Recent Submissions

  • Fine-scale behavioural differences distinguish resource use by ecomorphs in a closed ecosystem 

    Hawley, Kate L.; Rosten, Carolyn M.; Christensen, Guttorm; Lucas, Martyn C. (Journal article; Peer reviewed, 2016)
    Temporal differences in habitat use and foraging specialisms between ecomorphs represent aspects of behavioural phenotype that are poorly understood with regard to the origin and maintenance of ecological diversity. We ...
  • Characterizing cytotoxic and estrogenic activity of Arctic char tissue extracts in primary Arctic char hepatocytes 

    Petersen, Karina; Hultman, Maria Thérése; Bytingsvik, Jenny; Harju, Mikael; Evenset, Anita; Tollefsen, Knut Erik (Journal article; Peer reviewed, 2017)
    Contaminants from various anthropogenic activities are detected in the Arctic due to long-range atmospheric transport, ocean currents, and living organisms such as migrating fish or seabirds. Although levels of persistent ...
  • Variations of Drinking Water Quality Influenced by Seasons and Household Interventions: A Case Study from Rural Maharashtra, India 

    Seifert-Dähnn, Isabel; Nesheim, Ingrid; Gosh, Sambita; Dhawde, Rutuja; Ghadge, Appasaheb; Wennberg, Aina Charlotte (Journal article; Peer reviewed, 2017)
    The majority of people in rural villages in Maharashtra, India, have access to improved drinking water sources. Nevertheless, the water quality at the point of consumption often does not satisfy the drinking water standard. ...
  • Emerging pollutants in the EU: 10 years of NORMAN in support of environmental policies and regulations 

    Dulio, Valeria; van Bavel, Bert; Broström-Lundén, Eva; Harmsen, Joop; Hollender, Juliane; Schalbach, Martin; Slobodnik, Jaroslav; Thomas, Kevin V; Koschorreck, Jan (Others, 2018)
    In 2005, the European Commission funded the NORMAN project to promote a permanent network of reference laboratories and research centers, including academia, industry, standardization bodies, and NGOs. Since then, NORMAN ...
  • Applying a New Ensemble Approach to Estimating Stock Status of Marine Fisheries around the World 

    Rosenberg, Andrew; Kleisner, Kristin M; Afflerbach, Jamie; Anderson, Sean C.; Dickey-Collas, Mark; Cooper, Andrew B.; Fogarty, Michael J.; Fulton, Elizabeth A.; Gutierrez, Nicolas L.; Hyde, Kimberly J.W.; Jardim, Ernesto; Jensen, Olaf P.; Kristiansen, Trond; Longo, Catherine; Minte-Vera, Carolina V.; Minto, Coilin; Mosqueira, Iago; Osio, Giacomo Chato; Ovando, Daniel; Selig, Elizabeth R; Thorson, James T.; Walsh, Jessica C.; Ye, Yimin (Journal article; Peer reviewed, 2018)
    The exploitation status of marine fisheries stocks worldwide is of critical importance for food security, ecosystem conservation, and fishery sustainability. Applying a suite of data-limited methods to global catch data, ...
  • Seasonal variation in marine C:N:P stoichiometry: can the composition of seston explain stable Redfield ratios? 

    Frigstad, Helene; Andersen, Tom; Hessen, Dag Olav; Naustvoll, L..J.; Johnsen, Torbjørn Martin; Bellerby, Richard (Journal article; Peer reviewed, 2011)
    Seston is suspended particulate organic matter, comprising a mixture of autotrophic, heterotrophic and detrital material. Despite variable proportions of these components, marine seston often exhibits relatively small ...
  • Tidal Energy Loss, Internal Tide Radiation, and Local Dissipation for Two-Layer Tidal Flow over a Sill 

    Arneborg, Lars; Jansson, Pær; Staalstrøm, Andre; Broström, Göran (Journal article; Peer reviewed, 2017)
    A simple analytical model for tidal energy loss at fjord sills and its partitioning into local dissipation and radiated internal tides is presented. The analytical model builds on a two-layer assumption with quasi-steady ...
  • Impact of an icy winter on the Pacific oyster (Crassostrea gigas Thunberg, 1793) populations in Scandinavia 

    Strand, Åsa; Blanda, Elisa; Bodvin, Torjan; Davids, Jens K.; Jensen, Lasse Fast; Holm-Hansen, Tore Hejl; Jelmert, Anders; Lindegarth, Susanne; Mortensen, Stein; Moy, Frithjof Emil; Nielsen, Pernille; Norling, Pia Carina; Nyberg, Carlo; Christensen, Helle Torp; Vismann, Bent; Holm, Mark Wejlemann; Hansen, Benni Winding; Dolmer, Per (Journal article; Peer reviewed, 2012)
    The Pacific oyster (Crassostrea gigas) is an invasive species that has dispersed into Scandinavia during the last few decades. The objective of this study was to evaluate the effects of extreme winter conditions on the ...
  • Overvåking av referanseelver 2017. Basisovervåking i henhold til vannforskriften 

    Moe, Therese Fosholt; Thrane, Jan-Erik; Bækkelie, Knut Andreas Eikland; Myrvold, Knut Marius; Olstad, Kjetil; Garmo, Øyvind Aaberg; Grung, Merete; de Wit, Heleen (NIVA-rapport;7259, Research report, 2018)
    Overvåking av referanseelver startet opp i 2017, og 47 antatte referansevannforekomster ble undersøkt. Vannforekomstene dekket alle økoregioner og mange ulike elvetyper, men det er knyttet relativt stor usikkerhet til en ...
  • Dual staining with CFDA-AM and SYTOX Blue in flow cytometry analysis of UV-irradiated Tetraselmis suecica to evaluate vitality 

    Olsen, Ranveig Ottøy; Hess-Erga, Ole-Kristian; Larsen, Aud; Hoffmann, Friederike; Thuestad, Gunnar; Hoell, Ingunn Alne (Journal article; Peer reviewed, 2016)
    After disinfection of ballast water, it is crucial to detect organisms and determine their vitality to assess the performance of the chosen treatment technique. Ultraviolet (UV) irradiation is a treatment technology commonly ...
  • Bigger is not better: cortisol-induced cardiac growth and dysfunction in salmonids 

    Johansen, Ida Beitnes; Sandblom, Erik; Skov, Peter V.; Gräns, Albin; Ekström, Andreas; Lunde, Ida Gjervold; Vindas, Marco Antonio; Zhang, Lili; Höglund, Erik; Frisk, Michael; Sjaastad, Ivar; Nilsson, Göran Erik; Øverli, Øyvind (Journal article; Peer reviewed, 2017)
    Stress and elevated cortisol levels are associated with pathological heart growth and cardiovascular disease in humans and other mammals. We recently established a link between heritable variation in post-stress cortisol ...
  • Effects of flow events and nutrient addition on stream periphyton and macroinvertebrates: an experimental study using flumes 

    Bækkelie, Knut Andreas E; Schneider, Susanne C; Hagman, Camilla H. C; Petrin, Zlatko (Journal article; Peer reviewed, 2017)
    We used flume experiments to study the effects of a temporary increase in stream flow on macroinvertebrates, leaf litter breakdown and soft-bodied benthic algae; both as a single stressor and eventually in combination with ...
  • Effect of ultrasonic cavitation on small and large organisms for water disinfection during fish transport 

    Svendsen, Eirik; Dahle, Stine Veronica Wiborg; Hagemann, Andreas; Birkevold, Jens; Delacroix, Stephanie; Andersen, Aage Bjørn (Journal article; Peer reviewed, 2018)
    Motivated by the need for additional tools to disinfect discharge water from well boats, and to prevent distribution of salmon lice, the effect of ultrasonic cavitation on the planktonic stages of the salmon louse, nauplii ...
  • Application of flow cytometry in ballast water analysis - biological aspects 

    Hoell, Ingunn; Olsen, Ranveig Ottøy; Hess-Erga, Ole-Kristian; Thuestad, Gunnar; Larsen, Aud (Journal article; Peer reviewed, 2017)
    Ballast water may, when discharged, cause the spread of nonindigenous and potentially invasive species. International ballast water treatment regulations have accelerated the development of new methods to detect, enumerate ...
  • Overvåking av referanseelver 2017. Basisovervåking i henhold til vannforskriften 

    Moe, Therese Fosholt; Thrane, Jan-Erik; Persson, Jonas; Bækkelie, Knut Andreas Eikland; Myrvold, Knut Marius; Olstad, Kjetil; Garmo, Øyvind Aaberg; Grung, Merete; de Wit, Heleen (NIVA-rapport;7259, Research report, 2018)
    Overvåking av referanseelver startet opp i 2017, og 47 antatte referansevannforekomster ble undersøkt. Vannforekomstene dekket alle økoregioner og mange ulike elvetyper, men det er knyttet relativt stor usikkerhet til en ...
  • Sætersjøen i Nord-Odal: En undersøkelse av vannkvalitet med resipientvurdering i 2008 

    Løvik, Jarl Eivind (NIVA-rapport;5691-2008, Research report, 2008)
    På grunnlag av undersøkelser i 2008 kan Sætersjøen karakteriseres som en grunn, markert humuspåvirket, kalkfattig og næringsfattig innsjø med lave konsentrasjoner av næringsstoffer og små algemengder. Vannkvaliteten kan ...
  • Mesocosm study with thermally treated (TCC) and water-based drill cuttings (WBM) 

    Trannum, Hilde Cecilie; Schaanning, Morten; Johansen, Joachim; Moodley, Leon; Westerlund, Stig; Baussant, Thierry (NIVA-rapport;7033, Research report, 2016)
    Mesocosm and bottle slurry experiments were conducted to assess and compare the effects of thermally treated cuttings (TCC) versus cuttings with water-based mud (WBM) on benthic communities. While WBM has been discharged ...
  • Årsovervåking med FerryBox - Indre Oslofjord 2017-Datarapport 

    Norli, Marit; Eikrem, Wenche (NIVA-rapport;7266, Research report, 2018)
    Her rapporteres resultatene fra 2017 for årsovervåkingen med FerryBox i Indre Oslofjord for 2017. Undersøkelsene omfatter fysiske, kjemiske og biologiske forhold målt med FerryBox om bord på MS Color Fantasy. Målingene ...
  • Ørreten på Hardangervidda: Klimaets betydning for årsklassestyrke og produksjon av fisk og næringsdyr i Sandvatn 2001-2017. 

    Qvenild, Tore; Rognerud, Sigurd (NIVA-rapport;7267, Research report, 2018)
    Vi har undersøkt fiskebestanden i Sandvatn i Kvenna i perioden 2001-2017. I denne perioden har bestanden variert fra middels tett til svært tett, og fra 2007 til en stadig tynnere bestand. Det er nå en tendens til at ...
  • Tekniske anvisninger for eDNA-baseret overvågning af ikke-hjemmehørende marine arter 

    Knudsen, Steen W.; Hesselsøe, Martin; Bekkevold, Dorte; Jensen, Søren; Møller, Peter Rask; Andersen, Jesper Harbo (NIVA-rapport;7203, Research report, 2018)
    Denne rapport indeholder tekniske anvisninger for, hvordan miljø-DNA (environmental-DNA, eller eDNA) kan indsamles, opbevares, oprenses og spores. Anvisningerne består af tre dele: (1) indsamling og filtrering af vand med ...

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