Global warming triggers the loss of a key Arctic refugium
We document the rapid transformation of one of the Earth's last remaining Arctic refugia, a change that is being driven by global warming. In stark contrast to the amplified warming observed throughout much of the Arctic, the Hudson Bay Lowlands (HBL) of subarctic Canada has maintained cool tem...
Published in: | Proceedings of the Royal Society B: Biological Sciences |
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crroyalsociety:10.1098/rspb.2013.1887 2024-09-30T14:29:43+00:00 Global warming triggers the loss of a key Arctic refugium Rühland, K. M. Paterson, A. M. Keller, W. Michelutti, N. Smol, J. P. 2013 http://dx.doi.org/10.1098/rspb.2013.1887 https://royalsocietypublishing.org/doi/pdf/10.1098/rspb.2013.1887 https://royalsocietypublishing.org/doi/full-xml/10.1098/rspb.2013.1887 en eng The Royal Society https://royalsociety.org/journals/ethics-policies/data-sharing-mining/ Proceedings of the Royal Society B: Biological Sciences volume 280, issue 1772, page 20131887 ISSN 0962-8452 1471-2954 journal-article 2013 crroyalsociety https://doi.org/10.1098/rspb.2013.1887 2024-09-02T04:21:03Z We document the rapid transformation of one of the Earth's last remaining Arctic refugia, a change that is being driven by global warming. In stark contrast to the amplified warming observed throughout much of the Arctic, the Hudson Bay Lowlands (HBL) of subarctic Canada has maintained cool temperatures, largely due to the counteracting effects of persistent sea ice. However, since the mid-1990s, climate of the HBL has passed a tipping point, the pace and magnitude of which is exceptional even by Arctic standards, exceeding the range of regional long-term variability. Using high-resolution, palaeolimnological records of algal remains in dated lake sediment cores, we report that, within this short period of intense warming, striking biological changes have occurred in the region's freshwater ecosystems. The delayed and intense warming in this remote region provides a natural observatory for testing ecosystem resilience under a rapidly changing climate, in the absence of direct anthropogenic influences. The environmental repercussions of this climate change are of global significance, influencing the huge store of carbon in the region's extensive peatlands, the world's southern-most polar bear population that depends upon Hudson Bay sea ice and permafrost for survival, and native communities who rely on this landscape for sustenance. Article in Journal/Newspaper Arctic Climate change Global warming Hudson Bay Ice permafrost Sea ice Subarctic The Royal Society Arctic Canada Hudson Hudson Bay Proceedings of the Royal Society B: Biological Sciences 280 1772 20131887 |
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The Royal Society |
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crroyalsociety |
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English |
description |
We document the rapid transformation of one of the Earth's last remaining Arctic refugia, a change that is being driven by global warming. In stark contrast to the amplified warming observed throughout much of the Arctic, the Hudson Bay Lowlands (HBL) of subarctic Canada has maintained cool temperatures, largely due to the counteracting effects of persistent sea ice. However, since the mid-1990s, climate of the HBL has passed a tipping point, the pace and magnitude of which is exceptional even by Arctic standards, exceeding the range of regional long-term variability. Using high-resolution, palaeolimnological records of algal remains in dated lake sediment cores, we report that, within this short period of intense warming, striking biological changes have occurred in the region's freshwater ecosystems. The delayed and intense warming in this remote region provides a natural observatory for testing ecosystem resilience under a rapidly changing climate, in the absence of direct anthropogenic influences. The environmental repercussions of this climate change are of global significance, influencing the huge store of carbon in the region's extensive peatlands, the world's southern-most polar bear population that depends upon Hudson Bay sea ice and permafrost for survival, and native communities who rely on this landscape for sustenance. |
format |
Article in Journal/Newspaper |
author |
Rühland, K. M. Paterson, A. M. Keller, W. Michelutti, N. Smol, J. P. |
spellingShingle |
Rühland, K. M. Paterson, A. M. Keller, W. Michelutti, N. Smol, J. P. Global warming triggers the loss of a key Arctic refugium |
author_facet |
Rühland, K. M. Paterson, A. M. Keller, W. Michelutti, N. Smol, J. P. |
author_sort |
Rühland, K. M. |
title |
Global warming triggers the loss of a key Arctic refugium |
title_short |
Global warming triggers the loss of a key Arctic refugium |
title_full |
Global warming triggers the loss of a key Arctic refugium |
title_fullStr |
Global warming triggers the loss of a key Arctic refugium |
title_full_unstemmed |
Global warming triggers the loss of a key Arctic refugium |
title_sort |
global warming triggers the loss of a key arctic refugium |
publisher |
The Royal Society |
publishDate |
2013 |
url |
http://dx.doi.org/10.1098/rspb.2013.1887 https://royalsocietypublishing.org/doi/pdf/10.1098/rspb.2013.1887 https://royalsocietypublishing.org/doi/full-xml/10.1098/rspb.2013.1887 |
geographic |
Arctic Canada Hudson Hudson Bay |
geographic_facet |
Arctic Canada Hudson Hudson Bay |
genre |
Arctic Climate change Global warming Hudson Bay Ice permafrost Sea ice Subarctic |
genre_facet |
Arctic Climate change Global warming Hudson Bay Ice permafrost Sea ice Subarctic |
op_source |
Proceedings of the Royal Society B: Biological Sciences volume 280, issue 1772, page 20131887 ISSN 0962-8452 1471-2954 |
op_rights |
https://royalsociety.org/journals/ethics-policies/data-sharing-mining/ |
op_doi |
https://doi.org/10.1098/rspb.2013.1887 |
container_title |
Proceedings of the Royal Society B: Biological Sciences |
container_volume |
280 |
container_issue |
1772 |
container_start_page |
20131887 |
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1811634934362669056 |