Recent additions

  • Let it glow! Adapting a method to detect microplastics in snow and evaluate the potential for long-range transport 

    Stürzinger, Vegard (Master thesis; Mastergradsoppgave, 2020-05-31)
    Harmonization of methods in microplastics research is lacking; this is affecting the comparability of results and hindering reproducibility. Investigating microplastics in snow is a relatively new field of research, and it can be used to answer questions about long-range atmospheric transport of microplastics. In this thesis, snow sampling methods were combined with the dye, Nile Red, to develop a ...
  • Spring sea ice algal development in the sub-Arctic Ramfjorden, northern Norway 

    Persson, Emma (Master thesis; Mastergradsoppgave, 2020-05-29)
    The seasonal development of sea ice algae and bacteria was investigated in Ramfjorden, Norway, from February to April 2019 and compared to data from two Arctic fjords, Van Mijenfjorden and Billefjorden, sampled in April 2019. The sea ice in Ramfjorden was heavily freshwater influenced with bulk salinities ranging from 0.0 to 2.8, similar to those found in freshwater influenced Baltic Sea ice. The ...
  • Fecundity and egg size in anadromous brown trout Salmo trutta 

    Rinaldo, Adrian (Master thesis; Mastergradsoppgave, 2020-05-31)
    Historically, anadromous salmonids provided a necessary provisioning service for Norwegian coastal settlements that has transitioned into the socio-cultural service that they provide today. Over the past decades, human impact has caused anadromous salmonid populations to decline. A recent assessment found many Norwegian sea trout populations to be in poor condition. Reference point management has ...
  • Linking methane fluxes and oxidation rates to methane oxidizing bacteria in an Arctic terrestrial methane seep, Svalbard 

    Nagel, Franziska (Master thesis; Mastergradsoppgave, 2020-05-29)
    Global warming has especially detrimental effects on Arctic regions. One major issue is permafrost thaw and sub-permafrost methane escape via surface seeps. While the mitigation potential of methane-consuming bacteria on marine pingo-like methane seeps is well described, terrestrial methane seeps are still understudied. Recently, open system pingos have gained attention as terrestrial methane seeps. ...
  • Hibernation in European Hamsters (Cricetus crisetus): An assessment of brain permeability during torpor-arousal cycling 

    Markussen, Fredrik Andreas Fasth (Master thesis; Mastergradsoppgave, 2020-05-22)
    Hibernation is a physiological and behavioural adaptation that permits survival during seasonal periods of energy shortage via a combination of pre-hibernal energy storage and hibernal metabolic depression, i.e. torpor. The central mechanisms in the brain that control torpor expression and arousal from it has been under investigation since the dawn of hibernation research but remains unknown. Recent ...
  • Feeding ecology and interactions of invasive vendace and DR whitefish in the Pasvik watercourse 

    Høstmark, Malin Solheim (Master thesis; Mastergradsoppgave, 2021-02-15)
    Introductions and invasions of species outside their natural range can have devastating effects on the native species and be a major driver of biodiversity change. When the zooplanktivorous vendace invaded the Pasvik watercourse in the 1990s, it quickly took over the ecological role of the native DR whitefish. In the upper part of the watercourse, DR whitefish was displaced from the pelagic habitat ...
  • Gastrointestinal nematodes in Icelandic reindeer (Rangifer tarandus tarandus) 

    Dembereldagva, Selengemurun (Master thesis; Mastergradsoppgave, 2021-01-18)
    Reindeer (<i>Rangifer tarandus</i>) are host to gastrointestinal-tract nematodes (GINs) throughout the world. Some populations of reindeer exist in almost complete isolation from others, and this can have a key influence on the species and infection rates of GINs. An example of an isolated reindeer population occurs in Iceland. In this study, I have investigated the prevalence of GINs in Icelandic ...
  • Fibroblast in vitro stimulation with TGFβ1 and bFGF; αSMA expression and S100A4 immunohistochemistry staining in oral cancer 

    Alexopoulou, Eirini (Master thesis; Mastergradsoppgave, 2020-12-16)
    Oral squamous cell carcinoma (OSCC) is an aggressive cancer associated with high mortality rates. The objective of this master project was to test the following hypotheses: (1) transforming growth factor β1 (TGFβ1) activates fibroblasts in vitro and basic fibroblast growth factor (bFGF) deactivates them while both increase fibroblast proliferation in cancer associated fibroblasts (CAFs); (2) the ...
  • Within-Season Trends in Abundance and Distribution of Humpback Whales (Megaptera novaeangliae) in the Antarctic Peninsula Region 

    Johannessen, John Elling Deehr (Master thesis; Mastergradsoppgave, 2020-12-15)
    Fine-scale knowledge of cetacean abundance and distribution throughout the Antarctic Peninsula (AP) is lacking yet essential for effective ecosystem-based fisheries management (EBFM). We investigated an important area both for migratory humpback whales (Megaptera novaeangliae) and Antarctic krill (Euphausia superba) fisheries to assess potential spatio-temporal interactions, for use in adaptive EBFM ...
  • The effect of climate change on the fish community in Lille Rostavatn, northern Norway 

    Dalbak, Katrine (Master thesis; Mastergradsoppgave, 2020-12-21)
    Over the last 20 years there has been a large change in the fish community structure in Lille Rostavatn, northern Norway. The relative contribution of the cold-water adapted fish species, Arctic charr (<i>Salvelinus alpinus</i>) and burbot (<i>Lota lota</i>), has distinctly decreased whereas the more temperate-adapted fish species, grayling (<i>Thymallus thymallus</i>) and brown trout (<i>Salmo ...
  • Hydrocarbon biodegradation potential in environmental bacterial metagenome 

    Caro Pascual, Alicia (Master thesis; Mastergradsoppgave, 2020-12-15)
    Hydrocarbon pollution in marine environments present an acute problem which is aggravated by cold temperatures. This is especially relevant in important environmental and economic northern regions such as the Barents Sea. The Barents Sea region has become the focus of oil industries from Russia and Norway, incrementing the risk of hydrocarbon pollution. Bioremediation is a cost-effective and ...
  • Variation in epiphytic vegetation in spruce plantations and adjacent native birch forests in North Norway 

    Nilsen, Kjersti Wannebo (Master thesis; Mastergradsoppgave, 2007-05)
    Epiphytic vegetation can contribute to increased knowledge on how planting of spruce in areas where spruce does not occur naturally in the landscape can affect the environment. In the current study, 31 spruce plantations in Troms and Vesterålen in North Norway were investigated, with emphasis on species abundance of macrolichens on tree trunks and branches. The main assumption was that planting of ...
  • Mercury in fish from a subarctic watercourse and its relation to trophic ecology 

    Henriksson, Matilda (Master thesis; Mastergradsoppgave, 2020-11-16)
    Mercury (Hg) contamination in aquatic ecosystems is a serious concern because it can bioaccumulate and biomagnify to harmful concentrations within a food web and consequently end up in humans that eat polluted fish. The Pasvik watercourse, located in the border area between Norway, Finland and Russia, is strongly affected by the emissions of heavy metals from nearby Russian metallurgic smelters. In ...
  • Foraging behaviour of humpback whales (Megaptera novaeangliae): Automatic detection of feeding lunges from two-dimensional data 

    Pedersen, Maren Andrea (Master thesis; Mastergradsoppgave, 2020-09-10)
    Rorqual whales (Family Balaenopteridae) forage almost exclusively by performing so-called feeding lunges. It is difficult to study rorqual foraging behaviour through direct observation because most of the lunges are carried out deep in the water column. The introduction of high-resolution digital tags recording three-dimensional (3D) acceleration has allowed for the collection of complex movement ...
  • The influence of herring (Clupea harengus) biomass and distribution on killer whale (Orcinus orca) movements on the Norwegian shelf 

    Vogel, Emma F. (Master thesis; Mastergradsoppgave, 2020-06-01)
    Killer whales (Orcinus orca) have a cosmopolitan distribution with a broad diet ranging from fish to marine mammals. Regional populations show local prey specialization and their movements are tightly linked to those of their prey. Norwegian killer whales are known to feed extensively on Norwegian spring spawning (NSS) herring (Clupea harengus). Over the last decade, killer whales have begun to ...
  • Overexpression analysis of bilberry (Vaccinium myrtillus L.) R2R3-MYB transcription factors 

    Afzal, Muhammad Bilal (Master thesis; Mastergradsoppgave, 2020-06-15)
    Bilberry (Vaccinium myrtillus L.) is a dwarf shrub and its berries are rich source of nutrients, fibers and vitamins. Bilberry consumption has been shown to positively correlated with improvement of human health. Anthocyanins and proanthocyanidins (PAs) are important secondary metabolites that are synthetized in plants via flavonoid biosynthesis pathway. PAs also have anti-cancer, anti-inflammatory ...
  • Change in sugar levels and related gene expression during bilberry fruit development and ripening 

    Dhakal, Binita (Master thesis; Mastergradsoppgave, 2020-06-15)
    Vaccinium myrtillus L., commonly known as European blueberry or bilberry, has been used as food and medicine since ancient times. Bilberries are highly valued in European and Asian markets. Sugar accumulation is responsible for the sweet taste of fruit, which is one of the main determinants of fruit quality. However, sugar metabolism in bilberry has not been studied before. This study was aimed to ...
  • Epibenthic and Demersal Fish Community Structure and the Effects of Environmental Conditions in the Sub-Arctic Fjords Vengsøyfjorden and Kaldfjorden 

    Dugan, Susan Frances (Master thesis; Mastergradsoppgave, 2020-06-01)
    Epifauna are organisms that live on, or close to, the sediment surface and commonly consist of taxa such as sea anemones, sea/brittle stars, and crustaceans. These communities have an important role in redistributing and remineralizing marine organic matter, and as prey for commercially important shellfish and fish. The structure of epibenthic communities can be important indicators of anthropogenic ...
  • Sympagic-pelagic coupling and vertical export in two seasonally ice-covered fjords. Study of the physical and biological drivers in the sub-Arctic Ramfjorden (Norwegian mainland) and the Arctic Van Mijenfjorden (Svalbard archipelago) during early spring bloom. 

    Goraguer, Lucie Hélène Marie (Master thesis; Mastergradsoppgave, 2020-06-01)
    Fjords are important high latitudes ecosystems, many have beside planctonic ones, a unique ecosystem associated with seasonal ice cover. During the development of the spring season conditions, two major type of primary producers contribute highly to the biomass production: sea-ice algae inhabiting brine channels and bottom surface of the ice (sympagic algae) and phytoplankton, living in the water ...
  • Hungry during migration? Humpback whale movement from the Barents Sea to a feeding stopover in northern Norway revealed by photo-ID analysis 

    Ramm, Theresia (Master thesis; Mastergradsoppgave, 2020-06-01)
    In the last nine winters, a humpback whale feeding aggregation has been observed in the nearshore waters and fjords of northern Norway. This seasonal humpback whale occurrence is presumably driven by a shift in the overwintering distribution of Norwegian spring spawning (NSS) herring into these coastal areas. Eastern North Atlantic humpback whales feed during summer in relative remote regions in ...

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