Subpolar gyre and temperature drive boreal fish abundance in Greenland waters
Abstract As result of ocean warming, marine boreal species have shifted their distribution poleward, with increases in abundance at higher latitudes, and declines in abundance at lower latitudes. A key to predict future changes in fish communities is to understand how fish stocks respond to climate...
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crwiley:10.1111/faf.12512 2024-06-02T08:07:18+00:00 Subpolar gyre and temperature drive boreal fish abundance in Greenland waters Post, Søren Werner, Karl Michael Núñez‐Riboni, Ismael Chafik, Léon Hátún, Hjálmar Jansen, Teunis Horizon 2020 Framework Programme Utenriksdepartementet Horizon 2020 Framework Programme 2020 http://dx.doi.org/10.1111/faf.12512 https://onlinelibrary.wiley.com/doi/pdf/10.1111/faf.12512 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/faf.12512 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Fish and Fisheries volume 22, issue 1, page 161-174 ISSN 1467-2960 1467-2979 journal-article 2020 crwiley https://doi.org/10.1111/faf.12512 2024-05-03T10:57:23Z Abstract As result of ocean warming, marine boreal species have shifted their distribution poleward, with increases in abundance at higher latitudes, and declines in abundance at lower latitudes. A key to predict future changes in fish communities is to understand how fish stocks respond to climate variability. Scattered field observations in the first half of the 20th century suggested that boreal fish may coherently invade Greenland waters when temperatures rise, but this hypothesis has remained untested. Therefore, we studied how local temperature variability and the dynamics of the subpolar gyre, a large‐scale driver of oceanic conditions in the North Atlantic, affect abundance of boreal fishes in a region that sharply defines their lower thermal boundary. We analysed information from demersal trawl surveys from 1981 to 2017, for species distributed from shallow shelf to depths of 1,500 m, collected at over 10,000 stations along ~3,000 km of Greenland. Our results show that local temperature and variability of Labrador and Irminger Sea water in the subpolar gyre region drive interdecadal variability of boreal fish abundance in Greenland waters. Although temperature fluctuations were higher in shallow than deep regions, fish abundance changed as quickly in great depths as in shallow depths. This link between physics and biology provides an opportunity for prediction of future trends, which is of utility in Greenland, where fisheries constitute more than 90% of the national export value. Article in Journal/Newspaper Greenland North Atlantic Wiley Online Library Greenland Irminger Sea ENVELOPE(-34.041,-34.041,63.054,63.054) Fish and Fisheries 22 1 161 174 |
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Wiley Online Library |
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English |
description |
Abstract As result of ocean warming, marine boreal species have shifted their distribution poleward, with increases in abundance at higher latitudes, and declines in abundance at lower latitudes. A key to predict future changes in fish communities is to understand how fish stocks respond to climate variability. Scattered field observations in the first half of the 20th century suggested that boreal fish may coherently invade Greenland waters when temperatures rise, but this hypothesis has remained untested. Therefore, we studied how local temperature variability and the dynamics of the subpolar gyre, a large‐scale driver of oceanic conditions in the North Atlantic, affect abundance of boreal fishes in a region that sharply defines their lower thermal boundary. We analysed information from demersal trawl surveys from 1981 to 2017, for species distributed from shallow shelf to depths of 1,500 m, collected at over 10,000 stations along ~3,000 km of Greenland. Our results show that local temperature and variability of Labrador and Irminger Sea water in the subpolar gyre region drive interdecadal variability of boreal fish abundance in Greenland waters. Although temperature fluctuations were higher in shallow than deep regions, fish abundance changed as quickly in great depths as in shallow depths. This link between physics and biology provides an opportunity for prediction of future trends, which is of utility in Greenland, where fisheries constitute more than 90% of the national export value. |
author2 |
Horizon 2020 Framework Programme Utenriksdepartementet Horizon 2020 Framework Programme |
format |
Article in Journal/Newspaper |
author |
Post, Søren Werner, Karl Michael Núñez‐Riboni, Ismael Chafik, Léon Hátún, Hjálmar Jansen, Teunis |
spellingShingle |
Post, Søren Werner, Karl Michael Núñez‐Riboni, Ismael Chafik, Léon Hátún, Hjálmar Jansen, Teunis Subpolar gyre and temperature drive boreal fish abundance in Greenland waters |
author_facet |
Post, Søren Werner, Karl Michael Núñez‐Riboni, Ismael Chafik, Léon Hátún, Hjálmar Jansen, Teunis |
author_sort |
Post, Søren |
title |
Subpolar gyre and temperature drive boreal fish abundance in Greenland waters |
title_short |
Subpolar gyre and temperature drive boreal fish abundance in Greenland waters |
title_full |
Subpolar gyre and temperature drive boreal fish abundance in Greenland waters |
title_fullStr |
Subpolar gyre and temperature drive boreal fish abundance in Greenland waters |
title_full_unstemmed |
Subpolar gyre and temperature drive boreal fish abundance in Greenland waters |
title_sort |
subpolar gyre and temperature drive boreal fish abundance in greenland waters |
publisher |
Wiley |
publishDate |
2020 |
url |
http://dx.doi.org/10.1111/faf.12512 https://onlinelibrary.wiley.com/doi/pdf/10.1111/faf.12512 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/faf.12512 |
long_lat |
ENVELOPE(-34.041,-34.041,63.054,63.054) |
geographic |
Greenland Irminger Sea |
geographic_facet |
Greenland Irminger Sea |
genre |
Greenland North Atlantic |
genre_facet |
Greenland North Atlantic |
op_source |
Fish and Fisheries volume 22, issue 1, page 161-174 ISSN 1467-2960 1467-2979 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/faf.12512 |
container_title |
Fish and Fisheries |
container_volume |
22 |
container_issue |
1 |
container_start_page |
161 |
op_container_end_page |
174 |
_version_ |
1800752358801539072 |