Body size trends in response to climate and urbanization in the widespread North American deer mouse, Peromyscus maniculatus

Robert Guralnick, Maggie Hantak, Daijiang Li & Bryan McLean
Body size decline is hypothesized to be a key response to climate warming, including warming driven by urban heat islands. However, urbanization may also generate selective gradients for body size increases in smaller endotherms via habitat fragmentation. Here we utilize a densely sampled, multi-sourcedataset to examine how climate and urbanization affect body size of Peromyscus maniculatus (PEMA), an abundant rodent found across north America. We predicted PEMA would conform to Bergmann’s Rule, e.g. larger individuals...
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These counts follow the COUNTER Code of Practice, meaning that Internet robots and repeats within a certain time frame are excluded.
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