ. Amazon windthrow disturbances are likely to increase with storm frequency under global warming. Nat Commun 2023; 14:101. [PMID: 36609508 PMCID: PMC9822931 DOI: 10.1038/s41467-022-35570-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Accepted: 12/09/2022] [Indexed: 01/07/2023] Open
Abstract
Forest mortality caused by convective storms (windthrow) is a major disturbance in the Amazon. However, the linkage between windthrows at the surface and convective storms in the atmosphere remains unclear. In addition, the current Earth system models (ESMs) lack mechanistic links between convective wind events and tree mortality. Here we find an empirical relationship that maps convective available potential energy, which is well simulated by ESMs, to the spatial pattern of large windthrow events. This relationship builds connections between strong convective storms and forest dynamics in the Amazon. Based on the relationship, our model projects a 51 ± 20% increase in the area favorable to extreme storms, and a 43 ± 17% increase in windthrow density within the Amazon by the end of this century under the high-emission scenario (SSP 585). These results indicate significant changes in tropical forest composition and carbon cycle dynamics under climate change.
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Affiliation(s)
- Yanlei Feng
- Department of Geography, University of California, Berkeley, CA, USA.
| | - Robinson I Negrón-Juárez
- Climate and Ecosystem Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
| | - David M Romps
- Climate and Ecosystem Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA.,Department of Earth and Planetary Science, University of California, Berkeley, CA, USA
| | - Jeffrey Q Chambers
- Department of Geography, University of California, Berkeley, CA, USA.,Climate and Ecosystem Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
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Richards JH, Gora EM, Gutierrez C, Burchfield JC, Bitzer PM, Yanoviak SP. Tropical tree species differ in damage and mortality from lightning. NATURE PLANTS 2022; 8:1007-1013. [PMID: 35995834 DOI: 10.1038/s41477-022-01230-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2021] [Accepted: 07/19/2022] [Indexed: 06/15/2023]
Abstract
Lightning is an important agent of mortality for large tropical trees with implications for tree demography and forest carbon budgets. We evaluated interspecific differences in susceptibility to lightning damage using a unique dataset of systematically located lightning strikes in central Panama. We measured differences in mortality among trees damaged by lightning and related those to damage frequency and tree functional traits. Eighteen of 30 focal species had lightning mortality rates that deviated from null expectations. Several species showed little damage and three species had no mortality from lightning, whereas palms were especially likely to die from strikes. Species that were most likely to be struck also showed the highest survival. Interspecific differences in tree tolerance to lightning suggest that lightning-caused mortality shapes compositional dynamics over time and space. Shifts in lightning frequency due to climatic change are likely to alter species composition and carbon cycling in tropical forests.
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Affiliation(s)
- Jeannine H Richards
- Department of Biology, University of Louisville, Louisville, KY, USA
- Department of Botany, University of Wisconsin-Madison, Madison, WI, USA
| | - Evan M Gora
- Department of Biology, University of Louisville, Louisville, KY, USA
- Smithsonian Tropical Research Institute, Balboa, Panama
- Cary Institute of Ecosystem Studies, Millbrook, New York, NY, USA
| | | | - Jeffrey C Burchfield
- Department of Atmospheric Science, University of Alabama in Huntsville, Huntsville, AL, USA
| | - Philip M Bitzer
- Department of Atmospheric Science, University of Alabama in Huntsville, Huntsville, AL, USA
| | - Stephen P Yanoviak
- Department of Biology, University of Louisville, Louisville, KY, USA.
- Smithsonian Tropical Research Institute, Balboa, Panama.
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7
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Menezes LS, de Oliveira AM, Santos FLM, Russo A, de Souza RAF, Roque FO, Libonati R. Lightning patterns in the Pantanal: Untangling natural and anthropogenic-induced wildfires. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 820:153021. [PMID: 35026277 DOI: 10.1016/j.scitotenv.2022.153021] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Revised: 01/04/2022] [Accepted: 01/06/2022] [Indexed: 06/14/2023]
Abstract
The identification of fire causes and characteristics is of fundamental importance to better understand fire regimes and drivers. Particularly for Brazil, there is a gap in the quantification of lightning-caused fires. Accordingly, this work is a novel probabilistic assessment of the spatial-temporal patterns of lightning-ignited wildfires in the Pantanal wetland. Here, remote sensing information such as VIIRS active fires, MODIS burned area (BA) and STARNET lightning observations from 2012 to 2017, were combined to estimate the location, number of scars and amount of BA associated with atmospheric discharges on a seasonal basis. The highest lightning activity occurs during summer (December-February), and the lowest during winter (June-August). Conversely, the highest fire activity occurred during spring (September-November) and the lowest during autumn (March-May). Our analysis revealed low evidence of an association between fires and lightning, suggesting that human-related activities are the main source of ignitions. Weak evidence of natural-caused fire occurrence is conveyed by the low spatial-temporal match of lightning and fire throughout the studied period. Natural-caused fires accounted for only 5% of the annual total scars and 83.8% of the BA was human-caused. Most of the fires with extension larger than 1000 ha were not related to lighting. Lightning-fires seem an important element of the summer fire regime given that around half of the total BA during this season may be originated by lightning. By contrast, in the rest of the year the lightning-fires represent a minor percentage of the fire activity in the region. The density of lightning-ignited fires varies considerably, being higher in the north part of the Pantanal. This work provides a basis for a better understanding of lightning-related fire outbreaks in tropical ecosystems, particularly wetlands, which is fundamental to improve region-based strategies for land management actions, ecological studies and modeling climatic and anthropogenic drivers of wildfires.
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Affiliation(s)
- Lucas S Menezes
- Departamento de Meteorologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Aline M de Oliveira
- Departamento de Meteorologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Filippe L M Santos
- Departamento de Meteorologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil; Programa de Pós-Graduação em Clima e Ambiente (CLIAMB), Instituto Nacional de Pesquisa da Amazônia (INPA) and Universidade do Estado do Amazonas (UEA), Manaus, AM, Brazil
| | - Ana Russo
- Instituto Dom Luiz (IDL), Faculdade de Ciências, Universidade de Lisboa, 1749-016 Lisboa, Portugal
| | - Rodrigo A F de Souza
- Programa de Pós-Graduação em Clima e Ambiente (CLIAMB), Instituto Nacional de Pesquisa da Amazônia (INPA) and Universidade do Estado do Amazonas (UEA), Manaus, AM, Brazil; Universidade do Estado do Amazonas, Escola Superior de Tecnologia, 69050-020 Manaus, AM, Brazil
| | - Fabio O Roque
- Universidade Federal de Mato Grosso do Sul, Caixa Postal 549, Campo Grande, Mato Grosso do Sul CEP 79070-900, Brazil; Centre for Tropical Environmental and Sustainability Science (TESS) and College of Science and Engineering, James Cook University, Cairns, QLD 4878, Australia
| | - Renata Libonati
- Departamento de Meteorologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil; Instituto Dom Luiz (IDL), Faculdade de Ciências, Universidade de Lisboa, 1749-016 Lisboa, Portugal.
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8
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Needham JF, Johnson DJ, Anderson-Teixeira KJ, Bourg N, Bunyavejchewin S, Butt N, Cao M, Cárdenas D, Chang-Yang CH, Chen YY, Chuyong G, Dattaraja HS, Davies SJ, Duque A, Ewango CEN, Fernando ES, Fisher R, Fletcher CD, Foster R, Hao Z, Hart T, Hsieh CF, Hubbell SP, Itoh A, Kenfack D, Koven CD, Larson AJ, Lutz JA, McShea W, Makana JR, Malhi Y, Marthews T, Bt Mohamad M, Morecroft MD, Norden N, Parker G, Shringi A, Sukumar R, Suresh HS, Sun IF, Tan S, Thomas DW, Thompson J, Uriarte M, Valencia R, Yao TL, Yap SL, Yuan Z, Yuehua H, Zimmerman JK, Zuleta D, McMahon SM. Demographic composition, not demographic diversity, predicts biomass and turnover across temperate and tropical forests. GLOBAL CHANGE BIOLOGY 2022; 28:2895-2909. [PMID: 35080088 DOI: 10.1111/gcb.16100] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Revised: 01/12/2022] [Accepted: 01/14/2022] [Indexed: 06/14/2023]
Abstract
The growth and survival of individual trees determine the physical structure of a forest with important consequences for forest function. However, given the diversity of tree species and forest biomes, quantifying the multitude of demographic strategies within and across forests and the way that they translate into forest structure and function remains a significant challenge. Here, we quantify the demographic rates of 1961 tree species from temperate and tropical forests and evaluate how demographic diversity (DD) and demographic composition (DC) differ across forests, and how these differences in demography relate to species richness, aboveground biomass (AGB), and carbon residence time. We find wide variation in DD and DC across forest plots, patterns that are not explained by species richness or climate variables alone. There is no evidence that DD has an effect on either AGB or carbon residence time. Rather, the DC of forests, specifically the relative abundance of large statured species, predicted both biomass and carbon residence time. Our results demonstrate the distinct DCs of globally distributed forests, reflecting biogeography, recent history, and current plot conditions. Linking the DC of forests to resilience or vulnerability to climate change, will improve the precision and accuracy of predictions of future forest composition, structure, and function.
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Affiliation(s)
- Jessica F Needham
- Forest Global Earth Observatory, Smithsonian Tropical Research Institute, Panama City, Panama
- Smithsonian Environmental Research Center, Edgewater, Maryland, USA
- Lawrence Berkeley National Laboratory, Berkeley, California, USA
| | - Daniel J Johnson
- School of Forest, Fisheries, and Geomatics Sciences, University of Florida, Gainesville, Florida, USA
| | - Kristina J Anderson-Teixeira
- Forest Global Earth Observatory, Smithsonian Tropical Research Institute, Panama City, Panama
- Smithsonian Conservation Biology Institute, Front Royal, Virginia, USA
| | - Norman Bourg
- Smithsonian Conservation Biology Institute, Front Royal, Virginia, USA
| | - Sarayudh Bunyavejchewin
- Department of National Parks, Wildlife and Plant Conservation, Forest Research Office, Chatuchak, Bangkok, Thailand
| | - Nathalie Butt
- School of Earth and Environmental Sciences, University of Queensland, St Lucia, Queensland, Australia
| | - Min Cao
- CAS Key Laboratory of Tropical Forest Ecology, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Kunming, Yunnan, China
| | - Dairon Cárdenas
- Herbario Amazónico Colombiana, Instituto Amazónico de Investigaciones Científicas Sinchi, Bogotá, Colombia
| | - Chia-Hao Chang-Yang
- Department of Biological Sciences, National Sun Yat-sen University, Kaohsiung, Taiwan
| | - Yu-Yun Chen
- Department of Natural Resources and Environmental Studies, National Dong Hwa University, Hualien, Taiwan
| | - George Chuyong
- Department of Plant Science, University of Buea, Buea, Cameroon
| | | | - Stuart J Davies
- Forest Global Earth Observatory, Smithsonian Tropical Research Institute, Panama City, Panama
- Smithsonian Tropical Research Institute, Washington DC, USA
| | - Alvaro Duque
- Departmento de Ciencias Forestales, Universidad Nacional de Colombia Sede Medellín, Medellín, Colombia
| | - Corneille E N Ewango
- Faculty of the Management of Renewable Natural Resources, University of Kisangani, Kisangani, Democratic Republic of Congo
| | - Edwino S Fernando
- Department of Forest Biological Sciences, University of the Philippines, Los Baños, Philippines
- Institute of Biology, University of the Philippines-Diliman, Quezon City, Philippines
| | - Rosie Fisher
- CICERO Center for International Climate Research, Oslo, Norwary
| | | | - Robin Foster
- Department of Botany, Field Museum, Chicago, Illinois, USA
| | - Zhanqing Hao
- School of Ecology and Environment, Northwestern Polytechnical University, Xi'an, Shaanxi, China
| | - Terese Hart
- Tshuapa-Lomami-Lualaba Project (TL2), Lukuru Wildlife Research Foundation, Kinshasa, Democratic Republic of Congo
| | - Chang-Fu Hsieh
- Institute of Ecology and Evolutionary Biology, National Taiwan University, Taipei, Taiwan
| | - Stephen P Hubbell
- Department of Ecology and Evolutionary Biology, University of California, Los Angeles, California, USA
- Smithsonian Tropical Research Institute, Panama City, Panama
| | - Akira Itoh
- Graduate School of Science, Osaka City University, Osaka, Japan
| | - David Kenfack
- Forest Global Earth Observatory, Smithsonian Tropical Research Institute, Panama City, Panama
- Smithsonian Tropical Research Institute, Washington DC, USA
| | - Charles D Koven
- Lawrence Berkeley National Laboratory, Berkeley, California, USA
| | - Andrew J Larson
- Department of Forest Management and Wilderness Institute, W.A. Franke College of Forestry and Conservation, University of Montana, Missoula, Montana, USA
| | - James A Lutz
- Wildland Resources Department, Utah State University, Logan, Utah, USA
| | - William McShea
- Smithsonian Conservation Biology Institute, Front Royal, Virginia, USA
| | - Jean-Remy Makana
- Faculty of Sciences, Department of Plant Ecology & Natural Resources Management, University of Kisangani, Kisangani, Democratic Republic of Congo
| | - Yadvinder Malhi
- School of Geography and the Environment, University of Oxford, Oxford, UK
| | | | | | | | - Natalia Norden
- Programa de Ciencias Básicas de la Biodiversidad, Instituto de Investigación de Recursos Biológicos Alexander von Humboldt, Bogotá, Colombia
| | - Geoffrey Parker
- Smithsonian Environmental Research Center, Edgewater, Maryland, USA
| | - Ankur Shringi
- Centre for Ecological Sciences, Indian Institute of Science, Bangalore, Karnataka, India
| | - Raman Sukumar
- Centre for Ecological Sciences, Indian Institute of Science, Bangalore, Karnataka, India
- Divecha Center for Climate Change, Indian Institute of Science, Bangalore, Karnataka, India
| | - Hebbalalu S Suresh
- Centre for Ecological Sciences, Indian Institute of Science, Bangalore, Karnataka, India
- Divecha Center for Climate Change, Indian Institute of Science, Bangalore, Karnataka, India
| | - I-Fang Sun
- Department of Natural Resources and Environmental Studies, National Dong Hwa University, Hualien, Taiwan
| | - Sylvester Tan
- Sarawak Forestry Department, Kuching, Sarawak, Malaysia
| | - Duncan W Thomas
- School of Biological Sciences, Washington State University, Vancouver, Washington, USA
| | - Jill Thompson
- UK Centre for Ecology & Hydrology, Bush Estate, Penicuik, Midlothian, UK
| | - Maria Uriarte
- Department of Ecology, Evolution and Environmental Biology, Columbia University, New York, New York, USA
| | - Renato Valencia
- Escuela de Ciencias Biológicas, Pontificia Universidad Católica del Ecuador, Quito, Ecuador
| | - Tze Leong Yao
- Forest Research Institute Malaysia, Kepong, Selangor, Malaysia
| | | | - Zuoqiang Yuan
- Key Laboratory of Forest Ecology and Management, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, China
| | - Hu Yuehua
- CAS Key Laboratory of Tropical Forest Ecology, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Kunming, Yunnan, China
| | - Jess K Zimmerman
- Department of Environmental Sciences, University of Puerto Rico, Río Piedras, Puerto Rico
| | - Daniel Zuleta
- Forest Global Earth Observatory, Smithsonian Tropical Research Institute, Panama City, Panama
- Smithsonian Tropical Research Institute, Washington DC, USA
| | - Sean M McMahon
- Forest Global Earth Observatory, Smithsonian Tropical Research Institute, Panama City, Panama
- Smithsonian Environmental Research Center, Edgewater, Maryland, USA
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9
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Gora EM, Bitzer PM, Burchfield JC, Gutierrez C, Yanoviak SP. The contributions of lightning to biomass turnover, gap formation and plant mortality in a tropical forest. Ecology 2021; 102:e03541. [PMID: 34582567 DOI: 10.1002/ecy.3541] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/13/2021] [Revised: 08/30/2021] [Accepted: 09/03/2021] [Indexed: 11/11/2022]
Abstract
Lightning is a common source of disturbance, but its ecological effects in tropical forests are largely undescribed. Here we quantify the contributions of lightning strikes to forest turnover and plant mortality in a lowland Panamanian forest using a real-time lightning monitoring system. We examined 2,195 lightning-damaged trees distributed among 93 different strikes. None exhibited scars or fires. On average, each strike disturbed 451 m2 (95% CI: 365-545 m2 ), created a canopy gap of 304 m2 (95% CI 198-454 m2 ), and caused 7.36 Mg of woody biomass turnover (CI: 5.36-9.65 Mg). Cumulatively, we estimate that lightning strikes in this forest create canopy gaps equaling 0.39% of forest canopy area, representing 20.1% of annual gap area formation, and are responsible for 16.1% of total woody biomass turnover. Trees, lianas, herbaceous climbers and epiphytes were killed by lightning at rates 8-29 times greater than their baseline mortality rates in undamaged control sites. The likelihood of lightning-caused death was higher for trees, lianas, and herbaceous climbers than for epiphytes, and high liana mortality suggests that lightning is an important driver of liana turnover. These results indicate that lightning influences gap dynamics, plant community composition and carbon storage capacity in some tropical forests.
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Affiliation(s)
- Evan M Gora
- Department of Biology, University of Louisville, Louisville, Kentucky, 40292, USA.,Smithsonian Tropical Research Institute, Balboa, Panama
| | - Phillip M Bitzer
- Department of Atmospheric Science, University of Alabama in Huntsville, Huntsville, Alabama, 35805, USA
| | - Jeffrey C Burchfield
- Department of Atmospheric Science, University of Alabama in Huntsville, Huntsville, Alabama, 35805, USA
| | | | - Stephen P Yanoviak
- Department of Biology, University of Louisville, Louisville, Kentucky, 40292, USA.,Smithsonian Tropical Research Institute, Balboa, Panama
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10
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Gora EM, Esquivel-Muelbert A. Implications of size-dependent tree mortality for tropical forest carbon dynamics. NATURE PLANTS 2021; 7:384-391. [PMID: 33782580 DOI: 10.1038/s41477-021-00879-0] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2020] [Accepted: 02/11/2021] [Indexed: 05/25/2023]
Abstract
Tropical forests are mitigating the ongoing climate crisis by absorbing more atmospheric carbon than they emit. However, widespread increases in tree mortality rates are decreasing the ability of tropical forests to assimilate and store carbon. A relatively small number of large trees dominate the contributions of these forests to the global carbon budget, yet we know remarkably little about how these large trees die. Here, we propose a cohesive and empirically informed framework for understanding and investigating size-dependent drivers of tree mortality. This theory-based framework enables us to posit that abiotic drivers of tree mortality-particularly drought, wind and lightning-regulate tropical forest carbon cycling via their disproportionate effects on large trees. As global change is predicted to increase the pressure from abiotic drivers, the associated deaths of large trees could rapidly and lastingly reduce tropical forest biomass stocks. Focused investigations of large tree death are needed to understand how shifting drivers of mortality are restructuring carbon cycling in tropical forests.
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Affiliation(s)
- Evan M Gora
- Smithsonian Tropical Research Institute, Balboa, Ancón, Panama.
| | - Adriane Esquivel-Muelbert
- School of Geography, University of Birmingham, Birmingham, UK.
- Birmingham Institute of Forest Research, Birmingham, UK.
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11
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Lightning strikes as a major facilitator of prebiotic phosphorus reduction on early Earth. Nat Commun 2021; 12:1535. [PMID: 33727565 PMCID: PMC7966383 DOI: 10.1038/s41467-021-21849-2] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2020] [Accepted: 02/12/2021] [Indexed: 11/08/2022] Open
Abstract
When hydrated, phosphides such as the mineral schreibersite, (Fe,Ni)3P, allow for the synthesis of important phosphorus-bearing organic compounds. Such phosphides are common accessory minerals in meteorites; consequently, meteorites are proposed to be a main source of prebiotic reactive phosphorus on early Earth. Here, we propose an alternative source for widespread phosphorus reduction, arguing that lightning strikes on early Earth potentially formed 10-1000 kg of phosphide and 100-10,000 kg of phosphite and hypophosphite annually. Therefore, lightning could have been a significant source of prebiotic, reactive phosphorus which would have been concentrated on landmasses in tropical regions. Lightning strikes could likewise provide a continual source of prebiotic reactive phosphorus independent of meteorite flux on other Earth-like planets, potentially facilitating the emergence of terrestrial life indefinitely.
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12
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Muller-Landau HC, Cushman KC, Arroyo EE, Martinez Cano I, Anderson-Teixeira KJ, Backiel B. Patterns and mechanisms of spatial variation in tropical forest productivity, woody residence time, and biomass. THE NEW PHYTOLOGIST 2021; 229:3065-3087. [PMID: 33207007 DOI: 10.1111/nph.17084] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Accepted: 10/12/2020] [Indexed: 05/25/2023]
Abstract
Tropical forests vary widely in biomass carbon (C) stocks and fluxes even after controlling for forest age. A mechanistic understanding of this variation is critical to accurately predicting responses to global change. We review empirical studies of spatial variation in tropical forest biomass, productivity and woody residence time, focusing on mature forests. Woody productivity and biomass decrease from wet to dry forests and with elevation. Within lowland forests, productivity and biomass increase with temperature in wet forests, but decrease with temperature where water becomes limiting. Woody productivity increases with soil fertility, whereas residence time decreases, and biomass responses are variable, consistent with an overall unimodal relationship. Areas with higher disturbance rates and intensities have lower woody residence time and biomass. These environmental gradients all involve both direct effects of changing environments on forest C fluxes and shifts in functional composition - including changing abundances of lianas - that substantially mitigate or exacerbate direct effects. Biogeographic realms differ significantly and importantly in productivity and biomass, even after controlling for climate and biogeochemistry, further demonstrating the importance of plant species composition. Capturing these patterns in global vegetation models requires better mechanistic representation of water and nutrient limitation, plant compositional shifts and tree mortality.
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Affiliation(s)
- Helene C Muller-Landau
- Center for Tropical Forest Science-Forest Global Earth Observatory, Smithsonian Tropical Research Institute, PO Box 0843-03092, Balboa, Ancón, Panama
| | - K C Cushman
- Center for Tropical Forest Science-Forest Global Earth Observatory, Smithsonian Tropical Research Institute, PO Box 0843-03092, Balboa, Ancón, Panama
| | - Eva E Arroyo
- Department of Ecology, Evolution and Environmental Biology, Columbia University, 1200 Amsterdam Avenue, New York, NY, 10027, USA
| | - Isabel Martinez Cano
- Department of Ecology and Evolutionary Biology, Princeton University, Princeton, NJ, 08544, USA
| | - Kristina J Anderson-Teixeira
- Center for Tropical Forest Science-Forest Global Earth Observatory, Smithsonian Tropical Research Institute, PO Box 0843-03092, Balboa, Ancón, Panama
- Conservation Ecology Center, Smithsonian Conservation Biology Institute and National Zoological Park, 1500 Remount Rd, Front Royal, VA, 22630, USA
| | - Bogumila Backiel
- Center for Tropical Forest Science-Forest Global Earth Observatory, Smithsonian Tropical Research Institute, PO Box 0843-03092, Balboa, Ancón, Panama
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13
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Libonati R, Pereira JMC, Da Camara CC, Peres LF, Oom D, Rodrigues JA, Santos FLM, Trigo RM, Gouveia CMP, Machado-Silva F, Enrich-Prast A, Silva JMN. Twenty-first century droughts have not increasingly exacerbated fire season severity in the Brazilian Amazon. Sci Rep 2021; 11:4400. [PMID: 33623067 PMCID: PMC7902828 DOI: 10.1038/s41598-021-82158-8] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2020] [Accepted: 01/13/2021] [Indexed: 01/31/2023] Open
Abstract
Biomass burning in the Brazilian Amazon is modulated by climate factors, such as droughts, and by human factors, such as deforestation, and land management activities. The increase in forest fires during drought years has led to the hypothesis that fire activity decoupled from deforestation during the twenty-first century. However, assessment of the hypothesis relied on an incorrect active fire dataset, which led to an underestimation of the decreasing trend in fire activity and to an inflated rank for year 2015 in terms of active fire counts. The recent correction of that database warrants a reassessment of the relationships between deforestation and fire. Contrasting with earlier findings, we show that the exacerbating effect of drought on fire season severity did not increase from 2003 to 2015 and that the record-breaking dry conditions of 2015 had the least impact on fire season of all twenty-first century severe droughts. Overall, our results for the same period used in the study that originated the fire-deforestation decoupling hypothesis (2003-2015) show that decoupling was clearly weaker than initially proposed. Extension of the study period up to 2019, and novel analysis of trends in fire types and fire intensity strengthened this conclusion. Therefore, the role of deforestation as a driver of fire activity in the region should not be underestimated and must be taken into account when implementing measures to protect the Amazon forest.
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Affiliation(s)
- R Libonati
- Departamento de Meteorologia, Instituto de Geociências, Universidade Federal do Rio de Janeiro, Rio de Janeiro, 21941-916, Brazil.
- Centro de Estudos Florestais, Instituto Superior de Agronomia, Universidade de Lisboa, 1349-017, Lisboa, Portugal.
- Instituto Dom Luiz, Universidade de Lisboa, 1749-016, Lisboa, Portugal.
| | - J M C Pereira
- Centro de Estudos Florestais, Instituto Superior de Agronomia, Universidade de Lisboa, 1349-017, Lisboa, Portugal
| | - C C Da Camara
- Instituto Dom Luiz, Universidade de Lisboa, 1749-016, Lisboa, Portugal
| | - L F Peres
- Departamento de Meteorologia, Instituto de Geociências, Universidade Federal do Rio de Janeiro, Rio de Janeiro, 21941-916, Brazil
- Instituto Português do Mar e da Atmosfera, 1749-077, Lisboa, Portugal
| | - D Oom
- Centro de Estudos Florestais, Instituto Superior de Agronomia, Universidade de Lisboa, 1349-017, Lisboa, Portugal
| | - J A Rodrigues
- Departamento de Meteorologia, Instituto de Geociências, Universidade Federal do Rio de Janeiro, Rio de Janeiro, 21941-916, Brazil
| | - F L M Santos
- Departamento de Meteorologia, Instituto de Geociências, Universidade Federal do Rio de Janeiro, Rio de Janeiro, 21941-916, Brazil
| | - R M Trigo
- Departamento de Meteorologia, Instituto de Geociências, Universidade Federal do Rio de Janeiro, Rio de Janeiro, 21941-916, Brazil
- Instituto Dom Luiz, Universidade de Lisboa, 1749-016, Lisboa, Portugal
| | - C M P Gouveia
- Instituto Dom Luiz, Universidade de Lisboa, 1749-016, Lisboa, Portugal
- Instituto Português do Mar e da Atmosfera, 1749-077, Lisboa, Portugal
| | - F Machado-Silva
- Departamento de Meteorologia, Instituto de Geociências, Universidade Federal do Rio de Janeiro, Rio de Janeiro, 21941-916, Brazil
- Programa de Geociências (Geoquímica Ambiental), Instituto de Química, Universidade Federal Fluminense, Niterói, 24020-141, Brazil
| | - A Enrich-Prast
- Departamento de Meteorologia, Instituto de Geociências, Universidade Federal do Rio de Janeiro, Rio de Janeiro, 21941-916, Brazil
- Department of Thematic Studies-Environmental Change, Linköping University, 58183, Linköping, Sweden
| | - J M N Silva
- Centro de Estudos Florestais, Instituto Superior de Agronomia, Universidade de Lisboa, 1349-017, Lisboa, Portugal
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