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  The role of climate and plant functional trade-offs in shaping global biome and biodiversity patterns

Reu, B., Proulx, R., Bohn, K., Dyke, J. G., Kleidon, A., Pavlick, R., et al. (2011). The role of climate and plant functional trade-offs in shaping global biome and biodiversity patterns. Global Ecology and Biogeography, 20(4), 570-581. doi:10.1111/j.1466-8238.2010.00621.x.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-000E-DC75-9 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-000E-DC76-7
Genre: Journal Article

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 Creators:
Reu, B.1, Author              
Proulx, R.2, Author              
Bohn, K.1, Author              
Dyke, J. G.3, Author              
Kleidon, A.4, Author              
Pavlick, R.1, Author              
Schmidtlein, S., Author
Affiliations:
1Terrestrial Biosphere, Research Group Biospheric Theory and Modelling, Dr. A. Kleidon, Max Planck Institute for Biogeochemistry, Max Planck Society, escidoc:1497792              
2Research Group Organismic Biogeochemistry, Dr. C. Wirth, Max Planck Institute for Biogeochemistry, Max Planck Society, escidoc:1497764              
3Energy and Earth System, Research Group Biospheric Theory and Modelling, Dr. A. Kleidon, Max Planck Institute for Biogeochemistry, Max Planck Society, escidoc:1497790              
4Research Group Biospheric Theory and Modelling, Dr. A. Kleidon, Max Planck Institute for Biogeochemistry, Max Planck Society, escidoc:1497761              

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Free keywords: Biogeography climate-biodiversity relationship functional diversity functional identity functional richness PFT plant functional traits tolerance hypothesis vegetation model species-richness shoot ratios diversity scale model water communities constraints succession strategies
 Abstract: Aim Two of the oldest observations in plant geography are the increase in plant diversity from the poles towards the tropics and the global geographic distribution of vegetation physiognomy (biomes). The objective of this paper is to use a process-based vegetation model to evaluate the relationship between modelled and observed global patterns of plant diversity and the geographic distribution of biomes. Location The global terrestrial biosphere. Methods We implemented and tested a novel vegetation model aimed at identifying strategies that enable plants to grow and reproduce within particular climatic conditions across the globe. Our model simulates plant survival according to the fundamental ecophysiological processes of water uptake, photosynthesis, reproduction and phenology. We evaluated the survival of an ensemble of 10,000 plant growth strategies across the range of global climatic conditions. For the simulated regional plant assemblages we quantified functional richness, functional diversity and functional identity. Results A strong relationship was found (correlation coefficient of 0.75) between the modelled and the observed plant diversity. Our approach demonstrates that plant functional dissimilarity increases and then saturates with increasing plant diversity. Six of the major Earth biomes were reproduced by clustering grid cells according to their functional identity (mean functional traits of a regional plant assemblage). These biome clusters were in fair agreement with two other global vegetation schemes: a satellite image classification and a biogeography model (kappa statistics around 0.4). Main conclusions Our model reproduces the observed global patterns of plant diversity and vegetation physiognomy from the number and identity of simulated plant growth strategies. These plant growth strategies emerge from the first principles of climatic constraints and plant functional trade-offs. Our study makes important contributions to furthering the understanding of how climate affects patterns of plant diversity and vegetation physiognomy from a process-based rather than a phenomenological perspective.

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Language(s): eng - English
 Dates: 2011
 Publication Status: Published in print
 Pages: -
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 Rev. Method: -
 Identifiers: DOI: 10.1111/j.1466-8238.2010.00621.x
ISI: ://000291391500006
Other: BGC1514
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Title: Global Ecology and Biogeography
Source Genre: Journal
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Publ. Info: Oxford, U.K. : Blackwell Science
Pages: - Volume / Issue: 20 (4) Sequence Number: - Start / End Page: 570 - 581 Identifier: CoNE: http://pubman.mpdl.mpg.de/cone/journals/resource/954925579097