Subpolar gyre and temperature drive boreal fish abundance in Greenland waters
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 variabili...
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2021
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Online Access: | https://orbit.dtu.dk/en/publications/bf082e0e-7ca1-4160-a6a8-f2468445a259 https://doi.org/10.1111/faf.12512 https://backend.orbit.dtu.dk/ws/files/277298721/SSRN_id3895732.pdf |
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ftdtupubl:oai:pure.atira.dk:publications/bf082e0e-7ca1-4160-a6a8-f2468445a259 2024-06-23T07:53:12+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 2021 application/pdf https://orbit.dtu.dk/en/publications/bf082e0e-7ca1-4160-a6a8-f2468445a259 https://doi.org/10.1111/faf.12512 https://backend.orbit.dtu.dk/ws/files/277298721/SSRN_id3895732.pdf eng eng https://orbit.dtu.dk/en/publications/bf082e0e-7ca1-4160-a6a8-f2468445a259 info:eu-repo/semantics/openAccess Post , S , Werner , K M , Núñez-Riboni , I , Chafik , L , Hátún , H & Jansen , T 2021 , ' Subpolar gyre and temperature drive boreal fish abundance in Greenland waters ' , Fish and Fisheries , vol. 22 , no. 1 , pp. 161-174 . https://doi.org/10.1111/faf.12512 Environmental drivers GAM Irminger-Labrador seas Lagged response Trawl survey Water density /dk/atira/pure/sustainabledevelopmentgoals/climate_action name=SDG 13 - Climate Action /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water article 2021 ftdtupubl https://doi.org/10.1111/faf.12512 2024-06-11T14:55:44Z 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 Technical University of Denmark: DTU Orbit Greenland Irminger Sea ENVELOPE(-34.041,-34.041,63.054,63.054) Gam ENVELOPE(-57.955,-57.955,-61.923,-61.923) Fish and Fisheries 22 1 161 174 |
institution |
Open Polar |
collection |
Technical University of Denmark: DTU Orbit |
op_collection_id |
ftdtupubl |
language |
English |
topic |
Environmental drivers GAM Irminger-Labrador seas Lagged response Trawl survey Water density /dk/atira/pure/sustainabledevelopmentgoals/climate_action name=SDG 13 - Climate Action /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water |
spellingShingle |
Environmental drivers GAM Irminger-Labrador seas Lagged response Trawl survey Water density /dk/atira/pure/sustainabledevelopmentgoals/climate_action name=SDG 13 - Climate Action /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water 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 |
topic_facet |
Environmental drivers GAM Irminger-Labrador seas Lagged response Trawl survey Water density /dk/atira/pure/sustainabledevelopmentgoals/climate_action name=SDG 13 - Climate Action /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water |
description |
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. |
format |
Article in Journal/Newspaper |
author |
Post, Søren Werner, Karl Michael Núñez-Riboni, Ismael Chafik, Léon Hátún, Hjálmar Jansen, Teunis |
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 |
publishDate |
2021 |
url |
https://orbit.dtu.dk/en/publications/bf082e0e-7ca1-4160-a6a8-f2468445a259 https://doi.org/10.1111/faf.12512 https://backend.orbit.dtu.dk/ws/files/277298721/SSRN_id3895732.pdf |
long_lat |
ENVELOPE(-34.041,-34.041,63.054,63.054) ENVELOPE(-57.955,-57.955,-61.923,-61.923) |
geographic |
Greenland Irminger Sea Gam |
geographic_facet |
Greenland Irminger Sea Gam |
genre |
Greenland North Atlantic |
genre_facet |
Greenland North Atlantic |
op_source |
Post , S , Werner , K M , Núñez-Riboni , I , Chafik , L , Hátún , H & Jansen , T 2021 , ' Subpolar gyre and temperature drive boreal fish abundance in Greenland waters ' , Fish and Fisheries , vol. 22 , no. 1 , pp. 161-174 . https://doi.org/10.1111/faf.12512 |
op_relation |
https://orbit.dtu.dk/en/publications/bf082e0e-7ca1-4160-a6a8-f2468445a259 |
op_rights |
info:eu-repo/semantics/openAccess |
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_ |
1802644756931543040 |