• Kunnskapsstatus - miljøeffekter av norsk fiskeoppdrett 2019 : Risikorapport norsk fiskeoppdrett, del 2 

  Grefsrud, Ellen Sofie; Svåsand, Terje; Glover, Kevin; Husa, Vivian; Hansen, Pia Kupka; Samuelsen, Ole Bent; Sandlund, Nina; Stien, Lars Helge (Fisken og havet;2020 - 6, Research report, 2020)

  Havforskningsinstituttet har siden 2011 gitt ut en årlig rapport for risikovurdering av miljøeffekter knyttet til norsk fiskeoppdrett. Frem til 2018 var risikorapporten både risikovurdering og kunnskapsstatus i ett. For å ...

• Mind the depth: The vertical dimension of a small-scale coastal fishery shapes selection on species, size, and sex in wrasses 

  Halvorsen, Kim Aleksander Tallaksen; Sørdalen, Tonje Knutsen; Larsen, Torkel; Browman, Howard; Rafoss, Trond; Albretsen, Jon; Skiftesvik, Anne Berit (Peer reviewed; Journal article, 2020)

  Small‐scale fisheries (SSFs) tend to target shallow waters, but the depth distributions of coastal fish can vary depending on species, size, and sex. This creates a scope for a form of fishing selectivity that has received ...

• Risikorapport norsk fiskeoppdrett 2020 : Risiko knyttet til dødelighet hos utvandrende postsmolt laks som følge av utslipp av lakselus fra fiskeoppdrett 

  Grefsrud, Ellen Sofie; Karlsen, Ørjan; Svåsand, Terje (Fisken og havet;2020 - 4, Research report, 2020)

  Havforskningsinstituttet har siden 2011 gitt ut en årlig risikorapport for norsk fiskeoppdrett med fokus på miljøeffekter og dyrevelferd. Arbeidet med rapporten har vist at akvakultur har et svært komplekst risikobilde, ...

• Getz Ice Shelf melt enhanced by freshwater discharge from beneath the West Antarctic Ice Sheet 

  Wei, Wei; Blankenship, Donald D.; Greenbaum, Jamin S.; Gourmelen, Noel; Dow, Christine F.; Richter, Thomas G.; Greene, Chad A.; Young, Duncan A.; Lee, SangHoon; Kim, Tae-Wan; Lee, Won Sang; Assmann, Karen Margarete (Peer reviewed; Journal article, 2020)

  Antarctica's Getz Ice Shelf has been rapidly thinning in recent years, producing more meltwater than any other ice shelf in the world. The influx of fresh water is known to substantially influence ocean circulation and ...

• Skeletal deformities in wild and farmed cleaner fish species used in Atlantic salmon Salmo salar aquaculture 

  Fjelldal, Per Gunnar; Madaro, Angelico; Hvas, Malthe; Stien, Lars Helge; Oppedal, Frode; Fraser, Thomas (Peer reviewed; Journal article, 2020)

  As a first attempt to assess bone health in cleaner fish production, wild and cultured ballan wrasse Labrus bergylta and lumpfish Cyclopterus lumpus were examined by radiology. In C. lumpus, wild fish (57%) had more vertebra ...

• Mot en ny havnæring for tare? : Muligheter og utfordringer for dyrking av alger i Norge 

  Norderhaug, Kjell Magnus; Skjermo, Jorunn; Kolstad, Kari; Broch, Ole Jacob; Ergon, Åshild; Handå, Aleksander; Horn, Svein Jarle; Lock, Erik-Jan; Øverland, Margareth (Fisken og havet;2020 - 5, Research report, 2020)

  Behovet for bærekraftig produksjon av mat fra havet har aktualisert dyrking av tang og tare. Selv om potensialet for dyrking er stort i Norge er produksjonen på prøvestadiet på grunn av utfordringer knyttet til marked, ...

• Amphipods and sea anemones, an update 

  Vader, Wim; Tandberg, Anne Helene Solberg (Peer reviewed; Journal article, 2020)

  We present an updated survey of the Amphipoda that live in association with sea anemones. These amphipods can be divided into four groups: 1) symbiotic amphipods using sea anemones mainly for protection, but feeding largely ...

• Large annual variation in the amount of skipped spawning for female Northeast Arctic haddock Melanogrammus aeglefinus 

  Skjæraasen, Jon Egil; Korsbrekke, Knut; Dingsør, Gjert Endre; Langangen, Øystein; Opdal, Anders Frugård; Jørgensen, Christian (Peer reviewed; Journal article, 2020)

  Although the phenomenon of skipped spawning has been described in numerous fishes, time-series are scarce. We used the presence of post-ovulatory follicles in histological gonad slides from females not developing oocytes ...

• Effects of laboratory salmon louse infection on osmoregulation, growth and survival in Atlantic salmon 

  Fjelldal, Per Gunnar; Hansen, Tom Johnny; Karlsen, Ørjan (Peer reviewed; Journal article, 2020)

  Anadromous Atlantic salmon (Salmo salar) rely on long ocean migrations to build energy stores for maturation and spawning. In seawater, wild Atlantic salmon are threatened by high salmon lice (Lepeophtheirus salmonis) ...

• 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 ...

• Diel vertical movements determine spatial interactions between cod, pelagic fish and krill on an Arctic shelf bank 

  Skaret, Georg; Johansen, Geir Odd; Johnsen, Espen; Fall, Johanna Jennifer Elisabeth; Fiksen, Øyvind; Englund, Gøran; Fauchald, Per; Gjøsæter, Harald; Macaulay, Gavin; Johannesen, Edda (Peer reviewed; Journal article, 2020)

  Predator-prey spatial interactions are essential to understand ecosystem processes like predation rates and trophic interaction strength. In marine systems, such spatial interactions are highly dynamic and difficult to ...

• Development stage distribution as a proxy for feeding success and growth for first feeding Norwegian spring spawning herring larvae 

  Stenevik, Erling Kåre; Nash, Richard David Marriott; Folkvord, Arild (Peer reviewed; Journal article, 2020)

  The estimation of growth rates in young herring larvae (Clupea harengus) in the field can be difficult because the primary increments in the otoliths may not be discernible or formed at a daily level. Likewise, the estimation ...

• Microbial communities associated with the parasitic copepod Lepeophtheirus salmonis. 

  Dalvin, Sussie; Skaftnesmo, Kai Ove; Malde, Ketil; Glover, Kevin; Leong, Jong S; Koop, Ben F.; Edvardsen, Rolf Brudvik; Sandlund, Nina (Peer reviewed; Journal article, 2019)

  Lepeophtheirus salmonis is a naturally occurring marine parasite of salmonid fishes in the Northern hemisphere, and a major problem in salmonid aquaculture. In addition to the direct effects on host fish, L. salmonis may ...

• Arctic continental slopes sharp gradients of physical processes affect pelagic and benthic ecosystems. 

  Bluhm, Bodil; Janout, Markus; Danielson, Seth L.; Ellingsen, Ingrid H.; Gavrilo, Maria; Grebmeier, Jaqueline; Hopcroft, Russell R.; Iken, Katrin; Ingvaldsen, Randi Brunvær; Jørgensen, Lis Lindal; Kosobokova, Ksenia N.; Kwok, Ron; Polyakov, Igor V.; Renaud, Paul E.; Carmack, Eddy C. (Peer reviewed; Journal article, 2020)

  Continental slopes – steep regions between the shelf break and abyssal ocean – play key roles in the climatology and ecology of the Arctic Ocean. Here, through review and synthesis, we find that the narrow slope regions ...

• Borealization of the Arctic Ocean in response to anomalous advection from sub-Arctic seas. 

  Polyakov, Igor V.; Alkire, Mattew; Bluhm, Bodil; Brown, Kristina; Carmack, Eddy C.; Chierici, Melissa; Danielson, Seth L.; Ellingsen, Ingrid H.; Ershova, Elizaveta; Gardfeldt, Katrin; Ingvaldsen, Randi Brunvær; Pnyushkov, Andrey V.; Slagstad, Dag; Wassmann, Paul (Peer reviewed; Journal article, 2020)

  An important yet still not well documented aspect of recent changes in the Arctic Ocean is associated with the advection of anomalous sub-Arctic Atlantic- and Pacific-origin waters and biota into the polar basins, a process ...

• Harp seal body condition and trophic interactions with prey in Norwegian high Arctic waters in early autumn 

  Haug, Tore; Biuw, Martin; Gjøsæter, Harald; Knutsen, Tor; Lindstrøm, Ulf; MacKanzie, Kirsteen M.; Meier, Sonnich; Nilssen, Kjell Tormod (Peer reviewed; Journal article, 2020)

  In September 2016, a marine ecosystem survey covered all trophic levels from phytoplankton to seals in the Arctic Ocean to the west and north of Svalbard. At the ice edge, 26 harp seals were sampled to assess whether recent ...

• Computational animal welfare: Towards cognitive architecture models of animal sentience, emotion and wellbeing 

  Budaev, Sergei; Kristiansen, Tore S; Giske, Jarl; Eliassen, Sigrunn (Peer reviewed; Journal article, 2020)

  To understand animal wellbeing, we need to consider subjective phenomena and sentience. This is challenging, since these properties are private and cannot be observed directly. Certain motivations, emotions and related ...

• From sea surface to seafloor: A benthic allochthonous eDNA survey for the abyssal ocean 

  Laroche, Olivier; Kersten, Oliver; Smith, Craig R.; Goetze, Erica (Peer reviewed; Journal article, 2020)

  Environmental DNA (eDNA) metabarcoding could facilitate rapid and comprehensive biotic surveys in the deep ocean, yet many aspects of the sources and distribution of eDNA in the deep sea are still poorly understood. In ...

• Applying global best practices for estimating unreported catches in Norwegian fisheries under a discard ban 

  Clegg, Thomas L; Kennelly, Steven J.; Blom, Geir; Nedreaas, Kjell Harald (Peer reviewed; Journal article, 2020)

  In addition to their role as a fisheries management tool, discard bans can be effective in improving knowledge of total catches via the requirement to land and report all catches. This shifts the focus to understanding the ...

• 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. ...

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