Blar i Barents Sea NOR-RUS demersal fish cruise in winter på forfatter "Hylen, Arvid"
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Estimates of stock size of Northeast Arctic cod and haddock from survey data 1986/1987
Godø, Olav Rune; Hylen, Arvid; Jacobsen, Jan Arge; Jakobsen, Tore; Mehl, Sigbjørn; Nedreaas, Kjell Harald; Sunnanå, Knut (ICES CM documents, Working paper, 1987)Combined acoustic and bottom trawl survey for cod and haddock were carried out in the Svalbard area in autumn 1986 and in the Barents Sea during the winter 1987. An acoustic survey for spwaning cod was carried out in March ... -
Estimates of stock size of northeast Arctic cod and haddock, "Sebastes mentella" and "Sebastes marinus" from survey data, winter 1988
Hylen, Arvid; Jacobsen, Jan Arge; Jakobsen, Tore; Mehl, Sigbjørn; Nedreaas, Kjell Harald; Sunnanå, Knut (ICES CM Documents;1988/G:43, Working paper, 1988)An acoustic survey and a bottom trawl survey for cod and haddock were carried out in the Barents Sea during the winter 1988. The fish still had the westerly distribution established in the previous year, but the echo ... -
Investigations on demersal fish in the Barents Sea in winter 1977
Dalen, John; Hylen, Arvid; Smedstad, Odd M. (ICES CM Documents;1977/F:23, Working paper, 1977) -
Norwegian investigations on young cod and haddock in the Barents Sea during the winter 1982
Dalen, John; Hylen, Arvid; Nakken, Odd; Randa, Kjell; Smedstad, Odd M. (ICES CM documents, Working paper, 1982)An acoustic survey and a bottom trawl survey were carried out in the Barents Sea during winter 1982. Both surveys showed that there has been a reduction in the total number of cod of about 50% and about 75% for haddock in ... -
Preliminary report of the Norwegian investigations on young cod and haddock in the Barents Sea
Nakken, Odd; Hylen, Arvid; Jakobsen, Tore; Nedreaas, Kjell Harald (ICES CM documents, Working paper, 1986)An acoustic survey and a bottom trawl survey for cod and haddock were carried out in the Barents Sea during the winter 1986. As a result of strong improvement in the recruitment for both species, most of the echo abundance ... -
Preliminary report of the Norwegian investigations on young cod and haddock in the Barents Sea during the winter 1982
Nakken, Odd; Dalen, John; Hylen, Arvid; Randa, Kjell; Smedstad, Odd M. (ICES CM documents, Working paper, 1983)An acoustic survey and a bottow trawl survey for cod and haddock were carried out in the Barents Sea during the winter 1983. The two surveys gave different results. The acoustic survey showed a 50 % reduction from 1982 for ... -
Preliminary report of the Norwegian investigations on young cod and haddock in the Barents Sea during the winter 1985
Nakken, Odd; Hylen, Arvid; Sunnanå, Knut; Jakobsen, Tore (ICES CM documents, Working paper, 1985)An acoustic survey and a bottom trawl survey for cod and haddock were carried out in the Barents Sea during the winter 1985. The acoustic data and the biological data from trawl stations were combined in two different ways, ... -
Preliminary reports of the Norwegian investigations on young cod and haddock in the Barents Sea during the winter 1984
Nakken, Odd; Dalen, John; Hylen, Arvid; Randa, Kjell; Jakobsen, Tore (ICES CM documents, Working paper, 1984)An acoustic survey and a bottom trawl survey for cod and haddock were carried out in the Barents Sea during the winter 1984. The two surveys gave different results, both in absolute terms and when changes from the 1983 ... -
Toktrapport [20/1 - 6/3, 20/1 - 27/2, 1981]
Dalen, John; Hylen, Arvid; Smedstad, Odd M. ([Toktrapport/Havforskningsinstituttet];, Working paper, 1981) -
Undersøkelser av torsk, hyse og uer i Barentshavet vinteren 1991
Hylen, Arvid; Jakobsen, Tore; Mehl, Sigbjørn; Nedreaas, Kjell Harald ([Toktrapport/Havforskningsinstituttet];, Working paper, 1991)