Sea ice reduction drives genetic differentiation among Barents Sea polar bears
Loss of Arctic sea ice owing 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 ( U...
Published in: | Proceedings of the Royal Society B: Biological Sciences |
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Online Access: | https://hdl.handle.net/10037/22827 https://doi.org/10.1098/rspb.2021.1741 |
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ftunivtroemsoe:oai:munin.uit.no:10037/22827 2023-05-15T14:54:15+02:00 Sea ice reduction drives genetic differentiation among Barents Sea polar bears Maduna, Simo Aars, Jon Fløystad, Ida Klutsch, Cornelya Fiskebeck, Eve Marie Louise Zeyl Wiig, Øystein Ehrich, Dorothee Andersen, Magnus Bachmann, Lutz Derocher, Andrew E. Nyman, Tommi Eiken, Hans Geir Hagen, Snorre 2021-09-08 https://hdl.handle.net/10037/22827 https://doi.org/10.1098/rspb.2021.1741 eng eng The Royal Society Proceedings of the Royal Society of London. Biological Sciences Maduna, Aars, Fløystad, Klutsch, Fiskebeck, Wiig, Ehrich, Andersen, Bachmann, Derocher, Nyman, Eiken, Hagen. Sea ice reduction drives genetic differentiation among Barents Sea polar bears. Proceedings of the Royal Society of London. Biological Sciences. 2021;288(1958):1-10 FRIDAID 1932816 doi:10.1098/rspb.2021.1741 0962-8452 1471-2954 https://hdl.handle.net/10037/22827 openAccess Copyright 2021 The Author(s) VDP::Matematikk og naturvitenskap: 400::Basale biofag: 470::Genetikk og genomikk: 474 VDP::Mathematics and natural scienses: 400::Basic biosciences: 470::Genetics and genomics: 474 VDP::Matematikk og naturvitenskap: 400::Zoologiske og botaniske fag: 480::Økologi: 488 VDP::Mathematics and natural scienses: 400::Zoology and botany: 480::Ecology: 488 Arktis / Arctic Bestandsovervåkning / Population Monitoring Genetisk diversitet / Genetic diversity Klimarett / Climate change Journal article Tidsskriftartikkel Peer reviewed publishedVersion 2021 ftunivtroemsoe https://doi.org/10.1098/rspb.2021.1741 2021-10-27T22:54:44Z Loss of Arctic sea ice owing 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% increase in genetic differentiation across regions. These effects may best be explained by a decrease in gene flow caused by habitat fragmentation owing 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. Article in Journal/Newspaper Arctic Arktis Arktis* Barents Sea Climate change Sea ice Svalbard Ursus maritimus University of Tromsø: Munin Open Research Archive Arctic Barents Sea Norway Svalbard Svalbard Archipelago Proceedings of the Royal Society B: Biological Sciences 288 1958 20211741 |
institution |
Open Polar |
collection |
University of Tromsø: Munin Open Research Archive |
op_collection_id |
ftunivtroemsoe |
language |
English |
topic |
VDP::Matematikk og naturvitenskap: 400::Basale biofag: 470::Genetikk og genomikk: 474 VDP::Mathematics and natural scienses: 400::Basic biosciences: 470::Genetics and genomics: 474 VDP::Matematikk og naturvitenskap: 400::Zoologiske og botaniske fag: 480::Økologi: 488 VDP::Mathematics and natural scienses: 400::Zoology and botany: 480::Ecology: 488 Arktis / Arctic Bestandsovervåkning / Population Monitoring Genetisk diversitet / Genetic diversity Klimarett / Climate change |
spellingShingle |
VDP::Matematikk og naturvitenskap: 400::Basale biofag: 470::Genetikk og genomikk: 474 VDP::Mathematics and natural scienses: 400::Basic biosciences: 470::Genetics and genomics: 474 VDP::Matematikk og naturvitenskap: 400::Zoologiske og botaniske fag: 480::Økologi: 488 VDP::Mathematics and natural scienses: 400::Zoology and botany: 480::Ecology: 488 Arktis / Arctic Bestandsovervåkning / Population Monitoring Genetisk diversitet / Genetic diversity Klimarett / Climate change Maduna, Simo Aars, Jon Fløystad, Ida Klutsch, Cornelya Fiskebeck, Eve Marie Louise Zeyl Wiig, Øystein Ehrich, Dorothee Andersen, Magnus Bachmann, Lutz Derocher, Andrew E. Nyman, Tommi Eiken, Hans Geir Hagen, Snorre Sea ice reduction drives genetic differentiation among Barents Sea polar bears |
topic_facet |
VDP::Matematikk og naturvitenskap: 400::Basale biofag: 470::Genetikk og genomikk: 474 VDP::Mathematics and natural scienses: 400::Basic biosciences: 470::Genetics and genomics: 474 VDP::Matematikk og naturvitenskap: 400::Zoologiske og botaniske fag: 480::Økologi: 488 VDP::Mathematics and natural scienses: 400::Zoology and botany: 480::Ecology: 488 Arktis / Arctic Bestandsovervåkning / Population Monitoring Genetisk diversitet / Genetic diversity Klimarett / Climate change |
description |
Loss of Arctic sea ice owing 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% increase in genetic differentiation across regions. These effects may best be explained by a decrease in gene flow caused by habitat fragmentation owing 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 |
Article in Journal/Newspaper |
author |
Maduna, Simo Aars, Jon Fløystad, Ida Klutsch, Cornelya Fiskebeck, Eve Marie Louise Zeyl Wiig, Øystein Ehrich, Dorothee Andersen, Magnus Bachmann, Lutz Derocher, Andrew E. Nyman, Tommi Eiken, Hans Geir Hagen, Snorre |
author_facet |
Maduna, Simo Aars, Jon Fløystad, Ida Klutsch, Cornelya Fiskebeck, Eve Marie Louise Zeyl Wiig, Øystein Ehrich, Dorothee Andersen, Magnus Bachmann, Lutz Derocher, Andrew E. Nyman, Tommi Eiken, Hans Geir Hagen, Snorre |
author_sort |
Maduna, Simo |
title |
Sea ice reduction drives genetic differentiation among Barents Sea polar bears |
title_short |
Sea ice reduction drives genetic differentiation among Barents Sea polar bears |
title_full |
Sea ice reduction drives genetic differentiation among Barents Sea polar bears |
title_fullStr |
Sea ice reduction drives genetic differentiation among Barents Sea polar bears |
title_full_unstemmed |
Sea ice reduction drives genetic differentiation among Barents Sea polar bears |
title_sort |
sea ice reduction drives genetic differentiation among barents sea polar bears |
publisher |
The Royal Society |
publishDate |
2021 |
url |
https://hdl.handle.net/10037/22827 https://doi.org/10.1098/rspb.2021.1741 |
geographic |
Arctic Barents Sea Norway Svalbard Svalbard Archipelago |
geographic_facet |
Arctic Barents Sea Norway Svalbard Svalbard Archipelago |
genre |
Arctic Arktis Arktis* Barents Sea Climate change Sea ice Svalbard Ursus maritimus |
genre_facet |
Arctic Arktis Arktis* Barents Sea Climate change Sea ice Svalbard Ursus maritimus |
op_relation |
Proceedings of the Royal Society of London. Biological Sciences Maduna, Aars, Fløystad, Klutsch, Fiskebeck, Wiig, Ehrich, Andersen, Bachmann, Derocher, Nyman, Eiken, Hagen. Sea ice reduction drives genetic differentiation among Barents Sea polar bears. Proceedings of the Royal Society of London. Biological Sciences. 2021;288(1958):1-10 FRIDAID 1932816 doi:10.1098/rspb.2021.1741 0962-8452 1471-2954 https://hdl.handle.net/10037/22827 |
op_rights |
openAccess Copyright 2021 The Author(s) |
op_doi |
https://doi.org/10.1098/rspb.2021.1741 |
container_title |
Proceedings of the Royal Society B: Biological Sciences |
container_volume |
288 |
container_issue |
1958 |
container_start_page |
20211741 |
_version_ |
1766325968412082176 |