The management of cod stocks with special reference to growth and recruitment overfishing and the question whether artificial propagation can help solve management problems. In: The propagation of cod Gadus morhua L.: an international symposium, Arendal, 14 - 17 June 1983
The terms qrowth overfishinq and recruitment overfishinq are defined. The exploitation and management of two of the major cod stocks in the North-East Atlantic, North-East Arctic cod and North Sea cod, are briefly reviewed with special reference to the two forms of overfishinq. Possible density-depe...
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1984
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ftimr:oai:imr.brage.unit.no:11250/115186 2023-05-15T14:30:26+02:00 The management of cod stocks with special reference to growth and recruitment overfishing and the question whether artificial propagation can help solve management problems. In: The propagation of cod Gadus morhua L.: an international symposium, Arendal, 14 - 17 June 1983 Ulltang, Øyvind 1984 521921 bytes application/pdf http://hdl.handle.net/11250/115186 eng eng Havforskningsinstituttet Flødevigen rapportserie 1, 1984 urn:issn:0333-2594 http://hdl.handle.net/11250/115186 795-818 Conference object 1984 ftimr 2021-09-23T20:14:53Z The terms qrowth overfishinq and recruitment overfishinq are defined. The exploitation and management of two of the major cod stocks in the North-East Atlantic, North-East Arctic cod and North Sea cod, are briefly reviewed with special reference to the two forms of overfishinq. Possible density-dependent factors limitinq stock size and yield are discussed, and it is suqqested that density-dependent qrowth and especially cannibalism of younq by adults miqht be important requlatory mechanisms in cod stocks. Potential effects on yield of artificial propaqation are then considered, makinq different assumptions about the form of the yield curve of the natural population. It is concluded that veral factors should be further studied before starting large scale releases of artificially produced recruits on a regular basis. Conference Object Arctic cod Arctic Gadus morhua North East Atlantic Institute for Marine Research: Brage IMR Arctic |
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Open Polar |
collection |
Institute for Marine Research: Brage IMR |
op_collection_id |
ftimr |
language |
English |
description |
The terms qrowth overfishinq and recruitment overfishinq are defined. The exploitation and management of two of the major cod stocks in the North-East Atlantic, North-East Arctic cod and North Sea cod, are briefly reviewed with special reference to the two forms of overfishinq. Possible density-dependent factors limitinq stock size and yield are discussed, and it is suqqested that density-dependent qrowth and especially cannibalism of younq by adults miqht be important requlatory mechanisms in cod stocks. Potential effects on yield of artificial propaqation are then considered, makinq different assumptions about the form of the yield curve of the natural population. It is concluded that veral factors should be further studied before starting large scale releases of artificially produced recruits on a regular basis. |
format |
Conference Object |
author |
Ulltang, Øyvind |
spellingShingle |
Ulltang, Øyvind The management of cod stocks with special reference to growth and recruitment overfishing and the question whether artificial propagation can help solve management problems. In: The propagation of cod Gadus morhua L.: an international symposium, Arendal, 14 - 17 June 1983 |
author_facet |
Ulltang, Øyvind |
author_sort |
Ulltang, Øyvind |
title |
The management of cod stocks with special reference to growth and recruitment overfishing and the question whether artificial propagation can help solve management problems. In: The propagation of cod Gadus morhua L.: an international symposium, Arendal, 14 - 17 June 1983 |
title_short |
The management of cod stocks with special reference to growth and recruitment overfishing and the question whether artificial propagation can help solve management problems. In: The propagation of cod Gadus morhua L.: an international symposium, Arendal, 14 - 17 June 1983 |
title_full |
The management of cod stocks with special reference to growth and recruitment overfishing and the question whether artificial propagation can help solve management problems. In: The propagation of cod Gadus morhua L.: an international symposium, Arendal, 14 - 17 June 1983 |
title_fullStr |
The management of cod stocks with special reference to growth and recruitment overfishing and the question whether artificial propagation can help solve management problems. In: The propagation of cod Gadus morhua L.: an international symposium, Arendal, 14 - 17 June 1983 |
title_full_unstemmed |
The management of cod stocks with special reference to growth and recruitment overfishing and the question whether artificial propagation can help solve management problems. In: The propagation of cod Gadus morhua L.: an international symposium, Arendal, 14 - 17 June 1983 |
title_sort |
management of cod stocks with special reference to growth and recruitment overfishing and the question whether artificial propagation can help solve management problems. in: the propagation of cod gadus morhua l.: an international symposium, arendal, 14 - 17 june 1983 |
publisher |
Havforskningsinstituttet |
publishDate |
1984 |
url |
http://hdl.handle.net/11250/115186 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic cod Arctic Gadus morhua North East Atlantic |
genre_facet |
Arctic cod Arctic Gadus morhua North East Atlantic |
op_source |
795-818 |
op_relation |
Flødevigen rapportserie 1, 1984 urn:issn:0333-2594 http://hdl.handle.net/11250/115186 |
_version_ |
1766304279224647680 |