Recent additions

  • Effect of Antiviral Drugs against Cervid Herpesvirus 2 (CvHV2) in vitro 

    Magnuson, Emily Elizabeth (Master thesis; Mastergradsoppgave, 2018-11-15)
    Cervid herpesvirus 2 (CvHV2) is an alphaherpesvirus found in Rangifer subspecies throughout most of the circumpolar Arctic and the causative agent of infectious keratoconjunctivitis (IKC) in semi-domesticated Eurasian tundra reindeer (Rangifer tarandus tarandus). IKC occurs as regular outbreaks, affecting dozens of reindeer in a herd, and is most common and severe among calves and young animals. IKC ...
  • Yearly variation in allelopathic compound production along a climatic gradient. A case of study of Empetrum nigrum 

    Moriana Armendariz, Mikel (Master thesis; Mastergradsoppgave, 2017-11-15)
    Empetrum nigrum is a plant common in northern ecosystems with capacity to produce allelopathic compounds, which among other effects inhibit seed establishment and germination of other plants. Some of the most studied compounds regarding this effect are batatasin-III and phenolic acids, among them caffeic acid, which account for a large proportion of the leaf’s biomass. 5 random sites were established ...
  • Recolonization and succession of a subtidal hard-bottom epibenthic community in Smeerenburgfjorden, NW Svalbard. 

    Keck, Amalia (Master thesis; Mastergradsoppgave, 2018-05-15)
    Rapid changes to the physical environment of Arctic marine systems in recent years impact the structure and function of benthic ecosystems. Exploring the resilience of these systems to perturbations requires a solid understanding of key ecological processes and must be conducted over appropriate time scales due to the slow growth and recruitment of many Arctic benthic organisms. This study addresses ...
  • Seasonal and ontogenetic variation in the infection of intestinal parasites in Arctic charr (Salvelinus alpinus) and brown trout (Salmo trutta) in a subarctic lake. 

    Prati, Sebastian (Master thesis; Mastergradsoppgave, 2019-05-14)
    The vast majority of studies in northern lake systems have been carried out on a short-term scale, principally during spring and summer and mostly focusing on a single parasite species. There are few winter studies of fish parasites in the subarctic area, and even less regarding seasonal variations in the sub-communities of intestinal parasites in Arctic charr (Salvelinus alpinus) and brown trout ...
  • Drones and marine mammals in Svalbard 

    Palomino Gonzalez, Albert (Master thesis; Mastergradsoppgave, 2019-07-15)
    The impact of Remote Piloted Aircraft Systems (RPAS, or drones) on marine mammals remains poorly documented despite their increasing use by hobbyists and scientists. In the High-Arctic Archipelago of Svalbard, where marine mammals are facing increasing pressure from the coupled effects of climate modification and an expanding tourism industry, the use of RPAS remains largely unregulated to date. In ...
  • A patch of Calanus finmarchicus in the Lofoten-Vesterålen Region. Characteristics and determining factors 

    Santana Hernández, Néstor (Master thesis; Mastergradsoppgave, 2019-05-16)
    Zooplankton patchiness has been documented in many shelf areas and is of vital importance for understanding predator-prey relationships in pelagic marine systems. By combining hydrographic, acoustic and net data collected in spring 2017, we present a detailed understanding of the extent of this phenomenon in the Lofoten-Vesterålen region. Such patches are of potential interest not only for zooplankton ...
  • DNA metabarcoding of deep-sea sediment communities using COI: community assessment, spatio-temporal patterns and comparison with the 18S rDNA marker 

    Atienza Casas, Sara (Master thesis; Mastergradsoppgave, 2019-06-15)
    The deep sea is the largest biome on Earth, albeit it is the least studied. Among the complex ecosystems and habitats that form the deep sea, submarine canyons and open slope systems are regarded to be potential hot-spots of biodiversity. The Mediterranean Sea hosts the 8.86% of the inventoried submarine canyons in the global ocean, like the Blanes Canyon, located in its Northwestern section. We ...
  • Cardiotoxic Effects from the Water-Soluble Fraction of Crude Oil on an Arctic Keystone Species – Polar Cod (Boreogadus saida) 

    Teisrud, Ragnar Nicolaysen (Master thesis; Mastergradsoppgave, 2019-05-23)
    The Arctic ecosystems and its species are under increased anthropogenic pressure from both climate change and industrial activities. Of special interest is pollution from petrogenic substances, and in particular accidental oil spills, that pose a risk to arctic marine organisms. An oil spill in the Arctic may see crude oil encapsulated into the sea ice and over time leaching to surface waters in the ...
  • Comparison of eyfluke (Diplostomum spp.) infections of polymorphic whitefish (Coregonus lavaretus L.) populations in two sub-Arctic Norwegian lakes 

    Øie, Ida (Master thesis; Mastergradsoppgave, 2018-08-15)
    Abstract Parasites might be small, but they are very important elements in the ecosystems. Parasites may have a strong negative influence on their host, and some species might even manipulate their hosts. Parasites commonly have complex life cycles and may use multiple different hosts. This study has been conducted in two sub-arctic lakes in Northern Norway with polymorphic whitefish populations. ...
  • Decomposition in differing snow regimes in high Arctic Svalbard 

    Heavyside, Paige Kathryn (Master thesis; Mastergradsoppgave, 2019-05-29)
    Rapidly rising temperatures are having great effects on the high arctic ecosystem, historically characterized by long, cold winter periods, and cold dry summers. Due to the length of the winter season, arctic soils have been an important carbon sink, but may now be facing increased microbial activity due to increasing temperatures. Temperature, moisture, and litter quality play important roles in ...
  • Cardiotoxic Effects from the Water-Soluble Fraction of Crude Oil on an Arctic Keystone Species – Polar Cod (Boreogadus saida) 

    Teisrud, Ragnar Nicolaysen (Master thesis; Mastergradsoppgave, 2019-05-23)
    Abstract The Arctic ecosystems and its species are under increased anthropogenic pressure from both climate change and industrial activities. Of special interest is pollution from petrogenic substances, and in particular accidental oil spills, that pose a risk to arctic marine organisms. An oil spill in the Arctic may see crude oil encapsulated into the sea ice and over time leaching to surface ...
  • Development of diving capacity and behaviour in harp seal (Pagophilus groenlandicus) weanlings from the Greenland Sea Stock 

    Malde, Aleksander (Master thesis; Mastergradsoppgave, 2019-05-15)
    This study represents one of the first studies that has explored the spatial and temporal differences in diving behaviour of weaned harp seal pups (Pagophilus groenlandicus) from the Greenland Sea stock. The study is also the first to map the weaned harp seal pups from the Greenland Sea population. In April 2017, newly weaned harp seal pups (n=26) from the Greenland Sea stock were tagged with satellite ...
  • In Silico Screening for inhibitors against Apicoplast Phosphate Translocator from Toxoplama gondii 

    Shamsuzzaman, Muhammad (Master thesis; Mastergradsoppgave, 2019-05-16)
    Apicomplexa parasites, including Toxoplasma gondii and Plasmodium falciparum, contain a secondary endosymbiosis-derived plastid like organ, called apicoplast, which is an anabolic hub. This apicoplast is fueled by phosphate translocator (APT), which transport phosphorylated sugar molecules in exchange of inorganic phosphate. Disruption of APT in T. gondii was found to be lethal for parasite. Beside ...
  • Differences in chick feeding frequency between parental sex and morph combination in the Common guillemot Uria aalge 

    Holmøy, Marthe Johansen (Master thesis; Mastergradsoppgave, 2019-05-15)
    The Common guillemot (Uria aalge) is a monomorphic seabird who exhibits two colour morphs: a bridled and an unbridled. The aim of this study was to investigate which effect parental sex and morph had on the daily chick feeding frequency and during the chick-rearing period. To assess this, two fixed time-lapse cameras were used to document the chick feeding frequency for 27 Common guillemot families ...
  • Ringed seal (Pusa hispida) diet on the west coast of Spitsbergen, Svalbard, Norway 

    Bengtsson, Olof Mikael (Master thesis; Mastergradsoppgave, 2019-05-15)
    The diet of 99 coastal-feeding ringed seals (Pusa hispida), collected in western Spitsbergen, Svalbard (Norway), was analysed via identification of hard-parts in the contents of their gastrointestinal tracts (GITs). The study animals where shot either in spring (n = 30; April-July) or autumn (n = 69; August-October) during four consecutive years (2014-2017). Thirty different prey types were identified ...
  • Brain capillarization in diving mammals: a selection of staining and quantification methods 

    Ciccone, Chiara (Master thesis; Mastergradsoppgave, 2019-05-15)
    Diving species can cope with acute and repeated hypoxia through adaptations that are absent in non-diving animals. One of the greatest challenges to deal with during diving is the lowering of the arterial oxygen pressure (PaO2), which causes a decrease in the driving force for the oxygen diffusion from the capillaries to the cells. My hypothesis is that the marine mammalian brain shows improved brain ...
  • Riverine and glacier influence on infaunal benthic communities in Isfjorden, Svalbard. 

    Ugelstad, Charlotte Pedersen (Master thesis; Mastergradsoppgave, 2019-05-15)
    Fjords are the interface between land and ocean, and processes happening on land have implication for the coastal areas. In addition, differences in fjord characteristics, such as morphology, sedimentation and water circulation, can drive differences in fjord ecology, including benthic community composition (Syvitsky et al. 1986). Soft-bottom macro-fauna was collected in August 2018 using a Van-Veen ...
  • Seasonality in mercury bioaccumulation in particulate organic matter and zooplankton in a river-influenced Arctic fjord (Adventfjord, Svalbard). 

    Carrasco, Nathalie (Master thesis; Mastergradsoppgave, 2019-05-15)
    Methylmercury (MeHg) is of concern because it has the capacity to readily bioaccumulate and biomagnify along trophic levels until humans, exhibiting toxic effects such as neurotoxicity. Increased permafrost melt (that stores large amounts of carbon and mercury (Hg)) and river inputs, are expected to increase the exposure to Hg through uptake and transfer of contaminants through the food web. The ...
  • Activity of XTHs during host plant infection by the parasitic plant Cuscuta. 

    Sarfowaa, Adwoa (Master thesis; Mastergradsoppgave, 2019-05-15)
    Parasitic plants including Cuscuta develop specialized structures called haustoria during infection. These specialized organs give the parasite the capacity of host attachment, invasion, vasculature connection and material transfer between the host and the parasite. Successful invasion allows organic substances, nutrients and water to flow into the parasite through the host phloem and xylem cells. ...
  • Time dependent temperature effects on methane production in Arctic peat soils 

    Grunnvåg, Jeanette Slettnes (Master thesis; Mastergradsoppgave, 2019-05-16)
    Peatlands constitute the largest natural reservoir of carbon on the planet making them key components in the global carbon balance. Peatlands are mostly found in the northern hemisphere under cold conditions. As the world is warming and arctic peatlands are becoming heavily influenced by increasing temperatures, an increased interest in the peat soil microbial systems have arisen. Methane, a potent ...

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