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<identifier>oai:HAL:hal-01032424v1</identifier>
<datestamp>2018-01-11</datestamp>
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<publisher>HAL CCSD</publisher>
<title lang=en>Quantifying the importance of local niche-based and stochastic processes to tropical tree community assembly</title>
<creator>Shipley, Bill</creator>
<creator>Paine, C. E. Timothy</creator>
<creator>Baraloto, Christopher</creator>
<contributor>Dept Biol ; Sherbrooke University</contributor>
<contributor>Inst Evolutionary & Environm Studies ; Université de Zürich</contributor>
<contributor>Ecologie des forêts de Guyane (ECOFOG) ; Centre de Coopération Internationale en Recherche Agronomique pour le Développement (CIRAD) - Institut National de la Recherche Agronomique (INRA) - Université des Antilles et de la Guyane (UAG) - AgroParisTech - Centre National de la Recherche Scientifique (CNRS)</contributor>
<contributor>Natural Sciences and Engineering Research Council of Canada (NSERC); Agence National de la Recherche (ANR) of France; U.S. National Science Foundation [DEB 0743103]; INRA</contributor>
<source>ISSN: 0012-9658</source>
<source>Ecology</source>
<publisher>Ecological Society of America</publisher>
<identifier>hal-01032424</identifier>
<identifier>https://hal.archives-ouvertes.fr/hal-01032424</identifier>
<source>https://hal.archives-ouvertes.fr/hal-01032424</source>
<source>Ecology, Ecological Society of America, 2012, 93 (4), pp.760 - 769</source>
<language>en</language>
<subject lang=en>Community Assembly by Trait Selection</subject>
<subject lang=en>CATS</subject>
<subject lang=en>demographic stochasticity</subject>
<subject lang=en>dispersal limitation</subject>
<subject lang=en>environmental filtering</subject>
<subject lang=en>French Guiana</subject>
<subject lang=en>maxent</subject>
<subject lang=en>neutral assembly</subject>
<subject lang=en>tropical forests</subject>
<subject lang=en>MAXIMUM-ENTROPY MODELS</subject>
<subject lang=en>PLANT-COMMUNITIES</subject>
<subject lang=en>FUNCTIONAL TRAITS</subject>
<subject lang=en>SPECIES ABUNDANCE</subject>
<subject lang=en>SPATIAL PROCESSES</subject>
<subject lang=en>AMAZONIAN FOREST</subject>
<subject lang=en>TEMPERATE FOREST</subject>
<subject lang=en>BETA-DIVERSITY</subject>
<subject lang=en>ECOLOGY</subject>
<subject lang=en>BIODIVERSITY</subject>
<subject>[SDV.SA] Life Sciences [q-bio]/Agricultural sciences</subject>
<type>info:eu-repo/semantics/article</type>
<type>Journal articles</type>
<description lang=en>Although niche-based and stochastic processes, including dispersal limitation and demographic stochasticity, can each contribute to community assembly, it is difficult to quantify the relative importance of each process in natural vegetation. Here, we extend Shipley's maxent model (Community Assembly by Trait Selection, CATS) for the prediction of relative abundances to incorporate both trait-based filtering and dispersal limitation from the larger landscape and develop a statistical decomposition of the proportions of the total information content of relative abundances in local communities that are attributable to trait-based filtering, dispersal limitation, and demographic stochasticity. We apply the method to tree communities in a mature, species-rich, tropical forest in French Guiana at 1-, 0.25- and 0.04-ha scales. Trait data consisted of species' means of 17 functional traits measured over both the entire meta-community and separately in each of nine 1-ha plots. Trait means calculated separately for each site always gave better predictions. There was clear evidence of trait-based filtering at all spatial scales. Trait-based filtering was the most important process at the 1-ha scale (34%), whereas demographic stochasticity was the most important at smaller scales (37-53%). Dispersal limitation from the meta-community was less important and approximately constant across scales (similar to 9%), and there was also an unresolved association between site-specific traits and meta-community relative abundances. Our method allows one to quantify the relative importance of local niche-based and meta-community processes and demographic stochasticity during community assembly across spatial and temporal scales.</description>
<date>2012</date>
</dc>
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