期刊
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
卷 115, 期 47, 页码 11982-11987出版社
NATL ACAD SCIENCES
DOI: 10.1073/pnas.1804224115
关键词
biotic attrition; global warming; mountaintop extinction; range shift; tropical mountain
资金
- National Science Foundation Postdoctoral Fellowship in Biology [1523695]
- Banting Canada Postdoctoral Fellowship [379958]
- Biodiversity Research Centre at the University of British Columbia
- National Science Foundation [BSR-8508361]
- Field Museum of Natural History
- Div Of Biological Infrastructure
- Direct For Biological Sciences [1523695] Funding Source: National Science Foundation
Montane species worldwide are shifting upslope in response to recent temperature increases. These upslope shifts are predicted to lead to mountaintop extinctions of species that live only near mountain summits, but empirical examples of populations that have disappeared are sparse. We show that recent warming constitutes an escalator to extinction for birds on a remote Peruvian mountain-high-elevation species have declined in both range size and abundance, and several previously common mountaintop residents have disappeared from the local community. Our findings support projections that warming will likely drive widespread extirpations and extinctions of high-elevation taxa in the tropical Andes. Such climate change-driven mountaintop extirpations may be more likely in the tropics, where temperature seems to exert a stronger control on species' range limits than in the temperate zone. In contrast, we show that lowland bird species at our study site are expanding in range size as they shift their upper limits upslope and may thus benefit from climate change.
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