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An attribute-diversity approach to functional diversity, functional beta diversity, and related (dis)similarity measures ArchiMer
Chao, Anne; Chiu, Chun-huo; Villéger, Sébastien; Sun, I-fang; Thorn, Simon; Lin, Yi-ching; Chiang, Jyh-min; Sherwin, William B..
Based on the framework of attribute diversity (a generalization of Hill numbers of order q), we develop a class of functional diversity measures sensitive not only to species abundances but also to trait‐based species‐pairwise functional distances. The new method refines and improves on the conventional species‐equivalent approach in three areas: (1) the conventional method often gives similar values (close to unity) to assemblages with contrasting levels of functional diversity; (2) when a distance metric is unbounded, the conventional functional diversity depends on the presence/absence of other assemblages in the study; (3) in partitioning functional gamma diversity into alpha and beta components, the conventional gamma is sometimes less than alpha. To...
Tipo: Text Palavras-chave: Attribute diversity; Diversity decomposition; Functional (dis)similarity; Functional beta diversity; Functional diversity; Hill numbers; Quadratic entropy; Species diversity; Species traits; Trait diversity.
Ano: 2019 URL: https://archimer.ifremer.fr/doc/00489/60082/63408.pdf
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