Blar i tittel Mastergradsoppgaver i biologi

Viser treff 353-357 av 357

    • Winter behaviour of riverine anadromous Arctic charr and sea trout in northern Norway 

      Jensen, Jenny Lovisa Alexandra (Master thesis; Mastergradsoppgave, 2008-05)
      Based on earlier migration studies of lake-dwelling anadromous Arctic charr Salvelinus alpinus (L.) and sea trout Salmo trutta L. in northern Norway, both species are believed to solely overwinter in fresh water and spend only one to three months in the sea during summer. This is an assumption upon which all current management of the species in the area is based, although no studies have focused on ...

    • 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 world's northern most harbour seal population - How many are there? 

      Merkel, Benjamin (Master thesis; Mastergradsoppgave, 2012-11-15)
      This study presents the first abundance estimate for the world's northernmost harbour seal (Phoca vitulina) population, which resides in Svalbard, Norway, based on three digital stereoscopic photographic surveys conducted in 2009 and 2010. The counts from these high resolution 3D images were combined with a novel method for estimating correction factors for animals that were in the water at the time ...

    • 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 ...

    • Zooplankton communities on the Northeast coast of Greenland. How can we explain vertical and regional distribution? 

      Beroujon, Théo (Master thesis; Mastergradsoppgave, 2019-05-16)
      Most studies on zooplankton investigate the famous, and omnipresent, Calanoid copepods Calanus spp., because they are abundant, and constitute the major trophic link in marine ecosystems. Indeed, Northeast Greenland is located on the crossroad of Arctic and Atlantic waters which, potentially, can lead to a high biodiversity originating from different domains of marine life. However, there are very ...