Now showing items 153-172 of 372

    • Genetic fingerprinting of salmon louse (Lepeophtheirus salmonis) populations in the North-East Atlantic using a random forest classication approach 

      Jacobs, Arne; De Noia, M; Præbel, Kim; Kanstad-Hanssen, Øyvind; Paterno, M; Jackson, D; McGinnity, P; Sturm, Armin; Elmer, K. R.; Llewellyn, Martin (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-01-19)
      Caligid sea lice represent a significant threat to salmonid aquaculture worldwide. Population genetic analyses have consistently shown minimal population genetic structure in North Atlantic <i>Lepeophtheirus salmonis</i>, frustrating efforts to track louse populations and improve targeted control measures. The aim of this study was to test the power of reduced representation library sequencing ...
    • The geographic scope of the svalbard treaty and norwegian sovereignty: historic - or evolutionary - interpretation? 

      Ørebech, Peter Th (Journal article; Tidsskriftartikkel; Peer reviewed, 2017)
      The Svalbard Treaty and its claimed ‘extended-reach’ jurisdiction incorporating both the continental shelf and exclusive economic zone (EEZ) – ie a fisheries protection zone (FPZ) – is an international law puzzle. Disputes regarding the Treaty’s jurisdictione ratione terrae results from interpretative differences. My findings are as follows: the Treaty’s concept of ‘full and absolute sovereignty’ ...
    • "Getting ItRight":The Birth of a New EU Common Fishery Policy? Legislative and Legal Perspectives on the Annulling of the "Five Structural Failings" 

      Ørebech, Peter Th (Journal article; Tidsskriftartikkel; Peer reviewed, 2015)
      This lex ferenda article examines EU efforts to change the criticized and now-repealed 2002 “top-down” management regulation with its discard system, vessel decommissioning, fishing effort management, and quota allocations. The 2013 regulation’s objective is to remedy the Common Fisheries Policy’s “five structural failings.” Unfortunately, the new regulations have failed to improve the situation. ...
    • Getting traceability right, from fish to advanced bio-technological products: a review of legislation 

      Borit, Melania; Santos, Jorge (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-10-01)
      Traceability is a tool used by regulators to manage risk in multiple supply chains, including supply chains of goods derived from genetically modified organisms, human blood, seafood products, toys and hazardous waste. This tool may help support a variety of claims that range from concern for nature to consumer satisfaction and health. This paper examines the consistency of European Union legislation ...
    • Global aquaculture growth and institutional quality 

      Nadarajah, Suthamathy; Flaaten, Ola (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-10)
      The global aquaculture sector has grown continuously over the past 40 years, though unevenly among countries. Differences in factors such as inputs, climate, management, technology, markets, social environment, and institutions might be reasons for the disparities in growth. This study focuses on institutions, by analyzing the relationship between annual growth in the production of the major aquaculture ...
    • Governing the fisher body – safety as body-politics and fisheries governance 

      Sønvisen, Signe Annie; Thorvaldsen, Trine; Johnsen, Jahn Petter (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-07-12)
      Body Mass Index (BMI) is not only the prevailing tool used for defining and diagnosing obesity, but it is also a tool that intervenes into fisheries governance, and into fishers’ lives and bodies. All fishers on board vessels over 100 gross tons (GT) must hold a seaman’s licence; too high a BMI may lead to a “loss-of-licence” and the inability to undertake their occupation. From a governmentality ...
    • The greening of Norwegian salmon production 

      Hersoug, Bjørn (Journal article; Peer reviewed; Tidsskriftartikkel, 2015-11-16)
      The Norwegian salmon industry has, in terms of production and economic results, been a great success. However, due to environmental problems such as sea lice and escapes, the industry encounters increasing resistance from many quarters, headed by the wild salmon sport fishers. In order to improve the image of the industry, the fisheries authorities have suggested four new reforms that all ...
    • Harvest control rules in modern fisheries management 

      Kvamsdal, Sturla F; Eide, Arne; Ekerhovd, Nils-Arne; Enberg, Katja; Gudmundsdottir, Asta; Hoel, Alf Håkon; Mills, Katherine E.; Mueter, Franz J.; Ravn-Jonsen, Lars; Sandal, Leif Kristoffer; Stiansen, Jan Erik; Vestergaard, Niels (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-07-20)
      Harvest control rules have become an important tool in modern fisheries management, and are increasingly adopted to provide continuity in management practices, to deal with uncertainty and ecosystem considerations, and to relieve management decisions from short-term political pressure. We provide the conceptual and institutional background for harvest control rules, a discussion of the structure of ...
    • A head start for an invasive species in a strongly seasonal environment? Growth of Elodea canadensis in boreal lakes 

      Tattersdill, Kristina; Ecke, Frauke; Frainer, André; McKie, Brendan G. (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-11-20)
      Many invasive species are expanding northwards into boreal and subarctic habitats, but research on the factors favoring their establishment in these regions remains limited. In three Swedish lakes we investigated the growth of Elodea canadensis Michx, a highly invasive macrophyte that is spreading northwards in Europe and Alaska. We conducted an in situ growth experiment, maintained for ten months, ...
    • Heat treatment increases the protein bioaccessibility in the red seaweed dulse (Palmaria palmata), but not in the brown seaweed winged kelp (Alaria esculenta) 

      Mæhre, Hanne K; Edvinsen, Guro Kristine; Eilertsen, Karl-Erik; Elvevoll, Edel Oddny (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-04-25)
      Bioaccessibility of plant proteins has been shown to be inferior to that of proteins of animal origin. Heat treatment has been shown to positively affect this in some plants. The aim of this study was to investigate the effect of heat treatment on bioaccessibility of seaweed proteins. An in vitro gastrointestinal digestion model was used for evaluation of potential effects on the brown seaweed Alaria ...
    • Histological and bacteriological changes in intestine of beluga (Huso huso) following ex vivo exposure to bacterial strains 

      Salma, Wahida; Zhou, Zhigang; Wang, Wenwan; Askarian, Fatemeh; Kousha, Armin; Ebrahimi, Maryam Tajabadi; Myklebust, Reidar; Ringø, Einar (Journal article; Tidsskriftartikkel; Peer reviewed, 2011)
      In the present study the intestinal sac method (ex vivo) was used to evaluate the interactions between lactic acid bacteria and staphylococci in the gastrointestinal (GI) tract of beluga (Huso huso). The distal intestine (DI) of beluga was exposed ex vivo to Staphylococcus aureus, Leuconostoc mesenteroides and Lactobacillus plantarum. Histological changes following bacterial exposure were assessed ...
    • Homing of Antigen-Presenting Cells in Head Kidney and Spleen – Salmon Head Kidney Hosts Diverse APC Types 

      Iliev, Dimitri Borisov; Thim, Hanna Leena; Lagos, Leidy; Olsen, randi; Jørgensen, Jorunn B (Journal article; Tidsskriftartikkel; Peer reviewed, 2013)
      Lymph nodes and spleen are major organs where mammalian antigen-presenting cells (APCs) initiate and orchestrate Ag-specific immune responses. Unlike mammals, teleosts lack lymph nodes and an interesting question is whether alternative organs may serve as sites for antigen presentation in teleosts. In the current study, fluorescent ovalbumin (Ova) and CpG oligonucleotides (ODNs) injected intra-abdominally ...
    • How many fish need to be measured to effectively evaluate trawl selectivity? 

      Herrmann, Bent; Sistiaga, Manu Berrondo; Santos, Juan; Sala, Antonello (Journal article; Tidsskriftartikkel; Peer reviewed, 2016)
      The aim of this study was to provide practitioners working with trawl selectivity with general and easily understandable guidelines regarding the fish sampling effort necessary during sea trials. In particular, we focused on how many fish would need to be caught and length measured in a trawl haul in order to assess the selectivity parameters of the trawl at a designated uncertainty level. We also ...
    • How vulnerable is the European seafood production to climate warming? 

      Blanchet, Marie-Anne; Primicerio, Raul; Smalås, Aslak; Arias-Hansen, Juliana; Aschan, Michaela (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-10-16)
      The main challenge for the European seafood industry is to ensure sustainable production volume while adapting to climate warming. Marine fisheries mainly target 41 species which account for 80% of the seafood production in Europe. The remaining 20% comes from marine and freshwater aquaculture, which harvest mainly 5 and 11 species, respectively. European seafood production volume (2004–2014) recorded ...
    • Hundreds of species observations and four ascomycetes new to Norway during a mycology field course 

      Rämä, Teppo (Journal article; Tidsskriftartikkel; Peer reviewed, 2018)
      During a mycology field course in Drøbak 29th August – 2nd September 2011 several interesting and some new taxa to Norway were found. Species not previously recorded in Norway include <i>Tatraea dumbirensis, Corollospora maritima, Nectriopsis candicans</i> and <i>Ombrophila juniperinella</i>. A list of 413 taxa, including records of three threatened species, is given and the ecology and distribution ...
    • Hva begrenser tilgangen på sjøareal til havbruksnæringen? 

      Hersoug, Bjørn; Andreassen, Otto; Johnsen, Jahn Petter; Robertsen, Roy (Research report; Forskningsrapport, 2014-08-13)
      Prosjektet har hovedfokus på havbruksnæringens lokalitetstilgang sett i lys av økt arealbehov ut fra havbruknæringens ønske om vekst. Denne veksten er ikke uproblematisk, for bruk av kystsonen utfordres av mange interesser og brukerere. De siste årene har bærekraftig utvikling av næringen hatt sterkt fokus, hvor klare miljøutfordringer relatert til påvirkning av villaks, luseproblematikk, forurensing, ...
    • Hvordan planlegges kystsonen? Kartlegging av gjeldende planpraksis etter plan- og bygningsloven i sjøområdene 

      Sørdahl, Patrick Berg; Solås, Ann-Magnhild; Kvalvik, Ingrid; Hersoug, Bjørn (Research report; Forskningsrapport, 2017-06)
      Planlegging i kystsonen har de senere år blitt bedre, og det gjøres mye godt planarbeid ute i kommunene. Flere og flere kommuner har vedtatte planer som dekker sjøarealet, antall interessenter som involveres øker, og omfanget og kvaliteten av datagrunnlaget blir stadig bedre. Flere kommuner tar også initiativ til interkommunale samarbeid hvor større sjøarealer planlegges på tvers av kommunegrensene. ...
    • The impact of coastal grabbing on community conservation – a global reconnaissance 

      Bavinck, Jan Maarten; Berkes, Fikret; Charles, Anthony; Dias, Ana Carolina Esteves; Doubleday, Nancy; Nayak, Prateep; Sowman, Merle (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-05-14)
      "Coastal grab" refers to the contested appropriation of coastal (shore and inshore) space and resources by outside interests. This paper explores the phenomenon of coastal grabbing and the effects of such appropriation on community-based conservation of local resources and environment. The approach combines social-ecological systems analysis with socio-legal property rights studies. Evidence of ...
    • Impact of Multiple Ecological Stressors on a Sub-Arctic Ecosystem: No Interaction Between Extreme Winter Warming Events, Nitrogen Addition and Grazing 

      Bokhorst, Stef; Berg, Matty P.; Edvinsen, Guro Kristine; Ellers, Jacintha; Heitman, Amber; Jaakola, Laura; Mæhre, Hanne K; Phoenix, Gareth K.; Tømmervik, Hans; Bjerke, Jarle W. (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-11-30)
      Climate change is one of many ongoing human-induced environmental changes, but few studies consider interactive effects between multiple anthropogenic disturbances. In coastal sub-arctic heathland, we quantified the impact of a factorial design simulating extreme winter warming (WW) events (7 days at 6–7∘C) combined with episodic summer nitrogen (+N) depositions (5 kg N ha-1) on plant winter physiology, ...
    • The importance of ecological networks in multiple-stressor research and management 

      Bruder, Andreas; Frainer, André; Rota, Thibaut; Primicerio, Raul (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-05-07)
      Multiple stressors are increasingly affecting organisms and communities, thereby modifying ecosystems' state and functioning. Raising awareness about the threat from multiple stressors has increased the number of experimental and observational studies specifically addressing consequences of stressor interactions on biota. Most studies measure the direct effects of multiple stressors and their ...