Chaired session on Climate Change: Climate influences on dispersal and survival of northern fur seal pups
Northern fur seal pups, Callorhinus ursinus , from declining populationsin the Bering Sea contend with extreme and highly variable oceanicconditions during their first winter migrations. Understanding how naiveanimals from increasing and decreasing populations respond to changeableenvironmental cues...
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ftunivtasecite:oai:ecite.utas.edu.au:101308 2023-05-15T15:43:49+02:00 Chaired session on Climate Change: Climate influences on dispersal and survival of northern fur seal pups Lea, MA Sterling, JT Bond, N Melin, S Ream, RR Gelatt, T 2011 application/pdf http://ecite.utas.edu.au/101308 en eng - http://ecite.utas.edu.au/101308/1/ICCB2011_Abstracts_Electronic.pdf Lea, MA and Sterling, JT and Bond, N and Melin, S and Ream, RR and Gelatt, T, Chaired session on Climate Change: Climate influences on dispersal and survival of northern fur seal pups, 25th International Congress for Conservation Biology Abstracts, 5-9 December, Auckland, New Zealand, pp. 92. (2011) [Chair International Conference] http://ecite.utas.edu.au/101308 Environmental Sciences Environmental management Wildlife and habitat management Chair International Conference NonPeerReviewed 2011 ftunivtasecite 2022-08-08T22:16:41Z Northern fur seal pups, Callorhinus ursinus , from declining populationsin the Bering Sea contend with extreme and highly variable oceanicconditions during their first winter migrations. Understanding how naiveanimals from increasing and decreasing populations respond to changeableenvironmental cues is fundamental to disentangling possible mechanismsdriving observed, large-scale declines. We tracked 166 newly-weaned pupsfrom four North American populations, both increasing and decreasing,to determine the influence of wind conditions, sea surface height andtemperature and proximity to productive frontal features on the foragingstate of individual pups. Pups conducted far-ranging migrations across theNorth Pacific Ocean, triggered by the onset of autumnal storms. At-seaconditions differed markedly between the two years as did pup movements.Alaskan pups travelled faster when 'assisted' by tailwinds and spent moretime in northern latitudes in less stormy years. The migration patterns ofpups were more random than those published for adults also indicating thatyoung animals undergo a period of learning at sea. We provide examples andspeculate on how storms may impact survival of naive pups, particularly inyears when pup weaning mass is low. We conclude that increasing intensityand frequency of storm events in the North Pacific Ocean could haverepercussions on pup behaviour and population demographics of Northernfur seals across their range. Text Bering Sea Callorhinus ursinus Northern fur seal eCite UTAS (University of Tasmania) Bering Sea Pacific |
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Environmental Sciences Environmental management Wildlife and habitat management |
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Environmental Sciences Environmental management Wildlife and habitat management Lea, MA Sterling, JT Bond, N Melin, S Ream, RR Gelatt, T Chaired session on Climate Change: Climate influences on dispersal and survival of northern fur seal pups |
topic_facet |
Environmental Sciences Environmental management Wildlife and habitat management |
description |
Northern fur seal pups, Callorhinus ursinus , from declining populationsin the Bering Sea contend with extreme and highly variable oceanicconditions during their first winter migrations. Understanding how naiveanimals from increasing and decreasing populations respond to changeableenvironmental cues is fundamental to disentangling possible mechanismsdriving observed, large-scale declines. We tracked 166 newly-weaned pupsfrom four North American populations, both increasing and decreasing,to determine the influence of wind conditions, sea surface height andtemperature and proximity to productive frontal features on the foragingstate of individual pups. Pups conducted far-ranging migrations across theNorth Pacific Ocean, triggered by the onset of autumnal storms. At-seaconditions differed markedly between the two years as did pup movements.Alaskan pups travelled faster when 'assisted' by tailwinds and spent moretime in northern latitudes in less stormy years. The migration patterns ofpups were more random than those published for adults also indicating thatyoung animals undergo a period of learning at sea. We provide examples andspeculate on how storms may impact survival of naive pups, particularly inyears when pup weaning mass is low. We conclude that increasing intensityand frequency of storm events in the North Pacific Ocean could haverepercussions on pup behaviour and population demographics of Northernfur seals across their range. |
format |
Text |
author |
Lea, MA Sterling, JT Bond, N Melin, S Ream, RR Gelatt, T |
author_facet |
Lea, MA Sterling, JT Bond, N Melin, S Ream, RR Gelatt, T |
author_sort |
Lea, MA |
title |
Chaired session on Climate Change: Climate influences on dispersal and survival of northern fur seal pups |
title_short |
Chaired session on Climate Change: Climate influences on dispersal and survival of northern fur seal pups |
title_full |
Chaired session on Climate Change: Climate influences on dispersal and survival of northern fur seal pups |
title_fullStr |
Chaired session on Climate Change: Climate influences on dispersal and survival of northern fur seal pups |
title_full_unstemmed |
Chaired session on Climate Change: Climate influences on dispersal and survival of northern fur seal pups |
title_sort |
chaired session on climate change: climate influences on dispersal and survival of northern fur seal pups |
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- |
publishDate |
2011 |
url |
http://ecite.utas.edu.au/101308 |
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Bering Sea Pacific |
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Bering Sea Pacific |
genre |
Bering Sea Callorhinus ursinus Northern fur seal |
genre_facet |
Bering Sea Callorhinus ursinus Northern fur seal |
op_relation |
http://ecite.utas.edu.au/101308/1/ICCB2011_Abstracts_Electronic.pdf Lea, MA and Sterling, JT and Bond, N and Melin, S and Ream, RR and Gelatt, T, Chaired session on Climate Change: Climate influences on dispersal and survival of northern fur seal pups, 25th International Congress for Conservation Biology Abstracts, 5-9 December, Auckland, New Zealand, pp. 92. (2011) [Chair International Conference] http://ecite.utas.edu.au/101308 |
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