NDLI: Biding time before breeding: flexible use of the Arctic landscape by migratory geese during spring

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Biding time before breeding: flexible use of the Arctic landscape by migratory geese during spring

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Biding time before breeding: flexible use of the Arctic landscape by migratory geese during spring

Content Provider	Taylor & Francis Online
Author	Wal, René Van Der Madsen, Jesper Anderson, Helen B. Hübner, Christiaane E. Speed, James D. M.
Abstract	Many millions of long-distance migrants use pre-breeding staging sites located adjacent to breeding grounds immediately prior to nesting, presumably to improve body condition and thus reproductive success. However, in highly seasonal landscapes such as the High Arctic, early spring feeding opportunities are limited and time to complete the breeding cycle is short. Hence, a more productive strategy may be to initiate breeding as soon as local conditions allow. We used remote sensing satellite imagery combined with field-based methods to demonstrate flexible responses to local environmental conditions by Svalbard pink-footed geese (Anser brachyrhynchus), an abundant long-distance migratory herbivore. Satellite imagery revealed greater snow cover at the main nesting area in central Svalbard than at the adjacent pre-breeding staging site when snowmelt was late, with greater numbers of geese using the pre-breeding site. When snowmelt was early, however, snow cover at the main nesting area was lower than in years with late snowmelt and significantly fewer pink-footed geese used the pre-breeding site under such conditions. The response of geese to differing snowmelt conditions demonstrates flexibility in their use of the landscape, suggesting that pre-breeding sites are used primarily as a stop-gap in those years when snowmelt is late and nest sites inaccessible.
File Format	PDF HTM / HTML
ISSN	17518369
DOI	10.3402/polar.v34.26372
Journal	Polar Research
Volume Number	34
Issue Number	1
Language	English
Publisher	Routledge
Publisher Date	2015-07-07
Access Restriction	Open
Subject Keyword	Migratory geese Snowmelt timing Remote sensing satellite imagery Pre-breeding sites Nesting area.
Content Type	Text
Resource Type	Article
Subject	1900/1901 Environmental Chemistry Environmental Science Oceanography

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