Interspecific differences in environmental response blur trait dynamics in classic statistical analyses

McLean, M. and Mouillot, D. and Villéger, S. and Graham, N.A.J. and Auber, A. (2019) Interspecific differences in environmental response blur trait dynamics in classic statistical analyses. Marine Biology, 166 (12). ISSN 0025-3162

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Abstract

Trait-based ecology strives to better understand how species, through their bio-ecological traits, respond to environmental changes, and influence ecosystem functioning. Identifying which traits are most responsive to environmental changes can provide insight for understanding community structuring and developing sustainable management practices. However, misinterpretations are possible, because standard statistical methods (e.g., principal component analysis and linear regression) for identifying and ranking the responses of different traits to environmental changes ignore interspecific differences. Here, using both artificial data and real-world examples from marine fish communities, we show how considering species-specific responses can lead to drastically different results than standard community-level methods. By demonstrating the potential impacts of interspecific differences on trait dynamics, we illuminate a major, yet rarely discussed issue, highlighting how analytical misinterpretations can confound our basic understanding of trait responses, which could have important consequences for biodiversity conservation.

Item Type:
Journal Article
Journal or Publication Title:
Marine Biology
Additional Information:
The final publication is available at Springer via http://dx.doi.org/10.1007/s00227-019-3602-5
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/1100/1104
Subjects:
ID Code:
139273
Deposited By:
Deposited On:
09 Jan 2020 15:30
Refereed?:
Yes
Published?:
Published
Last Modified:
28 Mar 2020 06:24