Browsing Published in cooperation with others by Author "Aglen, Asgeir"
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1992 ICES coordinated acoustic survey of ICES divisions IVa, IVb and VIa
Simmonds, E. John; Dommasnes, Are; Aglen, Asgeir (ICES CM Documents;1993/H:11, Working paper, 1993)This papers provides a report on the combined acoustic survey of herring stocks in the North Sea and ICES Division IVa in July 1992. Surveys by Norway, Scotland and the Netherlands are included covering the period 24 ... -
An acoustic survey on 0-group gadoids in the northern North Sea and the Shetland-Orkney area, July 1984
Aglen, Asgeir; Lahn-Johannessen, John; Smedstad, Odd M. (ICES CM Documents;1985/G:17, Working paper, 1985)An acoustic survey was carried out by two research vessels in July 1984 to assess the distribution and abundance of 0-group gadoids. The 0-groups were distributed in scattering layers by night and in schools by day. ... -
Basis for stock assessment and management advice
Yaragina, Natalia A.; Aglen, Asgeir (IMR/PINRO Joint Report Series, Conference object, 2002) -
Basis for stock assessment and management advice
Yaragina, Natalia A.; Aglen, Asgeir (IMR/PINRO Joint Report Series, Conference object, 2002) -
Cod in the Barents Sea (North-East arctic cod) : a review of the biology and the history of fishery and management [presentation]
Aglen, Asgeir; Drevetnyak, Konstantin; Sokolov, Konstantin (IMR/PINRO Joint Report Series;1/2004, Conference object, 2004) -
Cod in the Barents Sea (North-East arctic cod) : a review of the biology and the history of fishery and management [presentation]
Aglen, Asgeir; Drevetnyak, Konstantin; Sokolov, Konstantin (IMR/PINRO Joint Report Series;1/2004, Conference object, 2004) -
Cod in the Barents Sea (Northeast Arctic cod): a review of the biology and history of the fishery and its management
Aglen, Asgeir; Drevetnyak, Konstantin; Sokolov, Konstantin (IMR/PINRO Joint Report Series, Conference object, 2004)This paper briefly reviews our knowledge of the spatial distribution, ecology, stocks dynamics and fishery for Northeast Arctic cod. The history of stock assessments and scientific advice, and of fisheries regulations and ... -
Cod in the Barents Sea (Northeast Arctic cod): a review of the biology and history of the fishery and its management
Aglen, Asgeir; Drevetnyak, Konstantin; Sokolov, Konstantin (IMR/PINRO Joint Report Series, Conference object, 2004)This paper briefly reviews our knowledge of the spatial distribution, ecology, stocks dynamics and fishery for Northeast Arctic cod. The history of stock assessments and scientific advice, and of fisheries regulations and ... -
Comparisons between size distribution in surveys and commercial catches: a useful tool for monitoring changes in the size selection in the fisheries?
Aglen, Asgeir (IMR/PINRO Joint Report Series, Conference object, 2001)A method is proposed for using fish distributions from standarized research surveys for estimating relative selection in the fisheries. The method is applied on data for North-east arctic cod in the 1990-ies. Survey-related ... -
Comparisons between size distribution in surveys and commercial catches: a useful tool for monitoring changes in the size selection in the fisheries?
Aglen, Asgeir (IMR/PINRO Joint Report Series, Conference object, 2001)A method is proposed for using fish distributions from standarized research surveys for estimating relative selection in the fisheries. The method is applied on data for North-east arctic cod in the 1990-ies. Survey-related ... -
Day / night variation in fish directivity in the trawl opening
Huse, Ingvar; Aglen, Asgeir; Engås, Arill; Godø, Olav Rune; West, Charles W. (ICES CM Documents;1994/B:18, Working paper, 1994)Still photographs of fish in the mouth area of a bottom trawl were taken by a downwards-oriented automated strobe camera mounted near the headrope. Fish angles relative to the towing direction were measured. Fish were ... -
Density dependent catchability in bottom trawl surveys
Aglen, Asgeir; Engås, Arill; Godø, Olav Rune; McCallum, Barry R.; Stansbury, Don; Walsh, Stephen J. (ICES CM Documents;1997/W:16, Working paper, 1997)Fish form schools, layer or patches in which the individual fish's behaviour is not independent of its neighbours movements. On the other hand, at low densities fish may have the freedom to act as single individuals ... -
Distribution and abundance of sprat in the North Sea in winter 1979-1980 determined by acoustic methods.
Aglen, Asgeir; Iversen, Svein A. (ICES CM Documents;1980/H:41, Working paper, 1980)To estimate the size of the North Sea sprat stock acoustically two cruises were carried out in November 1979-January 1980. The method is described and the size of the sprat stock was estimated to about 1 million tons. ... -
The effects of IUU fishing (unreported catches) on stock assessments, predictions and management advice
Aglen, Asgeir; Nakken, Odd (IMR/PINRO joint report series, Conference object, 2005) -
The effects of IUU fishing (unreported catches) on stock assessments, predictions and management advice
Aglen, Asgeir; Nakken, Odd (IMR/PINRO joint report series, Conference object, 2005) -
The effects of IUU fishing on stock assessments, predictions and management advice [presentation]
Aglen, Asgeir; Nakken, Odd (IMR/PINRO Joint Report Series;2/2005, Conference object, 2005) -
The effects of IUU fishing on stock assessments, predictions and management advice [presentation]
Aglen, Asgeir; Nakken, Odd (IMR/PINRO Joint Report Series;2/2005, Conference object, 2005) -
Empirical results on precision - effort relationships for acoustic surveys
Aglen, Asgeir (ICES CM Documents;1989/B:30, Working paper, 1989)Repeated echo integrator surveys using a rather dense survey grid were performed in areas where the effect of fish migration was assumed to be insignificant. Relative estimates of fish abundance representing different ... -
Fish investigations in the Barents Sea winter 2007-2012
Mehl, Sigbjørn; Aglen, Asgeir; Bogstad, Bjarte; Dingsør, Gjert Endre; Gjøsæter, Harald; Johannesen, Edda; Korsbrekke, Knut; Staby, Arved; Wenneck, Thomas de Lange; Alexandrov, Dmitry I.; Murashko, Pavel A.; Prozorkevich, Dmitry; Smirnov, Oleg (IMR/PINRO Joint Report Series;1/2013, Research report, 2013) -
Fish investigations in the Barents Sea winter 2013-2014
Mehl, Sigbjørn; Aglen, Asgeir; Bogstad, Bjarte; Dingsør, Gjert Endre; Gjøsæter, Harald; Godiksen, Jane; Johannesen, Edda; Korsbrekke, Knut; Staby, Arved; Wenneck, Thomas de Lange; Wienerroither, Rupert; Murashko, Pavel A.; Russkikh, Alexey (IMR/PINRO Joint Report Series;2/2014, Research report, 2014)