期刊
SCIENCE
卷 325, 期 5939, 页码 464-467出版社
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.1173668
关键词
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资金
- Natural Environment Research Council [NE/E015921/1]
- National Institute of Aging [P01/AG/22500]
- NERC [NE/E015921/1] Funding Source: UKRI
- Natural Environment Research Council [NE/E015921/1, NER/A/S/2003/00461] Funding Source: researchfish
Environmental change, including climate change, can cause rapid phenotypic change via both ecological and evolutionary processes. Because ecological and evolutionary dynamics are intimately linked, a major challenge is to identify their relative roles. We exactly decomposed the change in mean body weight in a free-living population of Soay sheep into all the processes that contribute to change. Ecological processes contribute most, with selection-the underpinning of adaptive evolution-explaining little of the observed phenotypic trend. Our results enable us to explain why selection has so little effect even though weight is heritable, and why environmental change has caused a decline in the body size of Soay sheep.
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