Viser treff 173-192 av 929

    • The creation of coastal space – how local ecological knowledge becomes relevant 

      Johnsen, Jahn Petter; Hersoug, Bjørn; Solås, Ann-Magnhild (Journal article; Tidsskriftartikkel; Peer reviewed, 2014)
      Since the 1990s, substantial efforts have been invested in Local Ecological Knowledge (LEK) research, but LEK has only been applied in western fisheries and resource management to a limited extent. The attempts to link LEK to model-based fish stock assessment seem to have failed largely because the format of LEK does not fit into the models currently in use. However, LEK is still relevant for ...
    • CREELSELECT—A method for determining the optimal creel mesh: Case study on Norway lobster (Nephrops norvegicus) fishery in the Mediterranean Sea 

      Brčić, Jure; Herrmann, Bent; Mašanović, Marina; Šifner, Svjetlana Krstulović; Škeljo, Frane (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-03-31)
      In the laboratory, we investigated which sizes of <i>Nephrops</i> (<i>Nephrops norvegicus</i>) could pass through the meshes of different size and shape to establish a predictive model for the creels size selectivity. Predictions agreed well with the results from experimental fishing, demonstrating the reliability of this simple method. <i>Nephrops</i> minimum target size is 20 mm carapace length ...
    • CRISP Work Package 5 - Top quality trawl captured fish 

      Olsen, Stein Harris; Nilsen, Heidi; Larssen, Kjell; Svalheim, Ragnhild Aven; Midling, Kjell Øyvind (Conference object; Konferansebidrag, 2016-08-16)
      The overall goal for CRISP (WP 5) is to contribute to, and develop, the competitive power of the trawling fleet by implement new technology and knowledge. The focus is on the processing, from when the fish is in the trawl at the seabed until the processed and finished raw material is packed and in storage.
    • CRISPR/Cas9-Mediated Gene Editing in Salmonids Cells and Efficient Establishment of Edited Clonal Cell Lines 

      Strømsnes, Trygve; Schmidke, Sebastian; Azad, Mitra; Singstad, Øyvind; Grønsberg / Mikkelsen, Idun Merete; Dalmo, Roy Ambli; Okoli, Arinze Stanley (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-12-19)
      Finfish production has seen over three-fold increase in the past 30 years (1990–2020), and Atlantic salmon (A. salmon; salmo salar) accounted for approximately 32.6% of the total marine and coastal aquaculture of all finfish species in the year 2020, making it one of the most profitable farmed fish species globally. This growth in production is, however, threatened by a number of problems which can ...
    • Criteria for Safe Use of Plant Ingredients in Diets for Aquacultured Fish 

      Hemre, Gro-Ingun; Ringø, Einar; Amlund, Heidi; Aursand, Marit; Bakke-McKellep, Anne Marie; Olsen, Rolf Erik; Svihus, Birger (Research report; Forskningsrapport, 2009)
      A thorough review of different aspects on the health implications of using vegetable feed ingredients, both protein and lipid alternatives to fishmeal and fish oil, plus possible additions of immunostimulants, also including a short chapter on undesirable components, the use of genetically modified plants, and how processing may affect feed quality and availability, are given in the different chapters ...
    • Critical Role of an MHC Class I-Like/Innate-Like T Cell Immune Surveillance System in Host Defense against Ranavirus (Frog Virus 3) Infection 

      Edholm, Eva-Stina Isabella; De Jesus Andino, Francisco; Yim, Jinyeong; Woo, Katherine; Robert, Jacques (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-04-06)
      Besides the central role of classical Major Histocompatibility Complex (MHC) class Ia-restricted conventional Cluster of Differentiation 8 (CD8) T cells in antiviral host immune response, the amphibian <i>Xenopus laevis</i> critically rely on MHC class I-like (mhc1b10.1.L or XNC10)-restricted innate-like (i)T cells (iVα6 T cells) to control infection by the ranavirus Frog virus 3 (FV3). To complement ...
    • Cultivable marine fungi from the Arctic Archipelago of Svalbard and their antibacterial activity 

      Hagestad, Ole Christian; Andersen, Jeanette hammer; Altermark, Bjørn; Hansen, Espen; Rämä, Teppo (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-12-27)
      During a research cruise in 2016, we isolated fungi from sediments, seawater, driftwood, fruiting bodies, and macroalgae using three different media to assess species richness and potential bioactivity of cultivable marine fungi in the High Arctic region. Ten stations from the Svalbard archipelago (73–80 °N, 18–31 °E) were investigated and 33 fungal isolates were obtained. These grouped into 22 ...
    • The Cyborgization of the Fisheries : on Attempts to Make Fisheries Management Possible 

      Johnsen, Jahn Petter; Sinclair, Peter; Bavington, Dean; Holm, Petter (Journal article; Tidsskriftartikkel; Peer reviewed, 2009)
      Although natural resource exploitation has a long tradition, modern resource management is a more recent phenomenon. The huge variety in natural resource exploitation has made it difficult to place the industrial harvesting of marine living resources under political and managerial control. For most of history fish and fishing people have for all practical purposes been unmanageable. From the late ...
    • Data Envelopment Analysis for Analyzing Technical Efficiency in Aquaculture: The bootstrap methods 

      Pham, Thi Thanh Thuy (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-01-14)
      The paper adopts the bootstrap procedures for data envelopment analysis to analyze the technical efficiency in the Vietnam’s intensive white-leg shrimp farming. The results demonstrate that the null hypothesis of constant returns-to-scale is rejected in favor of variable returns-to-scale for the production technology. Moreover, the potential improvement is greater using bootstrapping than that ...
    • Data on European seafood biomass production by country, sectors, and species in 2004–2014 and on ecological characteristics of the main species produced 

      Blanchet, Marie-Anne; Primicerio, Raul; Smalås, Aslak; Arias-Hansen, Juliana; Aschan, Michaela (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-10-30)
      In this data article, we present the 2004–2014 average European seafood production volume by production sector, country, and species. The production data originates from the Food and Agriculture Organisation of the United Nations (FAO) and covers three production sectors: Marine fisheries, marine aquaculture, and freshwater production. We present the main ecological characteristics of each species ...
    • Data on European seafood biomass production by country, sectors, and species in 2004–2014 and on ecological characteristics of the main species produced 

      Blanchet, Marie-Anne; Primicerio, Raul; Smalås, Aslak; Arias-Hansen, Juliana; Aschan, Michaela (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-10-30)
      In this data article, we present the 2004–2014 average European seafood production volume by production sector, country, and species. The production data originates from the Food and Agriculture Organisation of the United Nations (FAO) and covers three production sectors: Marine fisheries, marine aquaculture, and freshwater production. We present the main ecological characteristics of each species ...
    • Data Stewardship (DocEnhance) 

      Risan Johnsen, Hanne; Andreassen, Helene N. (Conference object; Konferansebidrag, 2022)
    • Daylight-driven carbon exchange through a vertically structured microbial community 

      Moran, James J.; Bernstein, Hans Christopher; Mobberley, Jennifer M.; Thompson, Allison M.; Kim, Young-Mo; Dana, Karl L.; Cory, Alexandra B.; Courtney, Steph; Renslow, Ryan S.; Fredrickson, James K.; Kreuzer, Helen W.; Lipton, Mary S. (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-05-26)
      Interactions between autotrophs and heterotrophs are central to carbon (C) exchange across trophic levels in essentially all ecosystems and metabolite exchange is a frequent mechanism for distributing C within spatially structured ecosystems. Yet, despite the importance of C exchange, the timescales at which fixed C is transferred in microbial communities is poorly understood. We employed a ...
    • Deep-sea sponge derived environmental DNA analysis reveals demersal fish biodiversity of a remote Arctic ecosystem 

      Brodnicke, Ole Bjørn; Meyer, Heidi Kristina; Busch, Kathrin; Xavier, Joana R.; Knudsen, Steen Wilhelm; Møller, Peter Daniel Rask; Hentschel, Ute Humeida; Sweet, Michael John (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-08-18)
      The deep-sea is vast, remote, and largely underexplored. However, methodological advances in environmental DNA (eDNA) surveys could aid in the exploration efforts, such as using sponges as natural eDNA filters for studying fish biodiversity. In this study, we analyzed the eDNA from 116 sponge tissue samples and compared these to 18 water eDNA samples and visual surveys obtained on an Arctic seamount. ...
    • A deliberative approach to valuation and precautionary management of cold water corals in Norway 

      Falk-Andersson, Jannike; Foley, Naomi; Armstrong, Claire W.; van den Hove, Sybille; van Rensburg, Thomas; Tinch, Rob (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-06-17)
      This paper explores management challenges in relation to human impacts on cold water corals (CWC) in Norway. CWC are a slow growing organism about which there is uncertainty regarding distribution and values. We discuss area closures to protect this environmental public good against destructive fishing practices. Focus groups were combined with questionnaires to inform precautionary management ...
    • The demands they are a-changin' 

      Brækkan, Eivind Hestvik; Thyholdt, Sverre Braathen; Asche, Frank; Myrland, Øystein (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-03-15)
      Smooth operators such as time trends are often applied to deal with unidentified demand shifters. However, if unknown factors affect demand irregularly, a time trend fails to capture the variation. We present an index approach for estimating irregular demand shifts, decomposing total demand shifts into predicted and unexplained effects. This allows separating demand shifts caused by known factors ...
    • Demographic and economic disparities among Arctic regions 

      Schmidt, Jennifer Irene; Aanesen, Margrethe; Klokov, Konstantin; Kruschov, Sergei; Hausner, Vera Helene (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-08-20)
      We use demographic and economic indicators to analyze spatial differences and temporal trends across 18 regions surrounding the Arctic Ocean. Multifactor and cluster analysis were used on 10 indicators reflecting income, employment and demography from 1995 to 2008. The main difference is between regions with high population densities, low natural growth rate, and low unemployment (Russia, Norway ...
    • Dendrobeaniamine A, a new alkaloid from the Arctic marine bryozoan Dendrobeania murrayana 

      Michael Siranjeevi, Raja Priyanka Mary; Hansen, Espen; Isaksson, Johan; Andersen, Jeanette hammer; Østnes Hansen, Kine (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-02-20)
      The new guanidine alkaloid Dendrobeaniamine A (1) was isolated from the organic extract of the Arctic marine bryozoan <i>Dendrobeania murrayana</i>. The chemical structure of 1 was elucidated by spectroscopic experiments, including 1D and 2D NMR and HRESIMS analysis. Compound 1 is a lipoamino acid, consisting of a C<sub>12</sub> fatty acid anchored to the amino acid arginine. The bioactivity of 1 ...
    • Dendrobeaniamine A, a new alkaloid from the Arctic marine bryozoan Dendrobeania murrayana 

      Michael Siranjeevi, Raja Priyanka Mary (Conference object; Konferansebidrag, 2019)
      Chemistry guided purification of the organic extract of the Arctic marine bryozoan <i>Dendrobeania murrayana</i> yielded one new compound, Dendrobeaniamine A, and it was present in abundant amounts in the organic extract. Dendrobeaniamine A is a fusion of long chain aliphatic fatty acid and the cationic amino acid residue arginine.The bioactivity and natural function of this compound thus remain to ...
    • Desarmillaria ectypa ny for Norge 

      Rämä, Teppo (Journal article; Tidsskriftartikkel; Peer reviewed, 2023)
      Desarmillaria ectypa was found new to Norway on Kvaløya, Tromsø municipality on 30th of July 2022. This rare mushroom grows on medium rich to rich fens and mires. It can be identified based on the growth habitat, medium-sized fruitbodies with yellow and brownish colors, scales on the hat center, lack of veil, gills with pinkish tint and white spores. The ecology, distribution and red-list status of ...