Now showing items 304-323 of 372

    • Screening for antibacterial and antifungal activities in marine benthic invertebrates from northern Norway 

      Tadesse, Margey; Gulliksen, Bjørn; Strøm, Morten B.; Styrvold, Olaf B.; Haug, Tor (Journal article; Tidsskriftartikkel; Peer reviewed, 2008-06-18)
      Benthic marine invertebrates collected from sub-Arctic regions of northern Norway, were found to be a promising source of novel bioactive compounds against human and fish pathogenic bacteria and fungi. Lyophilized material from seven species of ascidians, six sponges and one soft alcyonid coral were extracted with 60% acidified acetonitrile (ACN). After separation into an ACN-rich phase (ACN extract) ...
    • Seafood from a changing Arctic 

      Troell, Max; Eide, Arne; Isaksen, John Roald; Hermansen, Øystein; Crépin, Anne-Sophie (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-10-27)
      We review current knowledge about climate change impacts on Arctic seafood production. Large-scale changes in the Arctic marine food web can be expected for the next 40–100 years. Possible future trajectories under climate change for Arctic capture fisheries anticipate the movement of aquatic species into new waters and changed the dynamics of existing species. Negative consequences are ...
    • Seasonal and yearly variation of total polyphenols, total anthocyanins and ellagic acid in different clones of cloudberries (Rubus chamaemorus L.) 

      Hykkerud, Anne Linn; Uleberg, Eivind; Hansen, Espen; Vervoort, Marieke; Mølmann, Jørgen; Martinussen, Inger (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-05-02)
      Cloudberry (Rubus chamaemorus L.) is a wild perennial shrub growing on peatland with a circumpolar distribution. The combined berries have a high polyphenol content comprised primarily of ellagitannins. A few commercial cultivars are available, and pre-breeding trials on clonal material from different geographical origins are in progress. The objective of this study was to investigate how the content ...
    • Seasonal variability of meio- and macrobenthic standing stocks and diversity in an Arctic fjord (Adventfjorden, Spitsbergen) 

      Pawlowska, J.; Wlodarska-Kowalczuk, Maria; Zajaczkowski, Marek; Nygård, Henrik Andreas; Berge, Jørgen (Journal article; Tidsskriftartikkel; Peer reviewed, 2011)
      Strong environmental seasonality is a basic feature of the Arctic system, still there are few published records of the seasonal variability of the Arctic marine biota. This study examined the year-round seasonal changes of soft bottom macro- and meiobenthic standing stocks and diversity on a station located in an Arctic fjord (Adventfjorden, Spitsbergen). The seasonality observed in benthic biota ...
    • Second Polar Prediction Project (PPP) Societal and Economic Research and Applications (SERA) Meeting focused on end user use of weather and climate information 

      Thoman, Rick L; Dawson, Jackie; Liggett, Daniela; Lamers, Machiel; Stewart, Emma; Ljubicic, Gita; Knol, Maaike; Hoke, Winfried (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-01-23)
      A primary goal of the World Meteorological Organization’s Polar Prediction Project (PPP) is to advance numerical modeling, data acquisition and assimilation, ensemble forecast methods, verification, and the development of prediction products for the polar regions. However, as aptly expressed more than two decades ago, “it should be understood that forecasts have no intrinsic value. They acquire value ...
    • Securing a just space for small-scale fisheries in the blue economy 

      Cohen, Philippa J; Allison, Edward H; Andrew, Neil L; Cinner, Joshua; Evans, Louisa S; Fabinyi, Michael; Garces, Len R; Hall, Stephen J; Hicks, Christina C; Hughes, Terry P; Jentoft, Svein; Mills, David J; Masu, Rosalie; Mbaru, Emmanuel K; Ratner, Blake D (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-04-18)
      The vast developmental opportunities offered by the world’s coasts and oceans have attracted the attention of governments, private enterprises, philanthropic organizations, and international conservation organizations. High-profile dialogue and policy decisions on the future of the ocean are informed largely by economic and ecological research. Key insights from the social sciences raise concerns ...
    • Selection, Succession and Stabilization of Soil Microbial Consortia 

      Zegeye, Elias; Brislawn, Colin; Farris, Yulia; Fansler, Sarah; Hofmockel, Kirsten; Jansson, Janet K.; Wright, Aaron; Graham, Emily; Naylor, Dan; McClure, Ryan S.; Bernstein, Hans Christopher (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-05-14)
      Soil microorganisms play fundamental roles in cycling of soil carbon, nitrogen, and other nutrients, yet we have a poor understanding of how soil microbiomes are shaped by their nutritional and physical environment. In this study, we investigated the successional dynamics of a soil microbiome during 21 weeks of enrichment on chitin and its monomer, N-acetylglucosamine. We examined succession of the ...
    • Sequence Analysis of the Genome of Piscine Orthoreovirus (PRV) Associated with Heart and Skeletal Muscle Inflammation (HSMI) in Atlantic Salmon (Salmo salar) 

      Markussen, Turhan; Dahle, Maria Krudtaa; Tengs, Torstein; Løvoll, Marie Therese; Finstad, Øystein Wessel; Wiik-Nielsen, Christer R.; Grove, Søren; Lauksund, Reidunn Silje; Robertsen, Børre; Rimstad, Espen (Journal article; Tidsskriftartikkel; Peer reviewed, 2013)
      Piscine orthoreovirus (PRV) is associated with heart- and skeletal muscle inflammation (HSMI) of farmed Atlantic salmon (Salmo salar). We have performed detailed sequence analysis of the PRV genome with focus on putative encoded proteins, compared with prototype strains from mammalian (MRV T3D)- and avian orthoreoviruses (ARV-138), and aquareovirus (GCRV-873). Amino acid identities were low for ...
    • Sequence Analysis of the Genome of Piscine Orthoreovirus (PRV) Associated with Heart and Skeletal Muscle Inflammation (HSMI) in Atlantic Salmon (Salmo salar) 

      Markussen, Turhan; Dahle, Maria Krudtaa; Tengs, Torstein; Løvoll, Marie Therese; Finstad, Øystein Wessel; Wiik-Nielsen, Christer R.; Grove, Søren; Lauksund, Reidunn Silje; Robertsen, Børre; Rimstad, Espen (Journal article; Tidsskriftartikkel; Peer reviewed, 2013)
      Piscine orthoreovirus (PRV) is associated with heart- and skeletal muscle inflammation (HSMI) of farmed Atlantic salmon (Salmo salar). We have performed detailed sequence analysis of the PRV genome with focus on putative encoded proteins, compared with prototype strains from mammalian (MRV T3D)- and avian orthoreoviruses (ARV-138), and aquareovirus (GCRV-873). Amino acid identities were low for ...
    • Sequential bargaining, external effects of agreement, and public intervention 

      Aanesen, Margrethe (Journal article; Tidsskriftartikkel; Peer reviewed, 2012)
      In some bargaining situations, agreement has implications for agents beyond the parties involved, and if so, delays in reaching an agreement or failing to reach an agreement, when this would be profitable, may imply significant welfare losses. The question raised in this paper is whether the intervention of a government, who has a positive valuation of agreement and therefore offers a subsidy, will ...
    • Sequential codend improves quality of trawlcaught cod 

      Brinkhof, Jesse; Olsen, Stein Harris; Ingólfsson, Ólafur Arnar; Herrmann, Bent; Larsen, Roger B. (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-10-10)
      Trawl-caught fish are frequently associated with deteriorated catch quality. This study presents a new dual sequential codend concept with the aim of improving the quality of trawl-caught fish by minimizing the frequency and severity of catch damage. During towing, the fish are retained in an anterior codend segment with the legislated mesh size. A quality improving codend segment, is attached to ...
    • Simulated eutrophication and browning alters zooplankton nutritional quality and determines juvenile fish growth and survival 

      Taipale, Sami Johan; Kahilainen, Kimmo Kalevi; Holtgrieve, Gordon William; Peltomaa, Elina Talvikki (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-02-06)
      The first few months of life is the most vulnerable period for fish and their optimal hatching time with zooplankton prey is favored by natural selection. Traditionally, however, prey abundance (i.e., zooplankton density) has been considered important, whereas prey nutritional composition has been largely neglected in natural settings. High‐quality zooplankton, rich in both essential amino acids ...
    • Simulated trawling: Exhaustive swimming followed by extreme crowding as contributing reasons to variable fillet quality in trawl-caught Atlantic cod (Gadus morhua) 

      Svalheim, Ragnhild Aven; Aas-Hansen, Øyvind; Heia, Karsten; Drangsholt-Karlsson, Anders; Olsen, Stein Harris; Johnsen, Helge K. (Journal article; Tidsskriftartikkel; Preprint; Manuskript, 2018-07-19)
      Trawl-caught Atlantic cod (<i>Gadus morhua</i>) often yield high variable fillet quality potentially related to capture stress. To investigate mechanisms involved in causing variable quality, commercial-sized (size 3.5±0.9 kg) Atlantic cod were swum to exhaustion in a large swim tunnel and exposed to extreme crowding (736±50 kg m3) for 0, 1 or 3 hours in an experimental cod-end. Further, fish were ...
    • Size selection of cod (Gadus morhua) and haddock (Melanogrammus aeglefinus) in the Northeast Atlantic bottom trawl fishery with a newly developed double steel grid system 

      Larsen, Roger B.; Herrmann, Bent; Sistiaga, Manu Berrondo; Grimaldo, Eduardo; Tatone, Ivan; Brinkhof, Jesse (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-02-06)
      In recent years, Norwegian fishermen have reported problems with fish accumulation in front of the mandatory sorting grids (Sort-X, Sort-V, and Flexigrid). These problems are associated with high fish entry rates and low water flow through the grid sections. In this study, we replaced the lifting panel in the original design of a sorting grid section (Sort-V) by another steel grid (“lower grid”) in ...
    • Size selection of Greenland halibut (Reinhardtius hippoglossoides) in the Norwegian bottom trawl fishery with a newly developed double grid system 

      Larsen, Roger B.; Herrmann, Bent; Sistiaga, Manu Berrondo; Grimaldo, Eduardo; Brinkhof, Jesse; Tatone, Ivan (Journal article; Tidsskriftartikkel; Peer reviewed, 2017)
      Greenland halibut (<i>Reinhardtius hippoglossoides</i>) is a commercially important species in the northeast Atlantic trawl fishery. However, direct fishing for it is not allowed and it can only be harvested as bycatch. We investigated for the first time the size selection of Greenland halibut in a newly developed double steel grid system designed for the cod and haddock bottom trawl fishery. In ...
    • Size selection of Nephrops norvegicus (L.) in commercial creel fishery in the Mediterranean Sea 

      Brčić, Jure; Herrmann, Bent; Mašanović, Marina; Baranović, Mateja; Šifner, Svjetlana Krstulović; Škeljo, Frane (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-12-23)
      In the Mediterranean Sea <i>Nephrops</i> (<i>Nephrops norvegicus</i>) is predominantly caught with bottom trawls, but it is also harvested with creels. While the size selection of <i>Nephrops</i> in bottom trawls is well documented, there is no previous information on creel size selection for this species. Therefore, sea trials were carried out to assess the selective properties of commercial creels ...
    • Size selectivity and length-dependent escape behaviour of haddock in a sorting device combining a grid and a square mesh panel 

      Herrmann, Bent; Sistiaga, Manu Berrondo; Grimaldo, Eduardo; Larsen, Roger B.; Olsen, Leonore; Brinkhof, Jesse; Tatone, Ivan (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-10-04)
      Size selectivity of a new sorting section combining a sorting grid and a square mesh panel was tested for haddock (Melanogrammus aeglefinus) in the Barents Sea demersal trawl fishery. Sampling data for a wide size range enabled investigating the selection process for this species in detail, both for the grid and the square mesh panel. Contrary to earlier studies modelling size selectivity for grids ...
    • Size selectivity of redfish (Sebastes spp.) in the Northeast Atlantic using grid-based selection systems for trawls 

      Herrmann, Bent; Sistiaga, Manu Berrondo; Larsen, Roger B.; Nielsen, Kåre Nolde (Journal article; Tidsskriftartikkel; Peer reviewed, 2013)
      Using experimental data and a model to predict size selection based on morphological data, we investigated size selection of redfish (Sebastes spp.) in the grid-based selection systems used in Northeast Atlantic trawls. We found that not all redfish make physical contact with the spacing between the bars in the sorting grids while they pass in the direction of the codend, and therefore the ...
    • Skiftende vindretning – særlige hensyn for tildeling av tillatelser til lakseoppdrett 

      Mikkelsen, Eirik Inge; Karlsen, Kine Mari; Robertsen, Roy; Hersoug, Bjørn (Research report; Forskningsrapport, 2018)
      Rapporten har tatt for seg hvilke hensyn som var særlig vektlagt i utlysningene av matfisk-tillatelser til laks og ørret i tildelingsrundene fra 2002 til 2013. I studien ble forskriftene til tildelingsrundene studert. Dette er hensyn som var nevnt spesielt i forskriftene som ble laget til hver runde, enten som kriterier for hvem som kan søke om nye tillatelser, eller hva som skulle vektlegges ved ...
    • Slakting av oppdrettslaks på båt, direkte fra oppdrettsmerd 

      Midling, Kjell Øyvind; Mejdell, Cecilie; Olsen, Stein Harris; Tobiassen, Torbjørn; Aas-Hansen, Øyvind; Aas, Kåre; Harris, Stephen; Femsteinevik, Åsmund; Oppedal, Kurt (Research report; Forskningsrapport, 2008)
      <p>Hovedmålet med prosjektet var å teste avliving og bløgging på båt, direkte fra oppdrettsmerd, i nær full industriell skala og danne grunnlag for omlegging av all slakting ved Marine Harvest, region sør. Del 1 av dette prosjektet ble gjennomført i februar 2007 på brønnbåten ”B/B Tauranga”. Hovedmålet var å evaluere bruk av mammutpumpe, bedøving, bløgging, avliving og transport av oppdrettslaks ...