A review of the relation between species traits and extinction risk

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http://hdl.handle.net/10138/304584

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Chichorro , F , Juslén , A & Cardoso , P 2019 , ' A review of the relation between species traits and extinction risk ' Biological Conservation , vol. 237 , pp. 220-229 . https://doi.org/10.1016/j.biocon.2019.07.001

Title: A review of the relation between species traits and extinction risk
Author: Chichorro, Filipe; Juslén, Aino; Cardoso, Pedro
Contributor: University of Helsinki, Zoology
University of Helsinki, Zoology
University of Helsinki, Zoology
Date: 2019-09
Number of pages: 10
Belongs to series: Biological Conservation
ISSN: 0006-3207
URI: http://hdl.handle.net/10138/304584
Abstract: Biodiversity is shrinking rapidly, and despite our efforts only a small part of it has been assessed for extinction risk. Identifying the traits that make species vulnerable might help us to predict the status for those less known. We gathered information on the relationships between traits and extinction risk from 173 publications, across all taxa, spatial scales and biogeographical regions, in what we think it is the most comprehensive compilation to date. We aimed to identify (1) taxonomical and spatial biases, and (2) statistically robust and generalizable predictors of extinction risk through the use of meta-analyses. Vertebrates and the Palaearctic are the most studied taxon and region because of higher accumulation of data in these groups. Among the many traits that have been suggested to be predictors, only three had enough data for meta-analyses. Two of them are potentially useful in assessing risk for the lesser-known species: regardless of the taxon, species with small range and narrow habitat breadth are more vulnerable to extinction. Contrastingly, body size (the most studied trait) did not present a consistently positive or negative response. We hypothesize that the relationship between body size and extinction risk is shaped by different aspects, namely the phenomena represented by body size depending on the taxonomic group. To increase our understanding of the drivers of extinction, further studies should focus on understudied groups such as invertebrates and fungi and regions such as the tropics and expand the number of traits in comparative analyses that should avoid current biases.
Subject: 1181 Ecology, evolutionary biology
BIOLOGICAL TRAITS
BODY SIZE
habitat breadth
META-ANALYSIS
geographical range
threat status
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