• Egg buoyancy variability in local populations of Atlantic cod (Gadus morhua) 

      Jung, Kyung-Mi; Folkvord, Arild; Kjesbu, Olav Sigurd; Agnalt, Ann Lisbeth; Thorsen, Anders; Sundby, Svein (Peer reviewed; Journal article, 2012)
      Previous studies have found strong evidences for Atlantic cod (Gadus morhua) egg retention in fjords, which are caused by the combination of vertical salinity structure, estuarine circulation, and egg specific gravity, ...
    • Experimental parameterisation of principal physics in buoyancy variations of marine teleost eggs 

      Jung, Kyung Mi; Folkvord, Arild; Kjesbu, Olav Sigurd; Sundby, Svein (Peer reviewed; Journal article, 2014-08-14)
      It is generally accepted that the high buoyancy of pelagic marine eggs is due to substantial influx of water across the cell membrane just before ovulation. Here we further develop the theoretical basis by applying laboratory ...
    • Long-Term Statistics of Observed Bubble Depth Versus Modeled Wave Dissipation 

      Strand, Kjersti Opstad; Breivik, Øyvind; Pedersen, Geir; Vikebø, Frode Bendiksen; Sundby, Svein; Christensen, Kai Håkon (Journal article; Peer reviewed, 2020)
      Air bubble penetration depths are investigated with a bottom‐mounted echosounder at a seabed observatory in northern Norway. We compare a 1‐year time series of observed bubble depth against modeled and estimated turbulent ...
    • The Northeast Greenland shelf as a potential habitat for the Northeast Arctic cod 

      Strand, Kjersti Opstad; Sundby, Svein; Albretsen, Jon; Vikebø, Frode Bendiksen (Peer reviewed; Journal article, 2017-09-26)
      Observations (1978–1991) of distributions of pelagic juvenile Northeast Arctic cod (Gadus morhua L.) show that up to 1/3 of the year class are dispersed off the continental shelf and into the deep Norwegian Sea while on ...
    • Retention of Coastal Cod Eggs in a Fjord Caused by Interactions between Egg Buoyancy and Circulation Pattern 

      Myksvoll, Mari Skuggedal; Sundby, Svein; Ådlandsvik, Bjørn; Vikebø, Frode B. (Peer reviewed; Journal article, 2011-08-01)
      Norwegian coastal cod form a stationary population of Atlantic cod Gadus morhua consisting of several genetically separated subpopulations. A small-scale differentiation in marine populations with pelagic eggs and larvae ...
    • Spatial dynamics of the bearded goby and its key fish predators off Namibia vary with climate and oxygen availability 

      Salvanes, Anne Gro Vea; Bartholomae, Chris H.; Yemane, Dawit; Gibbons, Mark J.; Kainge, Paul; Krakstad, Jens-Otto; Roault, Mathieu; Staby, Arved; Sundby, Svein (Peer reviewed; Journal article, 2015-03)
      Hypoxia [O2 < 2.0 mL L−1 (87 μmol kg−1)] and severely hypoxic water masses [O2 < 0.5 mL L−1 (21.8 μmol kg−1)] are increasing in coastal marine ecosystems due to eutrophication and warming. Here, we investigate the response ...
    • 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 (Journal article; Peer reviewed, 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 ...
    • Sub-surface maxima in buoyant fish eggs indicate vertical velocity shear and spatially limited spawning grounds 

      Strand, Kjersti Opstad; Vikebø, Frode; Sundby, Svein; Sperrevik, Ann Kristin (Peer reviewed; Journal article, 2018)
      Observed vertical profiles of buoyant particles, in this case pelagic Northeast Arctic cod eggs, occasionally deviate from the vertical diffusion-buoyancy balance by displaying sub-surface maxima. Here we present a mechanism ...
    • Subsurface maxima in buoyant fish eggs indicate vertical velocity shearand spatially limited spawning grounds 

      Strand, Kjersti Opstad; Vikebø, Frode Bendiksen; Sundby, Svein; Sperrevik, Ann Kristin; Breivik, Øyvind (Peer reviewed; Journal article, 2019-05)
      Observed vertical profiles of buoyant particles, in this case pelagic Northeast Arctic (NEA) cod eggs, occasionally deviate from the vertical diffusion‐buoyancy balance by displaying subsurface maxima. Here, we present a ...
    • Wind Intensity Is Key to Phytoplankton Spring Bloom Under Climate Change 

      Vikebø, Frode Bendiksen; Strand, Kjersti Opstad; Sundby, Svein (Peer reviewed; Journal article, 2019-08-30)
      The onset of the spring bloom (OSB) occurs when phytoplankton growth exceeds losses and is promoted by a transition from deep convection to a shallow mixing layer concurrent with increasing light intensities in nutrient-enriched ...