globalchange  > 气候减缓与适应
DOI: 10.1111/ele.12871
Scopus记录号: 2-s2.0-85032829363
论文题名:
Climate mediates the success of migration strategies in a marine predator
作者: Abrahms B.; Hazen E.L.; Bograd S.J.; Brashares J.S.; Robinson P.W.; Scales K.L.; Crocker D.E.; Costa D.P.
刊名: Ecology Letters
ISSN: 1461023X
EISSN: 1461-0248
出版年: 2018
卷: 21, 期:1
起始页码: 63
结束页码: 71
语种: 英语
英文关键词: Behavioural strategy ; climate variability ; foraging ecology ; habitat selection ; individual specialisation ; migration ; Mirounga angustirostris ; northern elephant seal ; resource predictability ; site fidelity
Scopus关键词: Mirounga angustirostris
英文摘要: Individual behavioural specialisation has far-reaching effects on fitness and population persistence. Theory predicts that unconditional site fidelity, that is fidelity to a site independent of past outcome, provides a fitness advantage in unpredictable environments. However, the benefits of alternative site fidelity strategies driving intraspecific variation remain poorly understood and have not been evaluated in different environmental contexts. We show that contrary to expectation, strong and weak site fidelity strategies in migratory northern elephant seals performed similarly over 10 years, but the success of each strategy varied interannually and was strongly mediated by climate conditions. Strong fidelity facilitated stable energetic rewards and low risk, while weak fidelity facilitated high rewards and high risk. Weak fidelity outperformed strong fidelity in anomalous climate conditions, suggesting that the evolutionary benefits of site fidelity may be upended by increasing environmental variability. We highlight how individual behavioural specialisation may modulate the adaptive capacity of species to climate change. © 2017 John Wiley & Sons Ltd/CNRS
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/107518
Appears in Collections:气候减缓与适应

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作者单位: NOAA Southwest Fisheries Science Center, Environmental Research Division, 99 Pacific St. #255A, Monterey, CA, United States; Department of Ecology and Evolutionary Biology, University of California Santa Cruz, 115 McAllister Way, Santa Cruz, CA, United States; Department of Environmental Science, Policy, and Management, University of California Berkeley, 130 Mulford Hall #3114, Berkeley, CA, United States; University of the Sunshine Coast, 90 Sippy Downs Drive, Sippy Downs, Qld, Australia; Department of Biology, Sonoma State University, 1801 East Cotati Avenue, Rohnert Park, CA, United States

Recommended Citation:
Abrahms B.,Hazen E.L.,Bograd S.J.,et al. Climate mediates the success of migration strategies in a marine predator[J]. Ecology Letters,2018-01-01,21(1)
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