Blar i Articles på forfatter "Ådlandsvik, Bjørn"

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    • Barents Sea plankton production and controlling factors in a fluctuating climate 

      Sandø, Anne Britt; Mousing, Erik Askov; Budgell, W.P.; Hjøllo, Solfrid S; Skogen, Morten D; Ådlandsvik, Bjørn (Peer reviewed; Journal article, 2021)
      The Barents Sea and its marine ecosystem is exposed to many different processes related to the seasonal light variability, formation and melting of sea-ice, wind-induced mixing, and exchange of heat and nutrients with ...

    • Descent and mixing of the overflow plume from Storfjord in Svalbard: an idealized numerical model study 

      Fer, Ilker; Ådlandsvik, Bjørn (Journal article; Peer reviewed, 2008)
      Storfjorden in the Svalbard Archipelago is a sill-fjord that produces significant volumes of dense, brine-enriched shelf water through ice formation. The dense water produced in the fjord overflows the sill and can reach ...

    • The development of a sustainability assessment indicator and its response to management changes as derived from salmon lice dispersal modelling 

      Sandvik, Anne Dagrun; Bui, Samantha; Huserbråten, Mats Brockstedt Olsen; Karlsen, Ørjan; Myksvoll, Mari Skuggedal; Ådlandsvik, Bjørn; Johnsen, Ingrid Askeland (Peer reviewed; Journal article, 2021)
      Aquaculture is providing an increasingly larger proportion of the world’s protein for human consumption; however, its environmental impact is a bottleneck for sustainable expansion. In Norway, the government has enacted a ...

    • Evaluation of a national operational salmon lice monitoring system - from physics to fish 

      Myksvoll, Mari Skuggedal; Sandvik, Anne Dagrun; Albretsen, Jon; Asplin, Lars; Johnsen, Ingrid Askeland; Karlsen, Ørjan; Kristensen, Nils Melsom; Melsom, Arne; Skardhamar, Jofrid; Ådlandsvik, Bjørn (Journal article; Peer reviewed, 2018)
      The Norwegian government has decided that the aquaculture industry shall grow, provided that the growth is environmentally sustainable. Sustainability is scored based on the mortality of wild salmonids caused by the parasitic ...

    • Flytter torsken? 

      Stiansen, Jan Erik; Johansen, Geir Odd; Kvamme, Cecilie; Mehl, Sigbjørn; Ådlandsvik, Bjørn; Hannesson, Rögnvaldur; Ekerhovd, Nils Arne (Journal article, 2009-10)

    • The lunar compass of European glass eels (Anguilla anguilla) increases the probability that they recruit to North Sea coasts 

      Cresci, Alessandro; Sandvik, Anne Dagrun; Sævik, Pål Næverlid; Ådlandsvik, Bjørn; Olascoaga, Maria Josefina; Miron, Philippe; Durif, Caroline; Skiftesvik, Anne Berit; Browman, Howard; Vikebø, Frode Bendiksen (Peer reviewed; Journal article, 2020)
      The European eel hatches in the Sargasso Sea and migrates across the Atlantic Ocean toward Europe. At the continental shelf, larvae metamorphose into glass eels and then recruit to coastal habitats and estuaries. Among ...

    • Modelled salmon lice dispersion and infestation patterns in a sub-arctic fjord 

      Skardhamar, Jofrid; Albretsen, Jon; Sandvik, Anne Dagrun; Lien, Vidar Surén; Myksvoll, Mari Skuggedal; Johnsen, Ingrid Askeland; Asplin, Lars; Ådlandsvik, Bjørn; Halttunen, Elina; Bjørn, Pål Arne (Journal article; Peer reviewed, 2018)
      Salmon lice infestation is a major challenge for the aquaculture industry in Norway, threatening wild salmonid populations and causing welfare problems for farmed salmon. Lice dispersion and infestation patterns are simulated ...

    • OpenDrift v1.0: A generic framework for trajectory modelling 

      Dagestad, Knut-Frode; Röhrs, Johannes; Breivik, Øyvind; Ådlandsvik, Bjørn (Journal article; Peer reviewed, 2018)
      OpenDrift is an open-source Python-based framework for Lagrangian particle modelling under development at the Norwegian Meteorological Institute with contributions from the wider scientific community. The framework is ...

    • Real-Time Ichthyoplankton Drift in Northeast Arctic Cod and Norwegian Spring-Spawning Herring 

      Vikebø, Frode; Ådlandsvik, Bjørn; Albretsen, Jon; Sundby, Svein; Stenevik, Erling Kåre; Huse, Geir; Svendsen, Einar; Kristiansen, Trond; Eriksen, Elena (Journal article; Peer reviewed, 2011-11-16)
      Background: Individual-based biophysical larval models, initialized and parameterized by observations, enable numerical investigations of various factors regulating survival of young fish until they recruit into the adult ...

    • Reconstructing the stock–recruit relationship for Northeast Arctic cod using a bioenergetic index of reproductive potential 

      Marshall, C. Tara; Yaragina, Natalia A.; Ådlandsvik, Bjørn; Dolgov, Andrey V. (Journal article; Peer reviewed, 2000)
      Correlation and simulation analyses suggest that, for the Northeast Arctic (NA) cod stock, the total lipid energy (TLE (kJ)) contained in the livers of mature females is proportional to total egg production, making TLE a ...

    • 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 (Journal article; Peer reviewed, 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 ...

    • Salmon lice-induced mortality of Atlantic salmon during post-smolt migration in Norway 

      Johnsen, Ingrid Askeland; Harvey, Alison C.; Sævik, Pål Næverlid; Sandvik, Anne Dagrun; Ugedal, Ola; Ådlandsvik, Bjørn; Wennevik, Vidar; Glover, Kevin; Karlsen, Ørjan (Peer reviewed; Journal article, 2020)

    • Simulating vertical turbulent dispersal with finite volumes and binned random walks 

      Høgsbro Thygesen, Uffe; Ådlandsvik, Bjørn (Journal article; Peer reviewed, 2007-10-11)
      Early life stages in fish are often modeled by individual-based models. The transport of individuals with ocean currents is addressed through particle-tracking techniques, which typically simulate vertical turbulent ...

    • Toward a model-based prediction system for salmon lice infestation pressure 

      Sandvik, Anne Dagrun; Bjørn, Pål Arne; Ådlandsvik, Bjørn; Asplin, Lars; Skardhamar, Jofrid; Johnsen, Ingrid Askeland; Myksvoll, Mari Skuggedal; Skogen, Morten D. (Journal article; Peer reviewed, 2016-09-08)
      High salmon lice density is a threat to wild and farmed salmonid fish in Norway. To assess and identify areas for high salmon lice infestation pressure, continuous monitoring is necessary. The national Norwegian salmon ...