Fakultet for biovitenskap, fiskeri og økonomi

 

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  • Intracellular distribution and transcriptional regulation of Atlantic salmon (Salmo salar) Rab5c, 7a and 27a homologs by immune stimuli 

    Nepal, Arpita; Wolfson, Deanna; Ahluwalia, Balpreet Singh; Jensen, Ingvill; Jørgensen, Jorunn B; Iliev, Dimitar Borisov (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-01-31)
    Rab GTPases control trafficking of intracellular vesicles and are key regulators of endocytic and secretory pathways. Due to their specific distribution, they may serve as markers for different endolysosomal compartments. Since Rab GTPases are involved in uptake and trafficking of endocytosed ligands and cell receptors, as well as secretion of immune mediators, they have been implicated in diverse ...

  • Growth and behaviour of blue mussels, a re-emerging polar resident, follow a strong annual rhythm shaped by the extreme high Arctic light regime: Mussels' growth and behavior in Arctic 

    Tran, Damien; Andrade Rodriguez, Hector Antonio; Durier, Guillaume; Ciret, Pierre; Leopold, Peter; Sow, Mohamedou; Ballantine, Carl; Camus, Lionel; Berge, Jørgen; Perrigault, Mickael (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-10-14)
    Polar regions are currently warming at a rate above the global average. One issue of concern is the consequences on biodiversity in relation to the Northward latitudinal shift in distribution of temperate species. In the present study, lasting almost two years, we examined two phenological traits, i.e. the shell growth and behavioural rhythm of a recently re-established species in the high Arctic, ...

  • Changes in Sea-Ice Protist Diversity With Declining Sea Ice in the Arctic Ocean From the 1980s to 2010s 

    Hop, Haakon; Vihtakari, Mikko; Bluhm, Bodil; Assmy, Philipp; Poulin, Michel; Gradinger, Rolf; Peeken, Ilka; von Quillfeldt, Cecilie; Olsen, Lasse Mork; Zhitina, Ludmila; Melnikov, Igor A. (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-05-06)
    The large declines in Arctic sea-ice age and extent over the last decades could have altered the diversity of sea-ice associated unicellular eukaryotes (referred to as sea-ice protists). A time series from the Russian ice-drift stations from the 1980s to the 2010s revealed changes in community composition and diversity of sea-ice protists from the Central Arctic Ocean. However, these observations ...

  • The impact of thermal seasonality on terrestrial endotherm food web dynamics: a revision of the Exploitation Ecosystem Hypothesis 

    Oksanen, Tarja Maarit; Oksanen, Lauri; Vuorinen, Katariina; Wolf, Christopher; Mäkynen, Aurelia; Olofsson, Johan; Ripple, William J.; Virtanen, Risto; Utsi, Tove Aagnes (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-09-06)
    Many terrestrial endotherm food webs constitute three trophic level cascades. Others have two trophic level dynamics (food limited herbivores; plants adapted to tackle intense herbivory) or one trophic level dynamic (herbivorous endotherms absent, thus plants compete for the few places where they can survive and grow). According to the Exploitation Ecosystems Hypothesis (EEH), these contrasting ...

  • A risk assessment of the effects of mercury on Baltic Sea, Greater North Sea and North Atlantic wildlife, fish and bivalves 

    Dietz, Rune; Fort, Jérôme; Sonne, Christian; Albert, Céline; Bustnes, Jan Ove; Christensen, Thomas Kjær; Ciesielski, Tomasz Maciej; Danielsen, Jóhannis; Dastnai, Sam; Eens, Marcel; Erikstad, Kjell E; Galatius, Anders; Garbus, Svend-Erik; Gilg, Oliver; Hanssen, Sveinn Are; Helander, Björn; Helberg, Morten; Jaspers, Veerle; Jenssen, Bjørn Munro; Jónsson, Jón Einar; Kauhala, Kaarina; Kolbeinsson, Yann; Kyhn, Line A.; Labansen, Aili Lage; Larsen, Martin M.; Lindstrøm, Ulf; Reiertsen, Tone Kristin; Rigét, Frank F.; Roos, Anna; Strand, Jakob; Strøm, Hallvard; Søndergaard, Jens; Sun, Jiachen; Teilmann, Jonas; Therkildsen, Ole Roland; Thórarinsson, Thorkell Lindberg; Tjørnløv, Rune Skjold; Wilson, Simon; Eulaers, Igor (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-11-24)
    A wide range of species, including marine mammals, seabirds, birds of prey, fish and bivalves, were investigated for potential population health risks resulting from contemporary (post 2000) mercury (Hg) exposure, using novel risk thresholds based on literature and de novo contamination data. The main geographic focus is on the Baltic Sea, while data from the same species in adjacent waters, such ...

  • The impact of nature documentaries on public environmental preferences and willingness to pay: Entropy balancing and the Blue Planet II effect 

    Hynes, Stephen; Yeboah, Isaac-Ankamah; O'Neill, Stephen; Needham, Katherine; Bui, Bich Xuan; Armstrong, Claire (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-11-23)
    In this study, the discrete choice experiment approach was employed in a survey of the Scottish general public to analyze how respondents make tradeoffs between blue growth potential and marine ecosystem service delivery associated with the Mingulay cold water reef complex. Results indicate a higher willingness to pay for management options associated with the highest possible levels of marine litter ...

  • Potential for Sustainable Aquaculture: Insights from Discrete Choice Experiments 

    Bui, Bich Xuân; Sandoft, Erlend (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-08-04)
    The growth in global aquaculture production may address the lack of sustainability in wild fisheries, alleviate poverty in rural and coastal areas, and help meet the worldwide increase in demand for animal protein. However, there is an ongoing debate about the severity of the environmental impact of aquaculture production. Investing in new high-tech production systems can address both productivity ...

  • Læring og vurdering. Om læringsformer, undervisningsformer og bruk av ulike vurderingsformer i høyere utdanning. Evaluering del 2 etter pilotprosjektet UiTspire 

    Schjelde, Tor Jørgen; Bottolfsen, Trond; Korsnes, Lena; Michalsen, Bård Borch (Research report; Forskningsrapport, 2019)
    Dagens studenter viser økt interesse for nye undervisnings- og læringsformer. Noe av forklaringen er økt fokus på 21st Century Skills (Pellegrino & Hilton, 2012) og endrede krav fra arbeidslivet til kunnskap og ferdigheter. Istedenfor lærerstyrt undervisning og tradisjonelle skoleeksamener, så ønsker studentene en mer studentaktiv undervisning og bruk av vurderingsformer som passer i forhold til ...

  • HPI-axis and heat shock protein (HSP) gene transcripts, and their responsiveness to stress in Atlantic salmon (Salmo salar L.) embryos and larvae 

    Andersen, Renate (Master thesis; Mastergradsoppgave, 2015-11-25)
    Exposure to stress may have a profound impact on the physiology and health of an individual later in life. During a production cycle of Atlantic salmon eggs, the eggs are subjected to different kind of handling, e.g. shocking and transport. Handling of this extent would have elicited stress responses in adult fish. Stress responses can broadly be divided into primary, secondary and tertiary response. ...

  • Tap av tamrein – et kunnskapsgrunnlag 

    Hansen, Inger; Eilertsen, Svein Morten; Sørensen, Ole Jakob; Mørk, Torill; Bråthen, Kari Anne; Johansen, Bernt; Moa, Pål Fossland; Risvoll, Camilla; Sandström, Camilla; Winje, Erlend (Research report; Forskningsrapport, 2019-12-30)
    Tap av dyr er en utfordring og et sentralt tema i norsk tamreindrift. Dette kunnskapsgrunnlaget beskriver status for hva vi vet om tapsomfang, tapsårsaker og tapsammenhenger innen områdene tap av rein til rovvilt, sykdom, klimarelatert tap, påkjørsler og grunnet kumulative effekter. Videre setter den fokus på forebyggende tiltak og hvilke felt man trenger ytterligere kunnskapsbygging på. Gjennomgående ...

  • Consumer preference for eco-labelled aquaculture products in Vietnam 

    Bui, Bich Xuân (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-11-01)
    Product labelling with eco-certifications is market-based incentive tool for sustainable aquaculture, thus mitigating negative environmental impacts. The aims of this study are to investigate: i) whether consumers prefer eco-labelled (eco-certified) shrimps over conventional (non-certified) shrimp; and ii) whether consumers prefer specific eco-label (eco-certification logo) over others. The study ...

  • Public Perceptions of Deep-Sea Environment: Evidence from Scotland and Norway 

    Ankamah-Yeboah, Isaac; Xuan, Bui Bich; Hynes, Stephen; Armstrong, Claire W. (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-03-10)
    Knowledge of people's understanding of environmental problems is vital for the effective implementation of the ecosystem approach to marine management. This is especially relevant when conservation goals are aimed at ecosystems in the deep-sea that are remote to the consciousness of most people. This study explores public perceptions of the deep-sea environment among the Scottish and Norwegian public. ...

  • Trading off Tourism and Fisheries 

    Bui, Bich Xuân; Armstrong, Claire W. (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-08-22)
    This paper presents a deterministic bioeconomic model in which the creation of a marine protected area (MPA) is not only a fisheries management tool but also introduced in order to provide tourism amenity benefits. The theoretical model is illustrated with analysis of the Nha Trang Bay (NTB) MPA in Khanh Hoa province in Vietnam, where the anchovy purse seine fishery is considered. An amenity value ...

  • Influence of glacial water and carbonate minerals on wintertime sea-ice biogeochemistry and the CO2 system in an Arctic fjord in Svalbard 

    Fransson, Agneta; Chierici, Melissa; Nomura, Daiki; Granskog, Mats; Kristiansen, Svein; Martma, Tõnu; Nehrke, Gernot (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-08-13)
    The effect of freshwater sources on wintertime sea-ice CO2 processes was studied from the glacier front to the outer Tempelfjorden, Svalbard, in sea ice, glacier ice, brine and snow. March–April 2012 was mild, and the fjord was mainly covered with drift ice, in contrast to the observed thicker fast ice in the colder April 2013. This resulted in different physical and chemical properties of the sea ...

  • Stability of lipids during wet storage of the marine diatom Porosira glacialis under semi-preserved conditions at 4 and 20 °C 

    Dalheim, Lars; Svenning, Jon Brage; Vasskog, Terje; Eilertsen, Hans Christian; Olsen, Ragnar Ludvig (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-10-17)
    Cultivation of diatoms may help alleviate the pressure on wild fish stocks for marine nutrient availability in aquaculture feed and for human consumption. However, the lipids in microalgae biomass are easily deteriorated, both trough lipolysis and degradation of polyunsaturated fatty acids (PUFA). Proper storage conditions are therefore necessary to maintain the lipid quality. Additionally, the ...

  • The effect of long-term use on the Catch efficiency of Biodegradable gillnets 

    Grimaldo, Eduardo; Herrmann, Bent; Jacques, Nadine; Kubowicz, Stephan; Cerbule, Kristine; Su, Biao; Larsen, Roger B.; Vollstad, Jørgen (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-11-05)
    The effect of long-term use on the catch efficiency of biodegradable gillnets was investigated during commercial fishing trials and in controlled lab aging tests. The relative catch efficiency between biodegradable and nylon gillnets was evaluated over three consecutive fishing seasons for Atlantic cod (Gadus morhua) in Norway. The biodegradable gillnets progressively lost catch efficiency over time, ...

  • Troppssjefers legitimitet: Påvirket av en strukturell endring? En kvalitativ studie av troppssjefers legitimitet i forbindelse med implementering av ny personellstruktur i Forsvaret 

    Trones, Stian (Master thesis; Mastergradsoppgave, 2020-05-28)
    Denne oppgaven dreier seg om endringen ny ordning for militært tilsatte har for anseelsen av en nyutdannet troppssjef. Ny ordning for militært tilsatte er en ny personellstruktur som endrer organisering og implementerer en ny utdanningsreform. Organiseringen deler de ansatte i to hovedkategorier; offiseren og spesialisten. Disse har med utdanningsreformen fått andre inngangsverdier til grad, kompetanse ...

  • Utøvelse av religiøst basert ledelse i en virtuell organisering: Fra klan til eksternt motivert kultur 

    Fjellestad, Eirik (Master thesis; Mastergradsoppgave, 2020-05-29)
    Formålet med oppgaven er avdekke hvordan ledelsesdynamikker i en religiøst basert organisasjon påvirkes av en desentralisert virtuell organisering. Oppgaven er en intervjubasert case-studie av en desentralisert hjelpeorganisasjon i et kirkesamfunn som er blitt omstrukturert til en virtuell arbeidsplass, men hvor hver enkelt av de ansatte deler stillingen med ansettelse i en lokal menighet i ...

  • Institutional and financial entry barriers in a fishery 

    Bertheussen, Bernt Arne; Dreyer, Bent; Hermansen, Øystein; Isaksen, John Roald (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-11-18)
    Fishery policies over the past decades have mainly aimed at capacity reduction to preserve overexploited stocks. For that reason, research has focused on exploring incentives to exit fisheries rather than examining entry barriers. However, in quota-regulated fisheries, potential entrants might face substantial institutional and financial barriers, as opposed to incumbents, whose rights might have ...

  • Rådmannsavganger med sluttpakker i små norske kommuner 2014 – 2018. En studie av ledelsesutfordringer i små norske kommuner 

    Gaino, Anne-Marie (Master thesis; Mastergradsoppgave, 2020-05-29)
    Kommuner er politisk styrte organisasjoner og forutsetningen for en velfungerende kommune er at samhandlingen mellom politikk og administrasjon fungerer godt. Dessverre har utviklingen i rådmannsavganger økt drastisk de senere årene. Ca. 80 rådmenn slutter årlig i norske kommuner og rundt 25-35% av disse går av med sluttpakke. Denne masteroppgaven er en studie av ledelsesutfordringer i små norske ...

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