Blar i Brage IMR på forfatter "Øien, Nils"
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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 ... -
A white humpback whale (Megaptera novaeangliae) in the Atlantic Ocean, Svalbard, Norway, August 2012
Lydersen, Christian; Øien, Nils; Mikkelsen, Bjarni; Bober, Simon; Fisher, Dan; Kovacs, Kit M. (Journal article; Peer reviewed, 2013-04-26)A white humpback whale (Megaptera novaeangliae) was observed on several occasions off Svalbard, Norway, during August 2012. The animal was completely white, except for a few small dark patches on the ventral side of its ... -
Absolute and relative abundance of minke whales (Balaenoptera acutorostrata Lacépède) in the Northeast Atlantic
Øien, Nils (Doctoral thesis, 1990) -
Abundance of minke whales (Balaenoptera acutorostrata) in the Northeast Atlantic: variability in time and space
Skaug, Hans Julius; Øien, Nils; Schweder, Tore; Bøthun, Gjermund (Journal article; Peer reviewed, 2004)Regional sighting surveys with two independent observers on each vessel were conducted each year from 1996 to 2001. Northern minke whales (Balaenoptera acutorostrata) are mostly solitary animals and are only available for ... -
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 ... -
Baleen whale distributions and prey associations in the Barents Sea
Skern-Mauritzen, Mette; Johannesen, Edda; Bjørge, Arne; Øien, Nils (Journal article; Peer reviewed, 2011-03-28)We investigated the spatial associations between minke Balaenoptera acutorostrata, fin B. physalus and humpback Megaptera novaeangliae whales and their prey in the Barents Sea in late summer of 2003 to 2007. During these ... -
Beskrivelse av miljø og levende marine ressurser i havområdene ved Jan Mayen
Fossum, Petter; Mork, Kjell Arne; Tverberg, Vigdis; Boitsov, Stepan; Heldal, Hilde Elise; Bagøien, Espen; Rønning, Jon; Slotte, Aril; Vollen, Tone; Wienerroither, Rupert; Dahle, Geir; Buhl-Mortensen, Pål; Øien, Nils; Øigård, Tor Arne; Fauchald, Per (Rapport fra Havforskningen;Nr. 16 - 2012, Working paper, 2012-05)Resultatene fra et tokt med ”G.O. Sars” på Jan Mayenryggen i oktober 2011 blir sammenstilt med våre andre overvåkingsdata og info fra litteraturen. Hensikten med prosjektet er å beskrive miljø og marine ressurser på sokkelen ... -
Cetacean abundance and distribution in European Atlantic shelf waters to inform conservation and management
Hammond, Philip S.; Macleod, Kelly; Berggren, Per; Borchers, David L.; Burt, Louise; Cañadas, Ana; Desportes, Geneviève; Donovan, Greg P.; Gilles, Anita; Gillespie, Douglas; Gordon, Jonathan; Hiby, Lex; Kuklik, Iwona; Leaper, Russell; Lehnert, Kristina; Leopold, Mardik; Lovell, Phil; Øien, Nils; Paxton, C. G. M.; Ridoux, Vincent; Rogan, Emer; Samarra, Filipa; Scheidat, Meike; Sequeira, Marina; Siebert, Ursula; Skov, Henrik; Swift, René; Tasker, Mark L.; Teilmann, Jonas; Van Canneyt, Olivier; Vázquez, José Antonio (Journal article; Peer reviewed, 2013-06-11)The European Union (EU) Habitats Directive requires Member States to monitor and maintain at favourable conservation status those species identified to be in need of protection, including all cetaceans. In July 2005 we ... -
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 of rorquals and Atlantic cod in relation to their prey in the Norwegian high Arctic
Solvang, Hiroko K.; Haug, Tore; Knutsen, Tor; Gjøsæter, Harald; Bogstad, Bjarte; Hartvedt, Siri; Øien, Nils; Lindstrøm, Ulf (Peer reviewed; Journal article, 2021)Recent warming in the Barents Sea has led to changes in the spatial distribution of both zooplankton and fish, with boreal communities expanding northwards. A similar northward expansion has been observed in several rorqual ... -
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, ... -
Foreløpig rapport om analyse av data fra tellekort med båter i Nordøstatlanteren i juli 1988
Øien, Nils (Rapport SPS, Working paper, 1988-11-28) -
Genetic population structure of minke whales Balaenoptera acutorostrata from Greenland, the North East Atlantic and the North Sea probably reflects different ecological regions
Andersen, Liselotte W.; Born, Erik W.; Dietz, Rune; Haug, Tore; Øien, Nils; Bendixen, Christian (Journal article; Peer reviewed, 2003-02-04)A genetic study to determine the population structure of minke whales Balaenoptera acutorostrata in Greenland, the Central and NE Atlantic and the North Sea was carried out on a sample of 306 individuals. Samples were ... -
Grønlandssel - eit vandrande flokkdyr
Øien, Nils (Havforskningstema, Working paper, 1998) -
Grønlandssel i Nordatlanteren
Øien, Nils (Havforskningsnytt, Working paper, 1994) -
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 ... -
Hva kan et register over vågehvalens DNA fortelle om atferd og biologi?
Skaug, Hans Julius; Haug, Tore; Øien, Nils (Ottar;nr. 280 - 2010, Journal article, 2010)DNA-registeret for vågehval inneholder data fra alle de ca. 7000 individene som er tatt av norshe hvalfangere siden 1997. De genetishe profilene gjør det mulig å studere bestandsstruktur, vandringsmønster og bestandsstørrelse. ... -
Hybrids between common and Antarctic minke whales are fertile and can back-cross
Glover, Kevin A.; Kanda, Naoisha; Haug, Tore; Pastene, Luis A; Øien, Nils; Seliussen, Bjørghild Breistein; Sørvik, Anne Grete Eide; Skaug, Hans Julius (Journal article; Peer reviewed, 2013-04-15)Background: Minke whales are separated into two genetically distinct species: the Antarctic minke whale found in the southern hemisphere, and the common minke whale which is cosmopolitan. The common minke whale is further ... -
Investigating Population Genetic Structure in a Highly Mobile Marine Organism: The Minke Whale Balaenoptera acutorostrata acutorostrata in the North East Atlantic
Quintela, Maria; Skaug, Hans Julius; Øien, Nils; Haug, Tore; Seliussen, Bjørghild B.; Solvang, Hiroko Kato; Pampoulie, Christophe; Kanda, Naohisa; Pastene, Luis A.; Glover, Kevin A. (Journal article; Peer reviewed, 2014-09-30)Inferring the number of genetically distinct populations and their levels of connectivity is of key importance for the sustainable management and conservation of wildlife. This represents an extra challenge in the marine ... -
Joint PINRO/IMR report on the state of the Barents Sea ecosystem 2005/ 2006
Stiansen, Jan Erik; Aglen, Asgeir; Bogstad, Bjarte; Budgell, W. Paul; Dalpadado, Padmini; Dolgov, Andrey V.; Dommasnes, Are; Filin, Anatoly; Gjøsæter, Harald; Hauge, Kjellrun Hiis; Høines, Åge S.; Ingvaldsen, Randi; Johannesen, Edda; Jørgensen, Lis Lindal; Karsakov, A.L.; Klungsøyr, Jarle; Knutsen, Tor; Lien, Vidar S.; Loeng, Harald; Mehl, Sigbjørn; Buhl-Mortensen, Pål; Muchina, N.V.; Nesterova, V.N.; Olsen, Erik; Orlova, Emma L.; Ozhigin, Vladimir K.; Pedchenko, Andrey; Stenevik, Erling Kåre; Skogen, Morten D.; Titov, Oleg V.; Tjelmeland, Sigurd; Zabavnikov, V.B.; Ziryanov, S.V.; Zhukova, Nathalia; Øien, Nils; Aanes, Sondre (IMR/PINRO joint report series, Research report, 2006)