Data from: Extensive sampling of polar bears (Ursus maritimus) in the Northwest Passage (Canadian Arctic Archipelago) reveals population differentiation across multiple spatial and temporal scales
As global warming accelerates the melting of Arctic sea ice, polar bears (Ursus maritimus) must adapt to a rapidly changing landscape. This process will necessarily alter the species distribution together with population dynamics and structure. Detailed knowledge of these changes is crucial to delin...
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ftdans:oai:easy.dans.knaw.nl:easy-dataset:83846 2023-07-02T03:30:54+02:00 Data from: Extensive sampling of polar bears (Ursus maritimus) in the Northwest Passage (Canadian Arctic Archipelago) reveals population differentiation across multiple spatial and temporal scales Campagna, Leonardo Van Coeverden de Groot, Peter J. Saunders, Brenda L. Atkinson, Stephen N. Weber, Diana S. Dyck, Markus G. Boag, Peter T. Lougheed, Stephen C. 2013-08-07T19:04:51.000+02:00 http://nbn-resolving.org/urn:nbn:nl:ui:13-22-6nyh https://easy.dans.knaw.nl/ui/datasets/id/easy-dataset:83846 unknown doi:10.5061/dryad.h1v63/1 doi:10.1002/ece3.662 PMID:24102001 http://nbn-resolving.org/urn:nbn:nl:ui:13-22-6nyh doi:10.5061/dryad.h1v63 https://easy.dans.knaw.nl/ui/datasets/id/easy-dataset:83846 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 2013 ftdans https://doi.org/10.5061/dryad.h1v63/110.1002/ece3.66210.5061/dryad.h1v63 2023-06-13T13:09:45Z As global warming accelerates the melting of Arctic sea ice, polar bears (Ursus maritimus) must adapt to a rapidly changing landscape. This process will necessarily alter the species distribution together with population dynamics and structure. Detailed knowledge of these changes is crucial to delineating conservation priorities. Here, we sampled 361 polar bears from across the center of the Canadian Arctic Archipelago spanning the Gulf of Boothia (GB) and M'Clintock Channel (MC). We use DNA microsatellites and mitochondrial control region sequences to quantify genetic differentiation, estimate gene flow, and infer population history. Two populations, roughly coincident with GB and MC, are significantly differentiated at both nuclear (FST = 0.01) and mitochondrial (ΦST = 0.47; FST = 0.29) loci, allowing Bayesian clustering analyses to assign individuals to either group. Our data imply that the causes of the mitochondrial and nuclear genetic patterns differ. Analysis of mtDNA reveals the matrilineal structure dates at least to the Holocene, and is common to individuals throughout the species’ range. These mtDNA differences probably reflect both genetic drift and historical colonization dynamics. In contrast, the differentiation inferred from microsatellites is only on the scale of hundreds of years, possibly reflecting contemporary impediments to gene flow. Taken together, our data suggest that gene flow is insufficient to homogenize the GB and MC populations and support the designation of GB and MC as separate polar bear conservation units. Our study also provide a striking example of how nuclear DNA and mtDNA capture different aspects of a species demographic history. Other/Unknown Material Arctic Archipelago Arctic Canadian Arctic Archipelago Global warming Northwest passage Sea ice Ursus maritimus Data Archiving and Networked Services (DANS): EASY (KNAW - Koninklijke Nederlandse Akademie van Wetenschappen) Arctic Canadian Arctic Archipelago Northwest Passage M'Clintock ENVELOPE(-94.214,-94.214,57.802,57.802) Gulf of Boothia ENVELOPE(-90.657,-90.657,70.719,70.719) The Gib ENVELOPE(-57.531,-57.531,51.817,51.817) M'Clintock Channel ENVELOPE(-102.002,-102.002,72.001,72.001) |
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 Campagna, Leonardo Van Coeverden de Groot, Peter J. Saunders, Brenda L. Atkinson, Stephen N. Weber, Diana S. Dyck, Markus G. Boag, Peter T. Lougheed, Stephen C. Data from: Extensive sampling of polar bears (Ursus maritimus) in the Northwest Passage (Canadian Arctic Archipelago) reveals population differentiation across multiple spatial and temporal scales |
topic_facet |
Life sciences medicine and health care |
description |
As global warming accelerates the melting of Arctic sea ice, polar bears (Ursus maritimus) must adapt to a rapidly changing landscape. This process will necessarily alter the species distribution together with population dynamics and structure. Detailed knowledge of these changes is crucial to delineating conservation priorities. Here, we sampled 361 polar bears from across the center of the Canadian Arctic Archipelago spanning the Gulf of Boothia (GB) and M'Clintock Channel (MC). We use DNA microsatellites and mitochondrial control region sequences to quantify genetic differentiation, estimate gene flow, and infer population history. Two populations, roughly coincident with GB and MC, are significantly differentiated at both nuclear (FST = 0.01) and mitochondrial (ΦST = 0.47; FST = 0.29) loci, allowing Bayesian clustering analyses to assign individuals to either group. Our data imply that the causes of the mitochondrial and nuclear genetic patterns differ. Analysis of mtDNA reveals the matrilineal structure dates at least to the Holocene, and is common to individuals throughout the species’ range. These mtDNA differences probably reflect both genetic drift and historical colonization dynamics. In contrast, the differentiation inferred from microsatellites is only on the scale of hundreds of years, possibly reflecting contemporary impediments to gene flow. Taken together, our data suggest that gene flow is insufficient to homogenize the GB and MC populations and support the designation of GB and MC as separate polar bear conservation units. Our study also provide a striking example of how nuclear DNA and mtDNA capture different aspects of a species demographic history. |
author |
Campagna, Leonardo Van Coeverden de Groot, Peter J. Saunders, Brenda L. Atkinson, Stephen N. Weber, Diana S. Dyck, Markus G. Boag, Peter T. Lougheed, Stephen C. |
author_facet |
Campagna, Leonardo Van Coeverden de Groot, Peter J. Saunders, Brenda L. Atkinson, Stephen N. Weber, Diana S. Dyck, Markus G. Boag, Peter T. Lougheed, Stephen C. |
author_sort |
Campagna, Leonardo |
title |
Data from: Extensive sampling of polar bears (Ursus maritimus) in the Northwest Passage (Canadian Arctic Archipelago) reveals population differentiation across multiple spatial and temporal scales |
title_short |
Data from: Extensive sampling of polar bears (Ursus maritimus) in the Northwest Passage (Canadian Arctic Archipelago) reveals population differentiation across multiple spatial and temporal scales |
title_full |
Data from: Extensive sampling of polar bears (Ursus maritimus) in the Northwest Passage (Canadian Arctic Archipelago) reveals population differentiation across multiple spatial and temporal scales |
title_fullStr |
Data from: Extensive sampling of polar bears (Ursus maritimus) in the Northwest Passage (Canadian Arctic Archipelago) reveals population differentiation across multiple spatial and temporal scales |
title_full_unstemmed |
Data from: Extensive sampling of polar bears (Ursus maritimus) in the Northwest Passage (Canadian Arctic Archipelago) reveals population differentiation across multiple spatial and temporal scales |
title_sort |
data from: extensive sampling of polar bears (ursus maritimus) in the northwest passage (canadian arctic archipelago) reveals population differentiation across multiple spatial and temporal scales |
publishDate |
2013 |
url |
http://nbn-resolving.org/urn:nbn:nl:ui:13-22-6nyh https://easy.dans.knaw.nl/ui/datasets/id/easy-dataset:83846 |
long_lat |
ENVELOPE(-94.214,-94.214,57.802,57.802) ENVELOPE(-90.657,-90.657,70.719,70.719) ENVELOPE(-57.531,-57.531,51.817,51.817) ENVELOPE(-102.002,-102.002,72.001,72.001) |
geographic |
Arctic Canadian Arctic Archipelago Northwest Passage M'Clintock Gulf of Boothia The Gib M'Clintock Channel |
geographic_facet |
Arctic Canadian Arctic Archipelago Northwest Passage M'Clintock Gulf of Boothia The Gib M'Clintock Channel |
genre |
Arctic Archipelago Arctic Canadian Arctic Archipelago Global warming Northwest passage Sea ice Ursus maritimus |
genre_facet |
Arctic Archipelago Arctic Canadian Arctic Archipelago Global warming Northwest passage Sea ice Ursus maritimus |
op_relation |
doi:10.5061/dryad.h1v63/1 doi:10.1002/ece3.662 PMID:24102001 http://nbn-resolving.org/urn:nbn:nl:ui:13-22-6nyh doi:10.5061/dryad.h1v63 https://easy.dans.knaw.nl/ui/datasets/id/easy-dataset:83846 |
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.h1v63/110.1002/ece3.66210.5061/dryad.h1v63 |
_version_ |
1770275184247308288 |