Blar i ICES CM documents authored by IMR scientists (1949-2011) på forfatter "Christensen, Ivar"
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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 ... -
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 ... -
Field work on bottle-nose whales in the Labrador Sea
Christensen, Ivar (ICES CM Documents;1971/N:12, Working paper, 1971) -
First record of gooseneck barnacles (Conchoderma auritum) on a minke whale (Balaenoptera acutorostrata)
Christensen, Ivar (ICES CM Documents;1985/N:9, Working paper, 1985)Clusters of a stalked barnacle, readily identified as Conchoderma auritum, were found attached to both damaged and complete baleen plates of a male minke whale caught off the coast of East Greenland on 16 July 1984. No ... -
Norwegian whale marking in the northeastern North Atlantic in 1975
Christensen, Ivar (ICES CM Documents;1975/N:19, Working paper, 1975) -
Report on the FAO/ACMRR Party on Marine Mammals, Ad Hoc Group II - Small Cetaceans and Sirenians
Christensen, Ivar (ICES CM Documents;1975/N:18, Working paper, 1975) -
Seasonal distribution and abundance of killer whales around Lofoten and Vesterålen Islands, northern Norway
Similä, Tiu; Christensen, Ivar (ICES CM Documents;1992/N:11, Working paper, 1992)Killer whales (Orcinus orca) have been pohotoidentified around Lofoten and Vesterålen islands northern Norway during fall-winter (October-February) and summer (June-August) in 1990 and 1991. Some background data exists ... -
Whales and seals marked in the northeast Atlantic in 1974
Christensen, Ivar; Øritsland, Torger (ICES CM documents, Working paper, 1974)