• 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 ...
    • Blind dating—mate finding in planktonic copepods. I. Tracking the pheromone trail of Centropages typicus 

      Bagøien, Espen; Kiørboe, Thomas (Journal article; Peer reviewed, 2005-09-16)
      Mate-finding behaviour in the marine copepod Centropages typicus was investigated by 3-dimensional video analysis. Females leave a chemical trail in their wake and a male intercepting a fresh trail initiates a characteristic ...
    • Blind dating—mate finding in planktonic copepods. II. The pheromone cloud of Pseudocalanus elongatus 

      Kiørboe, Thomas; Bagøien, Espen; Thygesen, Uffe Høgsbro (Journal article; Peer reviewed, 2005-09-16)
      Receptive females of Pseudocalanus elongatus, like many other planktonic copepods, produce pheromones to signal their presence and position to males, and thus enhance the rate of mate encounter. By means of 3D video ...
    • Blind dating—mate finding in planktonic copepods. III. Hydromechanical communication in Acartia tonsa 

      Bagøien, Espen; Kiørboe, Thomas (Journal article; Peer reviewed, 2005-09-16)
      Mate-finding behaviour in the marine copepod Acartia tonsa was examined by video analysis. A. tonsa appears to depend on hydromechanical signals in the location of mates, detected at distances of up to 5 or 7 mm. Series ...
    • Can predator avoidance explain varying overwintering depth of Calanus in different oceanic water masses? 

      Dale, Trine; Bagøien, Espen; Melle, Webjørn; Kaartvedt, Stein (Journal article; Peer reviewed, 1999-04-15)
      Distributions of overwintering Calanus spp. in the upper 1000 m in the Norwegian and Greenland Seas were studied in relation to hydrography, invertebrate predators and acoustic scattering layers (38 kHz). C, finmarchicus ...
    • 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 ...
    • 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 ...
    • Seasonal plankton dynamics along a cross-shelf gradient 

      Stenseth, Nils Christian; Llope, Marcos; Anadón, Ricardo; Ciannelli, Lorenzo; Chan, Kung-Sik; Hjermann, Dag Ø.; Bagøien, Espen; Ottersen, Geir (Journal article; Peer reviewed, 2006-08-08)
      Much interest has recently been devoted to reconstructing the dynamic structure of ecological systems on the basis of time-series data. Using 10 years of monthly data on phyto- and zooplankton abundance from the Bay of ...
    • 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. ...
    • 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 ...