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The goegraphical distribution of red and arctic foxes differ. The hypothesis that this difference results directly from their relative adaptations to extreme cold is dismissed. Consideration of body size and biogeographic effects on productivity suggests that the northern limit of the red fox's geographic range is determined directly by resource availability (and thus ultimately by climate), whereas the southern limit of the arctic fox's range is determined, through interspecific competition, by the distribution and abundance of red fox. -from Authors

Original publication

DOI

10.2307/3545168

Type

Journal article

Journal

Oikos

Publication Date

01/01/1992

Volume

64

Pages

505 - 515