Assessment methodology for Barents Sea capelin, Mallotus villosus (Muller)
The methods used to assess the Barents Sea capelin, Mallotus villosus (Müller), stock have always differed considerably from those used for most other stocks. Owing to the life history characteristics of capelin (short lifespan, considerable natural mortality, including spawning mortality), sequenti...
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fthighwire:oai:open-archive.highwire.org:icesjms:59/5/1086 2023-05-15T15:38:30+02:00 Assessment methodology for Barents Sea capelin, Mallotus villosus (Muller) Gjøsæter, Harald Bogstad, Bjarte Tjelmeland, Sigurd 2002-01-01 00:00:00.0 text/html http://icesjms.oxfordjournals.org/cgi/content/short/59/5/1086 https://doi.org/10.1006/jmsc.2002.1238 en eng Oxford University Press http://icesjms.oxfordjournals.org/cgi/content/short/59/5/1086 http://dx.doi.org/10.1006/jmsc.2002.1238 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.2002.1238 2013-05-27T03:28:43Z The methods used to assess the Barents Sea capelin, Mallotus villosus (Müller), stock have always differed considerably from those used for most other stocks. Owing to the life history characteristics of capelin (short lifespan, considerable natural mortality, including spawning mortality), sequential population analysis (VPA, etc) cannot be applied to assess stock status and to generate catch prognoses. The assessment is based on an annual acoustic survey, which is regarded as an absolute measurement of stock size. The assessment methods have changed considerably since these activities started in the early 1970s. They have evolved from a relatively simple single-species model, used prior to the first major stock collapse in the early 1980s, through several steps towards the rather ambitious probabilistic model used at present, in which multispecies interactions and uncertainty in measured and modelled quantities are included. In this paper we review the history of stock assessment of Barents Sea capelin, describe current practice, and briefly outline the extensions to the model that will soon be implemented. Current management practice is evaluated in light of the history of the stock and the fishery, and is compared with that used with other capelin stocks. Text Barents Sea HighWire Press (Stanford University) Barents Sea ICES Journal of Marine Science 59 5 1086 1095 |
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English |
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Regular Articles |
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Regular Articles Gjøsæter, Harald Bogstad, Bjarte Tjelmeland, Sigurd Assessment methodology for Barents Sea capelin, Mallotus villosus (Muller) |
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Regular Articles |
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The methods used to assess the Barents Sea capelin, Mallotus villosus (Müller), stock have always differed considerably from those used for most other stocks. Owing to the life history characteristics of capelin (short lifespan, considerable natural mortality, including spawning mortality), sequential population analysis (VPA, etc) cannot be applied to assess stock status and to generate catch prognoses. The assessment is based on an annual acoustic survey, which is regarded as an absolute measurement of stock size. The assessment methods have changed considerably since these activities started in the early 1970s. They have evolved from a relatively simple single-species model, used prior to the first major stock collapse in the early 1980s, through several steps towards the rather ambitious probabilistic model used at present, in which multispecies interactions and uncertainty in measured and modelled quantities are included. In this paper we review the history of stock assessment of Barents Sea capelin, describe current practice, and briefly outline the extensions to the model that will soon be implemented. Current management practice is evaluated in light of the history of the stock and the fishery, and is compared with that used with other capelin stocks. |
format |
Text |
author |
Gjøsæter, Harald Bogstad, Bjarte Tjelmeland, Sigurd |
author_facet |
Gjøsæter, Harald Bogstad, Bjarte Tjelmeland, Sigurd |
author_sort |
Gjøsæter, Harald |
title |
Assessment methodology for Barents Sea capelin, Mallotus villosus (Muller) |
title_short |
Assessment methodology for Barents Sea capelin, Mallotus villosus (Muller) |
title_full |
Assessment methodology for Barents Sea capelin, Mallotus villosus (Muller) |
title_fullStr |
Assessment methodology for Barents Sea capelin, Mallotus villosus (Muller) |
title_full_unstemmed |
Assessment methodology for Barents Sea capelin, Mallotus villosus (Muller) |
title_sort |
assessment methodology for barents sea capelin, mallotus villosus (muller) |
publisher |
Oxford University Press |
publishDate |
2002 |
url |
http://icesjms.oxfordjournals.org/cgi/content/short/59/5/1086 https://doi.org/10.1006/jmsc.2002.1238 |
geographic |
Barents Sea |
geographic_facet |
Barents Sea |
genre |
Barents Sea |
genre_facet |
Barents Sea |
op_relation |
http://icesjms.oxfordjournals.org/cgi/content/short/59/5/1086 http://dx.doi.org/10.1006/jmsc.2002.1238 |
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.2002.1238 |
container_title |
ICES Journal of Marine Science |
container_volume |
59 |
container_issue |
5 |
container_start_page |
1086 |
op_container_end_page |
1095 |
_version_ |
1766369466454638592 |