10.5061/DRYAD.5RF6B
Cleasby, Ian R.
University of Exeter
Bodey, Thomas W.
University of Exeter
Vigfusdottir, Freydis
University of Exeter
Icelandic Institute of Natural History
McDonald, Jenni L.
University of Exeter
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
University of Exeter
Bearhop, Stuart
University of Exeter
Data from: Climatic conditions produce contrasting influences on
demographic traits in a long distance Arctic migrant
Dryad
dataset
2017
annual routine
population demography
Canadian Arctic
capture-mark-recapture
2003-2015
Branta bernicla hrota
2017-12-07T00:00:00Z
2017-12-07T00:00:00Z
en
https://doi.org/10.1111/1365-2656.12623
1331 bytes
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CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
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.
M Arrays for adults and juvenilesSurvival histories in M Array format for
adult females, adult males and juveniles. Note juvenile goslings were only
ringed in one year of the present studyMarrs.csv
Western Europe
East Canadian Arctic