Browsing ICES CM documents authored by IMR scientists (1949-2011) by Author "Øien, Nils"
Now showing items 1-12 of 12
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A review of the distribution, migrations, food, reproduction, exploitation and present abundance of humpback whales (Megatera novaeangliae) in the northeast Atlantic
Christensen, Ivar; Haug, Tore; Øien, Nils (ICES CM Documents;1990/N:10, Working paper, 1990)Most available knowledge about northeast Atlantic humpback whales (Megaptera novaeangliae) is based on information and experience gained during the pioneer period of modern whaling in Norwegian waters in 1868-1904 when ... -
Aerial and visual surveys to estimate harp seal pup production in the Greenland Sea
Øien, Nils; Øritsland, Torger (ICES CM documents, Working paper, 1993)In March-April 1991 a combined expedition using fixed-wing aircraft and ship-borne helicopter was carried out to estimate harp seal pup production in the Greenland Sea (the West Ice). Photographs were taken from the ... -
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 ... -
Distribution, abundance and trends in abundance of fin and humpback whales in the North Atlantic
Pike, Daniel; Gunnlaugsson, Th.; Øien, Nils; Desportes, Geneviève; Vikingsson, Gísli A.; Paxton, C. G. M.; Bloch, D. (ICES CM documents, Working paper, 2005)The North Atlantic Sightings Surveys (NASS) are a series of international cetacean line transect surveys, including participation from the Faroe Islands, Iceland, Norway and Spain, that have been conducted in 1987, 1989, ... -
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 ... -
Mink and fin whales along the Barents Sea shelf break - distribution, habitat and prey selection and competition
Skern-Mauritzen, Mette; Skaug, Hans Julius; Øien, Nils; Lindstrøm, Ulf (ICES CM Documents;2005/R:09, Working paper, 2005) -
Population genetic studies in Northeastern Atlantic minke whales
Berube, M.; Skaug, Hans Julius; Andersen, Liselotte W.; Haug, Tore; Øien, Nils (ICES CM documents;2007/L:21, Working paper, 2007)Minke whales are the most abundance species of baleen whales in the North Atlantic. As part of current management of minke whales in Norwegian and adjacent waters, a DNA-register have been established. The register ensures ... -
Summary of 1991 aerial and visual surveys to estimate harp seal production in the Greenland Sea
Øien, Nils (Working paper, 1993) -
The distribution and abundance of harbour porpoises and other small cetaceans in the North Sea and adjacent waters
Hammond, Philip S.; Benke, Harald; Breggren, Per; Collet, Anne; Heide-Jørgensen, Mads Peter; Heimlich-Boran, Sara; Leopold, Mardik; Øien, Nils (ICES CM Documents;1995/N:10, Working paper, 1995)To provide accurate and precise estimates of abundance for harbour porpoises and other small cetaceans throughout the North Sea and adjacent waters, an intensive shipboard and aerial sightings survey was conducted in ... -
The distribution and abundance of harbour porpoises and other small cetaceans in the North Sea and adjacent waters
Hammond, Philip S.; Benke, Harald; Breggren, Per; Collet, Anne; Heide-Jørgensen, Mads Peter; Heimlich-Boran, Sara; Leopold, Mardik; Øien, Nils (ICES CM Documents;1995/N:10, Working paper, 1995)To provide accurate and precise estimates of abundance for harbour porpoises and other small cetaceans throughout the North Sea and adjacent waters, an intensive shipboard and aerial sightings survey was conducted in ... -
Update of mark-recapture estimates of harp seal pup production in the Greenland Sea
Øien, Nils (Working paper, 1993) -
Using mark-recapture methods to estimate pup production of harp seals (Phoca groenlandica) in the Greenland Sea
Øien, Nils; Øritsland, Torger (ICES CM documents, Working paper, 1992)During the period 1968-1991 16,917 harp seal pups have been tagged in the Greenland Sea. From 1976 until 1991, there have been 468 recoveries. 73 of these, mostly drowned in fishing gear or part of Inuit catches at Greenland, ...