Cardillo, Marcel; Mace, Georgina M; Jones, Kate E.; Bielby, Jon; Bininda-Emonds, Olaf R. P.; Sechrest, Wes; Orme, C. David L.; Purvis, A.
Many large animal species have a high risk of extinction. This is usually thought to result simply from the way that species traits associated with vulnerability, such as low reproductive rates, scale with body size. In a broad-scale analysis of extinction risk in mammals, we find two additional patterns in the size selectivity of extinction risk. First, impacts of both intrinsic and environmental factors increase sharply above a threshold body mass around 3 kilograms. Second, whereas...[Show more]
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