Browsing Brage IMR by Author "Gjøsæter, Jakob"

Abundance and production of lanternfish (Myctophidae) in the western and northern Arabian Sea

Gjøsæter, Jakob (Fiskeridirektoratets skrifter, Serie Havundersøkelser, Research report, 1981)

The mesopelagic fauna of the western and northern Arabian Sea between Mogadisco and the Indo-Pakistanean border was studied on cruises with R.V. "Dr. Fridtjof Nansen" during 1975-1976. A deep scattering layer was observed ...

Age, growth, and mortality of the myctophid fish, Benthosema glaciale (Reinhardt), from western Norway

Gjøsæter, Jakob (Journal article; Peer reviewed, 1973-05-18)

Age and growth of Benthosema glaciale collected by midwater trawl in western Norway have been studied. Otoliths were used for age determination. The mean annual mortality in age groups I to IV was 52%. Older specimens were ...

Age, Growth, Reproduction and Feeding of Benthosema glaciale (Myctophidae) from Western Norway

Gjøsæter, Jakob (ICES CM Documents;1970/H:5, Working paper, 1970)

Akustiske undersøkelser i Oslofjorden og i Risør- og Kragerøområdet på den norske Skagerrakkysten i mai 1993

Gjøsæter, Jakob; Enersen, Kate; Enersen, Svein Erik ([Toktrapport/Havforskningsinstituttet];, Working paper, 1993)

Akustiske undersøkelser i Risør- og Kragerøområdet på den norske Skagerrakkysten

Gjøsæter, Jakob; Enersen, Kate; Enersen, Svein Erik; Nakken, Odd (Rapport fra forskningsstasjonen Flødevigen;1993 Nr.2, Working paper, 1993)

Alder, vekst, forplantning og ernæring hos nordlig lysprikkfisk, Benthosema glaciale, fra Byfjorden og Herdlefjorden

Gjøsæter, Jakob (Master thesis, 1970)

Algeoppblomstringen i Skagerrak i mai 1988 : Ettervirkninger på på fisk og bunnfauna langs Sørlandskysten

Johannessen, Tore; Gjøsæter, Jakob (Flødevigen meldinger;Nr. 6 - 1990, Working paper, 1990)

Algeoppblomstringen i Skagerrak i mai 1988, effekter på bunnfauna på Sørlandskysten

Gjøsæter, Jakob; Johannessen, Tore (Flødevigen meldinger, Working paper, 1988)

Annual report 1987 of the project "Cultivation of catfish"

Moksness, Erlend; Gjøsæter, Jakob; Johannessen, Tore (Working paper, 1988)

Beskatning av sjøørret i sjø på Skagerrakkysten og i Oslofjorden (Et forprosjekt)

Gjøsæter, Jakob; Knutsen, Jan Atle; Knutsen, Henry; Aass, Asbjørn; Sollie, Aadne (Fisken og havet, Research report, 1996)

The basis for the pilot project was today's official fishing statistics which show a catch of sea trout in the sea in the order of size 1 tonne/year for the Skagerrak Coast and the Oslofjord. This is not in accordance ...

Bunnfisk på den norske kontinentalskråning

Bakken, Erling; Lahn-Johannessen, John; Gjøsæter, Jakob (Fisken og havet;1975 - Nr.2, Research report, 1975)

Investigations of distribution and abundance of demersal fish in 400—1000 m depth were carried out in three selected areas off Norway in July—August 1974. Based on catches in 48 hauls by bottom trawl and 3 longline settings ...

Competition for food and predator-prey relationships among young cod (Gadus Morhua) and some other fish from shallow waters. In: Flødevigen rapportserie no 1, 1988

Gjøsæter, Jakob (Flødevigen rapportserie, Research report, 1988)

Experiments were conducted to study food competition between young cod (20-30 cm) and some other fish from shallow waters. When food was dropped from the surlace the cod took much more than the other species, but ...

Demersal fish on the continental slope off Norway

Gjøsæter, Jakob (ICES CM documents;1975/F:29, Working paper, 1975)

Investigations on distribution and abundance of demersal fish in 400-1000 m depth were carried out in three selected areas off Norway in July-August 1974. Based on catches in 48 hauls by bottom trawl and 3 long-line settings ...

Diel vertical migration patterns in juvenile cod from the Skagerrak coast

Espeland, Sigurd Heiberg; Thoresen, Adine Guldborg; Olsen, Esben Moland; Stige, Leif Christian; Knutsen, Halvor; Gjøsæter, Jakob; Stenseth, Nils Christian (Journal article; Peer reviewed, 2010-04-29)

We demonstrated a clear year-round diel vertical migration pattern (DVM) of small (26 to 45 cm) Skagerrak coastal cod Gadus morhua on a small geographic scale. Generalized additive models (GAMs) were used to make inferences ...

Distribution and density of goldsinny wrasse (Ctenolabrus rupestris) (Labridae) in the Risør and Arendal areas along the Norwegian Skagerrak coast

Gjøsæter, Jakob (Journal article; Peer reviewed, 2002-03)

Samples of fish were collected in the Arendal and Risør areas on the Norwegian Skagerrak coast during the period 1986 to 1990 using a beach seine at 36 different locations. In the Risør area, 131 out of 254 hauls yielded ...