Using multivariate autoregressive state-space models to examine stock structure of Greenland halibut in the North Atlantic
Accurate information on population structure is essential for effective fisheries management. Greenland halibut (Reinhardtius hippoglossoides) in the North Atlantic is managed as four separate offshore stocks. We use Multivariate Autoregressive State-Space (MARSS) models to assess population structu...
Published in: | Fisheries Management and Ecology |
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Language: | English |
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Online Access: | https://hdl.handle.net/11250/3098138 https://doi.org/10.1111/fme.12639 |
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ftimr:oai:imr.brage.unit.no:11250/3098138 2023-11-12T04:13:16+01:00 Using multivariate autoregressive state-space models to examine stock structure of Greenland halibut in the North Atlantic Úbeda, J. Nogueira, A. Tolimieri, N. Vihtakari, Mikko Elvarsson, B. Treble, M. Boje, J. 2023 application/pdf https://hdl.handle.net/11250/3098138 https://doi.org/10.1111/fme.12639 eng eng Fisheries Management and Ecology. 2023, 30 (5), 521-535. urn:issn:0969-997X https://hdl.handle.net/11250/3098138 https://doi.org/10.1111/fme.12639 cristin:2161681 521-535 30 Fisheries Management and Ecology 5 Peer reviewed Journal article 2023 ftimr https://doi.org/10.1111/fme.12639 2023-10-25T22:47:27Z Accurate information on population structure is essential for effective fisheries management. Greenland halibut (Reinhardtius hippoglossoides) in the North Atlantic is managed as four separate offshore stocks. We use Multivariate Autoregressive State-Space (MARSS) models to assess population structure by means of abundance and biomass trends in four regions (Norwegian Sea, Iceland, Southeast Greenland, and Northwest Atlantic) where three offshore stocks are recognized: (1) Baffin Bay–Davis Strait (Northwest Atlantic stock), (2) Southeast Greenland and Iceland (West Nordic stock (WNS)), and (3) the Barents and Norwegian Seas (Northeast Arctic stock). We formulated model alternatives, using bottom trawl survey data from each region for 1996–2019, to evaluate support for different population structures. Abundance and biomass observations from each region were linked to growth rate parameters in MARSS models and the impact of climate (North Atlantic Oscillation Index) and fishing (commercial catches) on stock dynamics was investigated. Top models identified the Northwest Atlantic as an independent population. Best-fit models treated Greenland halibut in the WNS as two independent populations (east and west), with potential connections between eastern Iceland and the western Barents Sea. These results suggest a mismatch between current stock perception and management boundaries in the Northeast Atlantic. publishedVersion Article in Journal/Newspaper Arctic Baffin Bay Baffin Bay Baffin Barents Sea Davis Strait Greenland Iceland North Atlantic North Atlantic oscillation Northeast Atlantic Northwest Atlantic Norwegian Sea Institute for Marine Research: Brage IMR Arctic Baffin Bay Barents Sea Greenland Norwegian Sea Fisheries Management and Ecology 30 5 521 535 |
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Open Polar |
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Institute for Marine Research: Brage IMR |
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ftimr |
language |
English |
description |
Accurate information on population structure is essential for effective fisheries management. Greenland halibut (Reinhardtius hippoglossoides) in the North Atlantic is managed as four separate offshore stocks. We use Multivariate Autoregressive State-Space (MARSS) models to assess population structure by means of abundance and biomass trends in four regions (Norwegian Sea, Iceland, Southeast Greenland, and Northwest Atlantic) where three offshore stocks are recognized: (1) Baffin Bay–Davis Strait (Northwest Atlantic stock), (2) Southeast Greenland and Iceland (West Nordic stock (WNS)), and (3) the Barents and Norwegian Seas (Northeast Arctic stock). We formulated model alternatives, using bottom trawl survey data from each region for 1996–2019, to evaluate support for different population structures. Abundance and biomass observations from each region were linked to growth rate parameters in MARSS models and the impact of climate (North Atlantic Oscillation Index) and fishing (commercial catches) on stock dynamics was investigated. Top models identified the Northwest Atlantic as an independent population. Best-fit models treated Greenland halibut in the WNS as two independent populations (east and west), with potential connections between eastern Iceland and the western Barents Sea. These results suggest a mismatch between current stock perception and management boundaries in the Northeast Atlantic. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Úbeda, J. Nogueira, A. Tolimieri, N. Vihtakari, Mikko Elvarsson, B. Treble, M. Boje, J. |
spellingShingle |
Úbeda, J. Nogueira, A. Tolimieri, N. Vihtakari, Mikko Elvarsson, B. Treble, M. Boje, J. Using multivariate autoregressive state-space models to examine stock structure of Greenland halibut in the North Atlantic |
author_facet |
Úbeda, J. Nogueira, A. Tolimieri, N. Vihtakari, Mikko Elvarsson, B. Treble, M. Boje, J. |
author_sort |
Úbeda, J. |
title |
Using multivariate autoregressive state-space models to examine stock structure of Greenland halibut in the North Atlantic |
title_short |
Using multivariate autoregressive state-space models to examine stock structure of Greenland halibut in the North Atlantic |
title_full |
Using multivariate autoregressive state-space models to examine stock structure of Greenland halibut in the North Atlantic |
title_fullStr |
Using multivariate autoregressive state-space models to examine stock structure of Greenland halibut in the North Atlantic |
title_full_unstemmed |
Using multivariate autoregressive state-space models to examine stock structure of Greenland halibut in the North Atlantic |
title_sort |
using multivariate autoregressive state-space models to examine stock structure of greenland halibut in the north atlantic |
publishDate |
2023 |
url |
https://hdl.handle.net/11250/3098138 https://doi.org/10.1111/fme.12639 |
geographic |
Arctic Baffin Bay Barents Sea Greenland Norwegian Sea |
geographic_facet |
Arctic Baffin Bay Barents Sea Greenland Norwegian Sea |
genre |
Arctic Baffin Bay Baffin Bay Baffin Barents Sea Davis Strait Greenland Iceland North Atlantic North Atlantic oscillation Northeast Atlantic Northwest Atlantic Norwegian Sea |
genre_facet |
Arctic Baffin Bay Baffin Bay Baffin Barents Sea Davis Strait Greenland Iceland North Atlantic North Atlantic oscillation Northeast Atlantic Northwest Atlantic Norwegian Sea |
op_source |
521-535 30 Fisheries Management and Ecology 5 |
op_relation |
Fisheries Management and Ecology. 2023, 30 (5), 521-535. urn:issn:0969-997X https://hdl.handle.net/11250/3098138 https://doi.org/10.1111/fme.12639 cristin:2161681 |
op_doi |
https://doi.org/10.1111/fme.12639 |
container_title |
Fisheries Management and Ecology |
container_volume |
30 |
container_issue |
5 |
container_start_page |
521 |
op_container_end_page |
535 |
_version_ |
1782331347479560192 |