SUPPORTING INFORMATION from Sea ice reduction drives genetic differentiation among Barents Sea polar bears
Loss of Arctic sea ice due to climate change is predicted to reduce both genetic diversity and gene flow in ice-dependent species, with potentially negative consequences for their long-term viability. Here, we tested for the population-genetic impacts of reduced sea ice cover on the polar bear ( Urs...
Main Authors: | , , , , , , , , , , , , |
---|---|
Format: | Other Non-Article Part of Journal/Newspaper |
Language: | unknown |
Published: |
2021
|
Subjects: | |
Online Access: | https://doi.org/10.6084/m9.figshare.15656607.v1 |
id |
ftsmithonian:oai:figshare.com:article/15656607 |
---|---|
record_format |
openpolar |
spelling |
ftsmithonian:oai:figshare.com:article/15656607 2023-05-15T14:51:37+02:00 SUPPORTING INFORMATION from Sea ice reduction drives genetic differentiation among Barents Sea polar bears Simo Njabulo Maduna (11305899) Jon Aars (681814) Ida Fløystad (9233898) Cornelya F. C. Klütsch (9233895) Eve M. L. Zeyl Fiskebeck (11305902) Øystein Wiig (681820) Dorothee Ehrich (2794225) Magnus Andersen (2794222) Lutz Bachmann (65847) Andrew E. Derocher (8479590) Tommi Nyman (680786) Hans Geir Eiken (8029133) Snorre B. Hagen (8029136) 2021-08-20T07:04:32Z https://doi.org/10.6084/m9.figshare.15656607.v1 unknown https://figshare.com/articles/journal_contribution/SUPPORTING_INFORMATION_from_Sea_ice_reduction_drives_genetic_differentiation_among_Barents_Sea_polar_bears/15656607 doi:10.6084/m9.figshare.15656607.v1 CC BY 4.0 CC-BY Genetics Evolutionary Biology arctic climate change genetic diversity ice-dependent sea ice loss Ursus maritimus Text Journal contribution 2021 ftsmithonian https://doi.org/10.6084/m9.figshare.15656607.v1 2021-12-20T03:55:37Z Loss of Arctic sea ice due to climate change is predicted to reduce both genetic diversity and gene flow in ice-dependent species, with potentially negative consequences for their long-term viability. Here, we tested for the population-genetic impacts of reduced sea ice cover on the polar bear ( Ursus maritimus ) sampled across two decades (1995–2016) from the Svalbard Archipelago, Norway, an area that is affected by rapid sea ice loss in the Arctic Barents Sea. We analysed genetic variation at 22 microsatellite loci for 626 polar bears from four sampling areas within the archipelago. Our results revealed a 3–10% loss of genetic diversity across the study period, accompanied by a near 200% in genetic differentiation across regions. These effects may best be explained by a decrease in gene flow caused by habitat fragmentation due to the loss of sea ice coverage, resulting in increased inbreeding of local polar bears within the focal sampling areas in the Svalbard Archipelago. This study illustrates the importance of genetic monitoring for developing adaptive management strategies for polar bears and other ice-dependent species. Other Non-Article Part of Journal/Newspaper Arctic Barents Sea Climate change Sea ice Svalbard Ursus maritimus Unknown Arctic Svalbard Barents Sea Svalbard Archipelago Norway |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
ftsmithonian |
language |
unknown |
topic |
Genetics Evolutionary Biology arctic climate change genetic diversity ice-dependent sea ice loss Ursus maritimus |
spellingShingle |
Genetics Evolutionary Biology arctic climate change genetic diversity ice-dependent sea ice loss Ursus maritimus Simo Njabulo Maduna (11305899) Jon Aars (681814) Ida Fløystad (9233898) Cornelya F. C. Klütsch (9233895) Eve M. L. Zeyl Fiskebeck (11305902) Øystein Wiig (681820) Dorothee Ehrich (2794225) Magnus Andersen (2794222) Lutz Bachmann (65847) Andrew E. Derocher (8479590) Tommi Nyman (680786) Hans Geir Eiken (8029133) Snorre B. Hagen (8029136) SUPPORTING INFORMATION from Sea ice reduction drives genetic differentiation among Barents Sea polar bears |
topic_facet |
Genetics Evolutionary Biology arctic climate change genetic diversity ice-dependent sea ice loss Ursus maritimus |
description |
Loss of Arctic sea ice due to climate change is predicted to reduce both genetic diversity and gene flow in ice-dependent species, with potentially negative consequences for their long-term viability. Here, we tested for the population-genetic impacts of reduced sea ice cover on the polar bear ( Ursus maritimus ) sampled across two decades (1995–2016) from the Svalbard Archipelago, Norway, an area that is affected by rapid sea ice loss in the Arctic Barents Sea. We analysed genetic variation at 22 microsatellite loci for 626 polar bears from four sampling areas within the archipelago. Our results revealed a 3–10% loss of genetic diversity across the study period, accompanied by a near 200% in genetic differentiation across regions. These effects may best be explained by a decrease in gene flow caused by habitat fragmentation due to the loss of sea ice coverage, resulting in increased inbreeding of local polar bears within the focal sampling areas in the Svalbard Archipelago. This study illustrates the importance of genetic monitoring for developing adaptive management strategies for polar bears and other ice-dependent species. |
format |
Other Non-Article Part of Journal/Newspaper |
author |
Simo Njabulo Maduna (11305899) Jon Aars (681814) Ida Fløystad (9233898) Cornelya F. C. Klütsch (9233895) Eve M. L. Zeyl Fiskebeck (11305902) Øystein Wiig (681820) Dorothee Ehrich (2794225) Magnus Andersen (2794222) Lutz Bachmann (65847) Andrew E. Derocher (8479590) Tommi Nyman (680786) Hans Geir Eiken (8029133) Snorre B. Hagen (8029136) |
author_facet |
Simo Njabulo Maduna (11305899) Jon Aars (681814) Ida Fløystad (9233898) Cornelya F. C. Klütsch (9233895) Eve M. L. Zeyl Fiskebeck (11305902) Øystein Wiig (681820) Dorothee Ehrich (2794225) Magnus Andersen (2794222) Lutz Bachmann (65847) Andrew E. Derocher (8479590) Tommi Nyman (680786) Hans Geir Eiken (8029133) Snorre B. Hagen (8029136) |
author_sort |
Simo Njabulo Maduna (11305899) |
title |
SUPPORTING INFORMATION from Sea ice reduction drives genetic differentiation among Barents Sea polar bears |
title_short |
SUPPORTING INFORMATION from Sea ice reduction drives genetic differentiation among Barents Sea polar bears |
title_full |
SUPPORTING INFORMATION from Sea ice reduction drives genetic differentiation among Barents Sea polar bears |
title_fullStr |
SUPPORTING INFORMATION from Sea ice reduction drives genetic differentiation among Barents Sea polar bears |
title_full_unstemmed |
SUPPORTING INFORMATION from Sea ice reduction drives genetic differentiation among Barents Sea polar bears |
title_sort |
supporting information from sea ice reduction drives genetic differentiation among barents sea polar bears |
publishDate |
2021 |
url |
https://doi.org/10.6084/m9.figshare.15656607.v1 |
geographic |
Arctic Svalbard Barents Sea Svalbard Archipelago Norway |
geographic_facet |
Arctic Svalbard Barents Sea Svalbard Archipelago Norway |
genre |
Arctic Barents Sea Climate change Sea ice Svalbard Ursus maritimus |
genre_facet |
Arctic Barents Sea Climate change Sea ice Svalbard Ursus maritimus |
op_relation |
https://figshare.com/articles/journal_contribution/SUPPORTING_INFORMATION_from_Sea_ice_reduction_drives_genetic_differentiation_among_Barents_Sea_polar_bears/15656607 doi:10.6084/m9.figshare.15656607.v1 |
op_rights |
CC BY 4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.6084/m9.figshare.15656607.v1 |
_version_ |
1766322755896082432 |