West Greenland ichthyoplankton and how melting glaciers could allow Arctic cod larvae to survive extreme summer temperatures
Climate change is rapidly modifying marine fish assemblages in the Arctic. As fish eggs and larvae have a narrower thermal tolerance than nonreproductive adults, their response to increasing temperatures is likely one of the main drivers of these changes. In this study, we described ichthyoplankton...
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ftdoajarticles:oai:doaj.org/article:8629a941d3ac4c6198f51abaffe861c9 2023-05-15T14:23:38+02:00 West Greenland ichthyoplankton and how melting glaciers could allow Arctic cod larvae to survive extreme summer temperatures Caroline Bouchard Agathe Charbogne Fabienne Baumgartner Sarah M. Maes 2021-03-01T00:00:00Z https://doi.org/10.1139/as-2020-0019 https://doaj.org/article/8629a941d3ac4c6198f51abaffe861c9 EN FR eng fre Canadian Science Publishing https://doi.org/10.1139/as-2020-0019 https://doaj.org/toc/2368-7460 doi:10.1139/as-2020-0019 2368-7460 https://doaj.org/article/8629a941d3ac4c6198f51abaffe861c9 Arctic Science, Vol 7, Iss 1, Pp 217-239 (2021) early life stages polar cod boreogadus saida fjords recruitment Environmental sciences GE1-350 Environmental engineering TA170-171 article 2021 ftdoajarticles https://doi.org/10.1139/as-2020-0019 2022-12-31T10:24:11Z Climate change is rapidly modifying marine fish assemblages in the Arctic. As fish eggs and larvae have a narrower thermal tolerance than nonreproductive adults, their response to increasing temperatures is likely one of the main drivers of these changes. In this study, we described ichthyoplankton assemblages in West Greenland between 62 and 73 °N, during summers 2017–2019, and investigated the relationship between sea surface temperature in the spring and summer and the survival of Arctic cod (Boreogadus saida (Lepechin, 1774)) early life stages over the hatching season. Warm years were associated with partial recruitment failures resulting from thermal stress to the eggs and larvae hatched late in the season. Using past environmental conditions, we forecasted an imminent decline in Arctic cod recruitment in the regions of Uummannaq and Disko Bay. Observations from fjords suggested that glacial meltwater could create a subsurface thermal refuge allowing Arctic cod larvae to survive despite very high summer sea surface temperature (ca. 10 °C). As the Greenland ice sheet is melting at an unprecedented speed, the mechanism underlying the “glacial meltwater summer refuge hypothesis” could curb some of the negative effects of ocean warming on the survival of young Arctic cod in West Greenland and other Arctic fjord systems. Article in Journal/Newspaper Arctic Arctic cod Arctic Boreogadus saida Climate change Disko Bay Greenland Ice Sheet polar cod Uummannaq Directory of Open Access Journals: DOAJ Articles Arctic Greenland Arctic Science 7 1 217 239 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English French |
topic |
early life stages polar cod boreogadus saida fjords recruitment Environmental sciences GE1-350 Environmental engineering TA170-171 |
spellingShingle |
early life stages polar cod boreogadus saida fjords recruitment Environmental sciences GE1-350 Environmental engineering TA170-171 Caroline Bouchard Agathe Charbogne Fabienne Baumgartner Sarah M. Maes West Greenland ichthyoplankton and how melting glaciers could allow Arctic cod larvae to survive extreme summer temperatures |
topic_facet |
early life stages polar cod boreogadus saida fjords recruitment Environmental sciences GE1-350 Environmental engineering TA170-171 |
description |
Climate change is rapidly modifying marine fish assemblages in the Arctic. As fish eggs and larvae have a narrower thermal tolerance than nonreproductive adults, their response to increasing temperatures is likely one of the main drivers of these changes. In this study, we described ichthyoplankton assemblages in West Greenland between 62 and 73 °N, during summers 2017–2019, and investigated the relationship between sea surface temperature in the spring and summer and the survival of Arctic cod (Boreogadus saida (Lepechin, 1774)) early life stages over the hatching season. Warm years were associated with partial recruitment failures resulting from thermal stress to the eggs and larvae hatched late in the season. Using past environmental conditions, we forecasted an imminent decline in Arctic cod recruitment in the regions of Uummannaq and Disko Bay. Observations from fjords suggested that glacial meltwater could create a subsurface thermal refuge allowing Arctic cod larvae to survive despite very high summer sea surface temperature (ca. 10 °C). As the Greenland ice sheet is melting at an unprecedented speed, the mechanism underlying the “glacial meltwater summer refuge hypothesis” could curb some of the negative effects of ocean warming on the survival of young Arctic cod in West Greenland and other Arctic fjord systems. |
format |
Article in Journal/Newspaper |
author |
Caroline Bouchard Agathe Charbogne Fabienne Baumgartner Sarah M. Maes |
author_facet |
Caroline Bouchard Agathe Charbogne Fabienne Baumgartner Sarah M. Maes |
author_sort |
Caroline Bouchard |
title |
West Greenland ichthyoplankton and how melting glaciers could allow Arctic cod larvae to survive extreme summer temperatures |
title_short |
West Greenland ichthyoplankton and how melting glaciers could allow Arctic cod larvae to survive extreme summer temperatures |
title_full |
West Greenland ichthyoplankton and how melting glaciers could allow Arctic cod larvae to survive extreme summer temperatures |
title_fullStr |
West Greenland ichthyoplankton and how melting glaciers could allow Arctic cod larvae to survive extreme summer temperatures |
title_full_unstemmed |
West Greenland ichthyoplankton and how melting glaciers could allow Arctic cod larvae to survive extreme summer temperatures |
title_sort |
west greenland ichthyoplankton and how melting glaciers could allow arctic cod larvae to survive extreme summer temperatures |
publisher |
Canadian Science Publishing |
publishDate |
2021 |
url |
https://doi.org/10.1139/as-2020-0019 https://doaj.org/article/8629a941d3ac4c6198f51abaffe861c9 |
geographic |
Arctic Greenland |
geographic_facet |
Arctic Greenland |
genre |
Arctic Arctic cod Arctic Boreogadus saida Climate change Disko Bay Greenland Ice Sheet polar cod Uummannaq |
genre_facet |
Arctic Arctic cod Arctic Boreogadus saida Climate change Disko Bay Greenland Ice Sheet polar cod Uummannaq |
op_source |
Arctic Science, Vol 7, Iss 1, Pp 217-239 (2021) |
op_relation |
https://doi.org/10.1139/as-2020-0019 https://doaj.org/toc/2368-7460 doi:10.1139/as-2020-0019 2368-7460 https://doaj.org/article/8629a941d3ac4c6198f51abaffe861c9 |
op_doi |
https://doi.org/10.1139/as-2020-0019 |
container_title |
Arctic Science |
container_volume |
7 |
container_issue |
1 |
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217 |
op_container_end_page |
239 |
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1766296140125306880 |