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  • Live-storage of wild mature cod (Gadus morhua L.) without feed supply. Effects on biological and quality properties 

    Ageeva, Tatiana N. (Doctoral thesis; Doktorgradsavhandling, 2018-09-28)
    The overall aim of this work was to obtain better understanding of how live-storage without feeding affects wild mature Atlantic cod (Gadus morhua L.) and quality of products obtained from such cod. Atlantic cod were live-stored without feeding for 82 days. First, gender-specific weight changes in both whole and gutted fish, as well as certain organs were studied (Paper I). Next, the effects of feed ...
  • Ocean migration of Atlantic salmon 

    Strøm, John Fredrik (Doctoral thesis; Doktorgradsavhandling, 2018-09-14)
    Atlantic salmon is experiencing population declines throughout most parts of its distribution range, with changes in the marine environment considered important contributors to the overall decline. Most of the current knowledge about Atlantic salmon’s ocean distribution originates from mark-recapture and genetic studies associated with high-sea fisheries and sampling surveys, and therefore, little ...
  • Anti-inflammatory, antioxidative and anti-atherogenic bioactivity in marine sources ascribed to nonlipid constituents 

    Walquist, Mari Johannessen (Doctoral thesis; Doktorgradsavhandling, 2018-08-31)
    Cardiovascular disease (CVD) has been, and continues to be, one of the main causes of global deaths. For decades, fish consumption has been acknowledged to reduce the risk of CVD, especially omega-3 fatty acids are known to have anti-inflammatory properties. Still, there are indications that beneficial effects are not limited to fatty acids alone. In this study, the bioactivity in marine sources ...
  • Feeding and fasting in Arctic charr (Salvelinus alpinus (Linnaeus, 1758)): Central regulation of food intake in a highly seasonal fish species 

    Striberny, Anja (Doctoral thesis; Doktorgradsavhandling, 2018-05-22)
    Central control mechanisms of food intake vary between different fish species. Few studies have investigated the role of central appetite regulators in fish species that show natural seasonal variations in food intake. Yet, seasonal fishes are particularly interesting because their potential seasonally sliding set-points in appetite and energy homeostasis may reveal new information about the ...
  • Niche construction across climate gradients: the case of Empetrum nigrum in tundra plant communities 

    Tevendale, Victoria González (Doctoral thesis; Doktorgradsavhandling, 2018-06-08)
    Here we studied at relevant spatial and temporal scales, how the evergreen dwarf shrub Empetrum nigrum, through its niche constructor ability, affects tundra plant communities along climatic gradients. Empetrum is a common dwarf shrub which is particularly abundant in many tundra ecosystems. As a niche constructor is has strong influence on many ecosystem processes and its direct effects can last ...
  • Local support for biodiversity conservation in community-based protected area governance 

    Engen, Sigrid (Doctoral thesis; Doktorgradsavhandling, 2018-06-13)
    Worldwide there have been many attempts to implement community-based conservation to gain a more inclusive protection of biological diversity. Reducing human pressures on ecosystems is necessary for favorable ecological outcomes of protected areas, but conservation initiatives that rely on strict enforcement without local support are vulnerable to rule-violations, public protests and a reduced ...
  • Indulging in Premium versus Luxury products: Seeking justification to avoid regrets 

    Lyons, Sarah Joy (Doctoral thesis; Doktorgradsavhandling, 2018-05-22)
    The demand for premium products is expanding across saturated markets, such as food and beverages. Premium products stand out on the store shelf because they signal higher quality and exclusivity with their fine product packaging, higher prices, and selective distribution. Despite the growing consumer demand for these products, and acknowledgments in the literature that the lines between luxury and ...
  • Exploring social influences on children’s food attitudes and consumption 

    Alm, Siril (Doctoral thesis; Doktorgradsavhandling, 2015-06-27)
    Purpose: In light of the increasing numbers of overweight children observed today who follow inadequate diets, this dissertation mainly explored how children are socialised as food consumers. An additional purpose was to explore the advantages of using participatory photo interviews while researching children’s attitudes and behavioural patterns with respect to two food contexts, namely, lunch in ...
  • Å temme torsken – fremveksten av norsk torskeoppdrettsnæring. En beretning om kollektivt entreprenørskap 

    Enoksen, Ken Harald (Doctoral thesis; Doktorgradsavhandling, 2018-03-19)
    Det overordnede tema for avhandlingen er fremveksten av nye næringer. Gjennom å analysere historien om norsk torskeoppdrett, fra de første ideer om torskeoppdrett oppstod frem til etableringen av verdens første børsnoterte torskeoppdrettsselskap - Codfarmers med tickeren "COD" på Oslo børs – bidrar avhandlingen med ny kunnskap til det «kunnskaps-hullet» som eksisterer innenfor feltet nye/gryende ...
  • Just Like Putting Scissors to a Market - Investigating Supply and Demand Relations of Farmed Atlantic Salmon 

    Thyholdt, Sverre Braathen (Doctoral thesis; Doktorgradsavhandling, 2015-06-17)
    Price and quantity numbers, which we are observing in a market place, occur because of an interaction between supply and demand. An understanding of what drives supply and demand is therefore important in order to understand the market in itself. This dissertation focuses on determining the impact of exogenous factors on salmon biomass growth and how producers respond to price changes. Furthermore, ...
  • Antibacterial and anti-biofilm activity of novel marine natural product mimics 

    Mishchenko, Ekaterina (Doctoral thesis; Doktorgradsavhandling, 2017-01-20)
    Infectious diseases represent an urgent public health problem globally. Particularly healthcare-associated infections are often complicated by antibiotic resistance and presence of recalcitrant microbial biofilms. On the hunt for effective antibiotics with novel mechanisms of action (MOA), researchers look into largely unexplored natural environments with high biodiversity like the oceans, rich in ...
  • Challenges for ice-associated top trophic Arctic animals in a changing climate 

    Hamilton, Charmain Danielle (Doctoral thesis; Doktorgradsavhandling, 2017-02-17)
    The Arctic is currently in a rapid state of change, with temperature increases in this region being three times the rate of the global average and sea-ice extent declining rapidly. In 2006, a sudden shift in the sea-ice regime in Svalbard, Norway, occurred with the altered sea-ice conditions persisting to the present day. In order to study the impacts of the environmental changes occurring in the ...
  • Endogenous sharing of knowledge 

    Heen, Eirik Eriksen (Doctoral thesis; Doktorgradsavhandling, 2017-12-13)
    This thesis investigates the willingness of firms to cooperate on Research and Development (R&D). I present three papers concerning incentives to share/exchange knowledge created by the firms’ own R&D. It is my hope that this thesis can give some clues of how sharing and exchange of knowledge can contribute to an already large literature on Research and Development.
  • Seasonal and spatial dynamics of meroplankton in a sub-Arctic fjord With additional focus on larvae of the invasive red king crab 

    Michelsen, Helena Kling (Doctoral thesis; Doktorgradsavhandling, 2017-12-07)
    Many benthic marine organisms produce pelagic larvae, meroplankton, which spend from hours to months in the pelagic. During this time, they form an important part of the pelagic community. Few studies have focused on the year round dynamics of meroplankton, thus many aspects of meroplankton dynamics remains unknown at high-latitudes. In the 1960s the red king crab was intentionally introduced into ...
  • The influence of product, contextual and individual characteristics on food evaluation 

    Heide, Morten (Doctoral thesis; Doktorgradsavhandling, 2017-11-04)
    The overall objective of this thesis is to provide insights with regard to how characteristics of the product, the context and the individual relate to consumer evaluation of food products. This thesis considered evaluation of food as a global attitude and as an evaluation of various attributes as expectations or experiences, and explore how evaluation is influenced by product, contextual and ...
  • The impact of audit oversight in Norway: International collaboration and audit quality 

    Stenvold, Tine Degerstrøm (Doctoral thesis; Doktorgradsavhandling, 2017-09-22)
    The purpose of this thesis is to explore the nature of the audit oversight system and examples of national and international collaboration by means of a joint inspection process between the Public Company Accounting Oversight Board (PCAOB) of the United States and the Financial Supervisory Authority of Norway (FSA). In addition, the thesis will analyze literature regarding how auditors detect fraud ...
  • Topics on market microstructure and asset pricing using intraday data from the Oslo stock market. 

    Dinh, Minh Thi Hong (Doctoral thesis; Doktorgradsavhandling, 2017-08-23)
    What drives asset prices in the financial market? How can we predict these prices? Finding the relationship between different factors or between different variables could help to answer these questions. First, links between asset pricing models and other market microstructure variables can be used to investigate sources to explain asset prices. Second, rapid changes in the microstructure ...
  • "Navigare necesse est". Bio Environmental implications of shipping in the European Arctic 

    Larsen, Lars-Henrik (Doctoral thesis; Doktorgradsavhandling, 2017-06-08)
    Ocean shipping has for centuries been essential to mankind, and is the most efficient way of transporting goods across the world. With increasing global temperatures, the Arctic ice cap is reduced in thickness and extent, making Arctic shipping more feasible. The thesis looks into the biological and environmental implications of shipping in the European Arctic Seas. A scenario involving a shipping ...
  • Gut metagenomics in relation to diet and methanogenesis in arctic herbivores 

    Salgado, Alejandro Flores (Doctoral thesis; Doktorgradsavhandling, 2017-06-01)
    Enteric methane (CH4) from gut microbial fermentation of complex organic polymers in ruminants comprises an important source of the anthropogenic CH4 emissions and may also represent a significant loss of metabolic energy to the host animal depending on diet. CH4 is produced by specialized microbes called methanogens. Extensive research exists on enteric CH4 production and methanogens in domestic ...
  • Understanding winter patterns of zooplankton Diel Vertical Migration (DVM) in a high Arctic fjord (Kongsfjorden, Svalbard) 

    Grenvald, Julie Cornelius (Doctoral thesis; Doktorgradsavhandling, 2017-05-09)
    Recent Arctic studies contradict a long-held paradigm of winter quiescence by documenting activity at many trophic levels in the marine food web even during the darkest months of winter. Previous studies have failed to identify which species are performing patterns of vertical migrations during polar night in Kongsfjorden (Svalbard). In the present study, acoustic data supplemented by zooplankton ...

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