Blar i Brage IMR på forfatter "Gjøsæter, Jakob"
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Effects of Fishing Tourism in a Coastal Municipality: a Case Study from Risør, Norway
Moksness, Erlend; Gjøsæter, Jakob; Lagaillarde, Guillaume; Mikkelsen, Eirik; Olsen, Esben Moland; Sandersen, Håkan T.; Vølstad, Jon Helge (Journal article; Peer reviewed, 2011)Recreational fishing has become an important part of the Norwegian tourist industry. The coastal municipality of Risør, southern Norway, is considering further development of its marine fishing tourism to increase local ... -
Estimates of stock size and reproduction of the Barents Sea capelin in 1970-1972
Dragesund, Olav; Gjøsæter, Jakob; Monstad, Terje (Fiskeridirektoratets skrifter, Serie Havundersøkelser, Research report, 1973)DRAGESUND, O., GJØSÆTER, J. and MONSTAD, T. 1973. Estimates of stock size and reproduction of the Barents Sea capelin in 1970-1972. FiskDir. Skr. Ser. HavUnders., 16: 105-139. The distribution and migration of young ... -
Estimates of the abundance of mesopelagic fish off southern Norway and west of the British Isles 1971-1976. In: Flødevigen rapportserie no 1, 1986
Gjøsæter, Jakob (Flødevigen rapportserie, Research report, 1986)Mesopelagic fish were studied using 38 and 50 kHz echo sounders and electronic integrators on cruises covering the Norwegian Deep, Skagerrak, the slope north of the North Sea and west of the British Isles during 1971-1976. ... -
Ettervirkninger av oppblomstringen av giftige alger i Skagerrak i mai 1988
Johannessen, Tore; Gjøsæter, Jakob (Havforskningsnytt, Working paper, 1993) -
Fecundity and egg size of spring spawning Barents Sea capelin
Gjøsæter, Jakob; Monstad, Terje (Fiskeridirektoratets skrifter, Serie Havundersøkelser, Research report, 1973)Fecundity of Barents Sea capelin was studied in 1971 and 1972. No differences were found between these two years. The regression line log F = 3.4871 x log L - 0.2049 was fitted to the whole material. This is in good ... -
Feeding behaviour of Diaphus dumerilii in NW Africa with notes on its relations to other myctophids in the area. In: Flødevigen rapportserie no 1, 1988
Alwis, Ajanta de; Gjøsæter, Jakob (Flødevigen rapportserie, Research report, 1988)The feeding pattern of D. dumerilii was studied based on material collected by R/V "Dr. Fridtjof Nansen" from west Africa (from Mauritania to Nigeria-Congo area and the Cape Verde Islands) in 1981. The other species. ... -
Fishery for goldsinny wrasse (Ctenolabrus rupestris) (Labridae) with pots along the Norwegian Skagerrak coast
Gjøsæter, Jakob (Journal article; Peer reviewed, 2002-03)Goldsinny wrasse (Ctenolabrus rupestris) was captured in pots during the years 1994-98 in the area between Arendal and Homborsund, west of Grimstad, along the Norwegian Skagerrak coast. The pots, made of steel 1 x 1 cm ... -
Fiskerekruttering og miljøforhold i strandsonen langs den norske Skagerrakkysten høsten 1992
Sollie, Aadne; Gjøsæter, Jakob (Rapport fra forskningsstasjonen Flødevigen;1993 Nr.3, Working paper, 1993) -
Fiskerekruttering og miljøforhold i strandsonen langs den Norske Skagerrakkysten høsten 1994
Sollie, Aadne; Gjøsæter, Jakob (Fisken og havet, Research report, 1995)Some important fish species as cod, pollack and whiting have their nursery areas in the littoral zone. A study of the abundance of these species in the littoral zone can therefore give an indication of recruitment. Studies ... -
Fiskeressurser i Oslofjorden : undersøkelser i 1993-1995
Gjøsæter, Jakob (Fisken og havet, Research report, 1997)Distribution and abundance of cod, Gadus morhua L., and other fish species was studied during two cruises with R.V.«G.M.Dannevig in the Oslofjord, one in May 1993 and one in September 1995. Simrad EK-500 echosounder (38 ... -
Fiskeressurser i ytre Oslofjord sammenlignet med resten av den norske Skagerrakkysten
Gjøsæter, Jakob; Danielssen, Didrik S. (Fisken og havet, Research report, 2004)The stock density of adult cod and other demersal fishes in the Outer Oslofjord is lower than on the rest of the Skagerrak coast, and also lower in this area. The fry production seems not to be reduced, but the fish disappear ... -
Fiskeressurser og miljøforhold i Ytre Oslofjord 2007
Gjøsæter, Jakob (Rapport fra havforskningen, Working paper, 2008-04)Det blir årlig tatt 41 strandnotstasjoner i Ytre Oslofjord, 33 av disse er tatt i mer enn 30 år, mens de 8 siste er tatt siden 2000. I årene 1984 – 1990 gjennomførte Havforskningsinstituttet en undersøkelse med standardisert ... -
Fiskeriundersøkelser ved Bjørnøya, Spitsbergen og i Barentshavet 1. - 27. juni 1971
Hylen, Arvid; Gjøsæter, Jakob; Smedstad, Odd M. (Fisken og havet, Research report, 1972)Distribution and abundance of the commercial important species in the investigated area were observed. Special attention was paid to the prerecruits of cod, haddock and redfish. Polar cod and capelin were also studied. The ... -
The food of the myctophid fish, Benthosema glaciale (Reinhardt), from western Norway
Gjøsæter, Jakob (Journal article; Peer reviewed, 1973-05-18)Stomach contents were studied in Benthosema glaciale taken by midwater trawl in a fjord in western Norway. Copepods constitute the most important part of the identifiable stomach contents. Euphausiids were found during all ... -
Food selection in cod (Gadus morhua): reactions to colour and smell. In: Flødevigen rapportserie no 1, 1990
Gjøsæter, Jakob (Flødevigen rapportserie, Research report, 1990)Cod were offered food and food imitations with various colours and smells. When offered crabs with natural colour and with the carapace painted in red, yellow or green, they showed no significant preference. Neither did ... -
Genotype distributions of cod from the Norwegian Skagerrak coast
Gjøsæter, Jakob; Jørstad, Knut Eirik; Nævdal, Gunnar; Thorkildsen, Solveig (Journal article; Peer reviewed, 1992-02-20)The genotype distributions for cod, Gadus morhua L., from the southeastern coast of Norway are studied as part of a more extensive study on cod enhancement and the possible effects of mass liberation of 0-group cod on ... -
Gonatus fabricii (Lichtenstein). Undersøkelser i Norskehavet og det vestlige Barentshavet i juni-september 1982 og 1983.
Wiborg, Kristian Fredrik; Gjøsæter, Jakob; Beck, Inger Marie (Fisken og havet, Research report, 1984) -
Growth of the Barents Sea capelin of the year-classes 1967-70
Monstad, Terje; Gjøsæter, Jakob (ICES CM Documents;1977/H:39, Working paper, 1977)Otoliths of the 1967-70 year-classes of the Barents Sea capelin have been analyzed. For otoliths with radius < 0,74 mm there was a close, linear relation between fish length and otolith radia. For larger otoliths the ... -
Growth, production and reproduction of the myctophid fish Benthosema glaciale from western Norway and adjacent seas
Gjøsæter, Jakob (Fiskeridirektoratets skrifter, Serie Havundersøkelser, Research report, 1981)Age, growth, mortality, production and reproduction were studied on material of Benthosema glaciale from some fjords of western Norway and from the adjacent ocean. Samples were collected using pelagic trawls and Icaacs-Kidd ... -
Habitat selection and competition amongst 0-group gadidae off Mid-Norway
Godø, Olav Rune; Sunnanå, Knut; Gjøsæter, Jakob; Dragesund, Olav (Working paper, 1988)Juvenile gadids and other co-occurring fishes were collected during August in the years 1981 to 1983 at the Møre coast (Mid-Norway). The gears used were pelagic trawl, bottom trawl, Danish seine and beach seine. All species ...