Blar i ICES CM documents authored by IMR scientists (1949-2011) på forfatter "Nedreaas, Kjell Harald"
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A model simulating the effect of sampling strategy on stock assessment of gadoids in sub-areas I and II
Jakobsen, Tore; Nedreaas, Kjell Harald (ICES CM Documents;1986/G:69, Working paper, 1986)In the northeast Atlantic, management advice for fisheries is usually based on Virtual Population Analysis, yield per recruit, and predictions of catch and biomass. For these calculations, age distributions and weigth-at-age ... -
Abundance and distribution of postlarvae in the 0-group saithe survey in the north-east Arctic in 1985
Nedreaas, Kjell Harald (ICES CM Documents;1986/G:87, Working paper, 1986)From 11 May to 31 May 1985 a pelagic trawl survey was carried out outside the Norwegian coast north of 62° N. The purpose of this pilot survey was to examine the possibility of getting useful information about the year ... -
Acoustic abundance of spawning Northeast Arctic cod in the Lofoten survey spring 2003: Preliminary results
Mehl, Sigbjørn; Nedreaas, Kjell Harald; Salthaug, Are (Working paper, 2003) -
Age readings of Sebastes marinus otoliths: bias and precision between readers and otolith preparation methods
Stransky, Christoph; Guðmundsdóttir, Sif; Sigurdsson, Thorsteinn; Lemvig, Svend; Nedreaas, Kjell Harald (ICES CM documents, Working paper, 2001)This study presents a comparative age reading on Sebastes marinus from the Icelandic shelf within an otolith exchange program between institutes in Germany, Iceland and Norway. Out of a series of 212 otolith pairs, ... -
Biological and economic implications of a multi-gear fishery for greenland halibut (Reinhardtius hippoglossoides)
Nedreaas, Kjell Harald; Sandberg, Per; Veim, Anne Kjos (ICES CM Documents;1995/S:5, Working paper, 1995)This paper focuses on the level and distribution of fishing mortality in a multigear fishery, and its effect on biological and economic parameters. The Greenland halibut stock in ICES Sub-areas I and Il is at a historically ... -
Discrimination of the redfish (Sebastes mentella) stock components in the Irminger Sea and adjacent waters based on meristics, morphometry and biological characteristics
Trella, K.; Nedreaas, Kjell Harald; Janusz, J.; Podolska, M. (ICES CM documents;2011/A:28, Working paper, 2011) -
Early development of Northeast Arctic greenland halibut (Reinhardtius hippoglossoides)
Stene, Anne; Gundersen, Agnes C.; Albert, Ole Thomas; Solemdal, Per; Nedreaas, Kjell Harald (ICES CM Documents;1998/O:27, Working paper, 1998)The early development of the Greenland halibut (Reinhardtius hippoglossoides) has never been described in detail. This study contains some preliminary notes on the egg development of the Northeast Arctic Greenland halibut ... -
Electrophoretic studies of redfish (Genus sebastes) from Icelandic and Greenland waters
Nedreaas, Kjell Harald; Nævdal, Gunnar; Johansen, Torild (ICES CM Documents;1992/G:36, Working paper, 1992)Sebastes spp. from Icelandic and Greenland waters were analysed for biochemical genetic variation by agar gel and starch gel electrophoresis. The main emphasize was put on S. marinus, but the oceanic type S. mentella ... -
Estimates of stock size of cod, haddock, redfish and Greenland halibut in the Barents Sea and the Svalbard area autumn 1988
Hylen, Arvid; Loeng, Harald; Mehl, Sigbjørn; Nedreaas, Kjell Harald (ICES CM documents, Working paper, 1989)Combined acoustic and bottom trawl survey for cod, haddock and redfish were carried out in autumn 1988 in the Svalbard area together with an acoustic survey in the Barents Sea. The abundance indicies of cod decreased from ... -
Estimates of stock size of cod, haddock, redfish and greenland halibut in the Barents Sea and the Svalbard area, autumn 1987
Hylen, Arvid; Jacobsen, Jan Arge; Mehl, Sigbjørn; Nedreaas, Kjell Harald (ICES CM Documents;1988/G:44, Working paper, 1988)Combined acoustic and bottom trawl survey for cod and haddock were carried out in the Svalbard area together with an acoustic survey in the Barents Sea in autumn 1987. The abundance index in numbers of cod continued ... -
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 ... -
Estimates of stock size of northeast arctic cod and haddock, Sebastes mentella and Sebastes marinus from survey data, winter 1989
Jakobsen, Tore; Mehl, Sigbjørn; Nakken, Odd; Nedreaas, Kjell Harald; Sunnanå, Knut (ICES CM documents, Working paper, 1989)The combined acoustic and bottom trawl survey in the Barents Sea in winter has been carried out since 1981. The target species are cod and haddock, but in recent years the redfish species Sebastes marinus and Sebastes ... -
Evaluation of the North-East Arctic saithe (Pollachius virens) acoustic survey
Nedreaas, Kjell Harald (ICES CM Documents;1997/Y:20, Working paper, 1997)Since 1985 an acoustic survey specially designed for saithe has annually been conducted in October-November by the Institute of Marine Research (IMR) on the Norwegian near coastal banks. Since 1992 the survey has covered ... -
Fecundity of Greenland halibut (Reinhardtius hippoglossoides) in the north east Arctic
Gundersen, Agnes C.; Kjesbu, Olav Sigurd; Stene, Anne; Nedreaas, Kjell Harald (ICES CM documents, Working paper, 1998) -
Food and feeding habits of young saithe (Pollachius virens L.) on the coast of western Norway
Nedreaas, Kjell Harald (ICES CM Documents;1985/G:22, Working paper, 1985)The stomach contents of young saithe [Pollachius virens (L. )] (I- and II-group, mainly II-group) in two areas (A and B) on the western coast of Norway, has been analysed. When this juvenile saithe become two or mainly ... -
Measurements of Iceland scallop (Chlamys islandica müller) in the Spitzbergen and Bear Island regions
Hansen, Karsten; Nedreaas, Kjell Harald (ICES CM Documents;1986/K:26, Working paper, 1986)A stratified bottom trawl fish survey was carried out in the Spitzbergen and Bear Island regions from 9 September to 5 October 1985. On 30 out of 108 trawl stations, Chlamys islandica were caught as a by-catch, and ... -
Minimum legal length of Greenland halibut (Reinhardtius hippoglossoides) in ICES Sub-aeas I and II, and suggested criteria for legal bycatch of shorter specimens
Nedreaas, Kjell Harald (Working paper, 1991) -
Modelling the advection and diffusion of eggs and larvae of Northeast Arctic Greenland halibut
Ådlandsvik, Bjørn; Gundersen, Agnes C.; Nedreaas, Kjell Harald; Stene, Anne; Albert, Ole Thomas (ICES CM documents, Working paper, 1999)In later years there has been considerable uncertainty on the recruitment of the northeast Arctic stock of Greenland halibut (Reinhardtius hyppoglossoides). The abundance of several year classes originally considered ... -
The Norwegian reference fleet: co-operation between fisherman and scientists for multiple objectives
Nedreaas, Kjell Harald; Borge, Asbjørn; Godøy, Hallvard; Aanes, Sondre (ICES CM documents, Working paper, 2006)