Survival of Svalbard pink‐footed geese Anser brachyrhynchus in relation to winter climate, density and land‐use
Summary Global change may strongly affect population dynamics, but mechanisms remain elusive. Several Arctic goose species have increased considerably during the last decades. Climate, and land‐use changes outside the breeding area have been invoked as causes but have not been tested. We analysed th...
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Online Access: | http://dx.doi.org/10.1111/j.1365-2656.2006.01140.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1365-2656.2006.01140.x https://besjournals.onlinelibrary.wiley.com/doi/pdf/10.1111/j.1365-2656.2006.01140.x |
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crwiley:10.1111/j.1365-2656.2006.01140.x 2024-06-23T07:45:39+00:00 Survival of Svalbard pink‐footed geese Anser brachyrhynchus in relation to winter climate, density and land‐use KÉRY, MARC MADSEN, JESPER LEBRETON, JEAN‐DOMINIQUE 2006 http://dx.doi.org/10.1111/j.1365-2656.2006.01140.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1365-2656.2006.01140.x https://besjournals.onlinelibrary.wiley.com/doi/pdf/10.1111/j.1365-2656.2006.01140.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Animal Ecology volume 75, issue 5, page 1172-1181 ISSN 0021-8790 1365-2656 journal-article 2006 crwiley https://doi.org/10.1111/j.1365-2656.2006.01140.x 2024-06-06T04:21:25Z Summary Global change may strongly affect population dynamics, but mechanisms remain elusive. Several Arctic goose species have increased considerably during the last decades. Climate, and land‐use changes outside the breeding area have been invoked as causes but have not been tested. We analysed the relationships between conditions on wintering and migration staging areas, and survival in Svalbard pink‐footed geese Anser brachyrhynchus . Using mark–recapture data from 14 winters (1989–2002) we estimated survival rates and tested for time trends, and effects of climate, goose density and land‐use. Resighting rates differed for males and females, were higher for birds recorded during the previous winter and changed smoothly over time. Survival rates did not differ between sexes, varied over time with a nonsignificant negative trend, and were higher for the first interval after marking (0·88–0·97) than afterwards (0·74–0·93). Average survival estimates were 0·967 (SE 0·026) for the first and 0·861 (SE 0·023) for all later survival intervals. We combined 16 winter and spring climate covariates into two principal components axes. F1 was related to warm/wet winters and an early spring on the Norwegian staging areas and F2 to dry/cold winters. We expected that F1 would be positively related to survival and F2 negatively. F1 explained 23% of survival variation ( F 1,10 = 3·24; one‐sided P = 0·051) when alone in a model and 28% ( F 1,9 = 4·50; one‐sided P = 0·031) in a model that assumed a trend for survival. In contrast, neither F2 nor density, land‐use, or scaring practices on important Norwegian spring staging areas had discernible effects on survival. Climate change may thus affect goose population dynamics, with warmer winters and earlier springs enhancing survival and fecundity. A possible mechanism is increased food availability on Danish wintering and Norwegian staging areas. As geese are among the main herbivores in Arctic ecosystems, climate change, by increasing goose populations, may have important indirect ... Article in Journal/Newspaper Anser brachyrhynchus Arctic Climate change Svalbard Wiley Online Library Arctic Svalbard Journal of Animal Ecology 75 5 1172 1181 |
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Open Polar |
collection |
Wiley Online Library |
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crwiley |
language |
English |
description |
Summary Global change may strongly affect population dynamics, but mechanisms remain elusive. Several Arctic goose species have increased considerably during the last decades. Climate, and land‐use changes outside the breeding area have been invoked as causes but have not been tested. We analysed the relationships between conditions on wintering and migration staging areas, and survival in Svalbard pink‐footed geese Anser brachyrhynchus . Using mark–recapture data from 14 winters (1989–2002) we estimated survival rates and tested for time trends, and effects of climate, goose density and land‐use. Resighting rates differed for males and females, were higher for birds recorded during the previous winter and changed smoothly over time. Survival rates did not differ between sexes, varied over time with a nonsignificant negative trend, and were higher for the first interval after marking (0·88–0·97) than afterwards (0·74–0·93). Average survival estimates were 0·967 (SE 0·026) for the first and 0·861 (SE 0·023) for all later survival intervals. We combined 16 winter and spring climate covariates into two principal components axes. F1 was related to warm/wet winters and an early spring on the Norwegian staging areas and F2 to dry/cold winters. We expected that F1 would be positively related to survival and F2 negatively. F1 explained 23% of survival variation ( F 1,10 = 3·24; one‐sided P = 0·051) when alone in a model and 28% ( F 1,9 = 4·50; one‐sided P = 0·031) in a model that assumed a trend for survival. In contrast, neither F2 nor density, land‐use, or scaring practices on important Norwegian spring staging areas had discernible effects on survival. Climate change may thus affect goose population dynamics, with warmer winters and earlier springs enhancing survival and fecundity. A possible mechanism is increased food availability on Danish wintering and Norwegian staging areas. As geese are among the main herbivores in Arctic ecosystems, climate change, by increasing goose populations, may have important indirect ... |
format |
Article in Journal/Newspaper |
author |
KÉRY, MARC MADSEN, JESPER LEBRETON, JEAN‐DOMINIQUE |
spellingShingle |
KÉRY, MARC MADSEN, JESPER LEBRETON, JEAN‐DOMINIQUE Survival of Svalbard pink‐footed geese Anser brachyrhynchus in relation to winter climate, density and land‐use |
author_facet |
KÉRY, MARC MADSEN, JESPER LEBRETON, JEAN‐DOMINIQUE |
author_sort |
KÉRY, MARC |
title |
Survival of Svalbard pink‐footed geese Anser brachyrhynchus in relation to winter climate, density and land‐use |
title_short |
Survival of Svalbard pink‐footed geese Anser brachyrhynchus in relation to winter climate, density and land‐use |
title_full |
Survival of Svalbard pink‐footed geese Anser brachyrhynchus in relation to winter climate, density and land‐use |
title_fullStr |
Survival of Svalbard pink‐footed geese Anser brachyrhynchus in relation to winter climate, density and land‐use |
title_full_unstemmed |
Survival of Svalbard pink‐footed geese Anser brachyrhynchus in relation to winter climate, density and land‐use |
title_sort |
survival of svalbard pink‐footed geese anser brachyrhynchus in relation to winter climate, density and land‐use |
publisher |
Wiley |
publishDate |
2006 |
url |
http://dx.doi.org/10.1111/j.1365-2656.2006.01140.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1365-2656.2006.01140.x https://besjournals.onlinelibrary.wiley.com/doi/pdf/10.1111/j.1365-2656.2006.01140.x |
geographic |
Arctic Svalbard |
geographic_facet |
Arctic Svalbard |
genre |
Anser brachyrhynchus Arctic Climate change Svalbard |
genre_facet |
Anser brachyrhynchus Arctic Climate change Svalbard |
op_source |
Journal of Animal Ecology volume 75, issue 5, page 1172-1181 ISSN 0021-8790 1365-2656 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1365-2656.2006.01140.x |
container_title |
Journal of Animal Ecology |
container_volume |
75 |
container_issue |
5 |
container_start_page |
1172 |
op_container_end_page |
1181 |
_version_ |
1802641711706406912 |