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Climate Change, Keystone Predation, and Biodiversity Loss
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Permanent Link:
http://dpanther.fiu.edu/dpService/dpPurlService/purl/FI15060318/00001
Material Information
Title:
Climate Change, Keystone Predation, and Biodiversity Loss
Series Title:
Science Magazine Volume 334
Creator:
Christopher D.G. Harvey
Publisher:
American Association for the Advancement of Science
Publication Date:
2011
Language:
English
Subjects
Subjects / Keywords:
climatre change
biodiversity
keystone species
Notes
Abstract:
Climate change can affect organisms both directly via physiological stress and indirectly via changing relationships among species. However, we do not fully understand how changing interspecific relationships contribute to community- and ecosystem-level responses to environmental forcing. I used experiments and spatial and temporal comparisons to demonstrate that warming substantially reduces predator-free space on rocky shores. The vertical extent of mussel beds decreased by 51% in 52 years, and reproductive populations of mussels disappeared at several sites. Prey species were able to occupy a hot, extralimital site if predation pressure was experimentally reduced, and local species richness more than doubled as a result. These results suggest that anthropogenic climate change can alter interspecific interactions and produce unexpected changes in species distributions, community structure, and diversity.
Record Information
Source Institution:
Florida International University
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