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7 - Predictive Models of Community Assembly

Published online by Cambridge University Press:  18 November 2021

Daniel C. Laughlin
Affiliation:
University of Wyoming
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Summary

The CATS model (Community Assembly by Trait Selection) uses average trait values of both species and communities in a system of linear equations to predict the relative abundance of each species in a community C from the regional species pool P. This model has been tested in a variety of habitats. There is an asymptote to the number of useful traits. The asymptote is determined by the strength of covariation among the traits of the species pool. The Traitspace model uses Bayes’ theorem to combine trait–environment relationships and multidimensional trait distributions for each species to predict the relative abundance of each species in a community C from the regional species pool P. Both models can be used to determine the importance of traits in community assembly. Each model has costs and benefits, which future work will clarify.

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Chapter
Information
A Framework for Community Ecology
Species Pools, Filters and Traits
, pp. 232 - 264
Publisher: Cambridge University Press
Print publication year: 2021

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