Deep demersal fish communities respond rapidly to warming in a frontal region between Arctic and Atlantic waters
Abstract The assessment of climate impact on marine communities dwelling deeper than the well‐studied shelf seas has been hampered by the lack of long‐term data. For a long time, the prevailing expectation has been that thermal stability in deep ocean layers will delay ecosystem responses to warming...
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crwiley:10.1111/gcb.16113 2024-09-15T18:02:14+00:00 Deep demersal fish communities respond rapidly to warming in a frontal region between Arctic and Atlantic waters Emblemsvåg, Margrete Werner, Karl Michael Núñez‐Riboni, Ismael Frelat, Romain Torp Christensen, Helle Fock, Heino O. Primicerio, Raul 2022 http://dx.doi.org/10.1111/gcb.16113 https://onlinelibrary.wiley.com/doi/pdf/10.1111/gcb.16113 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/gcb.16113 en eng Wiley http://creativecommons.org/licenses/by-nc-nd/4.0/ Global Change Biology volume 28, issue 9, page 2979-2990 ISSN 1354-1013 1365-2486 journal-article 2022 crwiley https://doi.org/10.1111/gcb.16113 2024-08-15T04:18:06Z Abstract The assessment of climate impact on marine communities dwelling deeper than the well‐studied shelf seas has been hampered by the lack of long‐term data. For a long time, the prevailing expectation has been that thermal stability in deep ocean layers will delay ecosystem responses to warming. Few observational studies have challenged this view and indicated that deep organisms can respond exceptionally fast to physical change at the sea surface. To address the depth‐specific impact of climate change, we investigated spatio‐temporal changes in fish community structure along a bathymetry gradient of 150–1500 m between 1998 and 2016 in East Greenland. Here, the Arctic East Greenland Current and the Atlantic Irminger Current meet and mix, representing a sub‐Arctic transition zone. We found the strongest signals of community reorganizations at depths between 350 and 1000 m and only weak responses in the shallowest and deepest regions. Changes were in synchrony with atmospheric warming, loss in sea ice and variability in physical sea surface conditions both within our study region and North of the Denmark Strait. These results suggest that interannual variability and long‐term climate trends of the larger ecoregion can rapidly affect fish communities down to 1000‐m depth through atmospheric ocean coupling and food web interactions. Article in Journal/Newspaper Climate change Denmark Strait East Greenland east greenland current Greenland Sea ice Wiley Online Library Global Change Biology |
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Abstract The assessment of climate impact on marine communities dwelling deeper than the well‐studied shelf seas has been hampered by the lack of long‐term data. For a long time, the prevailing expectation has been that thermal stability in deep ocean layers will delay ecosystem responses to warming. Few observational studies have challenged this view and indicated that deep organisms can respond exceptionally fast to physical change at the sea surface. To address the depth‐specific impact of climate change, we investigated spatio‐temporal changes in fish community structure along a bathymetry gradient of 150–1500 m between 1998 and 2016 in East Greenland. Here, the Arctic East Greenland Current and the Atlantic Irminger Current meet and mix, representing a sub‐Arctic transition zone. We found the strongest signals of community reorganizations at depths between 350 and 1000 m and only weak responses in the shallowest and deepest regions. Changes were in synchrony with atmospheric warming, loss in sea ice and variability in physical sea surface conditions both within our study region and North of the Denmark Strait. These results suggest that interannual variability and long‐term climate trends of the larger ecoregion can rapidly affect fish communities down to 1000‐m depth through atmospheric ocean coupling and food web interactions. |
format |
Article in Journal/Newspaper |
author |
Emblemsvåg, Margrete Werner, Karl Michael Núñez‐Riboni, Ismael Frelat, Romain Torp Christensen, Helle Fock, Heino O. Primicerio, Raul |
spellingShingle |
Emblemsvåg, Margrete Werner, Karl Michael Núñez‐Riboni, Ismael Frelat, Romain Torp Christensen, Helle Fock, Heino O. Primicerio, Raul Deep demersal fish communities respond rapidly to warming in a frontal region between Arctic and Atlantic waters |
author_facet |
Emblemsvåg, Margrete Werner, Karl Michael Núñez‐Riboni, Ismael Frelat, Romain Torp Christensen, Helle Fock, Heino O. Primicerio, Raul |
author_sort |
Emblemsvåg, Margrete |
title |
Deep demersal fish communities respond rapidly to warming in a frontal region between Arctic and Atlantic waters |
title_short |
Deep demersal fish communities respond rapidly to warming in a frontal region between Arctic and Atlantic waters |
title_full |
Deep demersal fish communities respond rapidly to warming in a frontal region between Arctic and Atlantic waters |
title_fullStr |
Deep demersal fish communities respond rapidly to warming in a frontal region between Arctic and Atlantic waters |
title_full_unstemmed |
Deep demersal fish communities respond rapidly to warming in a frontal region between Arctic and Atlantic waters |
title_sort |
deep demersal fish communities respond rapidly to warming in a frontal region between arctic and atlantic waters |
publisher |
Wiley |
publishDate |
2022 |
url |
http://dx.doi.org/10.1111/gcb.16113 https://onlinelibrary.wiley.com/doi/pdf/10.1111/gcb.16113 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/gcb.16113 |
genre |
Climate change Denmark Strait East Greenland east greenland current Greenland Sea ice |
genre_facet |
Climate change Denmark Strait East Greenland east greenland current Greenland Sea ice |
op_source |
Global Change Biology volume 28, issue 9, page 2979-2990 ISSN 1354-1013 1365-2486 |
op_rights |
http://creativecommons.org/licenses/by-nc-nd/4.0/ |
op_doi |
https://doi.org/10.1111/gcb.16113 |
container_title |
Global Change Biology |
_version_ |
1810439707963686912 |