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The Journal of animal ecology v.86 no.2, 2017년, pp.285 - 295   SCI SCIE
본 등재정보는 저널의 등재정보를 참고하여 보여주는 베타서비스로 정확한 논문의 등재여부는 등재기관에 확인하시기 바랍니다.

Climatic conditions produce contrasting influences on demographic traits in a long‐distance Arctic migrant

Cleasby, Ian R. (Centre of Ecology and Conservation, University of Exeter, Cornwall Campus, Penryn, TR10 9FE, UK ) ; Bodey, Thomas W. (Centre of Ecology and Conservation, University of Exeter, Cornwall Campus, Penryn, TR10 9FE, UK ) ; Vigfusdottir, Freydis (Centre of Ecology and Conservation, University of Exeter, Cornwall Campus, Penryn, TR10 9FE, UK ) ; McDonald, Jenni L. (Centre of Ecology and Conservation, University of Exeter, Cornwall Campus, Penryn, TR10 9FE, UK ) ; McElwaine, Graham (Irish Brent Goose Research Group, 100 Strangford Road, Downpatrick, County Down, BT30 7JD, UK ) ; Mackie, Kerry (Irish Brent Goose Research Group, Mahee Island, Comber, County Down, BT23 6EP, UK ) ; Colhoun, Kendrew (RSPB Centre for Conservation Science, RSPB Northern Ireland, Belvoir Park Forest, Belfast, BT8 7QT, UK ) ; Bearhop, Stuart (Centre of Ecology and Conservation, University of ) ; Pelletier, Fanie ;
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    Summary The manner in which patterns of variation and interactions among demographic rates contribute to population growth rate (λ) is key to understanding how animal populations will respond to changing climatic conditions.Migratory species are likely to be particularly sensitive to climatic conditions as they experience a range of different environments throughout their annual cycle. However, few studies have provided fully integrated demographic analyses of migratory populations in response to changing climatic conditions.Here, we employed integrated population models to demonstrate that the environmental conditions experienced during a short but critical period play a central role in the demography of a long‐distance migrant, the light‐bellied Brent goose ( Branta bernicla hrota ).Female survival was positively associated with June North Atlantic Oscillation (NAO) values, whereas male survival was not. In contrast, breeding productivity was negatively associated with June NAO, suggesting a trade‐off between female survival and reproductive success. Both adult female and adult male survival showed low temporal variation, whereas there was high temporal variation in recruitment and breeding productivity. In addition, while annual population growth was positively correlated with annual breeding productivity, a sensitivity analysis revealed that population growth was most sensitive to changes in adult survival.Our results demonstrate that the environmental conditions experienced during a relatively short‐time window at the start of the breeding season play a critical role in shaping the demography of a long‐distant Arctic migrant. Crucially, different demographic rates responded in opposing directions to climatic variation, emphasising the need for integrated analysis of multiple demographic traits when understanding population dynamics.


  • 주제어

    annual routine .   Canadian Arctic .   capture–mark–recapture .   climate change .   population demography.  

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