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Reiter K, Plutzar C, Moser D, Semenchuk P, Erb K, Essl F, Gattringer A, Haberl H, Krausmann F, Lenzner B, Wessely J, Matej S, Pouteau R, Dullinger S. Human appropriation of net primary production as driver of change in landscape-scale vertebrate richness. Glob Ecol Biogeogr 2023; 32:855-866. [PMID: 38504954 PMCID: PMC10946509 DOI: 10.1111/geb.13671] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Revised: 02/16/2023] [Accepted: 02/26/2023] [Indexed: 03/21/2024]
Abstract
Aim Land use is the most pervasive driver of biodiversity loss. Predicting its impact on species richness (SR) is often based on indicators of habitat loss. However, the degradation of habitats, especially through land-use intensification, also affects species. Here, we evaluate whether an integrative metric of land-use intensity, the human appropriation of net primary production, is correlated with the decline of SR in used landscapes across the globe. Location Global. Time period Present. Major taxa studied Birds, mammals and amphibians. Methods Based on species range maps (spatial resolution: 20 km × 20 km) and an area-of-habitat approach, we calibrated a "species-energy model" by correlating the SR of three groups of vertebrates with net primary production and biogeographical covariables in "wilderness" areas (i.e., those where available energy is assumed to be still at pristine levels). We used this model to project the difference between pristine SR and the SR corresponding to the energy remaining in used landscapes (i.e., SR loss expected owing to human energy extraction outside wilderness areas). We validated the projected species loss by comparison with the realized and impending loss reconstructed from habitat conversion and documented by national Red Lists. Results Species-energy models largely explained landscape-scale variation of mapped SR in wilderness areas (adjusted R 2-values: 0.79-0.93). Model-based projections of SR loss were lower, on average, than reconstructed and documented ones, but the spatial patterns were correlated significantly, with stronger correlation in mammals (Pearson's r = 0.68) than in amphibians (r = 0.60) and birds (r = 0.57). Main conclusions Our results suggest that the human appropriation of net primary production is a useful indicator of heterotrophic species loss in used landscapes, hence we recommend its inclusion in models based on species-area relationships to improve predictions of land-use-driven biodiversity loss.
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Affiliation(s)
- Karina Reiter
- Department of Botany and Biodiversity ResearchUniversity of ViennaViennaAustria
- Advancing Systems AnalysisInternational Institute for Applied Systems Analysis (IIASA)LaxenburgAustria
| | - Christoph Plutzar
- Institute of Social Ecology (SEC)University of Natural Resources and Life Science (BOKU)ViennaAustria
| | - Dietmar Moser
- Department of Botany and Biodiversity ResearchUniversity of ViennaViennaAustria
| | - Philipp Semenchuk
- Department of Botany and Biodiversity ResearchUniversity of ViennaViennaAustria
| | - Karl‐Heinz Erb
- Institute of Social Ecology (SEC)University of Natural Resources and Life Science (BOKU)ViennaAustria
| | - Franz Essl
- Department of Botany and Biodiversity ResearchUniversity of ViennaViennaAustria
| | - Andreas Gattringer
- Department of Botany and Biodiversity ResearchUniversity of ViennaViennaAustria
| | - Helmut Haberl
- Institute of Social Ecology (SEC)University of Natural Resources and Life Science (BOKU)ViennaAustria
| | - Fridolin Krausmann
- Institute of Social Ecology (SEC)University of Natural Resources and Life Science (BOKU)ViennaAustria
| | - Bernd Lenzner
- Department of Botany and Biodiversity ResearchUniversity of ViennaViennaAustria
| | - Johannes Wessely
- Department of Botany and Biodiversity ResearchUniversity of ViennaViennaAustria
| | - Sarah Matej
- Institute of Social Ecology (SEC)University of Natural Resources and Life Science (BOKU)ViennaAustria
| | - Robin Pouteau
- French National Research Institute for Sustainable Development (IRD), AMAP Lab, France & RéunionMarseilleFrance
| | - Stefan Dullinger
- Department of Botany and Biodiversity ResearchUniversity of ViennaViennaAustria
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2
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Meyer JY, Pouteau R, Vincent F. Assessing habitat suitability for the translocation of Ochrosia tahitensis (Apocynaceae), a critically endangered endemic plant from the island of Tahiti (South Pacific). J Nat Conserv 2022. [DOI: 10.1016/j.jnc.2022.126198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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3
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Yang Q, Weigelt P, Fristoe TS, Zhang Z, Kreft H, Stein A, Seebens H, Dawson W, Essl F, König C, Lenzner B, Pergl J, Pouteau R, Pyšek P, Winter M, Ebel AL, Fuentes N, Giehl ELH, Kartesz J, Krestov P, Kukk T, Nishino M, Kupriyanov A, Villaseñor JL, Wieringa JJ, Zeddam A, Zykova E, van Kleunen M. The global loss of floristic uniqueness. Nat Commun 2021; 12:7290. [PMID: 34911960 PMCID: PMC8674287 DOI: 10.1038/s41467-021-27603-y] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Accepted: 11/30/2021] [Indexed: 12/03/2022] Open
Abstract
Regional species assemblages have been shaped by colonization, speciation and extinction over millions of years. Humans have altered biogeography by introducing species to new ranges. However, an analysis of how strongly naturalized plant species (i.e. alien plants that have established self-sustaining populations) affect the taxonomic and phylogenetic uniqueness of regional floras globally is still missing. Here, we present such an analysis with data from native and naturalized alien floras in 658 regions around the world. We find strong taxonomic and phylogenetic floristic homogenization overall, and that the natural decline in floristic similarity with increasing geographic distance is weakened by naturalized species. Floristic homogenization increases with climatic similarity, which emphasizes the importance of climate matching in plant naturalization. Moreover, floristic homogenization is greater between regions with current or past administrative relationships, indicating that being part of the same country as well as historical colonial ties facilitate floristic exchange, most likely due to more intensive trade and transport between such regions. Our findings show that naturalization of alien plants threatens taxonomic and phylogenetic uniqueness of regional floras globally. Unless more effective biosecurity measures are implemented, it is likely that with ongoing globalization, even the most distant regions will lose their floristic uniqueness.
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Affiliation(s)
- Qiang Yang
- Ecology, Department of Biology, University of Konstanz, Konstanz, Germany.
| | - Patrick Weigelt
- grid.7450.60000 0001 2364 4210Biodiversity, Macroecology & Biogeography, University of Göttingen, Göttingen, Germany ,Campus-Institut Data Science, Göttingen, Germany
| | - Trevor S. Fristoe
- grid.9811.10000 0001 0658 7699Ecology, Department of Biology, University of Konstanz, Konstanz, Germany
| | - Zhijie Zhang
- grid.9811.10000 0001 0658 7699Ecology, Department of Biology, University of Konstanz, Konstanz, Germany
| | - Holger Kreft
- grid.7450.60000 0001 2364 4210Biodiversity, Macroecology & Biogeography, University of Göttingen, Göttingen, Germany ,grid.7450.60000 0001 2364 4210Centre of Biodiversity and Sustainable Land Use, University of Goettingen, Göttingen, Germany
| | - Anke Stein
- grid.9811.10000 0001 0658 7699Ecology, Department of Biology, University of Konstanz, Konstanz, Germany
| | - Hanno Seebens
- grid.507705.0Senckenberg Biodiversity and Climate Research Centre, Frankfurt, Germany
| | - Wayne Dawson
- grid.8250.f0000 0000 8700 0572Department of Biosciences, Durham University, Durham, UK
| | - Franz Essl
- grid.10420.370000 0001 2286 1424Bioinvasions, Global Change, Macroecology Group, Department of Botany and Biodiversity Research, University of Vienna, Vienna, Austria
| | - Christian König
- grid.11348.3f0000 0001 0942 1117Ecology and Macroecology group, University of Potsdam, Potsdam, Germany
| | - Bernd Lenzner
- grid.10420.370000 0001 2286 1424Bioinvasions, Global Change, Macroecology Group, Department of Botany and Biodiversity Research, University of Vienna, Vienna, Austria
| | - Jan Pergl
- grid.424923.a0000 0001 2035 1455Czech Academy of Sciences, Institute of Botany, Department of Invasion Ecology, Průhonice, Czech Republic
| | - Robin Pouteau
- grid.4399.70000000122879528AMAP, Univ Montpellier, CIRAD, CNRS, INRAE, IRD, Montpellier, France
| | - Petr Pyšek
- grid.424923.a0000 0001 2035 1455Czech Academy of Sciences, Institute of Botany, Department of Invasion Ecology, Průhonice, Czech Republic ,grid.4491.80000 0004 1937 116XDepartment of Ecology, Faculty of Science, Charles University, Prague, Czech Republic
| | - Marten Winter
- grid.421064.50000 0004 7470 3956German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Leipzig, Germany
| | - Aleksandr L. Ebel
- grid.77602.340000 0001 1088 3909Department of Botany, Tomsk State University, Tomsk, Russia ,grid.415877.80000 0001 2254 1834Central Siberian Botanical Garden, Siberian Branch of Russian Academy of Sciences, Novosibirsk, Russia
| | - Nicol Fuentes
- grid.5380.e0000 0001 2298 9663Departamento de Botánica, Facultad de Ciencias Naturales y Oceanograficas, Universidad de Concepción, Concepción, Chile
| | - Eduardo L. H. Giehl
- grid.411237.20000 0001 2188 7235Departamento de Ecologia e Zoologia, Federal University of Santa Catarina, Florianópolis, Brazil
| | - John Kartesz
- Biota of North America Program, Chapel Hill, NC USA
| | - Pavel Krestov
- grid.417808.20000 0001 1393 1398Botanical Garden-Institute FEB RAS, Vladivostok, Russia
| | - Toomas Kukk
- grid.16697.3f0000 0001 0671 1127Institute of Agricultural and Environmental Sciences, Estonian University of Life Sciences, Tartu, Estonia
| | | | - Andrey Kupriyanov
- grid.415877.80000 0001 2254 1834Institute of Human Ecology, Siberian Branch of Russian Academy of Sciences, Kemerovo, Russia
| | - Jose Luis Villaseñor
- grid.9486.30000 0001 2159 0001Departamento de Botánica, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - Jan J. Wieringa
- grid.425948.60000 0001 2159 802XNaturalis Biodiversity Centre, Leiden, The Netherlands
| | - Abida Zeddam
- Ingenieur en Ecologie vegetale, Algiers, Algeria
| | - Elena Zykova
- grid.415877.80000 0001 2254 1834Central Siberian Botanical Garden, Siberian Branch of Russian Academy of Sciences, Novosibirsk, Russia
| | - Mark van Kleunen
- grid.9811.10000 0001 0658 7699Ecology, Department of Biology, University of Konstanz, Konstanz, Germany ,grid.440657.40000 0004 1762 5832Zhejiang Provincial Key Laboratory of Plant Evolutionary Ecology and Conservation, Taizhou University, Taizhou, China
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Pouteau R, Brunel C, Dawson W, Essl F, Kreft H, Lenzner B, Meyer C, Pergl J, Pyšek P, Seebens H, Weigelt P, Winter M, Kleunen M. Environmental and socioeconomic correlates of extinction risk in endemic species. DIVERS DISTRIB 2021. [DOI: 10.1111/ddi.13438] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Affiliation(s)
- Robin Pouteau
- Zhejiang Provincial Key Laboratory of Plant Evolutionary Ecology and Conservation Taizhou University Taizhou China
- AMAP IRD CNRS CIRAD INRA Univ Montpellier Montpellier France
| | - Caroline Brunel
- Zhejiang Provincial Key Laboratory of Plant Evolutionary Ecology and Conservation Taizhou University Taizhou China
| | - Wayne Dawson
- Department of Biosciences Durham University Durham UK
| | - Franz Essl
- BioInvasions, Global Change, Macroecology‐Group Department of Botany and Biodiversity Research University of Vienna Vienna Austria
| | - Holger Kreft
- Biodiversity, Macroecology & Biogeography University of Goettingen Göttingen Germany
- Centre of Biodiversity and Sustainable Land Use (CBL) University of Goettingen Göttingen Germany
| | - Bernd Lenzner
- BioInvasions, Global Change, Macroecology‐Group Department of Botany and Biodiversity Research University of Vienna Vienna Austria
| | - Carsten Meyer
- German Centre for Integrative Biodiversity Research (iDiv) Halle‐Jena‐Leipzig Leipzig Germany
- Institute of Biology Leipzig University Leipzig Germany
- Institute for Geosciences and Geography Martin Luther University Halle‐Wittenberg Halle (Saale) Germany
| | - Jan Pergl
- Institute of Botany Department of Invasion Ecology Czech Academy of Sciences Průhonice Czech Republic
| | - Petr Pyšek
- Institute of Botany Department of Invasion Ecology Czech Academy of Sciences Průhonice Czech Republic
- Department of Ecology Faculty of Science Charles University Prague 2 Czech Republic
| | - Hanno Seebens
- Senckenberg Biodiversity and Climate Research Centre Frankfurt am Main Germany
| | - Patrick Weigelt
- Biodiversity, Macroecology & Biogeography University of Goettingen Göttingen Germany
- Campus‐Institut Data Science Göttingen Germany
| | - Marten Winter
- German Centre for Integrative Biodiversity Research (iDiv) Halle‐Jena‐Leipzig Leipzig Germany
| | - Mark Kleunen
- Zhejiang Provincial Key Laboratory of Plant Evolutionary Ecology and Conservation Taizhou University Taizhou China
- Department of Biology University of Konstanz Konstanz Germany
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5
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Wan J, Wang C, Zimmermann NE, Li M, Pouteau R, Yu F. Current and future plant invasions in protected areas: Does clonality matter? DIVERS DISTRIB 2021. [DOI: 10.1111/ddi.13425] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Affiliation(s)
- Ji‐Zhong Wan
- Institute of Wetland Ecology & Clone Ecology Zhejiang Provincial Key Laboratory of Plant Evolutionary Ecology and Conservation Taizhou University Taizhou China
- State Key Laboratory of Plateau Ecology and Agriculture Qinghai University Xining China
- Department of Ecology Pontifical University Catholic of Chile Santiago Chile
- Instituto de Ecología y Biodiversidad (IEB) Santiago Chile
| | - Chun‐Jing Wang
- Institute of Wetland Ecology & Clone Ecology Zhejiang Provincial Key Laboratory of Plant Evolutionary Ecology and Conservation Taizhou University Taizhou China
- State Key Laboratory of Plateau Ecology and Agriculture Qinghai University Xining China
| | - Niklaus E. Zimmermann
- Swiss Federal Research Institute WSL Birmensdorf Switzerland
- Department of Environmental Systems Science Swiss Federal Institute of Technology ETH Zurich Switzerland
| | - Mai‐He Li
- Swiss Federal Research Institute WSL Birmensdorf Switzerland
| | - Robin Pouteau
- Institute of Wetland Ecology & Clone Ecology Zhejiang Provincial Key Laboratory of Plant Evolutionary Ecology and Conservation Taizhou University Taizhou China
| | - Fei‐Hai Yu
- Institute of Wetland Ecology & Clone Ecology Zhejiang Provincial Key Laboratory of Plant Evolutionary Ecology and Conservation Taizhou University Taizhou China
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6
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Pouteau R, Biurrun I, Brunel C, Chytrý M, Dawson W, Essl F, Fristoe T, Haveman R, Hobohm C, Jansen F, Kreft H, Lenoir J, Lenzner B, Meyer C, Moeslund JE, Pergl J, Pyšek P, Svenning J, Thuiller W, Weigelt P, Wohlgemuth T, Yang Q, van Kleunen M. Potential alien ranges of European plants will shrink in the future, but less so for already naturalized than for not yet naturalized species. DIVERS DISTRIB 2021. [DOI: 10.1111/ddi.13378] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Affiliation(s)
- Robin Pouteau
- Zhejiang Provincial Key Laboratory of Plant Evolutionary Ecology and Conservation Taizhou University Taizhou China
- AMAP, Univ. Montpellier IRD CIRAD CNRS INRAMontpellier Cedex 05 France
| | - Idoia Biurrun
- Department of Plant Biology and Ecology Faculty of Science and Technology University of the Basque Country UPV/EHU Bilbao Spain
| | - Caroline Brunel
- Zhejiang Provincial Key Laboratory of Plant Evolutionary Ecology and Conservation Taizhou University Taizhou China
- IRDIPME Montpellier France
| | - Milan Chytrý
- Department of Botany and Zoology Faculty of Science Masaryk University Brno Czech Republic
| | - Wayne Dawson
- Department of Biosciences Durham University Durham UK
| | - Franz Essl
- Bioinvasions, Global Change, Macroecology Group Department of Botany and Biodiversity Research University of Vienna Vienna Austria
| | - Trevor Fristoe
- Ecology Department of Biology University of Konstanz Konstanz Germany
| | - Rense Haveman
- Central Government Real Estate Agency of the Dutch Ministry of the Interior and Kingdom Relations, Exterior Space Nature Department Wageningen The Netherlands
| | - Carsten Hobohm
- Ecology and Environmental Education Working Group University of Flensburg (EUF) Flensburg Germany
| | - Florian Jansen
- Faculty of Agricultural and Environmental Sciences University of Rostock Rostock Germany
| | - Holger Kreft
- Biodiversity, Macroecology & Biogeography University of Göttingen Göttingen Germany
- Centre of Biodiversity and Sustainable Land Use (CBL) University of Göttingen Germany
| | - Jonathan Lenoir
- UR “Ecologie et Dynamique des Systèmes Anthropisés” (EDYSAN UMR 7058 CNRS) Université de Picardie Jules Verne Amiens Cedex 1 France
| | - Bernd Lenzner
- Bioinvasions, Global Change, Macroecology Group Department of Botany and Biodiversity Research University of Vienna Vienna Austria
| | - Carsten Meyer
- German Centre for Integrative Biodiversity Research (iDiv) Halle‐Jena‐Leipzig Leipzig Germany
- Institute of Biology Leipzig University Leipzig Germany
- Institute for Geosciences and Geography Martin Luther University Halle‐Wittenberg Halle (Saale) Germany
| | | | - Jan Pergl
- Institute of Botany Department of Invasion Ecology Czech Academy of Sciences Průhonice Czech Republic
| | - Petr Pyšek
- Institute of Botany Department of Invasion Ecology Czech Academy of Sciences Průhonice Czech Republic
- Department of Ecology Faculty of Science Charles University Prague Czech Republic
| | - Jens‐Christian Svenning
- Center for Biodiversity Dynamics in a Changing World (BIOCHANGE) and Section for Ecoinformatics and Biodiversity, Department of Biology Aarhus University Aarhus C Denmark
| | - Wilfried Thuiller
- Univ. Grenoble Alpes Univ. Savoie Mont Blanc, CNRS, LECA Grenoble France
| | - Patrick Weigelt
- Biodiversity, Macroecology & Biogeography University of Göttingen Göttingen Germany
- Campus Institute Data Science Göttingen Germany
| | - Thomas Wohlgemuth
- Swiss Federal Institute for Forest, Snow and Landscape Research WSL Birmensdorf Switzerland
| | - Qiang Yang
- Ecology Department of Biology University of Konstanz Konstanz Germany
| | - Mark van Kleunen
- Zhejiang Provincial Key Laboratory of Plant Evolutionary Ecology and Conservation Taizhou University Taizhou China
- Ecology Department of Biology University of Konstanz Konstanz Germany
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7
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Ismail SA, Pouteau R, van Kleunen M, Maurel N, Kueffer C. Horticultural plant use as a so‐far neglected pillar of ex situ conservation. Conserv Lett 2021. [DOI: 10.1111/conl.12825] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Affiliation(s)
- Sascha A. Ismail
- Institute for Landscape and Open Space (ILF) Eastern Switzerland University of Applied Sciences Rapperswil Switzerland
- Swiss Federal Research Institute WSL Birmensdorf Switzerland
- Swiss Academy of Sciences Bern Switzerland
| | - Robin Pouteau
- AMAP, University of Montpellier, CIRAD, CNRS, INRAE IRD Montpellier France
- Zhejiang Provincial Key Laboratory of Plant Evolutionary Ecology and Conservation Taizhou University Taizhou China
| | - Mark van Kleunen
- Zhejiang Provincial Key Laboratory of Plant Evolutionary Ecology and Conservation Taizhou University Taizhou China
- Ecology, Department of Biology University of Konstanz Konstanz Germany
| | - Noëlie Maurel
- Ecology, Department of Biology University of Konstanz Konstanz Germany
| | - Christoph Kueffer
- Institute for Landscape and Open Space (ILF) Eastern Switzerland University of Applied Sciences Rapperswil Switzerland
- Department of Environmental Systems Science, Institute of Integrative Biology ETH Zurich Zurich Switzerland
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Pillon Y, Jaffré T, Birnbaum P, Bruy D, Cluzel D, Ducousso M, Fogliani B, Ibanez T, Jourdan H, Lagarde L, Léopold A, Munzinger J, Pouteau R, Read J, Isnard S. Infertile landscapes on an old oceanic island: the biodiversity hotspot of New Caledonia. Biol J Linn Soc Lond 2020. [DOI: 10.1093/biolinnean/blaa146] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Abstract
The OCBIL theory comprises a set of hypotheses to comprehend the biota of old, climatically buffered, infertile landscapes (OCBILs). Here, we review evidence from the literature to evaluate the extent to which this theory could apply to the biodiversity hotspot of New Caledonia. We present geological, pedological and climatic evidence suggesting how the island might qualify as an OCBIL. The predictions of OCBIL theory are then reviewed in the context of New Caledonia. There is evidence for a high rate of micro-endemism, accumulation of relict lineages, a high incidence of dioecy, myrmecochory and nutritional specializations in plants. New Caledonian vegetation also exhibits several types of monodominant formations that reveal the importance of disturbances on the island. Fires and tropical storms are likely to be important factors that contribute to the dynamic of New Caledonian ecosystems. Although naturally infertile, there is archaeological evidence that humans developed specific horticultural practices in the ultramafic landscapes of New Caledonia. Further comparisons between New Caledonia and other areas of the world, such as South Africa and Southwest Australia, are desirable, to develop the OCBIL theory into a more robust and generalized, testable framework and to determine the most efficient strategies to preserve their outstanding biodiversity.
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Affiliation(s)
- Yohan Pillon
- LSTM, IRD, INRAE, CIRAD, Institut Agro, Univ Montpellier, Montpellier, France
| | - Tanguy Jaffré
- AMAP, Univ Montpellier, IRD, CIRAD, CNRS, INRAE, Montpellier, France
- AMAP, IRD, CIRAD, Herbier de la Nouvelle-Calédonie, Nouméa, New Caledonia
| | - Philippe Birnbaum
- AMAP, Univ Montpellier, IRD, CIRAD, CNRS, INRAE, Montpellier, France
- AMAP, IRD, CIRAD, Herbier de la Nouvelle-Calédonie, Nouméa, New Caledonia
- Institut Agronomique Néo-Calédonien (IAC), équipe SolVeg, Nouméa, New Caledonia
| | - David Bruy
- AMAP, Univ Montpellier, IRD, CIRAD, CNRS, INRAE, Montpellier, France
- AMAP, IRD, CIRAD, Herbier de la Nouvelle-Calédonie, Nouméa, New Caledonia
| | - Dominique Cluzel
- ISEA, Université de la Nouvelle-Calédonie, Nouméa, New Caledonia
| | - Marc Ducousso
- LSTM, IRD, INRAE, CIRAD, Institut Agro, Univ Montpellier, Montpellier, France
| | - Bruno Fogliani
- ISEA, Université de la Nouvelle-Calédonie, Nouméa, New Caledonia
| | - Thomas Ibanez
- Department of Biology, University of Hawai′i at Hilo, Hilo, HI, USA
| | - Hervé Jourdan
- IMBE, Aix Marseille Université, CNRS, IRD, Avignon Université, Nouméa, New Caledonia
| | - Louis Lagarde
- TROCA, Université de la Nouvelle-Calédonie, Nouméa, New Caledonia
| | - Audrey Léopold
- Institut Agronomique Néo-Calédonien (IAC), équipe SolVeg, Nouméa, New Caledonia
| | - Jérôme Munzinger
- AMAP, Univ Montpellier, IRD, CIRAD, CNRS, INRAE, Montpellier, France
| | - Robin Pouteau
- AMAP, Univ Montpellier, IRD, CIRAD, CNRS, INRAE, Montpellier, France
| | - Jennifer Read
- School of Biological Sciences, Monash University, Victoria, Australia
| | - Sandrine Isnard
- AMAP, Univ Montpellier, IRD, CIRAD, CNRS, INRAE, Montpellier, France
- AMAP, IRD, CIRAD, Herbier de la Nouvelle-Calédonie, Nouméa, New Caledonia
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Brunel C, Pouteau R, Dawson W, Pester M, Ramirez KS, van Kleunen M. Towards Unraveling Macroecological Patterns in Rhizosphere Microbiomes. Trends Plant Sci 2020; 25:1017-1029. [PMID: 32467065 DOI: 10.1016/j.tplants.2020.04.015] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2019] [Revised: 04/18/2020] [Accepted: 04/28/2020] [Indexed: 05/26/2023]
Abstract
It is generally accepted that plants locally influence the composition and activity of their rhizosphere microbiome, and that rhizosphere community assembly further involves a hierarchy of constraints with varying strengths across spatial and temporal scales. However, our knowledge of rhizosphere microbiomes is largely based on single-location and time-point studies. Consequently, it remains difficult to predict patterns at large landscape scales, and we lack a clear understanding of how the rhizosphere microbiome forms and is maintained by drivers beyond the influence of the plant. By synthesizing recent literature and collating data on rhizosphere microbiomes, we point out the opportunities and challenges offered by advances in molecular biology, bioinformatics, and data availability. Specifically, we highlight the use of exact sequence variants, coupled with existing and newly generated data to decipher the rules of rhizosphere community assembly across large spatial and taxonomic scales.
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Affiliation(s)
- Caroline Brunel
- Zhejiang Provincial Key Laboratory of Plant Evolutionary Ecology and Conservation, Taizhou University, 318000 Taizhou, China; IRD, IPME, 911 Avenue Agropolis, BP 64501, 34394, Montpellier, France.
| | - Robin Pouteau
- Zhejiang Provincial Key Laboratory of Plant Evolutionary Ecology and Conservation, Taizhou University, 318000 Taizhou, China; AMAP, IRD, CNRS, CIRAD, INRA, Université de Montpellier, 34398 Montpellier Cedex 05, France
| | - Wayne Dawson
- Department of Biosciences, Durham University, Durham, DH1 3LE, UK
| | - Michael Pester
- Leibniz Institute DSMZ - German Collection of Microorganisms and Cell Cultures, Inhoffenstr. 7B, D-38124 Braunschweig, Germany; Technical University of Braunschweig, Institute for Microbiology, Spielmannstrasse 7, 38106 Braunschweig, Germany
| | - Kelly S Ramirez
- Netherlands Institute of Ecology, Droevendaalsesteeg 10, 6708, PB, Wageningen, The Netherlands; University of Texas at El Paso, Department of Biological Sciences, 500 W University Ave, El Paso, TX 79968, USA
| | - Mark van Kleunen
- Zhejiang Provincial Key Laboratory of Plant Evolutionary Ecology and Conservation, Taizhou University, 318000 Taizhou, China; Department of Biology, University of Konstanz, 78464 Konstanz, Germany
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Wan J, Oduor AMO, Pouteau R, Wang B, Chen L, Yang B, Yu F, Li J. Can polyploidy confer invasive plants with a wider climatic tolerance? A test using Solidago canadensis. Ecol Evol 2020; 10:5617-5630. [PMID: 32607178 PMCID: PMC7319170 DOI: 10.1002/ece3.6303] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2019] [Revised: 03/25/2020] [Accepted: 03/30/2020] [Indexed: 02/05/2023] Open
Abstract
Polyploidy can cause variation in plant functional traits and thereby generate individuals that can adapt to fluctuating environments and exploit new environments. However, few empirical studies have tested for an association between ploidy level and climatic tolerance of invasive cytotypes relative to conspecific native-range cytotypes. Here, we used an invasive plant Solidago canadensis to test whether invasive populations had a higher proportion of polyploids, greater height and stem-base diameter, and occupied a wider range of climatic conditions than conspecific native-range populations. We also tested whether the invasive populations had overcome genetic founder effects. We sampled a total of 80 populations in parts of the invaded range in China and native range in North America for in situ measurements of plant height and stem-base diameter in the field and for population genetic and cytotype analyses. To examine climatic correlates, we augmented our field-sampled data with occurrence records obtained from Global Biodiversity Information Facility. All, except one, of the populations that we sampled in China occurred in a humid subtropical climate. In contrast, the North American populations occurred in humid continental, humid subtropical, and semi-arid climatic zones. All populations of S. canadensis in China were purely hexaploid, while the North American populations were diploid, tetraploid, and hexaploid. The invasive hexaploids were significantly taller and had a larger stem-base diameter than native hexaploids. Native hexaploids were significantly taller and had larger stem-base diameter than native diploids. Climatic correlate assessment found that invasive and native populations occupied different climatic envelopes, with invasive populations occurring in warmer and less seasonal climates than native populations. However, there was no significant correlation between ploidy level and climatic envelope of S. canadensis. Molecular phylogeography data suggest reduced genetic founder effects in the invaded range. Overall, these results suggest that polyploidy does not influence S. canadensis climatic tolerance.
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Affiliation(s)
- Jizhong Wan
- Zhejing Provincial Key Laboratory of Plant Evolutionary Ecology and ConservationTaizhou UniversityTaizhouP.R. China
- State Key Laboratory of Plateau Ecology and AgricultureQinghai UniversityXiningP.R. China
| | - Ayub M. O. Oduor
- Zhejing Provincial Key Laboratory of Plant Evolutionary Ecology and ConservationTaizhou UniversityTaizhouP.R. China
- Department of Applied BiologyTechnical University of KenyaNairobiKenya
| | - Robin Pouteau
- Zhejing Provincial Key Laboratory of Plant Evolutionary Ecology and ConservationTaizhou UniversityTaizhouP.R. China
| | - Beilei Wang
- Zhejing Provincial Key Laboratory of Plant Evolutionary Ecology and ConservationTaizhou UniversityTaizhouP.R. China
| | - Luxi Chen
- Zhejing Provincial Key Laboratory of Plant Evolutionary Ecology and ConservationTaizhou UniversityTaizhouP.R. China
| | - Beifen Yang
- Zhejing Provincial Key Laboratory of Plant Evolutionary Ecology and ConservationTaizhou UniversityTaizhouP.R. China
| | - Feihai Yu
- Zhejing Provincial Key Laboratory of Plant Evolutionary Ecology and ConservationTaizhou UniversityTaizhouP.R. China
| | - Junmin Li
- Zhejing Provincial Key Laboratory of Plant Evolutionary Ecology and ConservationTaizhou UniversityTaizhouP.R. China
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Brunel C, Beifen Y, Pouteau R, Li J, van Kleunen M. Responses of Rhizospheric Microbial Communities of Native and Alien Plant Species to Cuscuta Parasitism. Microb Ecol 2020; 79:617-630. [PMID: 31598761 DOI: 10.1007/s00248-019-01438-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2019] [Accepted: 09/03/2019] [Indexed: 06/10/2023]
Abstract
Parasitic plants have major impacts on host fitness. In the case of species of the holoparasitic Cuscuta genus, these impacts were shown to be particularly strong in some invasive alien plants, which has raised interest in the underlying mechanism. We hypothesized that Cuscuta parasitization may exert strong influence in shaping the diversity patterns in the host rhizosphere microbiome and that this may vary between native (coevolved) and alien (non-coevolved) plants. Here, we report on a field study exploring the effect of parasitization by Cuscuta australis on the rhizosphere microbiota (16S and ITS rDNA) of four plant species sharing and three plant species not sharing the parasite's native range. Despite a predominant role of the host species in shaping the rhizosphere microbiota, the role of host origin and of parasitization still appeared important in structuring microbial communities and their associated functions. Bacterial communities were more strongly influenced than fungi by the native range of the host plant, while fungi were slightly more affected than bacteria by parasitization. About 7% of bacterial phylotypes and 11% of fungal phylotypes were sensitive to Cuscuta parasitization. Parasitization also reduced the abundance of arbuscular mycorrhizal fungi by ca. 18% and of several genes related to plant growth promoting functions (e.g., nitrogen metabolism and quorum sensing). Both fungi and bacteria differentially responded to host parasitization depending on host origin, and the extent of these shifts suggests that they may have more dramatic consequences for alien than for native plants.
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Affiliation(s)
- Caroline Brunel
- Zhejiang Provincial Key Laboratory of Plant Evolutionary Ecology and Conservation, Taizhou University, Taizhou, 318000, China
| | - Yang Beifen
- Zhejiang Provincial Key Laboratory of Plant Evolutionary Ecology and Conservation, Taizhou University, Taizhou, 318000, China
| | - Robin Pouteau
- Zhejiang Provincial Key Laboratory of Plant Evolutionary Ecology and Conservation, Taizhou University, Taizhou, 318000, China
| | - Junmin Li
- Zhejiang Provincial Key Laboratory of Plant Evolutionary Ecology and Conservation, Taizhou University, Taizhou, 318000, China.
| | - Mark van Kleunen
- Zhejiang Provincial Key Laboratory of Plant Evolutionary Ecology and Conservation, Taizhou University, Taizhou, 318000, China
- Department of Biology, University of Konstanz, Universitätsstrasse 10, D-78457, Konstanz, Germany
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Pouteau R, Trueba S, Isnard S. Retracing the contours of the early angiosperm environmental niche. Ann Bot 2020; 125:49-57. [PMID: 31402380 PMCID: PMC6948207 DOI: 10.1093/aob/mcz131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Revised: 05/31/2019] [Accepted: 07/25/2019] [Indexed: 06/10/2023]
Abstract
BACKGROUND AND AIMS Our aim was to understand the environmental conditions of the emergence and radiation of early angiosperms. Such a question has long remained controversial because various approaches applied in the past have drawn conflicting images of early angiosperm ecology. METHODS We provided a new perspective on the question by using support vector machines to model the environmental niche of 51 species belonging to ten genera of extant lineages that diverged early during angiosperm evolution (basal angiosperms). Then, we analysed the resulting pattern of niche overlap and determined whether this pattern deviates from what would be expected on the basis of a null model or whether it might mirror a legacy of a common primitive niche based on a phylogenetic reconstruction. KEY RESULTS The niche of three-quarters of the species and all genera converged towards tropical montane cloud forests (TMCFs). The latitudinal pattern of basal angiosperm richness indeed culminated in the tropics, and the elevational pattern revealed a humpback curve peaking between 2000 m and 3500 m when accounting for the effect of area. At first glance, this diversity pattern does not significantly differ from null predictions. However, we revealed a tendency for the basal-most taxa to occur in TMCFs so that phylogenetic reconstructions indicated that the niche of the common ancestor of the sampled basal angiosperms had a probability of 0.85-0.93 to overlap with TMCFs. CONCLUSIONS Our new approach indicates that the environmental convergence of extant basal angiosperms towards TMCFs would reflect a legacy of an ancestral niche from which the least basal taxa would have diverged following a random pattern under geometric constraints.
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Affiliation(s)
- Robin Pouteau
- Zhejiang Provincial Key Laboratory of Plant Evolutionary Ecology and Conservation, Taizhou University, Taizhou, China
- UMR AMAP, IRD, CIRAD, CNRS, INRA, Montpellier University, Noumea, New Caledonia
| | - Santiago Trueba
- UMR AMAP, IRD, CIRAD, CNRS, INRA, Montpellier University, Noumea, New Caledonia
- School of Forestry and Environmental Studies, Yale University, New Haven, CT 06511, USA
| | - Sandrine Isnard
- UMR AMAP, IRD, CIRAD, CNRS, INRA, Montpellier University, Noumea, New Caledonia
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Pouteau R, Trueba S, Isnard S. Retracing the contours of the early angiosperm environmental niche. Ann Bot 2020; 125:195. [PMID: 31665220 PMCID: PMC7145597 DOI: 10.1093/aob/mcz165] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
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Ibanez T, Blanchard E, Hequet V, Keppel G, Laidlaw M, Pouteau R, Vandrot H, Birnbaum P. High endemism and stem density distinguish New Caledonian from other high-diversity rainforests in the Southwest Pacific. Ann Bot 2018; 121:25-35. [PMID: 29077788 PMCID: PMC5786226 DOI: 10.1093/aob/mcx107] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2017] [Accepted: 08/04/2017] [Indexed: 05/15/2023]
Abstract
BACKGROUND AND AIMS The biodiversity hotspot of New Caledonia is globally renowned for the diversity and endemism of its flora. New Caledonia's tropical rainforests have been reported to have higher stem densities, higher concentrations of relictual lineages and higher endemism than other rainforests. This study investigates whether these aspects differ in New Caledonian rainforests compared to other high-diversity rainforests in the Southwest Pacific. METHODS Plants (with a diameter at breast height ≥10 cm) were surveyed in nine 1-ha rainforest plots across the main island of New Caledonia and compared with 14 1-ha plots in high-diversity rainforests of the Southwest Pacific (in Australia, Fiji, Papua New Guinea and the Solomon Islands). This facilitated a comparison of stem densities, taxonomic composition and diversity, and species turnover among plots and countries. KEY RESULTS The study inventoried 11 280 stems belonging to 335 species (93 species ha-1 on average) in New Caledonia. In comparison with other rainforests in the Southwest Pacific, New Caledonian rainforests exhibited higher stem density (1253 stems ha-1 on average) including abundant palms and tree ferns, with the high abundance of the latter being unparalleled outside New Caledonia. In all plots, the density of relictual species was ≥10 % for both stems and species, with no discernible differences among countries. Species endemism, reaching 89 % on average, was significantly higher in New Caledonia. Overall, species turnover increased with geographical distance, but not among New Caledonian plots. CONCLUSIONS High stem density, high endemism and a high abundance of tree ferns with stem diameters ≥10 cm are therefore unique characteristics of New Caledonian rainforests. High endemism and high spatial species turnover imply that the current system consisting of a few protected areas is inadequate, and that the spatial distribution of plant species needs to be considered to adequately protect the exceptional flora of New Caledonian rainforests.
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Affiliation(s)
- Thomas Ibanez
- Institut Agronomique néo-Calédonien (IAC), Diversité biologique et fonctionnelle des écosystèmes terrestres, Nouméa, New Caledonia
- For correspondence. Email
| | - E Blanchard
- Institut Agronomique néo-Calédonien (IAC), Diversité biologique et fonctionnelle des écosystèmes terrestres, Nouméa, New Caledonia
| | - V Hequet
- Institut de Recherche pour le Développement (IRD), UMR AMAP, Nouméa, New Caledonia
| | - G Keppel
- School of Natural and Built Environments, University of South Australia, GPO, Adelaide, South Australia, Australia
| | - M Laidlaw
- Queensland Herbarium, Department of Science, Information Technology and Innovation, Toowong, Queensland, Australia
| | - R Pouteau
- Institut Agronomique néo-Calédonien (IAC), Diversité biologique et fonctionnelle des écosystèmes terrestres, Nouméa, New Caledonia
| | - H Vandrot
- Institut Agronomique néo-Calédonien (IAC), Diversité biologique et fonctionnelle des écosystèmes terrestres, Nouméa, New Caledonia
| | - P Birnbaum
- Institut Agronomique néo-Calédonien (IAC), Diversité biologique et fonctionnelle des écosystèmes terrestres, Nouméa, New Caledonia
- Cirad, UMR AMAP, Montpellier, France
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Schmitt S, Pouteau R, Justeau D, Boissieu F, Birnbaum P. ssdm
: An
r
package to predict distribution of species richness and composition based on stacked species distribution models. Methods Ecol Evol 2017. [DOI: 10.1111/2041-210x.12841] [Citation(s) in RCA: 85] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Sylvain Schmitt
- Botany and Applied Plant Ecology LaboratoryNew Caledonian Agronomic Institute (IAC) Nouméa New Caledonia
| | - Robin Pouteau
- Botany and Applied Plant Ecology LaboratoryNew Caledonian Agronomic Institute (IAC) Nouméa New Caledonia
| | - Dimitri Justeau
- Botany and Applied Plant Ecology LaboratoryNew Caledonian Agronomic Institute (IAC) Nouméa New Caledonia
| | - Florian Boissieu
- Institute for Sustainable Development (IRD) Noumea New Caledonia
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Trueba S, Pouteau R, Lens F, Feild TS, Isnard S, Olson ME, Delzon S. Vulnerability to xylem embolism as a major correlate of the environmental distribution of rain forest species on a tropical island. Plant Cell Environ 2017; 40:277-289. [PMID: 27862015 DOI: 10.1111/pce.12859] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2016] [Revised: 10/28/2016] [Accepted: 11/01/2016] [Indexed: 05/09/2023]
Abstract
Increases in drought-induced tree mortality are being observed in tropical rain forests worldwide and are also likely to affect the geographical distribution of tropical vegetation. However, the mechanisms underlying the drought vulnerability and environmental distribution of tropical species have been little studied. We measured vulnerability to xylem embolism (P50 ) of 13 woody species endemic to New Caledonia and with different xylem conduit morphologies. We examined the relation between P50 , along with other leaf and xylem functional traits, and a range of habitat variables. Selected species had P50 values ranging between -4.03 and -2.00 MPa with most species falling in a narrow range of resistance to embolism above -2.7 MPa. Embolism vulnerability was significantly correlated with elevation, mean annual temperature and percentage of species occurrences located in rain forest habitats. Xylem conduit type did not explain variation in P50 . Commonly used functional traits such as wood density and leaf traits were not related to embolism vulnerability. Xylem embolism vulnerability stands out among other commonly used functional traits as a major driver of species environmental distribution. Drought-induced xylem embolism vulnerability behaves as a physiological trait closely associated with the habitat occupation of rain forest woody species.
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Affiliation(s)
| | - Robin Pouteau
- Institut Agronomique néo-Calédonien (IAC), Diversité biologique et fonctionnelle des écosystèmes terrestes, 98848, Noumea, New Caledonia
| | - Frederic Lens
- Naturalis Biodiversity Center, Leiden University, PO Box 9517, 2300RA, Leiden, The Netherlands
| | - Taylor S Feild
- Department of Ecology and Evolutionary Biology, Tulane University, New Orleans, LA, 70118, USA
| | | | - Mark E Olson
- Instituto de Biología, Universidad Nacional Autónoma de México, Tercer Circuito s/n de Ciudad Universitaria, México DF, 04510, Mexico
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Larrue S, Daehler CC, Meyer JY, Pouteau R, Voldoire O. Elevational distribution and photosynthetic characteristics of the invasive tree Spathodea campanulata on the island of Tahiti (South Pacific Ocean). NB 2016. [DOI: 10.3897/neobiota.30.8201] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Pouteau R, Bayle É, Blanchard É, Birnbaum P, Cassan JJ, Hequet V, Ibanez T, Vandrot H. Accounting for the indirect area effect in stacked species distribution models to map species richness in a montane biodiversity hotspot. DIVERS DISTRIB 2015. [DOI: 10.1111/ddi.12374] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Affiliation(s)
- Robin Pouteau
- Institut Agronomique néo-Calédonien (IAC); Centre IRD de Nouméa; Noumea New Caledonia
- Institut de Recherche pour le Développement (IRD); Conservatoire des Espaces Naturels; Koohnê (Koné) New Caledonia
| | - Élise Bayle
- Institut de Recherche pour le Développement (IRD); Conservatoire des Espaces Naturels; Koohnê (Koné) New Caledonia
- Direction du Développement Économique et de l'Environnement (DDEE); Koohnê (Koné) Province Nord New Caledonia
| | - Élodie Blanchard
- Institut Agronomique néo-Calédonien (IAC); Centre IRD de Nouméa; Noumea New Caledonia
| | - Philippe Birnbaum
- Institut Agronomique néo-Calédonien (IAC); Centre IRD de Nouméa; Noumea New Caledonia
- Centre de Cooperation Internationale en Recherche Agronomique pour le Développement (CIRAD); Montpellier France
| | - Jean-Jérôme Cassan
- Direction du Développement Économique et de l'Environnement (DDEE); Koohnê (Koné) Province Nord New Caledonia
| | - Vanessa Hequet
- Institut de Recherche pour le Développement (IRD); Centre IRD de Nouméa; Noumea New Caledonia
| | - Thomas Ibanez
- Institut Agronomique néo-Calédonien (IAC); Centre IRD de Nouméa; Noumea New Caledonia
| | - Hervé Vandrot
- Institut Agronomique néo-Calédonien (IAC); Centre IRD de Nouméa; Noumea New Caledonia
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Fourcade F, Pouteau R, Jaffré T, Marmey P. In situ observations of the basal angiosperm Amborella trichopoda reveal a long fruiting cycle overlapping two annual flowering periods. J Plant Res 2015; 128:821-828. [PMID: 26178522 DOI: 10.1007/s10265-015-0744-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2015] [Accepted: 06/08/2015] [Indexed: 06/04/2023]
Abstract
Amborella trichopoda is the sole living angiosperm species belonging to the sister lineage of all other extant flowering plants. In the last decade, the species has been the focus of many phylogenetic, genomic and reproductive biology studies, bringing new highlights regarding the evolution of flowering plants. However, little attention has been paid to in situ A. trichopoda populations, particularly to their fruiting cycle. In this study, an A. trichopoda population was observed during three annual flowering cycles. Individuals and branches were labeled in order to monitor the fruiting cycle precisely, from the flowering stage until the abscission of the fruit. Fruit exocarp was green during the first 9 months following flowering, turned red when the next flowering started a year later then remained on the branch during another year, between fruit ripping and abscission. Presence of fruits with two stages of maturity on shrubs was always noticed. Germination tests showed that seeds acquired their germination capacity 1 year after flowering, when fruits changed color. A. trichopoda's fruiting cycle is a long process overlapping two annual flowering periods. These results introduce a new model for flowering and fruiting cycles. The availability of mature seeds on shrubs for more than 1 year is likely to maximize opportunities to be dispersed, thus promoting the survival of this basal angiosperm.
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Affiliation(s)
- Fanny Fourcade
- Institut de Recherche pour le Développement (IRD), UMR DIADE, 101 Promenade Roger Laroque Anse Vata, BPA5, 98848, Nouméa, New Caledonia
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Birnbaum P, Ibanez T, Pouteau R, Vandrot H, Hequet V, Blanchard E, Jaffré T. Environmental correlates for tree occurrences, species distribution and richness on a high-elevation tropical island. AoB Plants 2015; 7:plv075. [PMID: 26162898 PMCID: PMC4561634 DOI: 10.1093/aobpla/plv075] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2015] [Accepted: 06/27/2015] [Indexed: 05/24/2023]
Abstract
High-elevation tropical islands are ideally suited for examining the factors that determine species distribution, given the complex topographies and climatic gradients that create a wide variety of habitats within relatively small areas. New Caledonia, a megadiverse Pacific archipelago, has long focussed the attention of botanists working on the spatial and environmental ranges of specific groups, but few studies have embraced the entire tree flora of the archipelago. In this study we analyse the distribution of 702 native species of rainforest trees of New Caledonia, belonging to 195 genera and 80 families, along elevation and rainfall gradients on ultramafic (UM) and non-ultramafic (non-UM) substrates. We compiled four complementary data sources: (i) herbarium specimens, (ii) plots, (iii) photographs and (iv) observations, totalling 38 936 unique occurrences distributed across the main island. Compiled into a regular 1-min grid (1.852 × 1.852 km), this dataset covered ∼22 % of the island. The studied rainforest species exhibited high environmental tolerance; 56 % of them were not affiliated to a substrate type and they exhibited wide elevation (average 891 ± 332 m) and rainfall (average 2.2 ± 0.8 m year(-1)) ranges. Conversely their spatial distribution was highly aggregated, which suggests dispersal limitation. The observed species richness was driven mainly by the density of occurrences. However, at the highest elevations or rainfalls, and particularly on UM, the observed richness tends to be lower, independently of the sampling effort. The study highlights the imbalance of the dataset in favour of higher values of rainfall and of elevation. Projected onto a map, under-represented areas are a guide as to where future sampling efforts are most required to complete our understanding of rainforest tree species distribution.
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Affiliation(s)
- Philippe Birnbaum
- CIRAD, UMR 51 AMAP, 34398 Montpellier, France Laboratory of Applied Botany and Plant Ecology, Institut Agronomique néo-Calédonien (IAC), Diversité biologique et fonctionnelle des écosystèmes terrestes, 98848 Noumea, New Caledonia
| | - Thomas Ibanez
- Laboratory of Applied Botany and Plant Ecology, Institut Agronomique néo-Calédonien (IAC), Diversité biologique et fonctionnelle des écosystèmes terrestes, 98848 Noumea, New Caledonia
| | - Robin Pouteau
- Laboratory of Applied Botany and Plant Ecology, Institut Agronomique néo-Calédonien (IAC), Diversité biologique et fonctionnelle des écosystèmes terrestes, 98848 Noumea, New Caledonia Laboratory of Applied Botany and Plant Ecology, Institut de Recherche pour le Développement (IRD), UMR 123 AMAP, 98848 Noumea, New Caledonia
| | - Hervé Vandrot
- Laboratory of Applied Botany and Plant Ecology, Institut Agronomique néo-Calédonien (IAC), Diversité biologique et fonctionnelle des écosystèmes terrestes, 98848 Noumea, New Caledonia
| | - Vanessa Hequet
- Laboratory of Applied Botany and Plant Ecology, Institut de Recherche pour le Développement (IRD), UMR 123 AMAP, 98848 Noumea, New Caledonia
| | - Elodie Blanchard
- Laboratory of Applied Botany and Plant Ecology, Institut Agronomique néo-Calédonien (IAC), Diversité biologique et fonctionnelle des écosystèmes terrestes, 98848 Noumea, New Caledonia
| | - Tanguy Jaffré
- Laboratory of Applied Botany and Plant Ecology, Institut de Recherche pour le Développement (IRD), UMR 123 AMAP, 98848 Noumea, New Caledonia
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