Data from: Increased land use by Chukchi Sea polar bears in relation to changing sea ice conditions
Recent observations suggest that polar bears (Ursus maritimus) are increasingly using land habitats in some parts of their range, where they have minimal access to their preferred prey, likely in response to loss of their sea ice habitat associated with climatic warming. We used location data from f...
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ftdans:oai:easy.dans.knaw.nl:easy-dataset:90911 2023-07-02T03:31:34+02:00 Data from: Increased land use by Chukchi Sea polar bears in relation to changing sea ice conditions Rode, Karyn D. Wilson, Ryan R. Regehr, Eric V. St. Martin, Michelle Douglas, David C. Olson, Jay 2015-11-20T16:05:42.000+01:00 http://nbn-resolving.org/urn:nbn:nl:ui:13-58-o3ic https://easy.dans.knaw.nl/ui/datasets/id/easy-dataset:90911 unknown doi:10.5061/dryad.n5509/1 doi:10.1371/journal.pone.0142213 PMID:26580809 http://nbn-resolving.org/urn:nbn:nl:ui:13-58-o3ic doi:10.5061/dryad.n5509 https://easy.dans.knaw.nl/ui/datasets/id/easy-dataset:90911 OPEN_ACCESS: The data are archived in Easy, they are accessible elsewhere through the DOI https://dans.knaw.nl/en/about/organisation-and-policy/legal-information/DANSLicence.pdf Life sciences medicine and health care 2015 ftdans https://doi.org/10.5061/dryad.n5509/110.1371/journal.pone.014221310.5061/dryad.n5509 2023-06-13T12:48:06Z Recent observations suggest that polar bears (Ursus maritimus) are increasingly using land habitats in some parts of their range, where they have minimal access to their preferred prey, likely in response to loss of their sea ice habitat associated with climatic warming. We used location data from female polar bears fit with satellite radio collars to compare land use patterns in the Chukchi Sea between two periods (1986–1995 and 2008–2013) when substantial summer sea-ice loss occurred. In both time periods, polar bears predominantly occupied sea-ice, although land was used during the summer sea-ice retreat and during the winter for maternal denning. However, the proportion of bears on land for > 7 days between August and October increased between the two periods from 20.0% to 38.9%, and the average duration on land increased by 30 days. The majority of bears that used land in the summer and for denning came to Wrangel and Herald Islands (Russia), highlighting the importance of these northernmost land habitats to Chukchi Sea polar bears. Where bears summered and denned, and how long they spent there, was related to the timing and duration of sea ice retreat. Our results are consistent with other studies supporting increased land use as a common response of polar bears to sea-ice loss. Implications of increased land use for Chukchi Sea polar bears are unclear, because a recent study observed no change in body condition or reproductive indices between the two periods considered here. This result suggests that the ecology of this region may provide a degree of resilience to sea ice loss. However, projections of continued sea ice loss suggest that polar bears in the Chukchi Sea and other parts of the Arctic may increasingly use land habitats in the future, which has the potential to increase nutritional stress and human-polar bear interactions. Other/Unknown Material Arctic Chukchi Chukchi Sea Sea ice Ursus maritimus Data Archiving and Networked Services (DANS): EASY (KNAW - Koninklijke Nederlandse Akademie van Wetenschappen) Arctic Chukchi Sea |
institution |
Open Polar |
collection |
Data Archiving and Networked Services (DANS): EASY (KNAW - Koninklijke Nederlandse Akademie van Wetenschappen) |
op_collection_id |
ftdans |
language |
unknown |
topic |
Life sciences medicine and health care |
spellingShingle |
Life sciences medicine and health care Rode, Karyn D. Wilson, Ryan R. Regehr, Eric V. St. Martin, Michelle Douglas, David C. Olson, Jay Data from: Increased land use by Chukchi Sea polar bears in relation to changing sea ice conditions |
topic_facet |
Life sciences medicine and health care |
description |
Recent observations suggest that polar bears (Ursus maritimus) are increasingly using land habitats in some parts of their range, where they have minimal access to their preferred prey, likely in response to loss of their sea ice habitat associated with climatic warming. We used location data from female polar bears fit with satellite radio collars to compare land use patterns in the Chukchi Sea between two periods (1986–1995 and 2008–2013) when substantial summer sea-ice loss occurred. In both time periods, polar bears predominantly occupied sea-ice, although land was used during the summer sea-ice retreat and during the winter for maternal denning. However, the proportion of bears on land for > 7 days between August and October increased between the two periods from 20.0% to 38.9%, and the average duration on land increased by 30 days. The majority of bears that used land in the summer and for denning came to Wrangel and Herald Islands (Russia), highlighting the importance of these northernmost land habitats to Chukchi Sea polar bears. Where bears summered and denned, and how long they spent there, was related to the timing and duration of sea ice retreat. Our results are consistent with other studies supporting increased land use as a common response of polar bears to sea-ice loss. Implications of increased land use for Chukchi Sea polar bears are unclear, because a recent study observed no change in body condition or reproductive indices between the two periods considered here. This result suggests that the ecology of this region may provide a degree of resilience to sea ice loss. However, projections of continued sea ice loss suggest that polar bears in the Chukchi Sea and other parts of the Arctic may increasingly use land habitats in the future, which has the potential to increase nutritional stress and human-polar bear interactions. |
author |
Rode, Karyn D. Wilson, Ryan R. Regehr, Eric V. St. Martin, Michelle Douglas, David C. Olson, Jay |
author_facet |
Rode, Karyn D. Wilson, Ryan R. Regehr, Eric V. St. Martin, Michelle Douglas, David C. Olson, Jay |
author_sort |
Rode, Karyn D. |
title |
Data from: Increased land use by Chukchi Sea polar bears in relation to changing sea ice conditions |
title_short |
Data from: Increased land use by Chukchi Sea polar bears in relation to changing sea ice conditions |
title_full |
Data from: Increased land use by Chukchi Sea polar bears in relation to changing sea ice conditions |
title_fullStr |
Data from: Increased land use by Chukchi Sea polar bears in relation to changing sea ice conditions |
title_full_unstemmed |
Data from: Increased land use by Chukchi Sea polar bears in relation to changing sea ice conditions |
title_sort |
data from: increased land use by chukchi sea polar bears in relation to changing sea ice conditions |
publishDate |
2015 |
url |
http://nbn-resolving.org/urn:nbn:nl:ui:13-58-o3ic https://easy.dans.knaw.nl/ui/datasets/id/easy-dataset:90911 |
geographic |
Arctic Chukchi Sea |
geographic_facet |
Arctic Chukchi Sea |
genre |
Arctic Chukchi Chukchi Sea Sea ice Ursus maritimus |
genre_facet |
Arctic Chukchi Chukchi Sea Sea ice Ursus maritimus |
op_relation |
doi:10.5061/dryad.n5509/1 doi:10.1371/journal.pone.0142213 PMID:26580809 http://nbn-resolving.org/urn:nbn:nl:ui:13-58-o3ic doi:10.5061/dryad.n5509 https://easy.dans.knaw.nl/ui/datasets/id/easy-dataset:90911 |
op_rights |
OPEN_ACCESS: The data are archived in Easy, they are accessible elsewhere through the DOI https://dans.knaw.nl/en/about/organisation-and-policy/legal-information/DANSLicence.pdf |
op_doi |
https://doi.org/10.5061/dryad.n5509/110.1371/journal.pone.014221310.5061/dryad.n5509 |
_version_ |
1770270939311767552 |