Migrations and hydrography determine the abundance fluctuations of blue whiting Micromesistius poutassou in the Barents Sea
The Barents Sea is the north-eastern fringe of the distribution of blue whiting (Micromesistius poutassou). Fluctuations in distribution and abundance of blue whiting in the area have been marked. Two hypotheses are put forward to explain these fluctuations. First, rich year classes in the main Atla...
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Online Access: | https://pure.iiasa.ac.at/id/eprint/8539/ https://doi.org/10.1111/j.1365-2419.2008.00472.x |
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ftiiasalaxenburg:oai:pure.iiasa.ac.at:8539 2023-05-15T15:38:26+02:00 Migrations and hydrography determine the abundance fluctuations of blue whiting Micromesistius poutassou in the Barents Sea Heino, M. Engelhard, G.H. Godoe, O.R. 2008-03 https://pure.iiasa.ac.at/id/eprint/8539/ https://doi.org/10.1111/j.1365-2419.2008.00472.x unknown Wiley Heino, M. <https://pure.iiasa.ac.at/view/iiasa/122.html> orcid:0000-0003-2928-3940 , Engelhard, G.H., & Godoe, O.R. <https://pure.iiasa.ac.at/view/iiasa/1287.html> (2008). Migrations and hydrography determine the abundance fluctuations of blue whiting Micromesistius poutassou in the Barents Sea. Fisheries Oceanography 17 (2) 153-163. 10.1111/j.1365-2419.2008.00472.x <https://doi.org/10.1111/j.1365-2419.2008.00472.x>. doi:10.1111/j.1365-2419.2008.00472.x Article PeerReviewed 2008 ftiiasalaxenburg https://doi.org/10.1111/j.1365-2419.2008.00472.x 2023-04-07T14:48:24Z The Barents Sea is the north-eastern fringe of the distribution of blue whiting (Micromesistius poutassou). Fluctuations in distribution and abundance of blue whiting in the area have been marked. Two hypotheses are put forward to explain these fluctuations. First, rich year classes in the main Atlantic stock of blue whiting may contribute to increased abundance in the Barents Sea. Second, variations in hydrography, such as influx of warm Atlantic water, may be particularly important in this fringe area. We investigated these hypotheses using data from bottom trawl surveys conducted during the period 1981-2006. Variations in abundance (measured either as incidence or density) and distribution were correlated with recruitment in the Atlantic stock of blue whiting as well as hydrographic conditions. Regression analyses indicated that the abundance fluctuations are primarily determined by variations in recruitment of Atlantic blue whiting, a strong year class leading to high abundance in the Barents Sea the year after spawning. However, salinity anomaly in the Fugloya-Bear Island transect during the previous year, an indicator of high inflow of Atlantic water, had also a significant, positive effect. Thus, the data suggested a climatic modulation of dynamics that were primarily determined by recruitment of blue whiting in the main Atlantic stock. Analyses of size structure as well as earlier studies on population genetics supported this conclusion. Article in Journal/Newspaper Barents Sea Bear Island Fugloy* IIASA PURE (International Institute of Applied Systems Analysis: PUblications REpository) Barents Sea Bear Island ENVELOPE(-67.250,-67.250,-68.151,-68.151) Fisheries Oceanography 17 2 153 163 |
institution |
Open Polar |
collection |
IIASA PURE (International Institute of Applied Systems Analysis: PUblications REpository) |
op_collection_id |
ftiiasalaxenburg |
language |
unknown |
description |
The Barents Sea is the north-eastern fringe of the distribution of blue whiting (Micromesistius poutassou). Fluctuations in distribution and abundance of blue whiting in the area have been marked. Two hypotheses are put forward to explain these fluctuations. First, rich year classes in the main Atlantic stock of blue whiting may contribute to increased abundance in the Barents Sea. Second, variations in hydrography, such as influx of warm Atlantic water, may be particularly important in this fringe area. We investigated these hypotheses using data from bottom trawl surveys conducted during the period 1981-2006. Variations in abundance (measured either as incidence or density) and distribution were correlated with recruitment in the Atlantic stock of blue whiting as well as hydrographic conditions. Regression analyses indicated that the abundance fluctuations are primarily determined by variations in recruitment of Atlantic blue whiting, a strong year class leading to high abundance in the Barents Sea the year after spawning. However, salinity anomaly in the Fugloya-Bear Island transect during the previous year, an indicator of high inflow of Atlantic water, had also a significant, positive effect. Thus, the data suggested a climatic modulation of dynamics that were primarily determined by recruitment of blue whiting in the main Atlantic stock. Analyses of size structure as well as earlier studies on population genetics supported this conclusion. |
format |
Article in Journal/Newspaper |
author |
Heino, M. Engelhard, G.H. Godoe, O.R. |
spellingShingle |
Heino, M. Engelhard, G.H. Godoe, O.R. Migrations and hydrography determine the abundance fluctuations of blue whiting Micromesistius poutassou in the Barents Sea |
author_facet |
Heino, M. Engelhard, G.H. Godoe, O.R. |
author_sort |
Heino, M. |
title |
Migrations and hydrography determine the abundance fluctuations of blue whiting Micromesistius poutassou in the Barents Sea |
title_short |
Migrations and hydrography determine the abundance fluctuations of blue whiting Micromesistius poutassou in the Barents Sea |
title_full |
Migrations and hydrography determine the abundance fluctuations of blue whiting Micromesistius poutassou in the Barents Sea |
title_fullStr |
Migrations and hydrography determine the abundance fluctuations of blue whiting Micromesistius poutassou in the Barents Sea |
title_full_unstemmed |
Migrations and hydrography determine the abundance fluctuations of blue whiting Micromesistius poutassou in the Barents Sea |
title_sort |
migrations and hydrography determine the abundance fluctuations of blue whiting micromesistius poutassou in the barents sea |
publisher |
Wiley |
publishDate |
2008 |
url |
https://pure.iiasa.ac.at/id/eprint/8539/ https://doi.org/10.1111/j.1365-2419.2008.00472.x |
long_lat |
ENVELOPE(-67.250,-67.250,-68.151,-68.151) |
geographic |
Barents Sea Bear Island |
geographic_facet |
Barents Sea Bear Island |
genre |
Barents Sea Bear Island Fugloy* |
genre_facet |
Barents Sea Bear Island Fugloy* |
op_relation |
Heino, M. <https://pure.iiasa.ac.at/view/iiasa/122.html> orcid:0000-0003-2928-3940 , Engelhard, G.H., & Godoe, O.R. <https://pure.iiasa.ac.at/view/iiasa/1287.html> (2008). Migrations and hydrography determine the abundance fluctuations of blue whiting Micromesistius poutassou in the Barents Sea. Fisheries Oceanography 17 (2) 153-163. 10.1111/j.1365-2419.2008.00472.x <https://doi.org/10.1111/j.1365-2419.2008.00472.x>. doi:10.1111/j.1365-2419.2008.00472.x |
op_doi |
https://doi.org/10.1111/j.1365-2419.2008.00472.x |
container_title |
Fisheries Oceanography |
container_volume |
17 |
container_issue |
2 |
container_start_page |
153 |
op_container_end_page |
163 |
_version_ |
1766369345340964864 |