Temporal variation in population size of European bird species: effects of latitude and marginality of distribution.

ABSTRACT: In the Northern Hemisphere, global warming has been shown to affect animal populations in different ways, with southern populations in general suffering more from increased temperatures than northern populations of the same species. However, southern populations are also often marginal populations relative to the entire breeding range, and marginality may also have negative effects on populations. To disentangle the effects of latitude (possibly due to global warming) and marginality on temporal variation in population size, we investigated European breeding bird species across a latitudinal gradient. Population size estimates were regressed on years, and from these regressions we obtained the slope (a proxy for population trend) and the standard error of the estimate (SEE) (a proxy for po

SUBMITTER: Cuervo JJ 

PROVIDER: S-EPMC3798344 | biostudies-literature | 2013

REPOSITORIES: biostudies-literature