Blar i Symposium proceedings på forfatter "Hylen, Arvid"
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Acoustic estimates of 0-group fish abundance in the Barents Sea and adjacent waters in 1992 and 1993
Nakken, Odd; Hylen, Arvid; Ona, Egil (PINRO-IMR Symposium, Conference object, 1995)Acoustic and biological data collected during the international O-group surveys in 1992 and 1993 were used to estimate the abundance of O-group fish of 4 species; cod, haddock, redfish and polar cod. The abundances of ... -
Comparison of the capture efficiency of 0-group fish in pelagic trawls
Hylen, Arvid; Korsbrekke, Knut; Nakken, Odd; Ona, Egil (PINRO-IMR Symposium, Conference object, 1995)In 1992 and 1993 experiments were carried out during the international 0-group fish surveys in order to study the capture efficiency of two pelagic trawls. The catches of the standard sampling trawl were compared with ... -
Estimating the maturity ogitive for Northeast Arctid cod by a modified assessment model
Hylen, Arvid; Rørvik, Carl Jakob (PINRO-IMR Symposium, Conference object, 1984)The exploitation (1967-77) of the Northeast Arctic cod is splitted in 12 different fisheries. The mesh assessment model is modified in order to estimate the maturity ogive on the basis of the length and the age distributions ... -
Pre-recruit studies of the North-East Arctic Greenland halibut stock
Hylen, Arvid; Nedreaas, Kjell Harald (PINRO-IMR Symposium, Conference object, 1995)Abundance indices of 0-group Greenland halibut (Reinhardtius hippoglossoides) from the international 0-group surveys in the Barents Sea showed a sudden decrease from 1987 to 1988 to a low level which has remained for the ... -
Precision and relevance of pre-recruit studies for fishery management related to fish stocks in the Barents Sea and adjacent waters : proceedings of the sixth IMR-PINRO Symposium, Bergen, 14-17 June 1994
Hylen, Arvid (PINRO-IMR Symposium;6, Research report, 1995)