Now showing items 1-20 of 2892

    • Synergism between cruising cod and ambush sculpin predators on 0-group gadoids is modified by daylight cycle and presence of aggressive wolffish 

      Strand, Hans Kristian; Pedersen, Torstein; Christie, Hartvig C; Moy, Frithjof Emil (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-03-06)
      Shorthorn sculpin (<i>Myoxocephalus scorpius</i>) and large cod (300–400 g body weight) are important predators on newly settled 0-group cod (<i>Gadus morhua</i>) and saithe (<i>Pollachius virens</i>) in Porsangerfjorden in northern Norway. The Atlantic wolffish (<i>Anarhichas lupus</i>) used to be abundant but is now very rare in the fjord. Video recorded experiments showed that interactions between ...
    • “And if you gaze long into an abyss, the abyss gazes also into thee ”: four morphs of Arctic charr adapting to a depth gradient in Lake Tinnsjøen 

      Østbye, Kjartan; Hassve, Marius Hagen; Tamayo, Ana-Maria Peris; Hagenlund, Mari; Vogler, Thomas; Præbel, Kim (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-04-24)
      The origin of species is a central topic in biology. Ecological speciation might be a driver in adaptive radiation, providing a framework for understanding mechanisms, level, and rate of diversification. The Arctic charr <i>Salvelinus alpinus</i> L. is a polymorphic species with huge morphological and life‐history diversity in Holarctic water systems. We studied adaptive radiation of Arctic charr ...
    • A novel use of the leukocyte coping capacity assay to assess the immunomodulatory effects of organohalogenated contaminants in avian wildlife 

      Hansen, Elisabeth; Huber, Nikolaus; Bustnes, Jan Ove; Herzke, Dorte; Bårdsen, Bård-Jørgen; Eulaers, Igor; Johnsen, Trond Vidar; Bourgeon, Sophie (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-06-19)
      Apex predators are characterized by high levels of biomagnifying organohalogenated contaminants (OHCs) which have been found to induce detrimental health effects in wildlife, such as immune system impairment. The leukocyte coping capacity (LCC) assay is a functional real-time measure of an innate immune response essential in pathogen resistance, known as the respiratory burst. The current study ...
    • Assessing the Learning Outcomes of Food-related Educational Tourism Events for University Students: The Case of the International Student Competition of Fermo, Italy 

      Tomasi, Sabrina; Cavicchi, Alessio; Paviotti, Gigliola; Bertella, Giovanna; Santini, Cristina (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-12-30)
      This paper examines the International Student Competition on Place Brand­ing and Mediterranean Diet held in Fermo, Italy, in the context of the devel­opment of rural areas. This one-week food-related educational programme was organised by the University of Macerata’s Department of Education, Cultural Heritage and Tourism in collaboration with The Piceno Laboratory on the Mediterranean Diet, a local ...
    • Transforming the governance of small-scale fisheries 

      Chuenpagdee, Ratana; Jentoft, Svein (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-05-16)
      Despite their contribution to employment, food security, poverty eradication, and community well-being, small-scale fisheries often find themselves in a disadvantageous position globally relative to large-scale fisheries and other industries competing for marine space, resources, and government attention. By and large, small-scale fisheries are marginalized in every sense of the word: culturally, ...
    • Impacts of salmon lice on mortality, marine migration distance and premature return in sea trout 

      Serra Llinares, Rosa Maria; Bøhn, Thomas; Karlsen, Ørjan; Nilsen, Rune; Freitas, Carla; Albretsen, Jon; Haraldstad, Tormod; Thorstad, Eva Bonsak; Elvik, Kristine Marit Schrøder; Bjørn, Pål Arne (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-02-06)
      Brown trout <i>Salmo trutta</i> (L.) is a facultative anadromous species, where a portion of individuals in populations with access to the sea perform migrations to use the richer feeding resources. We investigated the effect of salmon lice <i>Lepeophtheirus salmonis</i> (Krøyer 1837) infestation on the survival and behaviour of wild trout post-smolts (average fork length = 180 mm) during their ...
    • Growth Strategy of a Rural Business School: Sustainable Implementation of Online Studies 

      Bertheussen, Bernt Arne (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-06-29)
      This case study, which uses interventionist action research methodology, first describes key elements of the online business model which was implemented at a business school in Arctic Norway. The aim of the business model intervention was to create a growth in student influx. Next, the study examines the actual impact of the intervention in terms of number of online applicants over the last decade. ...
    • Temporal trends of persistent organic pollutants in Barents Sea polar bears (Ursus maritimus) in relation to changes in feeding habits and body condition 

      Lippold, Anna; Bourgeon, Sophie; Aars, Jon; Andersen, Magnus; Polder, Anuschka; Lyche, Jan Ludvig; Bytingsvik, Jenny; Jenssen, Bjørn Munro; Derocher, Andrew E.; Welker, Jeffrey Martin; Routti, Heli (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-12-14)
      Temporal trends of persistent organic pollutants (POPs: PCBs, OH-PCBs, <i>p,p′</i>-DDE, HCB, β-HCH, oxychlordane, BDE-47, and 153) in relation to changes in feeding habits and body condition in adult female polar bears (<i>Ursus maritimus</i>) from the Barents Sea subpopulation were examined over 20 years (1997–2017). All 306 samples were collected in the spring (April). Both stable isotope values ...
    • Economic drivers for the Chinese tourists 

      Xie, Jinghua; Tveterås, Sigbjørn Landazuri (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-03-02)
      Asia, particularly China, has become an attractive market that receives much attention in the Norwegian tourism industry. This raises relevant questions about the sustainability of the Chinese tourism boom. If the Norwegian tourism industry increasingly targets this rapidly growing market with larger investments, it should respond to the prospects of long-term growth. Such prospects hinge on the ...
    • Possible Health Effects of a Wax Ester Rich Marine Oil 

      Schots, Pauke C.; Pedersen, Alice Marie; Eilertsen, Karl-Erik; Olsen, Ragnar Ludvig; Larsen, Terje (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-06-26)
      The consumption of seafood and the use of fish oil for the production of nutraceuticals and fish feed have increased over the past decades due the high content of long-chain polyunsaturated omega-3 fatty acids. This increase has put pressure on the sustainability of fisheries. One way to overcome the limited supply of fish oil is to harvest lower in the marine food web. <i>Calanus finmarchicus</i>, ...
    • Arealforvaltning av norsk havbruksnæring. Vurdering av scenarioer i «Havbruksforvaltning 2030» 

      Hersoug, Bjørn; Mikkelsen, Eirik Inge; Robertsen, Roy; Osmundsen, Tonje Cecilie (Research report; Forskningsrapport, 2020-03-13)
      Rapporten er en helhetlig vurdering av mulige grep innen arealforvaltning (arealplanlegging og lokalitetsforvaltning) av havbruk og marine områder for å gjøre areal tilgjengelig for vekst i havbruksnæringen, samtidig som også andre hensyn sikres, og at forvaltningen er tids- og kostnadseffektiv. Hvordan tilgangen på egnede arealer vil bli for næringen fram mot 2030 og videre, vil avhenge av flere ...
    • Investigation of the influence of product variety on inventories in hospitals 

      Aravazhi, Agaraoli; Helgheim, Berit; Jæger, Bjørn (Journal article; Tidsskriftartikkel, 2020-05-10)
      The literature on product variety provides great insights into various businesses. However, little research has been conducted on product variety in the healthcare industry. This study aims to explore the influence of product variety on inventory in hospitals. Since most hospitals are known to replenish products using a homegrown ad-hoc system, a model is developed for exploring all possible ...
    • What feeds the benthos in the Arctic basins? Assembling a carbon budget for the deep Arctic ocean 

      Wiedmann, Ingrid; Ershova, Elizaveta; Bluhm, Bodil; Nöthig, Eva-Maria; Kosobokova, Ksenia; Boetius, Antje; Gradinger, Rolf R. (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-04-16)
      Half of the Arctic Ocean is deep sea (>1000 m), and this area is currently transitioning from being permanently ice-covered to being seasonally ice-free. Despite these drastic changes, it remains unclear how organisms are distributed in the deep Arctic basins, and particularly what feeds them. Here, we summarize data on auto- and heterotrophic organisms in the benthic, pelagic, and sympagic realm ...
    • A novel use of the leukocyte coping capacity assay to assess the immunomodulatory effects of organohalogenated contaminants in avian wildlife 

      Hansen, Elisabeth; Huber, Nikolaus; Bustnes, Jan Ove; Herzke, Dorte; Bårdsen, Bård-Jørgen; Eulaers, Igor; Johnsen, Trond Vidar; Bourgeon, Sophie (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-05)
      Apex predators are characterized by high levels of biomagnifying organohalogenated contaminants (OHCs) which have been found to induce detrimental health effects in wildlife, such as immune system impairment. The leukocyte coping capacity (LCC) assay is a functional real-time measure of an innate immune response essential in pathogen resistance, known as the respiratory burst. The current study ...
    • Quantification of gear inflicted damages on trawl-caught haddock in the Northeast Atlantic fishery 

      Sistiaga, Manu; Herrmann, Bent; Brinkhof, Jesse; Larsen, Roger B.; Jacques, Nadine; Santos, Juan; Gjøsund, Svein Helge (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-06-12)
      External damages are indicators of the overall quality of fish and fish welfare. Haddock is an important commercial species widespread in the North Atlantic, but few studies related to quality have been carried out on this species. We studied the levels of external damages on haddock captured with a demersal trawl in the Northeast Atlantic. Further, we investigated to what extent the compulsory ...
    • Cold Seeps in a Warming Arctic: Insights for Benthic Ecology 

      Åström, Emmelie; Sen, Arunima; Carroll, Michael Leslie; Carroll, JoLynn (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-05-21)
      Cold-seep benthic communities in the Arctic exist at the nexus of two extreme environments; one reflecting the harsh physical extremes of the Arctic environment and another reflecting the chemical extremes and strong environmental gradients associated with seafloor seepage of methane and toxic sulfide-enriched sediments. Recent ecological investigations of cold seeps at numerous locations on the ...
    • Higher spatial than seasonal variation in floodplain soil eukaryotic microbial communities 

      Fournier, Bertrand; Samaritani, Emanuela; Frey, Beat; Seppey, Christophe Victor W.; Lara, Enrique; Heger, Thierry J.; Mitchell, Edward A.D. (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-05-10)
      Beta diversity is a key component of biodiversity with implications ranging from species dynamics to ecosystem functioning. However, β-diversity and its drivers have received little attention, especially for micro-eukaryotes which play key roles in soil functioning. We studied the diversity of soil micro-eukaryotes in a Swiss lowland floodplain using high-throughput Illumina sequencing of soil DNA. ...
    • Stretching the Rule of Law: How the Norwegian resistance movement influenced the provisional treason decrees of the exile government, 1944-1945 

      Borge, Baard Herman; Vaale, Lars-Erik (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-06-16)
      This article examines the role of the Norwegian resistance movement ‘Hjemmefronten’ (the Home Front, HF) as a political interest group during the exile government’s formulation of provisional laws meant for the postwar reckoning with Norwegian collaborators and foreign war criminals. The article argues that the resistance through its judicial committee in Oslo had a decisive impact on the final ...
    • Approaching the Arctic: the occurrence of Parin’s spinyfin Diretmichthys parini (Beryciformes: Diretmidae) in the Nordic Seas 

      Lynghammar, Arve; Byrkjedal, Ingvar; Bugjerde, Berit Margrete; Wienerroither, Rupert (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-04-03)
      Two adult specimens of the tropical to subtropical fish species <i>Diretmichthys parini</i> are reported from the North Sea and the northern Norwegian Sea, respectively. Both were accidentally caught as bycatch by commercial trawlers. Although not uncommon in Icelandic waters, it has not been documented from the Nordic Seas previously. In light of the major currents and water temperatures in the ...
    • Overexpression of T-bet, GATA-3 and TGF-ß induces IFN-γ, IL-4/13A, and IL-17A expression in Atlantic salmon 

      Slettjord, Tiril Hoffstrøm; Sekkenes, Hege J.; Chi, Heng; Bøgwald, Jarl; Swain, Trilochan; Dalmo, Roy Ambli; Swain, Jaya Kumari (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-04-20)
      The overexpression of <i>GATA-3, T-bet</i> and <i>TGF-ß</i> may theoretically induce <i>IL-4/A, IFN-γ</i> and <i>IL-17A</i> expression, respectively. Whether this also applies to fish is not yet known. The plasmid vectors encoding reporter gene (RFP)-tagged <i>T-bet, GATA-3</i> and <i>TGF-ß</i> were used as overexpression tools, transfected into cells or injected intramuscularly to monitor the ...