Surveying the younger age grows of saithe - experiences from a small scale acoustic survey at the coast of western Finnmark
Precision and relevance of pre-recruit studies for fishery management related to fish stocks in the Barents Sea and adjacent waters. Proceeding of the sixth IMR-PINRO Symposium Bergen, 14-17 June 1994. The small saithe (1- and 2- group) is mainly distributed in fairly shallow areas close to the Norw...
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ftimr:oai:imr.brage.unit.no:11250/107471 2023-05-15T15:39:00+02:00 Surveying the younger age grows of saithe - experiences from a small scale acoustic survey at the coast of western Finnmark Aglen, Asgeir 1995 429042 bytes application/pdf http://hdl.handle.net/11250/107471 eng eng PINRO-IMR Symposium 6 http://hdl.handle.net/11250/107471 s. 179-186 VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Resource biology: 921 Conference object 1995 ftimr 2021-09-23T20:15:38Z Precision and relevance of pre-recruit studies for fishery management related to fish stocks in the Barents Sea and adjacent waters. Proceeding of the sixth IMR-PINRO Symposium Bergen, 14-17 June 1994. The small saithe (1- and 2- group) is mainly distributed in fairly shallow areas close to the Norwegian coast from Rogaland to eastern Finnmark. It is known to occur quite regularily at certain localities. It is usually schooling, at least in daylight. Thus, by using a small vessel equipped with an echo sounder it is usually easy to detect. This paper discuss the possibilities of acoustic surveying a fixed number of known "saithe localities" to obtain a yearclass index. Hypothesis regarding the distribution pattern and fish behaviour are presented, and the cosequences for the reliability of a survey index are discussed. Absolute estimates seem unrealistic, because a large proportion of the most important areas can not be surveyed even with a small vessel. Results from a survey in western Finnmark during early August 1993 are presented and discussed. The results indicate that in these areas the 1- group tended to stay rather close to the shore, while the 2- group showed a more favourable distribution. At the lower limit of its vertical distribution range it showed some overlap with the 3- group. Conference Object Barents Sea Finnmark Finnmark Institute for Marine Research: Brage IMR Barents Sea Bergen |
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Open Polar |
collection |
Institute for Marine Research: Brage IMR |
op_collection_id |
ftimr |
language |
English |
topic |
VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Resource biology: 921 |
spellingShingle |
VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Resource biology: 921 Aglen, Asgeir Surveying the younger age grows of saithe - experiences from a small scale acoustic survey at the coast of western Finnmark |
topic_facet |
VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Resource biology: 921 |
description |
Precision and relevance of pre-recruit studies for fishery management related to fish stocks in the Barents Sea and adjacent waters. Proceeding of the sixth IMR-PINRO Symposium Bergen, 14-17 June 1994. The small saithe (1- and 2- group) is mainly distributed in fairly shallow areas close to the Norwegian coast from Rogaland to eastern Finnmark. It is known to occur quite regularily at certain localities. It is usually schooling, at least in daylight. Thus, by using a small vessel equipped with an echo sounder it is usually easy to detect. This paper discuss the possibilities of acoustic surveying a fixed number of known "saithe localities" to obtain a yearclass index. Hypothesis regarding the distribution pattern and fish behaviour are presented, and the cosequences for the reliability of a survey index are discussed. Absolute estimates seem unrealistic, because a large proportion of the most important areas can not be surveyed even with a small vessel. Results from a survey in western Finnmark during early August 1993 are presented and discussed. The results indicate that in these areas the 1- group tended to stay rather close to the shore, while the 2- group showed a more favourable distribution. At the lower limit of its vertical distribution range it showed some overlap with the 3- group. |
format |
Conference Object |
author |
Aglen, Asgeir |
author_facet |
Aglen, Asgeir |
author_sort |
Aglen, Asgeir |
title |
Surveying the younger age grows of saithe - experiences from a small scale acoustic survey at the coast of western Finnmark |
title_short |
Surveying the younger age grows of saithe - experiences from a small scale acoustic survey at the coast of western Finnmark |
title_full |
Surveying the younger age grows of saithe - experiences from a small scale acoustic survey at the coast of western Finnmark |
title_fullStr |
Surveying the younger age grows of saithe - experiences from a small scale acoustic survey at the coast of western Finnmark |
title_full_unstemmed |
Surveying the younger age grows of saithe - experiences from a small scale acoustic survey at the coast of western Finnmark |
title_sort |
surveying the younger age grows of saithe - experiences from a small scale acoustic survey at the coast of western finnmark |
publishDate |
1995 |
url |
http://hdl.handle.net/11250/107471 |
geographic |
Barents Sea Bergen |
geographic_facet |
Barents Sea Bergen |
genre |
Barents Sea Finnmark Finnmark |
genre_facet |
Barents Sea Finnmark Finnmark |
op_source |
s. 179-186 |
op_relation |
PINRO-IMR Symposium 6 http://hdl.handle.net/11250/107471 |
_version_ |
1766370464107593728 |