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    • Viral Haemorrhagic Septicemia Virus (VHSV) Isolated from Atlantic Herring, Clupea harengus, Causes Mortality in Bath Challenge on Juvenile Herring 

      Bergh, Øivind; Boutrup, Torsten Snogdal; Johansen, Renate; Skall, Helle Frank; Sandlund, Nina; Olesen, Niels Jørgen (Peer reviewed; Journal article, 2023)
      Viral hemorrhagic septicaemia virus (VHSV) has been demonstrated to cause high mortalities in a wide range of teleosts, farmed as well as wild. In Europe, VHSV of genotypes Ib, Id, II, and III have been detected in wild ...

    • Visual predation by the euphausiid Meganyctiphanes norvegica 

      Torgersen, Thomas (Journal article; Peer reviewed, 2001-01-05)
      Experiments showed that Meganyctiphanes norvegica are visual predators on copepods. Adult M. norvegica were offered a mixture of equal numbers of late stage Calanus spp. and Metridia longa in total darkness and at a light ...

    • Visual predation risk and spatial distributions of large Arctic copepods along gradients of sea ice and bottom depth 

      Langbehn, Tom; Aarflot, Johanna Myrseth; Freer, Jennifer J.; Varpe, Øystein (Peer reviewed; Journal article, 2023)
      Changes in the community size structure of Arctic copepods toward smaller and less fat individuals or species have been linked to environmental changes. The underpinning mechanisms are, however, poorly understood. We use ...

    • Vitality as a measure of animal welfare during purse seine pumping related crowding of Atlantic mackerel (Scomber scrombrus) 

      Anders, Neil; Hannaas, Sigurd; Saltskår, Jostein; Schuster, Erik; Tenningen, Maria; Totland, Bjørn; Vold, Aud; Øvredal, Jan Tore; Breen, Michael (Peer reviewed; Journal article, 2022)
      The impacts of wild capture fishing on animal welfare are poorly understood. During purse seine fishing for Atlantic mackerel (Scomber scrombrus), catches are crowded to high densities to facilitate pumping onboard. This ...

    • Vitamin B12 and folate status in pregnant females and their infants in Norway: Secondary analysis from the Mommy´s Food Study 

      Bjørkevoll, Sol Maja Graasvold; Konijnenberg, Carolien; Kvestad, Ingrid Hafting; McCann, Adrian; Ueland, Per Magne; Næss, Synnøve; Dahl, Lisbeth; Kjellevold, Marian; Strand, Tor Arne; Markhus, Maria Wik (Peer reviewed; Journal article, 2023)
      Background: Vitamin B12 and folate are essential micronutrients important for normal infant growth and development. Objectives: The aims were to describe vitamin B12 and folate status in pregnant females and their infants ...

    • Vitamin D status and physical activity during wintertime in forensic inpatients—a randomized clinical trial 

      Hansen, Anita Lill; Ambroziak, Gina; Thornton, David M.; Mundt, James C.; Kahn, Rachel E.; Dahl, Lisbeth; Waage, Leif; Kattenbraker, Daniel; Grung, Bjørn (Peer reviewed; Journal article, 2021)
      This study aimed to gain deeper knowledge about the relationship between vitamin D and physical activity in a sample of forensic inpatients. Sixty-seven male forensic inpatients participated. Participants were randomly ...

    • Vitamin D supplementation during winter: Effects on stress resilience in a randomized control trial 

      Hansen, Anita Lill; Ambroziak, Gina; Thornton, David; Mundt, James C.; Kahn, Rachel E.; Dahl, Lisbeth; Waage, Leif; Kattenbraker, Daniel; Araujo, Pedro; Murison, Robert; Rypdal, Knut; Grung, Bjørn (Peer reviewed; Journal article, 2020)
      Vitamin D status may be important for stress resilience. This study investigated the effects of vitamin D supplements during winter on biological markers of stress resilience such as psychophysiological activity, serotonin, ...

    • Vitamin K (phylloquinone and menaquinones) in foods – Cost-effective quantification by LC-ESI-MS/MS 

      Jensen, Marie Bagge; Rød, Kari Elin Langeland; Švarc, Petra Ložnjak; Oveland, Eystein; Jakobsen, Jette Halkjær (Peer reviewed; Journal article, 2022)
      Further research on vitamin K is necessary as growing evidence of vitamin K’s importance in human health beyond blood coagulation and bone health is emerging. We present a cost-effective LC-ESI-MS/MS method for quantification ...

    • A volumetric census of the Barents Sea in a changing climate 

      Watelet, Sylvain; Skagseth, Øystein; Lien, Vidar Surén; Sagen, Helge; Østensen, Øivind; Ivshin, Victor; Beckers, Jean-Marie (Peer reviewed; Journal article, 2020)
      The Barents Sea, located between the Norwegian Sea and the Arctic Ocean, is one of the main pathways of the Atlantic Meridional Overturning Circulation. Changes in the water mass transformations in the Barents Sea potentially ...

    • Vulnerable marine ecosystems (VMEs) Coral and sponge VMEs in Arctic and sub-Arctic waters – Distribution and threats 

      Buhl-Mortensen, Lene; Burgos, Julian M.; Steingrund, Petur; Buhl-Mortensen, Pål; Olafsdottir, Steinunn Hilma; Ragnarsson, Stefan Aki (Journal article; Peer reviewed, 2019)
      This report presents results from the NovasArc project that has collated data on the distribution of vulnerable marine ecosystems (VMEs) in Arctic and sub-Arctic waters. Eleven VMEs were identified, based on management ...

    • Warm water treatment increased mortality risk in salmon 

      Bui, Samantha; Madaro, Angelico; Nilsson, Jonatan; Fjelldal, Per Gunnar; Iversen, Martin Haugmo; Brinchmann, Monica Fengsrud; Venås, Birger; Schrøder, Merete Bjørgan; Stien, Lars Helge (Peer reviewed; Journal article, 2022)
      Thermal treatment is a controversial method to control sea lice in the Atlantic salmon farming industry. This study aimed to complement the growing evidence base to document the impact of thermal treatments on salmon ...

    • A warmer environment can reduce sociability in an ectotherm 

      Pilakouta, Natalie; O'Donnell, Patrick J.; Crespel, Amélie; Levet, Marie; Claireaux, Marion; Humble, Joseph L.; Kristjánsson, Bjarni K.; Skúlason, Skúli; Lindström, Jan; Metcalfe, Neil B.; Killen, Shaun S.; Parsons, Kevin J. (Peer reviewed; Journal article, 2022)
      The costs and benefits of being social vary with environmental conditions, so individuals must weigh the balance between these trade-offs in response to changes in the environment. Temperature is a salient environmental ...

    • Warming Accelerates the Onset of the Molecular Stress Response and Increases Mortality of Larval Atlantic Cod 

      Oomen, Rebekah Alice; Knutsen, Halvor; Olsen, Esben Moland; Jentoft, Sissel; Stenseth, Nils Christian; Hutchings, Jeffrey (Peer reviewed; Journal article, 2022)
      Temperature profoundly affects ectotherm physiology. Although differential thermal responses influence fitness, thus driving population dynamics and species distributions, our understanding of the molecular architecture ...

    • Wasp-Waist Interactions in the North Sea Ecosystem 

      Fauchald, Per; Skov, Henrik; Skern-Mauritzen, Mette; Johns, David; Tveraa, Torkild (Journal article; Peer reviewed, 2011-07-28)
      Background In a “wasp-waist” ecosystem, an intermediate trophic level is expected to control the abundance of predators through a bottom-up interaction and the abundance of prey through a top-down interaction. Previous ...

    • Water quality and microbial community structure in juvenile Atlantic cod (Gadus morhua L.) cultures 

      van der Meeren, Terje; Brunvold, Laila; Sandaa, Ruth-Anne; Bergh, Øivind; Castberg, Tonje; Thyrhaug, Runar; Mangor-Jensen, Anders (Journal article; Peer reviewed, 2011-06)
      The effect of water treatment and flow rate on young Atlantic cod juveniles was investigated in a 36-days experiment. Four different flow rates (10, 20, 40, and 70 times the effective tank volume per day) were set up in ...

    • Water temperature and dietary histidine affect cataract formation in Atlantic salmon (Salmo salar L.) diploid and triploid yearling smolt 

      Sambraus, Florian; Fjelldal, Per Gunnar; Remø, Sofie C.; Hevrøy, Ernst Morten; Nilsen, Tom Ole; Thorsen, Anders; Hansen, Tom Johnny; Waagbø, Rune (Peer reviewed; Journal article, 2017)

    • Water type quantification in the Skagerrak, the Kattegat and off the Jutland west coast 

      Kristiansen, Trond; Aas, Eyvind (Journal article; Peer reviewed, 2014-12-06)
      An extensive data series of salinity, nutrients and coloured dissolved organic material (CDOM) was collected in the Skagerrak, the northern part of the Kattegat and off the Jutland west coast in April each year during the ...

    • Weak seasonality in benthic food web structure within an Arctic inflow shelf region 

      Ziegler, Amanda; Bluhm, Bodil; Renaud, Paul Eric; Jørgensen, Lis Lindal (Peer reviewed; Journal article, 2023)
      The Arctic Ocean is characterized by pronounced seasonality in the quantity and quality of organic matter exported from the surface ocean. While it is well established that changes in food availability can alter the ...

    • Weak seasonality in benthic food web structure within an Arctic inflow shelf region 

      Ziegler, Amanda; Bluhm, Bodil Annikki Ulla Barbro; Renaud, Paul Eric; Jørgensen, Lis Lindal (Peer reviewed; Journal article, 2023)
      The Arctic Ocean is characterized by pronounced seasonality in the quantity and quality of organic matter exported from the surface ocean. While it is well established that changes in food availability can alter the ...

    • Weakening of Cold Halocline Layer Exposes Sea Ice to Oceanic Heat in the Eastern Arctic Ocean 

      Polyakov, Igor V.; Rippeth, Tom; Fer, Ilker; Alkire, Matthew B.; Carmack, Eddy; Ingvaldsen, Randi Brunvær; Ivanov, Vladimir V.; Janout, Markus; Lind, Sigrid; Padman, Laurie; Pnyushkov, Andrey V.; Rember, Robert (Peer reviewed; Journal article, 2020)
      A 15-yr duration record of mooring observations from the eastern (>70°E) Eurasian Basin (EB) of the Arctic Ocean is used to show and quantify the recently increased oceanic heat flux from intermediate-depth (~150–900 m) ...