• Diet and food availability for Northeast Atlantic minke whales Balaenoptera acutorostrata 

      Haug, Tore; Lindstrøm, Ulf; Nilssen, Kjell Tormod; Røttingen, Ingolf; Skaug, Hans Julius (ICES CM Documents;1995/N:19, Working paper, 1995)
      Ecological studies of the Northeast Atlantic minke whale (Balaenoptera acutorostra) were carried out during spring (mainly April-May), summer (June-July) and autumn (AugustSeptember) in 1993 and 1994. Four small-type ...
    • Diet of harp seals (Phoca groenlandica) feeding between the breeding and moulting seasons in the southern Barents and White Seas 

      Nilssen, Kjell Tormod; Haug, Tore; Potelov, Vladimir; Stasenkov, Vladimir (ICES CM Documents;1993/N:8, Working paper, 1993)
      The harp seal Phoca groenlandica is the most abundant seal species in the Barents Sea. In order to evaluate the ecological importance of the species, diet studies have recently been carried out at various times of the ...
    • Diets of hooded seals in coastal and drift ice waters along the east coast of Greenland 

      Haug, Tore; Nilssen, Kjell Tormod; Lindblom, Lotta; Lindstrøm, Ulf (ICES CM documents, Working paper, 2005)
      To provide data on the feeding habits of hooded (Cystophora cristata) seals in the Greenland Sea, seals were collected for scientific purposes on expeditions with R/V”Jan Mayen”, conducted in the pack ice belt east of ...
    • Distribution and number of marine mammals in the open Barents Sea and their connection with capelin and polar cod distribution 

      Zabavnikov, V.B.; Zyryanov, S.V.; Tereschenko, V.V.; Nilssen, Kjell Tormod; Lindstrøm, Ulf (IMR/PINRO Joint Report Series, Conference object, 2005)
      This paper presents the data on the character of distribution and the assessment of the number of marine mammals in the open part of the Barents Sea in autumn 2001-2004 by the results from PINRO’s aerial surveys using the ...
    • Distribution and number of marine mammals in the open Barents Sea and their connection with capelin and polar cod distribution 

      Zabavnikov, V.B.; Zyryanov, S.V.; Tereschenko, V.V.; Nilssen, Kjell Tormod; Lindstrøm, Ulf (IMR/PINRO Joint Report Series, Conference object, 2005)
      This paper presents the data on the character of distribution and the assessment of the number of marine mammals in the open part of the Barents Sea in autumn 2001-2004 by the results from PINRO’s aerial surveys using the ...
    • Distribution and number of marine mammals in the open Barents Sea and their connection with capelin and polar cod distribution [presentation] 

      Zabavnikov, V.B.; Zyryanov, S.V.; Tereschenko, V.V.; Nilssen, Kjell Tormod; Lindstrøm, Ulf (IMR/PINRO Joint Report Series;2/2005, Conference object, 2005)
    • Distribution and number of marine mammals in the open Barents Sea and their connection with capelin and polar cod distribution [presentation] 

      Zabavnikov, V.B.; Zyryanov, S.V.; Tereschenko, V.V.; Nilssen, Kjell Tormod; Lindstrøm, Ulf (IMR/PINRO Joint Report Series;2/2005, Conference object, 2005)
    • Estimation of harp seal pup production in the Greenland Sea using spatial analysis on aerial survey data 

      Salberg, Arnt-Børre; Stenson, Garry B.; Haug, Tore; Nilssen, Kjell Tormod (ICES CM documents, Working paper, 2005)
      From 14 March to 6 April 2002 aerial surveys were carried out in the Greenland Sea packice to assess the pup production of the Greenland Sea population of harp seals Pagophilus groenlandicus. One xed-wing twin-engined ...
    • Estimation of hooded seal pup production in the Greenland Sea pack-ice during the 2005 whelping season 

      Haug, Tore; Nilssen, Kjell Tormod; Frie, Anne Kirstine; Lindblom, Lotta; Poltermann, Michael; Salberg, Arnt-Børre; Skavberg, Nils Erik; Fagerheim, Kjell Arne ([Toktrapport/Havforskningsinstituttet];Nr. 10 - 2005, Working paper, 2005)
    • Estimation of Pup Production of Hooded and Harp Seals in the Greenland Sea in 2007: Reducing Uncertainty Using Generalized Additive Models 

      Øigård, Tor Arne; Haug, Tore; Nilssen, Kjell Tormod; Salberg, Arnt-Børre (Journal article; Peer reviewed, 2010-02-11)
      The pup production of the Greenland Sea populations of hooded and harp seals were assessed in aerial surveys using two aircrafts for reconnaissance flights and photographic surveys along transects over the whelping areas ...
    • Fatty acids in harp seal blubber do not necessarily reflect their diet 

      Grahl-Nielsen, Otto; Haug, Tore; Lindstrøm, Ulf; Nilssen, Kjell Tormod (Journal article; Peer reviewed, 2011-03-28)
      The predator–prey relationship with respect to fatty acids (FAs) was studied in 57 harp seals Pagophilus groenlandicus and 16 potential prey species collected simultaneously in the northwestern Barents Sea in May–June 2006. ...
    • Field studies of harp seal (Phoca Groenlandica) distribution and feeding ecology in the Barents Sea in september 1990 

      Nilssen, Kjell Tormod; Haug, Tore; Potelov, Vladimir (ICES CM Documents;1991/N:3, Working paper, 1991)
      The harp seal Phoca groenlandica is the most abundant seal species in the Barents Sea, and it may be a significant predator on other marine resources in this area. In order to evaluate the ecological role of harp seals, ...
    • Functional relationship between harp seal body condition and available prey in the Barents Sea 

      Øigård, Tor Arne; Lindstrøm, Ulf; Haug, Tore; Nilssen, Kjell Tormod; Smout, Sophie (Journal article; Peer reviewed, 2013-06-12)
      The Barents Sea ecosystem has undergone substantial ecological fluctuations over the past 40 yr, including large variations in the abundance of capelin Mallotus villosus, herring Clupea harrengus, krill Thysanoessa sp. and ...
    • Harp seal (Phoca Groenlandica) invasions in north Norwegian coastal waters: A preliminary report on age composition and feeding habits 

      Haug, Tore; Krøyer, Ari B.; Nilssen, Kjell Tormod; Ugland, Karl Inne (ICES CM Documents;1990/N:6, Working paper, 1990)
      Since 1978 large numbers of harp seals (Phoca groenlandica) have invaded areas of North Norway in winter and spring. In 1987 and 1988 dramatic increases occurred both in magnitude and geographic extent of these seal ...
    • Kystvann (bunn og pelagisk) 

      Oug, Eivind; Christie, Hartvig; Eikrem, Wenche; van der Meeren, Gro; Nilssen, Kjell Tormod; Lorentsen, Svein-Håkon (DN-utredning;3-2010, Chapter, 2010-09-23)
      Norge har en kystlinje på ca. 2500 km målt langs den såkalte grunnlinjen fra svenskegrensen til Grense Jakobselv. Grunnlinjen trekkes mellom ytterpunktene på landformasjoner som stikker opp over vannflaten. Målt langs land ...
    • Marine indikatorer 

      van der Meeren, Gro; Øigård, Tor Arne; Øien, Nils; Nilssen, Kjell Tormod; Oug, Eivind; Sunnanå, Knut; Jakobsen, Tore; Mehl, Sigbjørn; Kvamme, Cecilie; Torstensen, Else; Stenevik, Erling Kåre; Planque, Benjamin; Helle, Gunnar; Gjøsæter, Jakob; Skiftesvik, Anne Berit; Aglen, Asgeir; Johannessen, Tore; Dommasnes, Are; Naustvoll, Lars-Johan; Moy, Frithjof E.; Falkenhaug, Tone; Melle, Webjørn; Knutsen, Tor; Eriksen, Elena; Jørgensen, Lis Lindal; Fosså, Jan Helge; Bannister, Raymond; Buhl-Mortensen, Lene; Buhl-Mortensen, Pål; Strand, Øivind; Søvik, Guldborg; Jelmert, Anders; Knutsen, Jan Atle; Enersen, Svein Erik; Edvardsen, Hanne; Kroglund, Tone; Pedersen, Atle; Eikrem, Wenche; Bekkby, Trine; Tveite, Stein (DN-utredning;4-2010, Chapter, 2010-09)
      The Nature Index (NI) is established to get an overview of the state and development of biodiversity within the major ecosystems of Norway. It includes marine, limnic and terrestrial ecosystems. The aim of the index is to ...
    • Marine indikatorer 

      van der Meeren, Gro; Øigård, Tor Arne; Øien, Nils; Nilssen, Kjell Tormod; Oug, Eivind; Sunnanå, Knut; Jakobsen, Tore; Mehl, Sigbjørn; Kvamme, Cecilie; Torstensen, Else; Stenevik, Erling Kåre; Planque, Benjamin; Helle, Gunnar; Gjøsæter, Jakob; Skiftesvik, Anne Berit; Aglen, Asgeir; Johannessen, Tore; Dommasnes, Are; Naustvoll, Lars-Johan; Moy, Frithjof E.; Falkenhaug, Tone; Melle, Webjørn; Knutsen, Tor; Eriksen, Elena; Jørgensen, Lis Lindal; Fosså, Jan Helge; Bannister, Raymond; Buhl-Mortensen, Lene; Buhl-Mortensen, Pål; Strand, Øivind; Søvik, Guldborg; Jelmert, Anders; Knutsen, Jan Atle; Enersen, Svein Erik; Edvardsen, Hanne; Kroglund, Tone; Pedersen, Atle; Eikrem, Wenche; Bekkby, Trine; Tveite, Stein (DN-utredning;4-2010, Chapter, 2010-09)
      The Nature Index (NI) is established to get an overview of the state and development of biodiversity within the major ecosystems of Norway. It includes marine, limnic and terrestrial ecosystems. The aim of the index is to ...
    • Marinøkologiske ringvirkninger av vindmølleparker til havs 

      Steen, Henning; Nilssen, Kjell Tormod; Agnalt, Ann-Lisbeth; Alvsvåg, John; Asplin, Lars; Jelmert, Anders; Dahl, Einar; Dalen, John (Fisken og havet, Research report, 2008)
      There is an increasing need for energy. Considerable efforts are being made to develop environmentally friendly energy sources. Generating electric energy using wind turbines is one of the methods that has gained widespread, ...
    • Merketokt, grønlandssel i Svalbardområdet [25/5 - 12/6, 2010] 

      Nilssen, Kjell Tormod; Poltermann, Michael; Shafikov, Ilias ([Toktrapport/Havforskningsinstituttet];Nr. 4 - 2010, Working paper, 2010)
    • Preliminary data on feeding and condition of Barents Sea harp seals (Phoca Groenlandica) throughout the year 

      Nilssen, Kjell Tormod; Haug, Tore; Potelov, Vladimir; Timoshenko, Yuri (ICES CM Documents;1992/N:5, Working paper, 1992)
      In order to evaluate the ecological role of the most abundant seal species in the Barents Sea, the harp seal Phoca groenlandica, field studies have been carried out in September 1990, in February, March/April, June and ...