Abstract:
:Climate change is expected to alter the distribution and abundance of many species. Predictions of climate-induced population extinctions are supported by geographic range shifts that correspond to climatic warming, but few extinctions have been linked mechanistically to climate change. Here we show that extinctions of two populations of a checkerspot butterfly were hastened by increasing variability in precipitation, a phenomenon predicted by global climate models. We model checkerspot populations to show that changes in precipitation amplified population fluctuations, leading to rapid extinctions. As populations of checkerspots and other species become further isolated by habitat loss, climate change is likely to cause more extinctions, threatening both species diversity and critical ecosystem services.
journal_name
Proc Natl Acad Sci U S Aauthors
McLaughlin JF,Hellmann JJ,Boggs CL,Ehrlich PRdoi
10.1073/pnas.052131199keywords:
subject
Has Abstractpub_date
2002-04-30 00:00:00pages
6070-4issue
9eissn
0027-8424issn
1091-6490pii
052131199journal_volume
99pub_type
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