Sampling herring in the Norwegian Sea by pelagic trawl
When the stock of Norwegian spring-spawning herring is distributed in the Norwegian Sea in summertime, pelagic trawl sampling may be rather challenging because of substantial variation in vertical distribution (from surface and down to 400 m depth), and avoidance of vessel and trawl gear. In this pa...
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ftimr:oai:imr.brage.unit.no:11250/105777 2023-05-15T17:46:57+02:00 Sampling herring in the Norwegian Sea by pelagic trawl Misund, Ole Arve 1997 application/pdf http://hdl.handle.net/11250/105777 eng eng ICES ICES CM Documents;1997/W:21 This report is not to be cited without prior reference to the author http://hdl.handle.net/11250/105777 10 s. herring sild sampling prøvetaking pelagic trawl pelagisk trål stock assessment bestandsberegning VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Catch: 925 VDP::Mathematics and natural science: 400::Geosciences: 450::Oceanography: 452 VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Fish health: 923 Working paper 1997 ftimr 2021-09-23T20:14:53Z When the stock of Norwegian spring-spawning herring is distributed in the Norwegian Sea in summertime, pelagic trawl sampling may be rather challenging because of substantial variation in vertical distribution (from surface and down to 400 m depth), and avoidance of vessel and trawl gear. In this paper the operation and performance of the «Åkratrål» during pelagic trawl sampling of herring by R/V «G.O. Sars» on cruises in the Norwegian Sea 1996 - 1997 are described. The sampling results with regard to capture success, catch size and geograpically segregated length distributions are presented. The implications of the sampling results on the reliability of the acoustic estimate of stock size are discussed. Report Norwegian Sea Institute for Marine Research: Brage IMR Norwegian Sea |
institution |
Open Polar |
collection |
Institute for Marine Research: Brage IMR |
op_collection_id |
ftimr |
language |
English |
topic |
herring sild sampling prøvetaking pelagic trawl pelagisk trål stock assessment bestandsberegning VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Catch: 925 VDP::Mathematics and natural science: 400::Geosciences: 450::Oceanography: 452 VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Fish health: 923 |
spellingShingle |
herring sild sampling prøvetaking pelagic trawl pelagisk trål stock assessment bestandsberegning VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Catch: 925 VDP::Mathematics and natural science: 400::Geosciences: 450::Oceanography: 452 VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Fish health: 923 Misund, Ole Arve Sampling herring in the Norwegian Sea by pelagic trawl |
topic_facet |
herring sild sampling prøvetaking pelagic trawl pelagisk trål stock assessment bestandsberegning VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Catch: 925 VDP::Mathematics and natural science: 400::Geosciences: 450::Oceanography: 452 VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Fish health: 923 |
description |
When the stock of Norwegian spring-spawning herring is distributed in the Norwegian Sea in summertime, pelagic trawl sampling may be rather challenging because of substantial variation in vertical distribution (from surface and down to 400 m depth), and avoidance of vessel and trawl gear. In this paper the operation and performance of the «Åkratrål» during pelagic trawl sampling of herring by R/V «G.O. Sars» on cruises in the Norwegian Sea 1996 - 1997 are described. The sampling results with regard to capture success, catch size and geograpically segregated length distributions are presented. The implications of the sampling results on the reliability of the acoustic estimate of stock size are discussed. |
format |
Report |
author |
Misund, Ole Arve |
author_facet |
Misund, Ole Arve |
author_sort |
Misund, Ole Arve |
title |
Sampling herring in the Norwegian Sea by pelagic trawl |
title_short |
Sampling herring in the Norwegian Sea by pelagic trawl |
title_full |
Sampling herring in the Norwegian Sea by pelagic trawl |
title_fullStr |
Sampling herring in the Norwegian Sea by pelagic trawl |
title_full_unstemmed |
Sampling herring in the Norwegian Sea by pelagic trawl |
title_sort |
sampling herring in the norwegian sea by pelagic trawl |
publisher |
ICES |
publishDate |
1997 |
url |
http://hdl.handle.net/11250/105777 |
geographic |
Norwegian Sea |
geographic_facet |
Norwegian Sea |
genre |
Norwegian Sea |
genre_facet |
Norwegian Sea |
op_source |
10 s. |
op_relation |
ICES CM Documents;1997/W:21 This report is not to be cited without prior reference to the author http://hdl.handle.net/11250/105777 |
_version_ |
1766150921493938176 |