Now showing items 21-40 of 1203

    • Replicated marine protected areas (MPAs) support movement of larger, but not more, European lobsters to neighbouring fished areas 

      Thorbjørnsen, Susanna Huneide; Moland, Even; Huserbråten, Mats Brockstedt Olsen; Knutsen, Jan Atle; Knutsen, Halvor; Olsen, Esben Moland (Journal article; Peer reviewed, 2018)
      The European lobster Homarus gammarus is heavily exploited in the Norwegian fishery, and several management actions have been implemented to protect the species. Three marine protected areas (MPAs) excluding all but hook ...
    • The chemical composition of two seaweed flies (Coelopa frigida and Coelopa pilipes) reared in the laboratory 

      Biancarosa, Irene; Liland, Nina Sylvia; Day, Nicola; Belghit, Ikram; Amlund, Heidi; Lock, Erik-Jan; Gilburn, Andre S. (Journal article; Peer reviewed, 2018)
      Two species of seaweed flies, Coelopa frigida and Coelopa pilipes, were reared in the laboratory and their larvae were sampled for composition of amino acids, fatty acids and elements. The larvae were grown on two different ...
    • Density regulation in Northeast Atlantic fish populations: Density dependence is stronger in recruitment than in somatic growth 

      Zimmermann, Fabian; Ricard, Daniel; Heino, Mikko Petteri (Journal article; Peer reviewed, 2018)
    • Long-term variation in numbers and biomass of silver eels being produced in two European river systems 

      Poole, W. Russell; Diserud, Ola Håvard; Thorstad, Eva Bonsak; Durif, Caroline; Dolan, Conor; Sandlund, Odd Terje; Bergesen, Knut Aanestad; Rogan, Gerard; Kelly, Sean D.; Vøllestad, Leif Asbjørn (Journal article; Peer reviewed, 2018)
      The European eel (Anguilla anguilla) population has been in decline at least since the 1960s and reliable regional information, particularly on the spawner production and escapement (i.e. the silver eel life stage), is a ...
    • Mineral nutrition and bone health in salmonids 

      Bæverfjord, Grete; Prabhu, P. Antony Jesu; Fjelldal, Per Gunnar; Albrektsen, Sissel; Hatlen, Bjarne; Denstadli, Vegard; Ytteborg, Elisabeth; Takle, Harald Rune; Lock, Erik-Jan; Berntssen, Marc; Lundebye, Anne-Katrine; Åsgård, Torbjørn Einar; Waagbø, Rune (Journal article; Peer reviewed, 2018)
      In the recent years, challenges faced in salmonid farming with regard to deformities have helped to improve our knowledge on skeletal biology and development of bone health in salmonids. Different nutritional, genetic and ...
    • Tracing simultaneous cadmium accumulation from different uptake routes in brown crab Cancer pagurus by the use of stable isotopes 

      Wiech, Martin; Amlund, Heidi; Jensen, Karl Andreas; Aldenberg, Tom; Duinker, Arne; Måge, Amund (Journal article; Peer reviewed, 2018)
      High concentrations of cadmium in brown crab are an issue of food safety, and large variations between different areas have been found. To investigate the relative importance of dietary and aqueous uptake regarding the ...
    • Harvesting changes mating behaviour in European lobster 

      Sørdalen, Tonje Knutsen; Halvorsen, Kim Aleksander Tallaksen; Harrison, Hugo B.; Ellis, Charlie D.; Vøllestad, Leif Asbjørn; Knutsen, Halvor; Moland, Even; Olsen, Esben Moland (Journal article; Peer reviewed, 2018)
      Removing individuals from a wild population can affect the availability of prospective mates and the outcome of competitive interactions, with subsequent effects on mating patterns and sexual selection. Consequently, the ...
    • Growth of wild and domesticated Atlantic cod Gadus morhua reared under semi-commercial conditions 

      Otterå, Håkon Magne; Heino, Mikko; Sørvik, Anne Grete Eide; Svåsand, Terje; Karlsen, Ørjan; Thorsen, Anders; Glover, Kevin (Journal article; Peer reviewed, 2018)
      Genetic interactions between farmed escapees and wild fish represent a challenge to environmentally sustainable aquaculture. Breeding programs for Atlantic cod Gadus morhua have been initiated; however, the genetic response ...
    • Genetic management of mixed-stock fisheries "real-time": The case of the largest remaining cod fishery operating in the Atlantic in 2007-2017 

      Dahle, Geir; Johansen, Torild; Westgaard, Jon-Ivar; Aglen, Asgeir; Glover, Kevin (Journal article; Peer reviewed, 2018)
      Fish stocks represent fundamental units in fisheries management, and their identification, especially in mixed-fisheries, represents one of the primary challenges to sustainable harvest. Here, we describe the first “real-time” ...
    • 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 ...
    • Judging a salmon by its spots: Environmental variation is the primary determinant of spot patterns in Salmo salar 

      Jørgensen, Katarina Mariann; Solberg, Monica Favnebøe; Besnier, Francois; Thorsen, Anders; Fjelldal, Per Gunnar; Skaala, Øystein; Malde, Ketil; Glover, Kevin (Journal article; Peer reviewed, 2018)
      In fish, morphological colour changes occur from variations in pigment concentrations and in the morphology, density, and distribution of chromatophores in the skin. However, the underlying mechanisms remain unresolved in ...
    • Prevalence of piscine orthoreovirus and salmonid alphavirus in sea-caught returning adult Atlantic salmon (Salmo salar L.) in northern Norway 

      Madhun, Abdullah Sami; Isachsen, Cecilie Helen; Omdal Strandenes, Linn Maren; Einen, Ann Cathrine B.; Mæhle, Stig; Wennevik, Vidar; Niemelä, Eero; Svåsand, Terje; Karlsbakk, Egil (Journal article; Peer reviewed, 2018)
      Heart and skeletal muscle inflammation (HSMI) caused by piscine orthoreovirus (PRV) and pancreas disease (PD) caused by salmonid alphavirus (SAV) are among the most prevalent viral diseases of Atlantic salmon farmed in ...
    • An assessment of ten ocean reanalyses in the polar regions 

      Uotila, Petteri; Goosse, Hugues; Haines, Keith; Chevallier, Matthieu; Barthélemy, Antoine; Bricaud, Clément; Carton, Jim; Fučkar, Neven; Garric, Gilles; Iovino, Doroteaciro; Kauker, Frank; Korhonen, Meri; Lien, Vidar Surén; Marnela, Marika; Massonnet, François; Mignac, Davi; Peterson, K. Andrew; Sadikn, Remon; Shi, Li; Tietsche, Steffen; Toyoda, Takahiro; Xie, Jiping; Zhang, Zhaoru (Journal article; Peer reviewed, 2018)
      Global and regional ocean and sea ice reanalysis products (ORAs) are increasingly used in polar research, but their quality remains to be systematically assessed. To address this, the Polar ORA Intercomparison Project ...
    • Collecting size-selectivity data for Antarctic krill (Euphausia superba) with a trawl independent towing rig 

      Krag, Ludvig Ahm; Krafft, Bjørn Arne; Engås, Arill; Herrmann, Bent (Peer reviewed; Journal article, 2018)
      For the development of efficient trawls to minimize catch loss, escape mortality and potential negative ecosystem impacts from the fishery, the understanding about trawl selectivity processes are crucial. Small crustaceans ...
    • Mineral nutrition and bone health in salmonids 

      Bæverfjord, Grete; Prabhu, P. Antony Jesu; Fjelldal, Per Gunnar; Albrektsen, Sissel; Hatlen, Bjarne; Denstadli, Vegard; Ytteborg, Elisabeth; Takle, Harald Rune; Lock, Erik-Jan; Berntssen, Marc; Lundebye, Anne-Katrine; Åsgård, Torbjørn Einar; Waagbø, Rune (Journal article; Peer reviewed, 2018)
      In the recent years, challenges faced in salmonid farming with regard to deformities have helped to improve our knowledge on skeletal biology and development of bone health in salmonids. Different nutritional, genetic and ...
    • CO2 flux over young and snow-covered Arctic pack ice in winter and spring 

      Nomura, Daiki; Granskog, Mats A.; Fransson, Agneta; Chierici, Melissa; Silyakova, Anna; Ohshima, Kay; Cohen, Lana; Delille, Bruno; Hudson, Stephen R.; Dieckmann, Gerhard (Journal article; Peer reviewed, 2018)
      Rare CO2 flux measurements from Arctic pack ice show that two types of ice contribute to the release of CO2 from the ice to the atmosphere during winter and spring: young, thin ice with a thin layer of snow and older ...
    • Seasonality of the Physical and Biogeochemical Hydrography in the Inflow to the Arctic Ocean Through Fram Strait 

      Randelhoff, Achim; Reigstad, Marit; Chierici, Melissa; Sundfjord, Arild; Ivanov, Vladimir; Cape, Matthias; Vernet, Maria; Tremblay, Jean-Éric; Bratbak, Gunnar; Kristiansen, Svein (Peer reviewed; Journal article, 2018)
    • Coincident mass occurrence of gelatinous zooplankton in Northern Norway 

      Knutsen, Tor; Hosia, Aino; Falkenhaug, Tone; Skern-Mauritzen, Rasmus; Wiebe, Peter H.; Larsen, Roger B.; Aglen, Asgeir; Berg, Erik (Peer reviewed; Journal article, 2018)
      In autumn 2015, several sources reported observations of large amounts of gelatinous material in a large north Norwegian fjord system, either caught when trawling for other organisms or fouling fishing gear. The responsible ...
    • Identification and characterisation of the ecdysone biosynthetic genes neverland, disembodied and shade in the salmon louse Lepeophtheirus salmonis (Copepoda, Caligidae) 

      Sandlund, Liv; Kongshaug, Heidi; Horsberg, Tor Einar; Male, Rune; Nilsen, Frank; Dalvin, Sussie (Peer reviewed; Journal article, 2018)
    • Environmental benefits of leaving offshore infrastructure in the ocean 

      Fowler, Ashley M.; Jørgensen, Anne-Mette; Svendsen, Jon C.; Macreadie, Peter I.; Jones, Daniel O.B.; Boon, Arjen R.; Booth, David J.; Brabant, Robin; Callahan, Emily; Claisse, Jeremy T.; Dahlgren, Thomas G.; Degraer, Steven; Dokken, Quenton R.; Gill, Andrew B.; Johns, David G.; Leewis, Robert J.; Lindeboom, Han J.; Linden, Olof; May, Roelof Frans; Murk, Albertinka J.; Ottersen, Geir; Schroeder, Donna M.; Shastri, Sunil M.; Teilmann, Jonas; Todd, Victoria; Hoey, Gert Van; Vanaverbeke, Jan; Coolen, Joop W.P. (Peer reviewed; Journal article, 2018)
      The removal of thousands of structures associated with oil and gas development from the world’s oceans is well underway, yet the environmental impacts of this decommissioning practice remain unknown. Similar impacts will ...