Blar i ICES CM documents authored by IMR scientists (1949-2011) på forfatter "Bjørge, Arne"
-
Comparative habitat use and foraging behaviour of harbour seals and grey seals in Western Norway
Bjørge, Arne (ICES CM Documents;1995/N:1, Working paper, 1995)Adult harbour seals at Froan nature reserve, Central Norway, were tagged with VHF radio tags and depthvelocity, hart rate and stomach temperature sensors combined with ultrasonic transmitters. An automatic shore based ... -
Current problems and research related to interactions between marine mammals and fisheries in Norwegian coastal and adjacent waters
Bjørge, Arne; Christensen, Ivar; Øritsland, Torger (ICES CM documents, Working paper, 1981)Current research and provisional results on the food items and feeding rates of killer whales, minke whales, grey seals, common seals and harp seals are presented. Commercial fish species constitute the major part of the ... -
Diet of the harbour seal, Phoca vitulina, in the Hvaler area in 1990 and 1991, compared to the abundance of fish in the area
Olsen, Marianne; Bjørge, Arne (ICES CM Documents;1992/N:19, Working paper, 1992)The harbour seal, Phoca vitulina, occurs in small groups along the entire coast of Norway. It is thought to interact with the commercial fisheries, both as predator and as final host for parasitic nematodes infecting ... -
Dispersal and By-Catch Mortality in Grey, Halichoerus grypus, and Harbour, Phoca vitulina, Seals Tagged at the Norwegian coast
Bjørge, Arne; Øien, Nils; Hartvedt, Siri; Bekkby, Trine (ICES CM documents, Working paper, 2000)The results of the study presented here are submitted to a refereed journal for consideration. The review and printing process may not be completed at the time of the 2000 ICES Annual Science Conference and the subsequent ... -
Harbor porpoise (Phocoena phocoena) in Norwegian waters
Bjørge, Arne; Aarefjord, Hilde; Kaarstad, Sølvi; Kleivane, Lars; Øien, Nils (ICES CM Documents;1991/N:16, Working paper, 1991)Recordings made on the Norwegian Sighting Survey 1988 and the North Atlantic Sighting Survey 1988 (NASS-89) indicate a divided off shore distribution during summer for harbour porpoises in Norwegian waters, with a southern ... -
Harbour seal Phoca vitulina habitat use and interactions with fisheries as explored by a combined GIS and population energetics model
Bjørge, Arne; Bekkby, Trine; Bakkestuen, Vegard; Framstad, Erik (ICES CM documents, Working paper, 2000) -
Parasitic nematodes in stomachs of grey seals, Halichoerus grypus, and common seals, Phoca vitulina, along the Norwegian coast.
Bjørge, Arne (ICES CM Documents;1984/N:3, Working paper, 1984)The nematode infestation in stomachs of 55 grey and 127 common seals were examined in the period 1976-1980. The seals were caught in Norwegian coastal waters between 62° and 67° North. In 48 adult grey seals the infestation ... -
The relationship between seal abundance and cod worm (Phocanema decipiens) infestation in cod in Norwegian coastal waters
Bjørge, Arne (ICES CM Documents;1985/N:4, Working paper, 1985)A sample of 52 cods, Gadus morhua, caught close to a grey seal, Halichoerus grypus, haul out site, and a total of 652 cods from 18 commercial catches (average sample size 36 cods) were examined with regard to cod worm ... -
Variation in stomach temperature as indicator of meal size in harbour seal, Phoca vitulina
Bekkby, Trine; Bjørge, Arne (ICES CM Documents;1995/N:12, Working paper, 1995)To understand the role of the marine mammals as components in foodwebs, it is important to know the composition frequency and size of their meals. Marine mammals have a core body temperature of about 37°C, and feed mainly ...