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Research article - Peer-reviewed, 2021

The traits of "trait ecologists": An analysis of the use of trait and functional trait terminology

Dawson, Samantha K.; Carmona, Carlos Perez; Gonzalez-Suarez, Manuela; Jonsson, Mari; Chichorro, Filipe; Mallen-Cooper, Max; Melero, Yolanda; Moor, Helen; Simaika, John P.; Duthie, Alexander Bradley;

Abstract

Trait and functional trait approaches have revolutionized ecology improving our understanding of community assembly, species coexistence, and biodiversity loss. Focusing on traits promotes comparability across spatial and organizational scales, but terms must be used consistently. While several papers have offered definitions, it remains unclear how ecologists operationalize "trait" and "functional trait" terms. Here, we evaluate how researchers and the published literatures use these terms and explore differences among subdisciplines and study systems (taxa and biome). By conducting both a survey and a literature review, we test the hypothesis that ecologists' working definition of "trait" is adapted or altered when confronting the realities of collecting, analyzing and presenting data. From 486 survey responses and 712 reviewed papers, we identified inconsistencies in the understanding and use of terminology among researchers, but also limited inclusion of definitions within the published literature. Discrepancies were not explained by subdiscipline, system of study, or respondent characteristics, suggesting there could be an inconsistent understanding even among those working in related topics. Consistencies among survey responses included the use of morphological, phonological, and physiological traits. Previous studies have called for unification of terminology; yet, our study shows that proposed definitions are not consistently used or accepted. Sources of disagreement include trait heritability, defining and interpreting function, and dealing with organisms in which individuals are not clearly recognizable. We discuss and offer guidelines for overcoming these disagreements. The diversity of life on Earth means traits can represent different features that can be measured and reported in different ways, and thus, narrow definitions that work for one system will fail in others. We recommend ecologists embrace the breadth of biodiversity using a simplified definition of "trait" more consistent with its common use. Trait-based approaches will be most powerful if we accept that traits are at least as diverse as trait ecologists.

Keywords

community ecology; functional ecology; functional trait; trait

Published in

Ecology and Evolution

2021, volume: 11, number: 23, pages: 16434-16445
Publisher: WILEY

Authors' information

Swedish University of Agricultural Sciences, Swedish Species Information Centre
Carmona, Carlos Perez
University of Tartu
Gonzalez-Suarez, Manuela
University of Reading
Swedish University of Agricultural Sciences, Swedish Species Information Centre
Chichorro, Filipe
University of Helsinki
Mallen-Cooper, Max
University of New South Wales Sydney
Melero, Yolanda
Centro de Investigacion Ecologica y Aplicaciones Forestales (CREAF)
Moor, Helen
Swedish University of Agricultural Sciences, Swedish Species Information Centre
Simaika, John P.
IHE Delft Institute for Water Education
Duthie, Alexander Bradley
University of Stirling

Sustainable Development Goals

SDG15 Life on land

UKÄ Subject classification

Ecology

Publication Identifiers

DOI: https://doi.org/10.1002/ece3.8321

URI (permanent link to this page)

https://res.slu.se/id/publ/114456