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A trait‐based approach to community assembly: partitioning of species trait values into within‐ and among‐community components

Ackerly, D. D., Cornwell, W. K.·2007·Ecology Letters

Abstract

Plant functional traits vary both along environmental gradients and among species occupying similar conditions, creating a challenge for the synthesis of functional and community ecology. We present a trait‐based approach that provides an additive decomposition of species’ trait values into alpha and beta components: beta values refer to a species’ position along a gradient defined by community‐level mean trait values; alpha values are the difference between a species’ trait values and the mean of co‐occurring taxa. In woody plant communities of coastal California, beta trait values for specific leaf area, leaf size, wood density and maximum height all covary strongly, reflecting species distributions across a gradient of soil moisture availability. Alpha values, on the other hand, are generally not significantly correlated, suggesting several independent axes of differentiation within communities. This trait‐based framework provides a novel approach to integrate functional ecology and gradient analysis with community ecology and coexistence theory.

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Crossref · 10.1111/j.1461-0248.2006.01006.x

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Metadata

Authors
Ackerly, D. D., & Cornwell, W. K.
Venue
Ecology Letters
Publisher
Wiley
Published
2007-01-15
Volume
10
Issue
2
Pages
135-145
ISSN
  • 1461-023X (ISSN-L)
  • 1461-0248
OpenAlex
W2111568029
Cited by
781
References
3
FWCI
26.63
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: A trait‐based approach to community assembly: partitioning of species trait values into within‐ and among‐community components. https://app.cochat.ai/papers/10.1111/j.1461-0248.2006.01006.x
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Ackerly, D. D., & Cornwell, W. K. (2007). A trait‐based approach to community assembly: partitioning of species trait values into within‐ and among‐community components. Ecology Letters. https://doi.org/10.1111/j.1461-0248.2006.01006.x

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