Now showing items 353-372 of 372

    • Under the canopy: Community-wide effects of invasive algae in Marine Protected Areas revealed by metabarcoding 

      Wangensteen Fuentes, Owen Simon; Cebrian, Emma; Palacín, Creu; Turon, Xavier (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-12-21)
      We analysed with multigene (18S and COI) metabarcoding the effects of the proliferation of invasive seaweeds on rocky littoral communities in two Spanish Marine Protected Areas. The invasive algae studied were <i>Caulerpa cylindracea</i>, <i>Lophocladia lallemandii</i> and <i>Asparagopsis armata</i>. They are canopy-forming, landscape-dominant seaweeds, and we were interested in their effects on the ...
    • Understanding and predicting size selection in diamond-mesh cod ends for Danish seining: a study based on sea trials and computer simulations 

      Herrmann, Bent; Krag, Ludvig Ahm; Feekings, Jordan; Noack, Thomas (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-06-28)
      Danish seining is an important fishing method used to harvest demersal species. Knowledge about the size selectivity of different demersal species with this type of fishing gear is therefore of importance for managing the exploitation of marine resources. However, there are only limited data on size selection in cod ends in this fishery. Sea trials were therefore carried out to collect size selectivity ...
    • Understanding the Size Selectivity of Redfish (Sebastes spp.) in North Atlantic Trawl Codends 

      Herrmann, Bent; Sistiaga, Manu Berrondo; Nielsen, Kåre Nolde; Larsen, Roger B. (Journal article; Tidsskriftartikkel; Peer reviewed, 2012)
      The majority of trawl selectivity studies for the three redfish species of particular commercial importance in North Atlantic fisheries: Sebastes marinus, Sebastes mentella and Sebastes fasciatus, are based on data collected from diamond mesh codends with mesh sizes ranging from 88 mm to 147 mm. We demonstrate how results from these studies can be understood by morphological characteristics of ...
    • Use conflicts in ecosystem-based management - The case of oil versus fisheries 

      Arbo, Peter; Pham, Thi Thanh Thuy (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-01-30)
      Coastal states around the world are currently adopting an integrated and ecosystem-based approach to the management of coastal and ocean areas. The main aim is to promote resource use while protecting the integrity of the marine ecosystems. Focus is therefore on the conflict between economic development and conservation. Less attention is paid to the complex uses of the ocean and the conditions for ...
    • Use of semi-pelagic trawling for reducing bycatch in shrimp trawls. Trials onboard R/V Johan Ruud 02-06 February 2015 

      Sistiaga, Manu Berrondo; Grimaldo, Eduardo; Larsen, Roger B.; Tatone, Ivan; Vollstad, Jørgen; Herrmann, Bent (Research report; Forskningsrapport, 2015)
      The present study evaluates whether lifting the trawl doors and sweeps from the seabed can reduce bycatch in shrimp trawl fisheries. We carried out a catch comparison and catch ratio analysis between two gear setups, one with the trawl doors and sweeps at the seabed (the traditional way) and the other with the doors and sweeps lifted. The study was carried out on American plaice. The results ...
    • Using Machine Learning to Uncover Latent Research Topics in Fishery Models 

      Syed, Shaheen; Weber, Charlotte Teresa (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-01-16)
      Modeling has become the most commonly used method in fisheries science, with numerous types of models and approaches available today. The large variety of models and the overwhelming amount of scientific literature published yearly can make it difficult to effectively access and use the output of fisheries modeling publications. In particular, the underlying topic of an article cannot always be ...
    • Vaccination of Atlantic lumpfish (Cyclopterus lumpus L.) at a low temperature leads to a low antibody response against Aeromonas salmonicida 

      Erkinharju, Toni; Dalmo, Roy Ambli; Vågsnes, Øyvind; Hordvik, Ivar; Seternes, Tore (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-12-11)
      We present a study on the effect of water temperature on immunization of Atlantic lumpfish. In total, 360 fish were vaccinated with either 50 μl of an oil‐based injection vaccine (VAX), with Aeromonas salmonicida and Vibrio salmonicida antigens, or PBS. Fish were vaccinated at three different water temperatures, 5°C, 10°C and 15°C, and sorted into six groups (N = 60). Lumpfish were weighed every 3 ...
    • Vaccine adjuvants in fish vaccines make a difference: comparing the effects of three adjuvants (Montanide ISA763A oil, CpG/poly I:C combo and VHSV glycoprotein) used alone or in combination to formulate an inactivated salmonid alphavirus whole virus antigen 

      Thim, Hanna Leena; Villoing, Stéphane; McLoughlin, Marian F; Cristie, Karen Elina; Grove, Søren; Frost, Petter; Jørgensen, Jorunn B (Journal article; Tidsskriftartikkel; Peer reviewed, 2014)
    • Valuing blue carbon changes in the Arctic ocean 

      Armstrong, Claire W.; Foley, Naomi; Slagstad, Dag; Chierici, Melissa; Ellingsen, Ingrid H.; Reigstad, Marit (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-06-25)
      The ocean capacity to store carbon is crucial, and currently absorbs about 25% CO<sub>2</sub> supply to the atmosphere. The ability to store carbon has an economic value, but such estimates are not common for ocean environments, and not yet estimated for the Arctic Ocean. With the severe climatic changes in the Arctic Ocean, impacting sea ice and potentially the vertical carbon transport mechanisms, ...
    • Valuing coastal recreation and the visual intrusion from commercial activities in Arctic Norway 

      Aanesen, Margrethe; Falk-Andersson, Jannike; Vondolia, Godwin Kofi; Borch, Trude; Navrud, Ståle; Tinch, Dugald (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-01-04)
      The coastal zone in the Arctic is being extensively used for recreational activities. Simultaneously, there is an increasing pressure from commercial activities. We present results from a discrete choice experiment implemented in Arctic Norway, revealing how households in this region make trade-offs between recreational activities and commercial developments in the coastal zone. Our results show ...
    • Verktøy for å måle fiskekvalitet - basert på forbrukernes oppfatning (Fase 1 – Forprosjekt). Sluttrapport 

      Nilsen, Heidi; Esaiassen, Margrethe; Østli, Jens; Nøstvold, Bjørg Helen; Pleym, Ingelinn Eskildsen; Reynisson, Eyjólfur; Skjelvareid, Martin Hansen; Heia, Karsten (Research report; Forskningsrapport, 2014-10-16)
      Ved å ha et enkelt verktøy til bruk ved vurdering av kvalitet på fisk i disk kan man sikre at fisk som tilbys forbrukerne har god kvalitet. Det er imidlertid vanskelig å måle fiskekvalitet. Samtidig er det behov for et verktøy for å evaluere kvaliteten på fisken som omsettes. Butikkansatte har behov for å vurdere om fisken holder god nok kvalitet ved mottak og når den skal legges i disken. Mattilsynet ...
    • Viral assemblage variation in an Arctic shelf seafloor 

      Nguyen, Tan Thi; Robertsen, Espen Mikal; Landfald, Bjarne (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-02-09)
      Spatial differences in microbial communities are observable even in habitats with moderate environmental variation, such as within the pelagic zone or seafloor of geographically finite regions of the oceans. Here we explore whether biogeographical variations are also manifested at this level in the structure of viral assemblages by comparing DNA viromes from the Barents Sea upper seafloor, collected ...
    • "Volstadsaken: Den «Høist Ærverdige Ret" 

      Ørebech, Peter (Chronicle; Kronikk, 2013)
      Det uklarhet mht. hva som egentlig er avgjort ved Volstad-dommen (Høyesteretts plenumsdom av 23 oktober 2013). Jeg skal i denne kronikk kort redegjøre for hva som er avgjort og hva dommen ikke tar stilling til.
    • Walking the talk: implementing the international voluntary guidelines for securing sustainable small-scale fisheries 

      Jentoft, Svein (Journal article; Tidsskriftartikkel; Peer reviewed, 2014)
    • What does stakeholder involvement mean for fisheries management? 

      Aanesen, Margrethe; Armstrong, Claire W.; Bloomfield, Helen J.; Röckmann, Christine (Journal article; Tidsskriftartikkel; Peer reviewed, 2014)
    • What hat are you wearing? On the multiple roles of fishery scientists in the ICES community 

      Dankel, Dorothy Jane; Stange, Kari; Nielsen, Kåre Nolde (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-10-29)
      Trends towards a more participatory agenda in policy-relevant science imply that the roles and work tasks of scientists become more multifaceted. In Europe, the increased use of multiannual plans creates a need for fishery scientists to contribute with their expertise in a wide variety of situations. We identify and characterize four roles for scientists as <i>developers</i>, <i>reviewers</i>, ...
    • When is enough, enough? Quantifying trade-offs between information quality and sampling effort for fishing gear selectivity data 

      Veiga-Malta, Tiago; Feekings, Jordan; Herrmann, Bent; Krag, Ludvig Ahm (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-06-21)
      There is general pressure throughout the world’s fisheries for the industry to have greater involvement not only in the development of fishing gears but also in the testing and documentation of their effect. In the European Union, the Common Fisheries Policy of 2013, together with the proposed reform of the technical measures regulation, highlights the need for greater flexibility in fisheries through ...
    • Willingness to pay for unfamiliar public goods: Preserving cold-water coral in Norway 

      Aanesen, Margrethe; Armstrong, Claire W.; Czajkowski, Mikolaj; Falk-Andersson, Jannike; Hanley, Nick; Navrud, Ståle (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-02-17)
      The world's largest concentration of cold-water coral (CWC) is found off the Norwegian coast. Most CWC discoveries are recent, posing new challenges for Norwegian coastal and fishery authorities regarding the management of deep-sea resources. Scientific knowledge of CWC is limited, and many citizens have not even heard about them. This creates problems for the application of the stated preference ...
    • Økt lønnsomhet i torskesektoren - Sluttrapport Arbeidspakke 1 - Politiske og institusjonelle samfunnsbindinger 

      Dreyer, Bent; Holm, Petter; Henriksen, Edgar (Research report; Forskningsrapport, 2015)
      Rapporten gir en oversikt over aktivitet og funn i programmet «Økt lønnsomhet i torskesektoren» - Arbeidspakke 1. Programmet ble startet opp i 2011, og Arbeidspakke 1 - Politiske og institusjonelle samfunnsbindinger - var den aktiviteten i programmet som fikk størst oppmerksomhet i oppstartsfasen. Hensikten med denne aktiviteten i programmet var å redegjøre for de eksisterende rammevilkårene – ...
    • Økt lønnsomhet i torskesektoren. Sluttrapport 

      Dreyer, Bent; Bendiksen, Bjørn Inge; Henriksen, Edgar; Hermansen, Øystein; Holm, Petter; Iversen, Audun; Karlsen, Kine Mari; Svorken, Marianne; Isaksen, John Roald; Olsen, Petter; Sørdahl, Patrick Berg (Research report; Forskningsrapport, 2016-10-19)
      Rapporten gir en oversikt over aktivitet og funn i programmet «Økt lønnsomhet i torskesektoren». Programmet ble startet opp i 2011 og avsluttet sommeren 2016. Rapporten er organisert på følgende måte. Først redegjøres det for intensjonene med programmet. Deretter redegjøres det for hvordan programmet har vært organisert. Så gis det en oversikt over de ulike leveransene i programmet og ...