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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ftzenodo:oai:zenodo.org:4959457 2023-06-06T11:48:44+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. 2013-08-07 https://zenodo.org/record/4959457 https://doi.org/10.5061/dryad.h1v63 unknown doi:10.1002/ece3.662 https://zenodo.org/communities/dryad https://zenodo.org/record/4959457 https://doi.org/10.5061/dryad.h1v63 oai:zenodo.org:4959457 info:eu-repo/semantics/openAccess https://creativecommons.org/publicdomain/zero/1.0/legalcode species at risk DNA microsatellites Holocene Marine mammals Ursus maritimus info:eu-repo/semantics/other dataset 2013 ftzenodo https://doi.org/10.5061/dryad.h1v6310.1002/ece3.662 2023-04-13T23:00:16Z 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. Data from Campagna et al 2013 Ecology and EvolutionMicrosatellite data set and all Structure, Geneland, Arlequin and IMa2 input files.Data from Campagna et al 2013.rar Dataset Arctic Archipelago Arctic Canadian Arctic Archipelago Global warming Northwest passage Sea ice Ursus maritimus Zenodo Arctic Canadian Arctic Archipelago Gulf of Boothia ENVELOPE(-90.657,-90.657,70.719,70.719) M'Clintock ENVELOPE(-94.214,-94.214,57.802,57.802) M'Clintock Channel ENVELOPE(-102.002,-102.002,72.001,72.001) Northwest Passage The Gib ENVELOPE(-57.531,-57.531,51.817,51.817) |
institution |
Open Polar |
collection |
Zenodo |
op_collection_id |
ftzenodo |
language |
unknown |
topic |
species at risk DNA microsatellites Holocene Marine mammals Ursus maritimus |
spellingShingle |
species at risk DNA microsatellites Holocene Marine mammals Ursus maritimus 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 |
species at risk DNA microsatellites Holocene Marine mammals Ursus maritimus |
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. Data from Campagna et al 2013 Ecology and EvolutionMicrosatellite data set and all Structure, Geneland, Arlequin and IMa2 input files.Data from Campagna et al 2013.rar |
format |
Dataset |
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 |
https://zenodo.org/record/4959457 https://doi.org/10.5061/dryad.h1v63 |
long_lat |
ENVELOPE(-90.657,-90.657,70.719,70.719) ENVELOPE(-94.214,-94.214,57.802,57.802) ENVELOPE(-102.002,-102.002,72.001,72.001) ENVELOPE(-57.531,-57.531,51.817,51.817) |
geographic |
Arctic Canadian Arctic Archipelago Gulf of Boothia M'Clintock M'Clintock Channel Northwest Passage The Gib |
geographic_facet |
Arctic Canadian Arctic Archipelago Gulf of Boothia M'Clintock M'Clintock Channel Northwest Passage The Gib |
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:10.1002/ece3.662 https://zenodo.org/communities/dryad https://zenodo.org/record/4959457 https://doi.org/10.5061/dryad.h1v63 oai:zenodo.org:4959457 |
op_rights |
info:eu-repo/semantics/openAccess https://creativecommons.org/publicdomain/zero/1.0/legalcode |
op_doi |
https://doi.org/10.5061/dryad.h1v6310.1002/ece3.662 |
_version_ |
1767954385971707904 |