Assessment surveys for capelin in the Iceland-East Greenland-Jan Mayen area, 1978-2001
The directed fishery for capelin in the Iceland–East Greenland–Jan Mayen area began in the mid-1960s as a February–March fishery in coastal waters and yielded about 100 000–200 000 t annually. By the late 1970s it had expanded geographically and seasonally, with annual catches at about 1 000 000 t....
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fthighwire:oai:open-archive.highwire.org:icesjms:59/5/1096 2023-05-15T15:38:58+02:00 Assessment surveys for capelin in the Iceland-East Greenland-Jan Mayen area, 1978-2001 Vilhjálmsson, Hjálmar Carscadden, James E. 2002-01-01 00:00:00.0 text/html http://icesjms.oxfordjournals.org/cgi/content/short/59/5/1096 https://doi.org/10.1006/jmsc.2002.1232 en eng Oxford University Press http://icesjms.oxfordjournals.org/cgi/content/short/59/5/1096 http://dx.doi.org/10.1006/jmsc.2002.1232 Copyright (C) 2002, International Council for the Exploration of the Sea/Conseil International pour l'Exploration de la Mer Regular Articles TEXT 2002 fthighwire https://doi.org/10.1006/jmsc.2002.1232 2013-05-27T03:28:43Z The directed fishery for capelin in the Iceland–East Greenland–Jan Mayen area began in the mid-1960s as a February–March fishery in coastal waters and yielded about 100 000–200 000 t annually. By the late 1970s it had expanded geographically and seasonally, with annual catches at about 1 000 000 t. The fishery continued at about that level and aimed at the mature or maturing part of the stock. Preliminary catch quotas were based on acoustic estimates of juvenile capelin and final Total Allowable Catches were determined using estimates of maturing adults, measured during the fishery. Both juveniles and adults can theoretically be estimated from the same autumn acoustic survey. However, in many years, the abundance of the maturing fishable stock could be assessed only after the survey was repeated, because either scientists or the fishing industry determined that the first estimates were not realistic. The distribution of capelin during autumn in this area is unpredictable owing to annual variations in environmental conditions. In contrast, in the Barents Sea and off Newfoundland, the approach has been to employ single annual acoustic surveys. The advantages, disadvantages, and historical record of Iceland's repeat-survey approach are discussed. Text Barents Sea East Greenland Greenland Iceland Jan Mayen Newfoundland HighWire Press (Stanford University) Barents Sea Greenland Jan Mayen ICES Journal of Marine Science 59 5 1096 1104 |
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Open Polar |
collection |
HighWire Press (Stanford University) |
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fthighwire |
language |
English |
topic |
Regular Articles |
spellingShingle |
Regular Articles Vilhjálmsson, Hjálmar Carscadden, James E. Assessment surveys for capelin in the Iceland-East Greenland-Jan Mayen area, 1978-2001 |
topic_facet |
Regular Articles |
description |
The directed fishery for capelin in the Iceland–East Greenland–Jan Mayen area began in the mid-1960s as a February–March fishery in coastal waters and yielded about 100 000–200 000 t annually. By the late 1970s it had expanded geographically and seasonally, with annual catches at about 1 000 000 t. The fishery continued at about that level and aimed at the mature or maturing part of the stock. Preliminary catch quotas were based on acoustic estimates of juvenile capelin and final Total Allowable Catches were determined using estimates of maturing adults, measured during the fishery. Both juveniles and adults can theoretically be estimated from the same autumn acoustic survey. However, in many years, the abundance of the maturing fishable stock could be assessed only after the survey was repeated, because either scientists or the fishing industry determined that the first estimates were not realistic. The distribution of capelin during autumn in this area is unpredictable owing to annual variations in environmental conditions. In contrast, in the Barents Sea and off Newfoundland, the approach has been to employ single annual acoustic surveys. The advantages, disadvantages, and historical record of Iceland's repeat-survey approach are discussed. |
format |
Text |
author |
Vilhjálmsson, Hjálmar Carscadden, James E. |
author_facet |
Vilhjálmsson, Hjálmar Carscadden, James E. |
author_sort |
Vilhjálmsson, Hjálmar |
title |
Assessment surveys for capelin in the Iceland-East Greenland-Jan Mayen area, 1978-2001 |
title_short |
Assessment surveys for capelin in the Iceland-East Greenland-Jan Mayen area, 1978-2001 |
title_full |
Assessment surveys for capelin in the Iceland-East Greenland-Jan Mayen area, 1978-2001 |
title_fullStr |
Assessment surveys for capelin in the Iceland-East Greenland-Jan Mayen area, 1978-2001 |
title_full_unstemmed |
Assessment surveys for capelin in the Iceland-East Greenland-Jan Mayen area, 1978-2001 |
title_sort |
assessment surveys for capelin in the iceland-east greenland-jan mayen area, 1978-2001 |
publisher |
Oxford University Press |
publishDate |
2002 |
url |
http://icesjms.oxfordjournals.org/cgi/content/short/59/5/1096 https://doi.org/10.1006/jmsc.2002.1232 |
geographic |
Barents Sea Greenland Jan Mayen |
geographic_facet |
Barents Sea Greenland Jan Mayen |
genre |
Barents Sea East Greenland Greenland Iceland Jan Mayen Newfoundland |
genre_facet |
Barents Sea East Greenland Greenland Iceland Jan Mayen Newfoundland |
op_relation |
http://icesjms.oxfordjournals.org/cgi/content/short/59/5/1096 http://dx.doi.org/10.1006/jmsc.2002.1232 |
op_rights |
Copyright (C) 2002, International Council for the Exploration of the Sea/Conseil International pour l'Exploration de la Mer |
op_doi |
https://doi.org/10.1006/jmsc.2002.1232 |
container_title |
ICES Journal of Marine Science |
container_volume |
59 |
container_issue |
5 |
container_start_page |
1096 |
op_container_end_page |
1104 |
_version_ |
1766370403146530816 |