A major nursery area around the Svalbard archipelago provides recruits for the stocks in both Greenland halibut management areas in the Northeast Atlantic
Abstract Greenland halibut in the Northeast Atlantic currently have two separate management units: the Northeast Arctic (NEA) stock and the West Nordic (WN) stock. The biological basis for this separation is weak, and while the NEA stock has a well-described nursery area in the waters around the Sva...
Published in: | ICES Journal of Marine Science |
---|---|
Main Authors: | , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Oxford University Press (OUP)
2014
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1093/icesjms/fsu191 http://academic.oup.com/icesjms/article-pdf/72/3/872/31224406/fsu191.pdf |
id |
croxfordunivpr:10.1093/icesjms/fsu191 |
---|---|
record_format |
openpolar |
spelling |
croxfordunivpr:10.1093/icesjms/fsu191 2024-04-07T07:50:39+00:00 A major nursery area around the Svalbard archipelago provides recruits for the stocks in both Greenland halibut management areas in the Northeast Atlantic Albert, Ole Thomas Vollen, Tone 2014 http://dx.doi.org/10.1093/icesjms/fsu191 http://academic.oup.com/icesjms/article-pdf/72/3/872/31224406/fsu191.pdf en eng Oxford University Press (OUP) ICES Journal of Marine Science volume 72, issue 3, page 872-879 ISSN 1095-9289 1054-3139 Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Oceanography journal-article 2014 croxfordunivpr https://doi.org/10.1093/icesjms/fsu191 2024-03-08T02:58:10Z Abstract Greenland halibut in the Northeast Atlantic currently have two separate management units: the Northeast Arctic (NEA) stock and the West Nordic (WN) stock. The biological basis for this separation is weak, and while the NEA stock has a well-described nursery area in the waters around the Svalbard archipelago, no such major nursery area is known for the WN stock. To examine the linkages between these two stocks, a tagging experiment was conducted in the Svalbard nursery area, which is the only known large nursery area for Greenland halibut in the Northeast Atlantic. A total of 25 149 juvenile Greenland halibut were tagged and released in the period 2005–2008, and as of January 2014, there were 155 recaptures: 92% were caught more than 170 km from the tagging site, while 59% had travelled more than 1500 km. During the first 2 years after tagging, recaptures were reported only from the fishing grounds in the NEA management area. Subsequently, the number of recaptures decreased in the NEA management area, while recaptures were beginning to be reported from the WN management area, which by 2014 accounted for 61% of the total number of reported recaptures. It was concluded that the stocks in the two management areas for Greenland halibut in the Northeast Atlantic have a common nursery ground, and that a recruitment index based on data from the nursery around Svalbard would reflect possible recruitment to the stocks of both management units. The lack of recaptures on the Southeast Greenland shelf suggests a stock boundary west of Iceland. It is suggested to further explore the stock delineation in these areas and that future stock assessments should explore the potential advantage of using a combined assessment model for the two current management units. Article in Journal/Newspaper Arctic Greenland Iceland Northeast Atlantic Svalbard Oxford University Press Arctic Svalbard Svalbard Archipelago Greenland ICES Journal of Marine Science 72 3 872 879 |
institution |
Open Polar |
collection |
Oxford University Press |
op_collection_id |
croxfordunivpr |
language |
English |
topic |
Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Oceanography |
spellingShingle |
Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Oceanography Albert, Ole Thomas Vollen, Tone A major nursery area around the Svalbard archipelago provides recruits for the stocks in both Greenland halibut management areas in the Northeast Atlantic |
topic_facet |
Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Oceanography |
description |
Abstract Greenland halibut in the Northeast Atlantic currently have two separate management units: the Northeast Arctic (NEA) stock and the West Nordic (WN) stock. The biological basis for this separation is weak, and while the NEA stock has a well-described nursery area in the waters around the Svalbard archipelago, no such major nursery area is known for the WN stock. To examine the linkages between these two stocks, a tagging experiment was conducted in the Svalbard nursery area, which is the only known large nursery area for Greenland halibut in the Northeast Atlantic. A total of 25 149 juvenile Greenland halibut were tagged and released in the period 2005–2008, and as of January 2014, there were 155 recaptures: 92% were caught more than 170 km from the tagging site, while 59% had travelled more than 1500 km. During the first 2 years after tagging, recaptures were reported only from the fishing grounds in the NEA management area. Subsequently, the number of recaptures decreased in the NEA management area, while recaptures were beginning to be reported from the WN management area, which by 2014 accounted for 61% of the total number of reported recaptures. It was concluded that the stocks in the two management areas for Greenland halibut in the Northeast Atlantic have a common nursery ground, and that a recruitment index based on data from the nursery around Svalbard would reflect possible recruitment to the stocks of both management units. The lack of recaptures on the Southeast Greenland shelf suggests a stock boundary west of Iceland. It is suggested to further explore the stock delineation in these areas and that future stock assessments should explore the potential advantage of using a combined assessment model for the two current management units. |
format |
Article in Journal/Newspaper |
author |
Albert, Ole Thomas Vollen, Tone |
author_facet |
Albert, Ole Thomas Vollen, Tone |
author_sort |
Albert, Ole Thomas |
title |
A major nursery area around the Svalbard archipelago provides recruits for the stocks in both Greenland halibut management areas in the Northeast Atlantic |
title_short |
A major nursery area around the Svalbard archipelago provides recruits for the stocks in both Greenland halibut management areas in the Northeast Atlantic |
title_full |
A major nursery area around the Svalbard archipelago provides recruits for the stocks in both Greenland halibut management areas in the Northeast Atlantic |
title_fullStr |
A major nursery area around the Svalbard archipelago provides recruits for the stocks in both Greenland halibut management areas in the Northeast Atlantic |
title_full_unstemmed |
A major nursery area around the Svalbard archipelago provides recruits for the stocks in both Greenland halibut management areas in the Northeast Atlantic |
title_sort |
major nursery area around the svalbard archipelago provides recruits for the stocks in both greenland halibut management areas in the northeast atlantic |
publisher |
Oxford University Press (OUP) |
publishDate |
2014 |
url |
http://dx.doi.org/10.1093/icesjms/fsu191 http://academic.oup.com/icesjms/article-pdf/72/3/872/31224406/fsu191.pdf |
geographic |
Arctic Svalbard Svalbard Archipelago Greenland |
geographic_facet |
Arctic Svalbard Svalbard Archipelago Greenland |
genre |
Arctic Greenland Iceland Northeast Atlantic Svalbard |
genre_facet |
Arctic Greenland Iceland Northeast Atlantic Svalbard |
op_source |
ICES Journal of Marine Science volume 72, issue 3, page 872-879 ISSN 1095-9289 1054-3139 |
op_doi |
https://doi.org/10.1093/icesjms/fsu191 |
container_title |
ICES Journal of Marine Science |
container_volume |
72 |
container_issue |
3 |
container_start_page |
872 |
op_container_end_page |
879 |
_version_ |
1795665380534910976 |