• 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 ...
    • Animal-borne telemetry: An integral component of the ocean observing toolkit 

      Harcourt, Rob; Sequeira, Ana M.M.; Zhang, Xuelei; Roquet, Fabien; Komatsu, Kosei; Heupel, Michelle; McMahon, Clive; Whoriskey, Fred; Meekan, Mark; Carroll, Gemma; Brodie, Stephanie; Simpfendorfer, Colin; Hindell, Mark; Jonsen, Ian; Costa, Daniel P.; Block, Barbara; Muelbert, Mônica; Woodward, Bill; Weise, Mike; Aarestrup, Kim; Biuw, Martin; Boehme, Lars; Bograd, Steven J.; Cazau, Dorian; Charrassin, Jean-Benoit; Cooke, Steven J.; Cowley, Paul; de Bruyn, P.J. Nico; Jeanniard du Dot, Tiphaine; Duarte, Carlos; Eguíluz, Victor M.; Ferreira, Luciana C.; Fernández-Gracia, Juan; Goetz, Kimberly; Goto, Yusuke; Guinet, Christophe; Hammill, Mike; Hays, Graeme C.; Hazen, Elliott L.; Hückstädt, Luis A.; Huveneers, Charlie; Iverson, Sara; Jaaman, Saifullah Arifin; Kittiwattanawong, Kongkiat; Kovacs, Kit M.; Lydersen, Christian; Moltmann, Tim; Naruoka, Masaru; Phillips, Lachlan; Picard, Baptiste; Queiroz, Nuno; Reverdin, Gilles; Sato, Katsufumi; Sims, David W.; Thorstad, Eva Bonsak; Thums, Michele; Treasure, Anne M.; Trites, Andrew W.; Williams, Guy D.; Yonehara, Yoshinari; Fedak, Mike A. (Journal article; Peer reviewed, 2019)
      Animal telemetry is a powerful tool for observing marine animals and the physical environments that they inhabit, from coastal and continental shelf ecosystems to polar seas and open oceans. Satellite-linked biologgers and ...
    • Autumn movements of fin whales (Balaenoptera physalus) from Svalbard, Norway, revealed by satellite tracking 

      Lydersen, Christian; Vacquie-Garcia, Jade; Heide-Jørgensen, Mads-Peter; Øien, Nils Inge; Guinet, Christophe; Kovacs, Kit M. (Peer reviewed; Journal article, 2020)
      Insight into animal movements is essential for understanding habitat use by individuals as well as population processes and species life-history strategies. In this study, we instrumented 25 fin whales with ARGOS ...
    • Distribution of sex and age groups of ringed seals Pusa hispida in the fast-ice breeding habitat of Kongsfjorden, Svalbard 

      Krafft, Bjørn A.; Kovacs, Kit M.; Lydersen, Christian (Journal article; Peer reviewed, 2007-04-16)
      Spatial distribution of various age- and sex groups of ringed seals (N = 94; 19 adult males, 33 adult females and 42 subadults) was studied in their fast-ice breeding habitat in Kongsfjorden, Svalbard, during May 2004. ...
    • Hooded seal Cystophora cristata foraging areas in the Northeast Atlantic Ocean—Investigated using three complementary methods 

      Vacquie-Garcia, Jade; Lydersen, Christian; Biuw, Martin; Haug, Tore; Fedak, Michael A.; Kovacs, Kit M. (Journal article; Peer reviewed, 2017)
      Identifying environmental characteristics that define the ecological niche of a species is essential to understanding how changes in physical conditions might affect its distribution and other aspects of its ecology. The ...
    • Ice-algal carbon supports harp and ringed seal diets in the European Arctic: evidence from fatty acid and stable isotope markers 

      Kunisch, Erin; Graeve, Martin; Gradinger, Rolf; Haug, Tore; Kovacs, Kit M.; Lydersen, Christian; Varpe, Øystein Heggernes; Bluhm, Bodil (Peer reviewed; Journal article, 2021)
      Sea-ice declines in the European Arctic have led to substantial changes in marine food webs. To better understand the biological implications of these changes, we quantified the contributions of ice-associated and pelagic ...
    • Importance of fast ice and glacier fronts for female polar bears and their cubs during spring in Svalbard, Norway 

      Freitas, Carla; Kovacs, Kit M.; Andersen, Magnus; Aars, Jon; Sandven, Stein; Skern-Mauritzen, Mette; Pavlova, Olga; Lydersen, Christian (Journal article; Peer reviewed, 2012-02-13)
      Arctic sea ice is declining rapidly, making it vital to understand the importance of different types of sea ice for ice-dependent species such as polar bears Ursus maritimus. In this study we used GPS telemetry (25 polar ...
    • Instrumentation and handling effects on Antarctic fur seals (Arctocephalus gazella) 

      Blanchet, Marie Ann; Lydersen, Christian; Biuw, Erik Martin; Bruin, N; Hofmeyr, Greg; Krafft, Bjørn Arne; Kovacs, Kit M. (Journal article; Peer reviewed, 2014-02-21)
      The use of biologging instruments has greatly improved our understanding of the behaviour, physiology and ecology of free-ranging marine mammals. However, handling wild animals and attaching instruments to streamlined ...
    • Late summer distribution and abundance of ice-associated whales in the Norwegian High Arctic 

      Vacquié-Garcia, Jade; Lydersen, Christian; Marques, Tiago A.; Aars, Jon; Ahonen, Heidi; Skern-Mauritzen, Mette; Øien, Nils Inge; Kovacs, Kit M. (Peer reviewed; Journal article, 2017)
    • Managing fishery development in sensitive ecosystems: identifying penguin habitat use to direct management in Antarctica 

      Trathan, Phil N.; Warwick-Evans, Victoria; Hinke, Jefferson Thomas; Young, Emma F.; Murphy, Eugene J.; Carneiro, Ana Paula B.; Dias, Maria P.; Kovacs, Kit M.; Lowther, Andrew; Godø, Olav Rune; Kokubun, Nobuo; Kim, Jeong-Hoon; Takahashi, Akinori; Santos, Mercedes (Journal article; Peer reviewed, 2018)
      In the Southern Ocean, the at‐sea distributions of most predators of Antarctic krill are poorly known, primarily because tracking studies have only been undertaken on a restricted set of species, and then only at a limited ...
    • Marine mammal consumption and fisheries removals in the Nordic and Barents Seas 

      Skern-Mauritzen, Mette; Lindstrøm, Ulf Ove; Biuw, Martin; Elvarsson, Bjarki; Gunnlaugsson, Thorvaldur; Haug, Tore; Kovacs, Kit M.; Lydersen, Christian; McBride, Margaret; Mikkelsen, Bjarni; Øien, Nils Inge; Víkingsson, Gísli (Peer reviewed; Journal article, 2022)
      In this study, we assess prey consumption by the marine mammal community in the northeast Atlantic [including 21 taxa, across three regions: (I) the Icelandic shelf, Denmark Strait, and Iceland Sea (ICE); (II) the Greenland ...
    • Marine mammal hotspots across the circumpolar Arctic 

      Hamilton, Charmain D.; Lydersen, Christian; Aars, Jon; Acquarone, Mario; Atwood, Todd; Baylis, Alastair; Biuw, Martin; Boltunov, Andrei N.; Born, Erik W.; Boveng, Peter; Brown, Tanya M.; Cameron, Michael; Citta, John; Crawford, Justin; Dietz, Rune; Elias, Jim; Ferguson, Steven H.; Fisk, Aaron; Folkow, Lars; Frost, Kathryn J.; Glazov, Dmitri M.; Granquist, Sandra M.; Gryba, Rowenna; Harwood, Lois; Haug, Tore; Heide-Jørgensen, Mads Peter; Hussey, Nigel E.; Kalinek, Jimmy; Laidre, Kristin L.; Litovka, Dennis I.; London, Josh M.; Loseto, Lisa L.; MacPhee, Shannon; Marcoux, Marianne; Matthews, Cory J. D.; Nilssen, Kjell Tormod; Nordøy, Erling Sverre; O’Corry-Crowe, Greg; Øien, Nils Inge; Olsen, Morten Tange; Quakenbush, Lori; Rosing-Asvid, Aqqalu; Semenova, Varvara; Shelden, Kim E. W.; Shpak, Olga V.; Stenson, Garry; Storrie, Luke; Sveegaard, Signe; Teilmann, Jonas; Ugarte, Fernando; Von Duyke, Andrew L.; Watt, Cortney; Wiig, Øystein; Wilson, Ryan R.; Yurkowski, David J.; Kovacs, Kit M. (Peer reviewed; Journal article, 2022)
      Aim: Identify hotspots and areas of high species richness for Arctic marine mammals. Location: Circumpolar Arctic. Methods: A total of 2115 biologging devices were deployed on marine mammals from 13 species in the Arctic ...
    • Marine mammal hotspots in the Greenland and Barents Seas 

      Hamilton, Charmain Danielle; Lydersen, Christian; Aars, Jon; Biuw, Martin; Boltunov, Andrei; Born, Erik W.; Dietz, Rune; Folkow, Lars; Glazov, Dmitry M.; Haug, Tore; Heide-Jørgensen, Mads-Peter; Kettemer, Lisa Elena; Laidre, Kristin L.; Øien, Nils Inge; Nordøy, Erling Sverre; Rikardsen, Audun H.; Rosing-Asvid, Aqqalu; Semenova, Varvara; Shpak, Olga V.; Sveegaard, Signe; Ugarte, Fernando; Wiig, Øystein; Kovacs, Kit M. (Peer reviewed; Journal article, 2021)
      Environmental change and increasing levels of human activity are threats to marine mammals in the Arctic. Identifying marine mammal hotspots and areas of high species richness are essential to help guide management and ...
    • Niches of marine mammals in the European Arctic 

      MacKenzie, Kirsteen M.; Lydersen, Christian; Haug, Tore; Routti, Heli Anna Irmeli; Aars, Jon; Andvik, Clare Margaret; Borgå, Katrine; Fisk, A.T.; Meier, Sonnich; Biuw, Martin; Lowther, Andrew; Lindstrøm, Ulf Ove; Kovacs, Kit M. (Peer reviewed; Journal article, 2022)
      The Arctic is warming rapidly, with concomitant sea ice losses and ecosystem changes. The animals most vulnerable to Arctic food web changes are long-lived and slow-growing such as marine mammals, which may not be able to ...
    • Niches of marine mammals in the European Arctic 

      MacKenzie, Kirsteen M.; Lydersen, Christian; Haug, Tore; Routti, Heli Anna Irmeli; Aars, Jon; Andvik, Clare Margaret; Borgå, Katrine; Fisk, A.T.; Meier, Sonnich; Biuw, Martin; Lowther, Andrew; Lindstrøm, Ulf Ove; Kovacs, Kit M. (Peer reviewed; Journal article, 2022)
      The Arctic is warming rapidly, with concomitant sea ice losses and ecosystem changes. The animals most vulnerable to Arctic food web changes are long-lived and slow-growing such as marine mammals, which may not be able to ...
    • Origin and expansion of the world’s most widespread pinniped: Range-wide population genomics of the harbour seal (Phoca vitulina) 

      Liu, Xiaodong; Rønhøj Schjøtt, Suzanne; Granquist, Sandra M.; Rosing-Asvid, Aqqalu; Dietz, Rune; Teilmann, Jonas; Galatius, Anders; Cammen, Kristina; O’Corry-Crowe, Greg; Harding, Karin; Härkönen, Tero; Hall, Ailsa; Carroll, Emma L.; Kobayashi, Yumi; Hammill, Mike; Stenson, Garry; Frie, Anne Kirstine Højholt; Lydersen, Christian; Kovacs, Kit M.; Andersen, Liselotte W.; Hoffman, Joseph I.; Goodman, Simon J.; Vieira, Filipe G.; Heller, Rasmus; Moltke, Ida; Tange Olsen, Morten (Peer reviewed; Journal article, 2022)
      The harbour seal (Phoca vitulina) is the most widely distributed pinniped, occupying a wide variety of habitats and climatic zones across the Northern Hemisphere. Intriguingly, the harbour seal is also one of the most ...
    • Panel-based Assessment of Ecosystem Condition of Norwegian Barents Sea Shelf Ecosystems 

      Siwertsson, Anna; Husson, Berengere; Arneberg, Per; Assmann, Karen; Assmy, Philipp; Aune, Magnus; Bogstad, Bjarte; Børsheim, Knut Yngve; Cochrane, Sabine K.J.; Daase, Malin; Fauchald, Per; Frainer, André; Fransson, Agneta; Hop, Haakon; Höffle, Hannes; Gerland, Sebastian; Ingvaldsen, Randi Brunvær; Jentoft, Sissel; Kovacs, Kit M.; Leonard, Deanna Marie; Lind, Sigrid; Lydersen, Christian; Pavlova, Olga; Peuchet, Laurene; Primicerio, Raul; Renaud, Paul Eric; Solvang, Hiroko Kato; Skaret, Georg; van der Meeren, Gro Ingleid; Wassmann, Paul; Øien, Nils Inge (Rapport fra havforskningen;2023 - 14, Research report, 2023)
      The System for Assessment of Ecological Condition, coordinated by the Norwegian Environment Agency, is intended to form the foundation for evidence-based assessments of the ecological condition of Norwegian terrestrial and ...
    • Panel-based Assessment of Ecosystem Condition of Norwegian Barents Sea Shelf Ecosystems - Appendices 

      Siwertsson, Anna; Husson, Berengere; Arneberg, Per; Assmann, Karen; Assmy, Philipp; Aune, Magnus; Bogstad, Bjarte; Børsheim, Knut Yngve; Cochrane, Sabine K.J.; Daase, Malin; Fauchald, Per; Frainer, André; Fransson, Agneta; Hop, Haakon; Höffle, Hannes; Gerland, Sebastian; Ingvaldsen, Randi Brunvær; Jentoft, Sissel; Kovacs, Kit M.; Leonard, Deanna Marie; Lind, Sigrid; Lydersen, Christian; Pavlova, Olga; Peuchet, Laurene; Primicerio, Raul; Renaud, Paul Eric; Solvang, Hiroko Kato; Skaret, Georg; van der Meeren, Gro Ingleid; Wassmann, Paul; Øien, Nils Inge (Rapport fra havforskningen;2023 - 15, Research report, 2023)
    • Ringed seal (Pusa hispida) diet on the west coast of Spitsbergen, Svalbard, Norway: during a time of ecosystem change 

      Bengtsson, Oskar; Lydersen, Christian; Kovacs, Kit M.; Lindstrøm, Ulf (Peer reviewed; Journal article, 2020)
      Global warming is causing Atlantification of water masses and concomitant changes in food webs in the Barents Sea region. To determine whether changes that have been documented at lower trophic levels are impacting the ...
    • Status for miljøet i Barentshavet: Rapport fra Overvåkingsgruppen 2020 

      Jelmert, Anders; Sandø, Anne Britt; Frie, Anne Kirstine Højholt; Bogstad, Bjarte; Grøsvik, Bjørn Einar; Eriksen, Elena; Hallfredsson, Elvar H.; Stenevik, Erling Kåre; Bagøien, Espen; Ottersen, Geir; Skaret, Georg; Höffle, Hannes; Vee, Ida; Johansson, Josefina; Jørgensen, Lis Lindal; McBride, Margaret; Chierici, Melissa; Dalpadado, Padmini; Ingvaldsen, Randi Brunvær; Lien, Vidar Surén; Høines, Åge Sigurd; Fransson, Agneta; Sundfjord, Arild; von Quillfeldt, Cecilie; Lydersen, Christian; Hop, Haakon; Strøm, Hallvard; Johnsen, Hanne; Routti, Heli Anna Irmeli; Danielsen, Ida Kristin; Aars, Jon; Kovacs, Kit M.; Helgason, Lisa Bjørnsdatter; Itkin, Mikhail; Pavlova, Olga; Assmy, Philipp; Descamps, Sebastien; Lind, Sigrid; Gerland, Sebastian; Skotte, Gunnar; Stene, Kristine O.; Leiknes, Øystein; Skjerdal, Hilde Kristin; Jensen, Henning; Jensen, Andre Frantzen; Green, Norman Whitaker; Lorentsen, Svein Håkon (Rapport fra havforskningen;2020 - 13, Research report, 2020)
      I rapporten dekkes tre hovedtemaer: (1) Dominerende trekk i status og utvikling i økosystemet i Barentshavet siden 2016 med vekt på å beskrive hvordan sentrale prosesser påvirker tilstanden; (2) en mer detaljert beskrivelse ...