Arctic warming drives striking twenty-first century ecosystem shifts in Great Slave Lake (Subarctic Canada), North America's deepest lake
Great Slave Lake (GSL), one of the world's largest and deepest lakes, has undergone an aquatic ecosystem transformation in response to twenty-first-century accelerated Arctic warming that is unparalleled in at least the past two centuries. Algal remains from four high-resolution palaeolimnologi...
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ftpubmed:oai:pubmedcentral.nih.gov:10509573 2023-10-09T21:48:45+02:00 Arctic warming drives striking twenty-first century ecosystem shifts in Great Slave Lake (Subarctic Canada), North America's deepest lake Rühland, Kathleen M. Evans, Marlene Smol, John P. 2023-09-20 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10509573/ https://doi.org/10.1098/rspb.2023.1252 en eng The Royal Society http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10509573/ http://dx.doi.org/10.1098/rspb.2023.1252 © 2023 The Authors. https://creativecommons.org/licenses/by/4.0/Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, provided the original author and source are credited. Proc Biol Sci Ecology Text 2023 ftpubmed https://doi.org/10.1098/rspb.2023.1252 2023-09-24T00:55:55Z Great Slave Lake (GSL), one of the world's largest and deepest lakes, has undergone an aquatic ecosystem transformation in response to twenty-first-century accelerated Arctic warming that is unparalleled in at least the past two centuries. Algal remains from four high-resolution palaeolimnological records retrieved from the West Basin provide baseline limnological data that we compared with historical phycological surveys undertaken on GSL between the 1940s and 1990s. We document the rapid restructuring of algal community composition ca 2000 CE that is consistent with recent increases in regional air temperature and declines in ice cover and wind speed, that collectively altered habitats for aquatic biota. This new limnological regime initiated the first observation of scaled chrysophytes and favoured the rapid proliferation of small planktonic cyclotelloid diatoms which replaced the long-established dominance of large filamentous Aulacoseira islandica in West Basin sedimentary records. Such abrupt transformations in the primary producers of this socioecologically valuable ‘northern Great Lake’ may have widespread implications for the entire food web with unknown consequences for aquatic ecosystem functioning and fisheries, which First Nations, Métis and other northern communities depend upon, pointing to the need for new studies. Text Arctic First Nations Great Slave Lake Subarctic PubMed Central (PMC) Arctic Canada Great Slave Lake ENVELOPE(-114.001,-114.001,61.500,61.500) Lake May ENVELOPE(-119.991,-119.991,59.920,59.920) Proceedings of the Royal Society B: Biological Sciences 290 2007 |
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PubMed Central (PMC) |
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ftpubmed |
language |
English |
topic |
Ecology |
spellingShingle |
Ecology Rühland, Kathleen M. Evans, Marlene Smol, John P. Arctic warming drives striking twenty-first century ecosystem shifts in Great Slave Lake (Subarctic Canada), North America's deepest lake |
topic_facet |
Ecology |
description |
Great Slave Lake (GSL), one of the world's largest and deepest lakes, has undergone an aquatic ecosystem transformation in response to twenty-first-century accelerated Arctic warming that is unparalleled in at least the past two centuries. Algal remains from four high-resolution palaeolimnological records retrieved from the West Basin provide baseline limnological data that we compared with historical phycological surveys undertaken on GSL between the 1940s and 1990s. We document the rapid restructuring of algal community composition ca 2000 CE that is consistent with recent increases in regional air temperature and declines in ice cover and wind speed, that collectively altered habitats for aquatic biota. This new limnological regime initiated the first observation of scaled chrysophytes and favoured the rapid proliferation of small planktonic cyclotelloid diatoms which replaced the long-established dominance of large filamentous Aulacoseira islandica in West Basin sedimentary records. Such abrupt transformations in the primary producers of this socioecologically valuable ‘northern Great Lake’ may have widespread implications for the entire food web with unknown consequences for aquatic ecosystem functioning and fisheries, which First Nations, Métis and other northern communities depend upon, pointing to the need for new studies. |
format |
Text |
author |
Rühland, Kathleen M. Evans, Marlene Smol, John P. |
author_facet |
Rühland, Kathleen M. Evans, Marlene Smol, John P. |
author_sort |
Rühland, Kathleen M. |
title |
Arctic warming drives striking twenty-first century ecosystem shifts in Great Slave Lake (Subarctic Canada), North America's deepest lake |
title_short |
Arctic warming drives striking twenty-first century ecosystem shifts in Great Slave Lake (Subarctic Canada), North America's deepest lake |
title_full |
Arctic warming drives striking twenty-first century ecosystem shifts in Great Slave Lake (Subarctic Canada), North America's deepest lake |
title_fullStr |
Arctic warming drives striking twenty-first century ecosystem shifts in Great Slave Lake (Subarctic Canada), North America's deepest lake |
title_full_unstemmed |
Arctic warming drives striking twenty-first century ecosystem shifts in Great Slave Lake (Subarctic Canada), North America's deepest lake |
title_sort |
arctic warming drives striking twenty-first century ecosystem shifts in great slave lake (subarctic canada), north america's deepest lake |
publisher |
The Royal Society |
publishDate |
2023 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10509573/ https://doi.org/10.1098/rspb.2023.1252 |
long_lat |
ENVELOPE(-114.001,-114.001,61.500,61.500) ENVELOPE(-119.991,-119.991,59.920,59.920) |
geographic |
Arctic Canada Great Slave Lake Lake May |
geographic_facet |
Arctic Canada Great Slave Lake Lake May |
genre |
Arctic First Nations Great Slave Lake Subarctic |
genre_facet |
Arctic First Nations Great Slave Lake Subarctic |
op_source |
Proc Biol Sci |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10509573/ http://dx.doi.org/10.1098/rspb.2023.1252 |
op_rights |
© 2023 The Authors. https://creativecommons.org/licenses/by/4.0/Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, provided the original author and source are credited. |
op_doi |
https://doi.org/10.1098/rspb.2023.1252 |
container_title |
Proceedings of the Royal Society B: Biological Sciences |
container_volume |
290 |
container_issue |
2007 |
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1779311824165928960 |