• Can mesopelagic mixed layers be used as feed source for salmon aquaculture ? 

      Olsen, Rolf Erik; Strand, Espen; Melle, Webjørn Raunsgård; Nørstebø, Jo Trelvik; Lall, Santosh P.; Tocher, Douglas R.; Sprague, Matthew (Journal article; Peer reviewed, 2019)
      Salmon aquaculture is in great need of good quality balanced protein and lipid sources, particularly marine omega-3 (n-3) long-chain polyunsaturated fatty acids (LC-PUFA), to sustain a further development of the industry. ...
    • The Continuous Plankton Recorder Survey – Monitoring plankton in the Nordic Sea 

      Edwards, M.; Helaouet, P.; Ostle, C.; Wootton, M.; Strand, Espen; Bagøien, Espen (Chapter, 2018)
      The warm-temperate calanoid copepod Calanus helgolandicus is becoming more common in the Nordic Seas with high records in 2016, which continued into 2017. The Pacific diatom Neodenticula seminae (an indicator of trans-Arctic ...
    • Diet and trophic structure of fishes in the Barents Sea: the Norwegian-Russian program “Year of stomachs” 2015 - establishing a baseline 

      Eriksen, Elena; Benzik, Aleksander N.; Dolgov, Andrey V.; Skjoldal, Hein Rune; Vihtakari, Mikko Juhani; Johannesen, Edda; Prokhorova, Tatiana; Keulder-Stenevik, Felicia Juanita; Prokopchuk, Irina; Strand, Espen (Peer reviewed; Journal article, 2020)
      There is a long history of investigations of fish diet in the Barents Sea. The focus has been on commercially important fish species and their food consumption, while diet and interactions of other fishes have been studied ...
    • Distribution and composition of mesopelagic macroplankton and micronekton in the North-east Atlantic 

      Garcia-Seoane, E.; Klevjer, Thor A.; Knutsen, Tor; Macaulay, Gavin; Mork, Kjell Arne; Rosen, Shale; Strand, Espen; Wienerroither, Rupert; Underwood, Melanie; Melle, Webjørn Raunsgård (Lecture, 2018)
    • Dynamics of phytoplankton species composition, biomass and nutrients in the North Atlantic during spring and summer - A trans-Atlantic study 

      Naustvoll, Lars Johan; Melle, Webjørn Raunsgård; Klevjer, Thor A.; Drinkwater, Kenneth F.; Strand, Espen; Knutsen, Tor (Peer reviewed; Journal article, 2020)
      During a return trip in May–June 2013 from Bergen, Norway, to Nuuk, Greenland, on the Institute of Marine Research's R/V “G. O. Sars”, four ocean basins, the Norwegian, Iceland, Irminger and Labrador seas, were surveyed ...
    • Ecology of mesozooplankton across four North Atlantic basins 

      Strand, Espen; Klevjer, Thor A.; Melle, Webjørn Raunsgård; Knutsen, Tor (Peer reviewed; Journal article, 2020)
      A comparative study of the mesozooplankton in four North Atlantic basins is presented. During a trans-Atlantic expedition with R/V G.O. Sars in May and June 2013, the Norwegian Sea, Iceland Sea, Irminger Sea and Labrador ...
    • Fine-scale observations of physical and biological environment along a herring feeding migration route 

      Melle, Webjørn Raunsgård; Klevjer, Thor A.; Strand, Espen; Wiebe, Peter H.; Slotte, Aril; Huse, Geir (Peer reviewed; Journal article, 2020)
      We observed herring horizontal and vertical distribution during feeding migration along a 128 km transect across the Arctic front of the Norwegian and Iceland seas, in early June, in relation to its physical, chemical and ...
    • Mesopelagic Species and Their Poential Contribution to Food and Feed Security - A Case Study from Norway 

      Kjellevold, Marian; Strand, Espen; Sanden, Monica; Wiech, Martin (Peer reviewed; Journal article, 2020)
      The projected increase in global population will demand a major increase in global food production. There is a need for more biomass from the ocean as future food and feed, preferentially from lower trophic levels. In this ...
    • Micronekton biomass distribution, improved estimates across four north Atlantic basins 

      Klevjer, Thor A.; Melle, Webjørn Raunsgård; Knutsen, Tor; Strand, Espen; Korneliussen, Rolf; Dupont, Nicolas; Salvanes, Anne Gro Vea; Wiebe, Peter H. (Peer reviewed; Journal article, 2019)
      Distribution of micronekton was investigated during early summer of 2013, using data from a cruise covering the central parts of four north Atlantic basins, the Norwegian Sea (NS), Iceland Sea (ICS), Irminger Sea (IRS), ...
    • Overwintering distribution, inflow patterns and sustainability of Calanus finmarchicus in the North Sea 

      Gao, Shuang; Hjøllo, Solfrid Sætre; Falkenhaug, Tone; Strand, Espen; Edwards, Martin; Skogen, Morten D. (Peer reviewed; Journal article, 2021)
      Calanoid copepods are key taxa in the North Sea as they are the main food source for many fish stocks, such as herring, mackerel and cod. In this study we use an individual-based model for Calanus finmarchicus embedded in ...
    • Pelagiske økosystem i De nordiske hav - grunnlagsstudie knyttet til åpningsprosess for utforskning og utvinning av havbunnsmineraler på norsk kontinentalsokkel 

      Kutti, Tina; Mork, Kjell Arne; Chierici, Melissa; Børsheim, Knut Yngve; Bagøien, Espen; Knutsen, Tor; Broms, Cecilie; Klevjer, Thor A.; Strand, Espen; Gjøsæter, Harald; Stenevik, Erling Kåre; Høines, Åge Sigurd; Windsland, Kristin; Frie, Anne Kirstine Højholt (Rapport fra havforskningen;2021 - 41, Research report, 2021)
      Denne rapporten er en leveranse til bestillingen «Grunnlagsstudie: Pelagisk økosystem» fra Oljedirektoratet til Havforskningsinstituttet. Studien er bestilt i forbindelse med at regjeringen har igangsatt en prosess for ...
    • The record-warm Barents Sea and 0-group fish response to abnormal conditions 

      Eriksen, Elena; Bagøien, Espen; Strand, Espen; Primicerio, Raul; Prokhorova, Tatiana; Trofimov, Alexander; Prokopchuk, Irina (Peer reviewed; Journal article, 2020)
      The Barents Sea is a nursery area for many commercially and ecologically important fish stocks, and this whole region is presently subject to rapid climatic change from a cold period in the 1980s to a record warm period ...
    • Spatial distributions and seasonality of four Calanus species in the Northeast Atlantic 

      Strand, Espen; Bagøien, Espen; Edwards, Martin; Broms, Cecilie; Klevjer, Thor A. (Peer reviewed; Journal article, 2020)
      This paper analyses spatial and seasonal patterns for near-surface abundances of four Calanus species in the Northeast Atlantic based on monthly Continuous Plankton Recorder (CPR) Survey data collected during 2008–2016. ...
    • Structure and functioning of four North Atlantic ecosystems - A comparative study 

      Melle, Webjørn Raunsgård; Klevjer, Thor A.; Drinkwater, Kenneth F.; Strand, Espen; Naustvoll, Lars Johan; Wiebe, Peter H.; Aksnes, Dag Lorents; Knutsen, Tor; Sundby, Svein; Slotte, Aril; Dupont, Nicolas; Salvanes, Anne Gro Vea; Korneliussen, Rolf; Huse, Geir (Peer reviewed; Journal article, 2020)
      The epi- and mesopelagic ecosystems of four sub-polar ocean basins, the Labrador, Irminger, Iceland and Norwegian seas, were surveyed during two legs from Bergen, Norway, to Nuuk, Greenland, and back to Bergen. The survey ...
    • Vertical migration in adult Atlantic cod (Gadus morhua) 

      Strand, Espen; Huse, Geir (Journal article; Peer reviewed, 2007-11-21)
      We investigate the trade-offs associated with vertical migration and swimming speed of Atlantic cod (Gadus morhua) using an adaptive individual-based model. Simulations with varying distribution and occurrence of prey, ...
    • Vitenskapelig bakgrunnsmateriale for forvaltningsplan for raudåte 

      Broms, Cecilie; Strand, Espen; Utne, Kjell R.; Hjøllo, Solfrid; Sundby, Svein; Melle, Webjørn (Fisken og havet;8-2016, Research report, 2016-10)
      A management plan for Calanus finmarchicus has been completed by the Institute of Marine Research and the Directorate of Fisheries, in line with orders from the Ministry of Trade, Industry and Fisheries. The work is presented ...