Blar i Brage IMR på forfatter "Røttingen, Ingolf"
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Loddeundersøkelser i Barentshavet i juni 1975
Buzeta, Ramon; Hamre, Johannes; Røttingen, Ingolf; Aksland, Magnar (Fisken og havet, Research report, 1976)During June 1975 observations were made on the distribution, abundance and year-class composition of capelin in the Barents Sea. The distribution and abundance of the capelin stock were found to be similar compared with ... -
Loddeundersøkelser i Barentshavet i september - oktober 1976
Dommasnes, Are; Røttingen, Ingolf (Fisken og havet, Research report, 1977)The investigations were carried out in cooperation with Sovietrussian scientists from the Knipovich Polar Research Institute of Marine Fisheries and Oceanography in Murmansk. V.N. Shleinik was head of the Sovietrussian ... -
Loddeundersøkelser i Barentshavet i september - oktober 1977
Monstad, Terje; Røttingen, Ingolf (Fisken og havet, Research report, 1977)From 16 September to 7 October a survey was made on the Barents Sea capelin stock with observations on its distribution, abundance and age composition. Compared to the two previous years, the sea temperature this ... -
Loddeundersøkelser i Barentshavet i september-oktober 1975
Dommasnes, Are; Nakken, Odd; Røttingen, Ingolf (Fisken og havet, Research report, 1976)During September-October 1975 observations were made on the distribution, abundance and age composition of capelin in the Barents Sea. The geographical distribution was similar to the distribution in autumn 1974 with ... -
Long term bilateral Russian-Norwegian scientific co-operation as a basis for sustainable management of living marine resources in the Barents Sea : proceedings of the 12th Norwegian-Russian Symposium, Tromsø, 21-22 August 2007
Haug, Tore; Misund, Ole Arve; Gjøsæter, Harald; Røttingen, Ingolf (IMR/PINRO Joint Report Series, Research report, 2007)Since 1986 the Institute of Marine Research, (IMR), Norway and the Knipovich Polar Research Institute of Marine Fisheries and Oceanography (PINRO), Russia, have carried out a joint research program on the trophic relationships ... -
Long term bilateral Russian-Norwegian scientific co-operation as a basis for sustainable management of living marine resources in the Barents Sea : proceedings of the 12th Norwegian-Russian Symposium, Tromsø, 21-22 August 2007
Haug, Tore; Misund, Ole Arve; Gjøsæter, Harald; Røttingen, Ingolf (IMR/PINRO Joint Report Series, Research report, 2007)Since 1986 the Institute of Marine Research, (IMR), Norway and the Knipovich Polar Research Institute of Marine Fisheries and Oceanography (PINRO), Russia, have carried out a joint research program on the trophic relationships ... -
Management Strategies for Northeast Arctic Saithe: - should predation on herring be taken into account?
Mehl, Sigbjørn; Røttingen, Ingolf; Sandberg, Per (Working paper, 2006)The Norwegian Directorate of Fisheries has suggested a management strategy for Northeast Arctic saithe. Based on the assumption that a maximum sustainable yield is achieved at a fishing mortality below Fpa, a strategy ... -
Markedsbasert høsting av lodde
Isaksen, John Roald; Tjelmeland, Sigurd; Dreyer, Bent; Røttingen, Ingolf (Nofima rapportserie, Research report, 2011) -
Measurements of the density coefficient and average target strength of herring using purse seine.
Hagström, Olle; Røttingen, Ingolf (ICES CM Documents;1982/B:33, Working paper, 1982)Integrator values were obtained from a school of herring. The fish density of this school was determined on the basis of a purse seine catch. From these values a conversion factor and average target strength for herring ... -
Mykje vil ha meir
Sunnanå, Knut; Bogstad, Bjarte; Gjøsæter, Harald; Røttingen, Ingolf (Chronicle, 2010-09-22) -
Mykje vil ha meir
Sunnanå, Knut; Bogstad, Bjarte; Gjøsæter, Harald; Røttingen, Ingolf (Chronicle, 2010-09-22) -
Norsk vårgytende sild - Vintersildundersøkelser 1991
Røttingen, Ingolf ([Toktrapport/Havforskningsinstituttet];, Working paper, 1991-09-20) -
Norsk vårgytende sild i området sør for 62°N
Fossum, Petter; Høines, Åge S.; Røttingen, Ingolf; Slotte, Aril; Torstensen, Else (Research report, 2007-11) -
Norsk-russisk forskersamarbeid 50 år
Røttingen, Ingolf; Gjøsæter, Harald; Sunnset, Beate Hoddevik (Havforskningsnytt, Working paper, 2007) -
Norskehavet og sildebestanden
Røttingen, Ingolf (Havforskningsnytt, Working paper, 1996) -
Norwegian investigations in 1984 -1985 on juvenile herring
Røttingen, Ingolf (ICES CM Documents;1985/H:53, Working paper, 1985)This paper describes tlte Norwegian investigations on juvenile herring (0-, I- and II-group) of the Norwegian spring spawning stock. The investigations were carried out in Norwegian coastal areas and in the Barents Sea ... -
Norwegian spring spawning herring (Clupea harengus L.): protection of spawning areas in relation to changes in migration pattern
Røttingen, Ingolf; Slotte, Aril (ICES CM documents, Working paper, 1998) -
On the relation between echo intensity and fish density
Røttingen, Ingolf (Fiskeridirektoratets skrifter, Serie Havundersøkelser, Research report, 1976)On the relation between echo intensity and fish density. FiskDir. Skr.Ser.HavUnders., 16: 301-314. Integrated echo intensities for a wide range of fish densities were measured. The experiments were carried out on live ... -
Potential sources of unaccounted mortality in the fishery for Norwegian spring spawning herring
Røttingen, Ingolf; Sandberg, Per; Schultz, Bjarne; Slotte, Aril (ICES CM documents, Working paper, 2002)The stock of Norwegian spring spawning herring (NSSH) is managed and fished by 5 different parties. These are the EU, Faroe Islands, Iceland, Norway and Russia. The most common gears are purse seine and pelagic trawl. The ... -
Principles of the ecosystem approach to fisheries management
Filin, Anatoly; Røttingen, Ingolf (IMR/PINRO Joint Report Series, Conference object, 2005)