Polar bear's range dynamics and survival in the Holocene
Polar bear (Ursus maritimus) is the apex predator of the Arctic, largely dependent on sea-ice. The expected disappearance of the ice cover of the Arctic seas by the mid 21st century is predicted to cause a dramatic decrease in the global range and population size of the species. To place this scenar...
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2023
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ftuniaarhuspubl:oai:pure.atira.dk:publications/447c72e1-4520-460e-9963-6545a5408596 2023-10-29T02:33:22+01:00 Polar bear's range dynamics and survival in the Holocene Seppä, Heikki Seidenkrantz, Marit Solveig Caissie, Beth Macias Fauria, Marc 2023-10 https://pure.au.dk/portal/da/publications/polar-bears-range-dynamics-and-survival-in-the-holocene(447c72e1-4520-460e-9963-6545a5408596).html https://doi.org/10.1016/j.quascirev.2023.108277 eng eng info:eu-repo/semantics/restrictedAccess Seppä , H , Seidenkrantz , M S , Caissie , B & Macias Fauria , M 2023 , ' Polar bear's range dynamics and survival in the Holocene ' , Quaternary Science Reviews , vol. 317 , 108277 . https://doi.org/10.1016/j.quascirev.2023.108277 Arctic sea ice Distribution dynamics Fossils Holocene Polar bear article 2023 ftuniaarhuspubl https://doi.org/10.1016/j.quascirev.2023.108277 2023-10-04T22:59:25Z Polar bear (Ursus maritimus) is the apex predator of the Arctic, largely dependent on sea-ice. The expected disappearance of the ice cover of the Arctic seas by the mid 21st century is predicted to cause a dramatic decrease in the global range and population size of the species. To place this scenario against the backdrop of past distribution changes and their causes, we use a fossil dataset to investigate the polar bear's past distribution dynamics during the Late Glacial and the Holocene. Fossil results indicate that during the last deglaciation, polar bears were present at the southwestern margin of the Scandinavian Ice Sheet, surviving until the earliest Holocene. There are no Arctic polar bear findings from 8000–6000 years ago (8–6 ka), the Holocene's warmest period. However, fossils that date from 8-9 ka and 5–6 ka suggest that the species likely survived this period in cold refugia located near the East Siberian Sea, northern Greenland and the Canadian Archipelago. Polar bear range expansion is documented by an increase in fossils during the last 4000 years in tandem with cooling climate and expanding Arctic sea ice. The results document changes in polar bear's distribution in response to Late Glacial and Holocene Arctic temperature and sea ice trends. Article in Journal/Newspaper Arctic Canadian Archipelago East Siberian Sea Greenland Ice Sheet Sea ice Ursus maritimus Aarhus University: Research Quaternary Science Reviews 317 108277 |
institution |
Open Polar |
collection |
Aarhus University: Research |
op_collection_id |
ftuniaarhuspubl |
language |
English |
topic |
Arctic sea ice Distribution dynamics Fossils Holocene Polar bear |
spellingShingle |
Arctic sea ice Distribution dynamics Fossils Holocene Polar bear Seppä, Heikki Seidenkrantz, Marit Solveig Caissie, Beth Macias Fauria, Marc Polar bear's range dynamics and survival in the Holocene |
topic_facet |
Arctic sea ice Distribution dynamics Fossils Holocene Polar bear |
description |
Polar bear (Ursus maritimus) is the apex predator of the Arctic, largely dependent on sea-ice. The expected disappearance of the ice cover of the Arctic seas by the mid 21st century is predicted to cause a dramatic decrease in the global range and population size of the species. To place this scenario against the backdrop of past distribution changes and their causes, we use a fossil dataset to investigate the polar bear's past distribution dynamics during the Late Glacial and the Holocene. Fossil results indicate that during the last deglaciation, polar bears were present at the southwestern margin of the Scandinavian Ice Sheet, surviving until the earliest Holocene. There are no Arctic polar bear findings from 8000–6000 years ago (8–6 ka), the Holocene's warmest period. However, fossils that date from 8-9 ka and 5–6 ka suggest that the species likely survived this period in cold refugia located near the East Siberian Sea, northern Greenland and the Canadian Archipelago. Polar bear range expansion is documented by an increase in fossils during the last 4000 years in tandem with cooling climate and expanding Arctic sea ice. The results document changes in polar bear's distribution in response to Late Glacial and Holocene Arctic temperature and sea ice trends. |
format |
Article in Journal/Newspaper |
author |
Seppä, Heikki Seidenkrantz, Marit Solveig Caissie, Beth Macias Fauria, Marc |
author_facet |
Seppä, Heikki Seidenkrantz, Marit Solveig Caissie, Beth Macias Fauria, Marc |
author_sort |
Seppä, Heikki |
title |
Polar bear's range dynamics and survival in the Holocene |
title_short |
Polar bear's range dynamics and survival in the Holocene |
title_full |
Polar bear's range dynamics and survival in the Holocene |
title_fullStr |
Polar bear's range dynamics and survival in the Holocene |
title_full_unstemmed |
Polar bear's range dynamics and survival in the Holocene |
title_sort |
polar bear's range dynamics and survival in the holocene |
publishDate |
2023 |
url |
https://pure.au.dk/portal/da/publications/polar-bears-range-dynamics-and-survival-in-the-holocene(447c72e1-4520-460e-9963-6545a5408596).html https://doi.org/10.1016/j.quascirev.2023.108277 |
genre |
Arctic Canadian Archipelago East Siberian Sea Greenland Ice Sheet Sea ice Ursus maritimus |
genre_facet |
Arctic Canadian Archipelago East Siberian Sea Greenland Ice Sheet Sea ice Ursus maritimus |
op_source |
Seppä , H , Seidenkrantz , M S , Caissie , B & Macias Fauria , M 2023 , ' Polar bear's range dynamics and survival in the Holocene ' , Quaternary Science Reviews , vol. 317 , 108277 . https://doi.org/10.1016/j.quascirev.2023.108277 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1016/j.quascirev.2023.108277 |
container_title |
Quaternary Science Reviews |
container_volume |
317 |
container_start_page |
108277 |
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1781055376122183680 |