Now showing items 101-120 of 5555

    • Biologiske kostnaders innvirkning på prestasjonsmålinger i lakseoppdrettsnæringen 

      Olsen, Malene; Strand, Jenny Karine (Master thesis; Mastergradsoppgave, 2024-05-31)
      Norge er verdensledende innen oppdrett av laks og står for over halvparten av den globale produksjonen. Økte produksjonskostnader gjør imidlertid den norske lakseoppdrettsnæringen sårbar for negative etterspørsels- og tilbudssjokk, og denne studien analyserer hvordan biologiske utfordringer har påvirket næringens prestasjonsmålinger i perioden 2015 til 2022. Datagrunnlaget er innhentet fra ...
    • Innovativ offentlig anskaffelse i et sluttbrukerperspektiv: sammenhengen mellom deltagerinteraksjon, kompleksitet og innovasjon 

      Sverre, Frederik Fremming Anderssen (Master thesis; Mastergradsoppgave, 2024-05-31)
      Den offentlige sektoren gir uttrykk for et behov for økt samarbeid, og legger i stadig større grad vekt på tiltak som fremhever intern og ekstern samhandling. Dette er en utvikling som motiveres av den offentlige sektorens tilretteleggende rolle, og et ønske om å styrke evnen til å håndtere større samfunnsutfordringer. I denne forbindelse presiseres det at den offentlige virksomhetens innsats må ...
    • Overgangen til et nytt rapporteringsregime, fra GRI til ESRS 

      Stokmo, Sondre Paulsen; Isaksen, Marie Emilie Andersen (Master thesis; Mastergradsoppgave, 2024-05-30)
      Bærekraftsrapportering er komplekst og utfordrende for virksomheter. Denne kompleksiteten har vært forsøkt forenklet og standardisert gjennom flere frivillige tiltak. Et av disse er blant annet standarden for bærekraftsrapportering, GRI. Nå har EU satt egne føringer for hvordan bærekraftsrapportering skal gjennomføres gjennom direktivet CSRD og den tilknyttede standarden ESRS. Sentralt i direktivet ...
    • Hvordan påvirker Sparebank 1 Nord-Norge kundenes lojalitet? Betydningen av CSR, serviceverdi og individuelle forhold 

      Dørmænen, Birgitte (Master thesis; Mastergradsoppgave, 2024-06-02)
      Sammendrag Formålet med denne oppgaven er å undersøke hvordan SpareBank 1 Nord-Norges Samfunnsløftet påvirker kundenes vurdering av bankens samfunnsansvar og deres lojalitet. Fokuset er å identifisere hvilke faktorer som former disse vurderingene, og hvordan banken kan styrke relasjonen til kundene gjennom sitt samfunnsansvar. Ved å integrere teorier om kundelojalitet, CSR, kundetilfredshet, ...
    • Hvordan vil en ny teknologisk tidsalder påvirke regnskapsbransjen? 

      Olsen, Mariel Sofie Nymo; Ingebrigtsen, Ivar (Master thesis; Mastergradsoppgave, 2024-05-27)
      Kunstig intelligens har blitt en fremvoksende kraft og vi ser teknologiske fremskritt i et raskt tempo i dagens samfunn. Flere og flere arbeidsoppgaver innenfor regnskapsbransjen blir automatisert i dag som følge av kunstig intelligens. Enkelte er bekymret for at regnskapsarbeid vil bli overflødig og erstattet av maskiner. Regnskapsførerens evne til å tilpasse seg en ny teknologisk hverdag vil være ...
    • Konseptbeskrivelse for bærekrafts-rapportering i FiskInfoPlattformen 

      Stav, Erlend; Auran, Per Gunnar; Sønvisen, Signe Annie; Hanssen, Bård; Andreassen, Kim Hartvedt (Research report; Forskningsrapport, 2024-12-19)
      Denne rapporten utreder konseptet FiskInfoPlattformen: en digital plattform for fangst og bærekraftsrapportering basert på operasjonell datafangst under fiske. Arbeidet har tatt utgangspunkt i grunnstammen i veikartet for databaserte fiskeritjenester som ble etablert i FHF prosjekt 901803 og er første steg i å utvide dette med nødvendig dataflyt for å støtte bærekraftsrapportering. FNs bærekraftsmål ...
    • Biogenic dietary promoters in aquaculture: nature-based solutions for enhancing growth, health, and sustainability 

      Vijayaram, Srirengaraj; Mahendran, Karthikeyan; Ringø, Einar; Razafindralambo, Hary; Kannan, Suruli; Sun, Yun Zhang (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-11-27)
      Aquaculture, as a rapidly expanding global industry, is increasingly challenged by both infectious and non-infectious diseases, posing significant threats to fish health and production. Traditional interventions, such as antibiotics and vaccines, though effective, raise concerns regarding environmental impact and the potential for resistance development. This review explores the promising role of ...
    • Synergy and competition during the anaerobic degradation of N-acetylglucosamine in a methane-emitting, subarctic, pH-neutral fen 

      Kujala, Katharina; Schmidt, Oliver; Horn, Marcus A. (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-12-11)
      Peatlands are invaluable but threatened ecosystems that store huge amounts of organic carbon globally and emit the greenhouse gasses carbon dioxide (CO<sub>2</sub>) and methane (CH<sub>4</sub>). Trophic interactions of microbial groups essential for methanogenesis are poorly understood in such systems, despite their importance. Thus, the present study aimed at unraveling trophic interactions between ...
    • Transcriptionally distinct B cell profiles in systemic immune tissues and peritoneal cavity of Atlantic salmon (Salmo salar) infected with salmonid alphavirus subtype 3 

      Jenberie, Shiferaw; Sandve, Simen Rød; To, Thu-Hien; Kent, Matthew Peter; Rimstad, Espen; Jørgensen, Jorunn B; Jensen, Ingvill (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-12-03)
      Teleost B cells producing neutralizing antibodies contribute to protection against salmonid alphavirus (SAV) infection, the etiological agent of pancreas disease, thereby reducing mortality and disease severity. Our previous studies show differences in B cell responses between the systemic immune tissues (head kidney (HK) and spleen) and the peritoneal cavity (PerC) after intraperitoneal SAV3 ...
    • Promising Probiotic Candidates for Sustainable Aquaculture: An Updated Review 

      Hoseinifar, Seyed Hossein; Faheem, Mehwish; Liaqat, Iram; Van Doan, Hien; Ghosh, Koushik; Ringø, Einar (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-12-17)
      With the intensification of aquaculture to meet the rising demands of fish and shellfish, disease outbreaks during the larval and adult stages are a major challenge faced by aqua culturists. As the prophylactic use of vaccines and antibiotics has several limitations, research is now focused on sustainable alternatives to vaccines and antibiotics, e.g., medicinal plants, probiotics, postbiotics, ...
    • No Sign of Homogenisation in Reef Fish Communities Across an Ecological Transition Zone Exposed to Warming 

      Silva, Fernanda C.; Quimbayo, Juan P.; Spanheeden Dencker, Tim; Pecuchet, Laurene Anne Marie; Floeter, Sergio R.; Lindegren, Martin (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-11-28)
      Aim: Marine organisms are responding to warming by altering their distribution ranges, causing biogeographic range shifts and in some cases, favouring the community homogenisation. Transition zones can act as natural laboratories to explore the consequences of homogenisation. However, these habitats are relatively poorly studied in coastal areas. In this study, we aimed to investigate biotic ...
    • Quality parameters and storage stability of the Norwegian red sea cucumber (Parastichopus tremulus) 

      Vu, Dat Trong; Tsoukalas, Dionysios; Jakobsen, Anita Nordeng; Falch, Eva; Haugen, John-Erik; Jensen, Ida-Johanne (Journal article; Tidsskriftartikkel; Peer reviewed, 2025-01-03)
      Quality parameters and storage stability were evaluated through biochemical, textural, and microbial analyses of the Norwegian red sea cucumber Parastichopus tremulus at two different storage temperatures (0 °C and 4 °C) over 17 days. During storage, the pH decreased from 7 to 6.3, the texture became softer decreasing from 47.3 to 0.3 N, while K-value increased from 4 to 52 %, microbial counts ...
    • Seroprevalence and risk factors of brucellosis in pastoralists and their livestock in Central Equatoria State, South Sudan 

      Lita, Emmanuel P.; Ochi, Erneo B.; Misinzo, Gerald; van Heerden, Henriette; Katani, Robab; Godfroid, Jacques Xavier Leon; Mathew, Coletha (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-12-19)
      Background Brucellosis poses serious public health implications and substantial economic losses in pastoral rural settings in South Sudan. In humans, brucellosis is almost always originating from animals. Current literature provides scant data regarding the seroprevalence of brucellosis in South Sudan. This cross-sectional study investigates the seroprevalence of brucellosis among the pastoral ...
    • Eksamen og vurdering 24 - Sluttrapport fra arbeidsgruppe ved NTNU 

      Torvatn, Tim Kristian Andreas; Dahl, Martha Torgeirdatter; Stock, Ingrid; Hjelle, Arild Sørum; Kjærland, Frode; Langbakk, Erik Ingve; Rønning, Vegard; Sindre, Guttorm; Solbjørg, Ole Kristen (Research report; Forskningsrapport, 2024-12-03)
    • Contrasting two major Arctic coastal polynyas: the role of sea ice in driving diel vertical migrations of zooplankton in the Laptev and Beaufort seas 

      Dmitrenko, Igor A.; Petrusevich, Vladislav; Preußer, Andreas; Kosobokova, Ksenia; Bouchard, Caroline; Geoffroy, Maxime; Komarov, Alexander S.; Babb, David G.; Kirillov, Sergei A.; Barber, David G. (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-12-17)
      The diel vertical migration (DVM) of zooplankton is one of the largest species migrations to occur globally and is a key driver of regional ecosystems and the marine carbon pump. Previously thought to be hampered by the extreme light regime prevailing in the Arctic Ocean, observations have revealed that DVM does occur in ice-covered Arctic waters and suggest the decline in Arctic sea ice may thereby ...
    • Seasonal changes in the feeding aggregation structure of male sperm whales (Physeter macrocephalus) in Northern Norway 

      Morange, Zoë Luccia Juliette; Similä, Tiu; Rikardsen, Audun H.; Blanchet, Marie-Anne (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-12-25)
      The sperm whale (Physeter macrocephalus) is one of the most widely distributed cetaceans. Adult males commonly occupy high latitudes, whereas females and juveniles occupy lower latitudes. In Northern Norway, previous studies focused on the summer period limiting our understanding of the seasonal dynamics of male foraging aggregations. We used year-round capture–mark–recapture data based on photo ...
    • Differential regulation of magnesium transporters Slc41, Cnnm and Trpm6-7 in the kidney of salmonids may represent evolutionary adaptations to high salinity environments 

      Takvam, Marius; Denker, Elsa; Gharbi, Naouel; Tronci, Valentina; Kolarevic, Jelena; Nilsen, Tom Ole (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-11-29)
      Magnesium is important for enzymatic reactions and physiological functions, and its intracellular concentration is tightly regulated. Atlantic salmon has the ability to handle large changes in environmental Mg<sup>2+</sup> concentration when migrating between freshwater and seawater habitats, making it a relevant model to investigate Mg<sup>2+</sup> homeostasis. Parr-smolt transformation (PST) is ...
    • Price transmission and asymmetry in a changing seafood supply chain 

      Kidane, Dejene Gizaw (Journal article; Tidsskriftartikkel; Peer reviewed, 2025-01-08)
      This study investigates price transmission and asymmetry in the cod value chain between the export market of Norway and the retail market of Portugal. Using monthly data from January 2011 to December 2022, it analyzes the value chains of salted dried cod, salted wet cod, and the relationship between the export price of salted wet cod and the retail price of salted dried cod using a non-linear ARDL ...
    • Takvatnprosjektet – vellykket samarbeid mellom forskere og fiskeentusiaster 

      Amundsen, Per-Arne; Knudsen, Rune; Kristoffersen, Roar; Henriksen, Eirik H.; Smalås, Aslak; Primicerio, Raul; Johannessen, Karin Strand; Bye, Cesilie; DalsbØ, laina h; Klemetsen, Anders (Journal article; Tidsskriftartikkel; Peer reviewed, 2024)
      Overbefolka fiskebestander er et stort problem i mange innsjøer, særlig for røye, ørret, abbor og sik. Kjennetegnet er småvokst og mager fisk, gjerne med høy infeksjon av parasitter. Som et potensielt botemiddel ble et storstilt uttynningsfiske med teiner iverksatt i Takvatn (15 km2), Troms, på 1980-tallet. I nært samarbeid mellom forskere, grunneiere og fiskere ble 700.000 smårøye (31.3 tonn) tatt ...
    • Extreme mismatch between phytoplankton and grazers during Arctic spring blooms and consequences for the pelagic food-web 

      Renaud, Paul Eric; Daase, Malin Hildegard Elisabeth; Leu, Eva Susanne; Geoffroy, Maxime; Basedow, Sünnje Linnéa; Inall, Mark; Campbell, Karley Lynn; Trudnowska, Emilia; Sandbank, Einat; Cnossen, Frida Anneke; Dunn, Muriel Barbara; Camus, Lionel; Porter, Marie; Aune, Magnus; Gradinger, Rolf Rudolf (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-10-13)
      Food-web structure determines the cycling pathways and fate of new production in marine ecosystems. Herbivorous zooplankton populations are usually seasonally coupled with pelagic primary producers. Synchrony of phytoplankton blooms with reproduction, recruitment and seasonal ascent of their main grazers ensures efficient transfer of organic carbon to higher trophic levels, including commercially ...