Viser treff 801-820 av 1579

    • 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 ...
    • Domestic cats (Felis catus) in Denmark have increased significantly in size since the Viking Age 

      Bitz-Thorsen, Julie; Gotfredsen, Anne Birgitte (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-12-03)
      The earliest finds of domestic cat in Denmark date back to the Roman Iron Age (c. 1–375 AD). Initially, cats occurred sparsely and only from the Viking Age (c. 850–1050 AD) did they become more frequent in numbers, though primarily in urban contexts and in connection with fur production. In medieval times, cats became beasts of pest control in rural settlements, manorial estates as well as in the ...
    • Valuing blue carbon changes in the Arctic ocean 

      Armstrong, Claire W.; Foley, Naomi; Slagstad, Dag; Chierici, Melissa; Ellingsen, Ingrid H.; Reigstad, Marit (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-06-25)
      The ocean capacity to store carbon is crucial, and currently absorbs about 25% CO<sub>2</sub> supply to the atmosphere. The ability to store carbon has an economic value, but such estimates are not common for ocean environments, and not yet estimated for the Arctic Ocean. With the severe climatic changes in the Arctic Ocean, impacting sea ice and potentially the vertical carbon transport mechanisms, ...
    • Cold seawater induces early sexual developmental stages in the BPG axis of European eel males 

      Rozenfeld, Christoffer; García-Carpintero, Victor; Pérez, Luz; Gallego, Victor; Herranz-Jusdado, Juan Germán; Tveiten, Helge; Johnsen, Helge K.; Fontaine, Romain David; Weltzien, Finn-Arne; Cañizares, Joaquín; Asturiano, Juan F.; Penaranda, David Sanchez (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-07-22)
      <i>Background</i>: The impossibility of closing the life cycle of the European eel (<i>Anguilla anguilla</i>) in captivity troubles the future of this critically endangered species. In addition, the European eel is a highly valued and demanded resource, thus the successful closing of its life cycle would have a substantial economic and ecological impact. With the aim of obtaining the highest ...
    • Large volume cryopreservation of lumpfish (Cyclopterus lumpus L.) sperm for commercial hatchery production 

      Opeifa, Bamidele Theophilus (Master thesis; Mastergradsoppgave, 2019-06-03)
      The growing Atlantic salmon (Salmo salar) aquaculture production is confronted with many challenges that limit the potential development of the industry. The major current problem threatening the salmon aquaculture production is the parasitic sea lice (Lepeophtheirus salmonis) that negatively affects both cultured salmon and wild stock populations. Several treatment options have failed to deliver ...
    • Seeking to legitimize: Social sustainability and legitimacy in the Traffic Light System 

      Vik, Christian (Master thesis; Mastergradsoppgave, 2019-05-15)
      Over the last 50 years, the management needs of the Norwegian aquaculture industry have become increasingly complex. The stakeholders in the management vary diversely from environmental agencies and NGOs, to local and national governmental bodies, to those operating the farms themselves. Consequently, the establishment of the Traffic Light System as a management tool has been a long and challenging ...
    • Antimikrobielle forbindelser i sjøstjernen Asterias rubens og sjøpølsen Cucumaria frondosa. 

      Siiri, Sebastian Reidar Barriteau (Master thesis; Mastergradsoppgave, 2019-05-15)
      Det er en økende bekymring for at antibiotikaene vi har tilgjengelige i dag ikke vil være effektive mot humane patogener grunnet resistensutvikling. WHO har uttalt at en pre-antibiotika tid der vanlige infeksjoner og mindre skader kan drepe, er en reell virkelighet i det 21. århundre. Havet dekker over 70% av jordoverflaten, og det er estimert at mellom 50 og 80% av alle arter lever i havet. Organismer ...
    • Havfarm 3: Governmentally driven innovations in Norwegian aquaculture. A challenge for the governing system? 

      Jensen, Daniel (Master thesis; Mastergradsoppgave, 2019-05-15)
      The Norwegian aquaculture industry is today experiencing increasing demands of Atlantic salmon (Salmo salar L.) from global markets. However, past years has not seen the same rise in production as in value. In a time where several area and environmental-related challenges are hindering further growth of the Norwegian aquaculture industry, the development licenses have become the latest licensing ...
    • Implementation of the Traffic Light System in Norwegian salmon aquaculture - success or failure for whom? 

      Michaelsen-Svendsen, Bjørnar (Master thesis; Mastergradsoppgave, 2019-05-15)
      Since Norwegian Atlantic salmon aquaculture developed into a viable industry in the 1960s, it has grown into one of Norway’s most important sectors. A crucial factor influencing this growth has been the development of a management system which has facilitated the growth in an advantageous way. In the latter part of 2017, a new aquaculture management system started, called the Traffic Light System. ...
    • Rising temperatures in a subarctic lake lead to increased somatic growth rates for Arctic charr (Salvelinus alpinus, (L.)) 

      Kotowych, Nicholas Volodya (Master thesis; Mastergradsoppgave, 2019-05-15)
      Cold water species living at high latitudes are expected to respond rapidly to climate change due to their sensitivity to increasing temperature. Water temperature strongly affects the ecology of fish, influencing food intake and conversion, and ultimately somatic growth rate. In a lake, somatic growth rates will also be contingent on food availability, which is negatively affected by fish abundance. ...
    • Normalhistologi hos oppdrettet rognkjeks (Cyclopterus lumpus L.). Med fokus på organene hud, gjeller, hjerte, nyre, milt, pankreas og lever 

      Klingenberg, Oda (Master thesis; Mastergradsoppgave, 2019-05-15)
      Lumpfish (Cylcopterus lumpus) is increasingly used as cleaner fish in intensive farming of Atlantic salmon (Salmo salar) with an aim to control the infection of lice on the salmon. The lumpfish is itself exposed to a number of infections, both bacterial, viral, parasitic and fungal, and there is still a lack of knowledge regarding these infections and their impact on the fish. In order to assess the ...
    • Institutional aspects of the fisheries management among the Sami people living in the Murmansk region 

      Osokina, Marianna (Master thesis; Mastergradsoppgave, 2019-05-15)
      This master thesis will consider the institutional aspects of traditional fisheries regulation among the small Indigenous minorities of the North, Siberia and the Far East of Russia, using the Kola Sámi settled in Murmansk region as case. The thesis studies the potential for influence of local institutions on the traditional fisheries management. Based on documents and internet sources the thesis ...
    • Fôrbasert kontra lysstimulert smoltifisering av Atlantisk laks (Salmo salar L.). Effekten av smoltifiseringsregime på smoltutvikling og immunstatus i ferskvann, samt vekst og mottakelighet for infeksiøs lakseanemi (ILA) etter sjøsetting 

      Ellingsen, Bjørn (Master thesis; Mastergradsoppgave, 2019-05-14)
      Målsetningen med dette forsøket var å studere smoltutvikling, samt immunstatus og mottakelighet for sykdom etter utsett i sjø hos Atlantisk laks (Salmo salar L.) smoltifisert ved endring i fotoperiode eller ved bruk av fôr. Før og etter endt smoltstimulering ble fisk injisert med en multikomponent vaksine for å kvantifisere immunrespons i relasjon til smoltutvikling. Etter overføring til sjøvann ble ...
    • Lys- og saltbehandling av to størrelsesgrupper lakseunger (Salmo salar L.). Smoltifisering i ferskvann og prestasjon i sjøvann. 

      Engen Lauritzen, Daniel (Master thesis; Mastergradsoppgave, 2019-05-14)
      Nye metoder for å smoltifisere lakseunger er stadig vanligere. Den klassiske metoden er å regulere daglengde for å simulere en naturlig sesongrytme, mens det i dag blir vanligere å tilføre salt i ferskvann- og/eller fôr for å stimulere smoltifisering. Samtidig vil aktører ha settefiskperioden lengere slik at smolten er større ved utsett. Bruk av disse metodene anses å bidra til raskere smoltifisering, ...
    • Expression of Secondary Metabolite Gene Clusters and Production of Secondary Metabolites in Three Nostoc strains Subjected to Deprivation on Nutrients and Competition 

      Wilhelmsen, Oda Sofie Bye (Master thesis; Mastergradsoppgave, 2019-05-15)
      Cyanobacteria are a unique source of natural products, where most of them are synthesized by non-ribosomal peptide synthase, polyketide synthase, or a hybrid of these pathways. The identification of such biosynthetic genes responsible for the production of secondary metabolites is still a relatively unexplored area, and it remains many natural products for which a biosynthetic origin is unknown. ...
    • The Norwegian Snow Crab Industry. A case study of opportunities and threats in the Norwegian snow crab industry 

      Ruiken, Ida Maria (Master thesis; Mastergradsoppgave, 2019-05-15)
      The Norwegian seafood industry is constantly growing and expanding. The snow crab entering the Barents Sea was an opportunity to create a new, profitable industry with a product well established on the world market. Norwegian vessels entered the loophole and were joined by foreign vessels to catch snow crab. January 2017, Russia claimed sovereignty over the area and closed it for all foreign ...
    • Kvalitet av ensilasje og ensilasjeprodukter fra restråstoff etter sløying av torsk og laks 

      Guneriussen, Thomas (Master thesis; Mastergradsoppgave, 2018-11-30)
      Nesten halvparten (314 000 tonn) av restråstoff i norsk fiskeri- og havbruksnæring ble i 2016 konservert med ensilering. Dette er en enkel, veletablert og lønnsom teknologi. Fra ensilasjen kan det utvinnes proteinhydrolysat og olje som kan brukes i fôr til gris, kylling og oppdrettsfisk. Slik utnyttelse av restråstoff bidrar til matproduksjon og er et viktig eksempel på sirkulær bioøkonomi. Forskning ...
    • An interdisciplinary insight into the human dimension in fisheries models. A systematic literature review in a European Union context 

      Weber, Charlotte Teresa; Borit, Melania; Aschan, Michaela (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-07-02)
      Fisheries are complex adaptive social-ecological systems (SES) that consist of interlinked human and ecosystems. They have mainly been studied by the natural sciences and focused on the ecosystem. However, rising concerns about sustainability and increasing complexity of societal challenges often require an understanding of fisheries in a SES context. For this purpose, the study of the human ...
    • Interdisciplinary optimism? Sentiment analysis of Twitter data 

      Weber, Charlotte Teresa; Syed, Shaheen (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-07-31)
      Interdisciplinary research has faced many challenges, including institutional, cultural and practical ones, while it has also been reported as a ‘career risk’ and even ‘career suicide’ for researchers pursuing such an education and approach. Yet, the propagation of challenges and risks can easily lead to a feeling of anxiety and disempowerment in researchers, which we think is counterproductive to ...
    • 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 ...