Temperature-related geographical shifts among passerines: contrasting processes along poleward and equatorward range margins.

ABSTRACT: Climate change is causing widespread geographical range shifts, which likely reflects different processes at leading and trailing range margins. Progressive warming is thought to relax thermal barriers at poleward range margins, enabling colonization of novel areas, but imposes increasingly unsuitable thermal conditions at equatorward margins, leading to range losses from those areas. Few tests of this process during recent climate change have been possible, but understanding determinants of species' range limits will improve predictions of their geographical responses to climate change and variation in extinction risk. Here, we examine the relationship between poleward and equatorward range margin dynamics with respect to temperature-related geographical limits observed for 34 breeding pa

SUBMITTER: Coristine LE 

PROVIDER: S-EPMC6102530 | biostudies-literature | 2015 Nov

REPOSITORIES: biostudies-literature