Browsing Institutt for biologi by Title

Now showing items 22-41 of 2514

    • A Hybrid Flow Cytometric Approach to the Mussel Micronucleus Cytome Assay 

      Sandsæter, Tørris (Master thesis, 2023)
      Til tross for den utbredte bruken av musling mikronukleus cytom-assayet innen akvatisk økotoksikologi(Bolognesi and Fenech, 2012), så har denne protokollen flere begrensninger og utfordringer ved seg; hvorav de fleste kan ...

    • A miniature world in decline: European Red List of Mosses, Liverworts and Hornworts 

      Hodgetts, Nick; Cálix, Marta; Englefield, Eve; Fettes, N; García Criado, M.; Patin, L; Nieto, Ana; Bergamini, Ariel; Bisang, Irene; Baisheva, Elvira; Campisi, Patrizio; Cogoni, A; Hallingbäck, Tomas; Konstantinova, Nadya A.; Lochhart, Niel; Sabovljevic, Marko; Schnyder, Norbert; Schröck, Christian; Sérgio, Cecília; Sim-Sim, M; Vrba, Jaroslav; Ferreira, C; Afonina, Olga M.; Blockeel, T.L.; Blom, Hans H.; Caspari, Steffen; Gabriel, Rosalina; Garcia, Cesar; Garilleti, R; González Mancebo, J; Goldberg, I.; Hedenäs, Lars; Holyoak, DT; Hugonnot, Vincent; Huttunen, Sanna; Ignatov, MS; Ignatova, E.A.; Infante, Marta; Juutinen, Riikka; Kiebacher, T; Köckinger, Heribert; Kucera, Jan; Lönnell, Niklas; Lüth, Michael; Martins, A.; Maslovsky, Oleg; Papp, Beata; Porley, Ron; Rothero, Gordon; Söderström, Lars; Ştefǎnuţ, Sorin; Syrjänen, Kimmo; Untereiner, A; Vána, Jíri; Vanderpoorten, Alain; Vellak, Kai; Aleffi, M; Bates, J. W.; Bell, N; Brugués, Montserrat; Cronberg, Nils; Denyer, J.; Duckett, J.G.; During, Heinjo; Enroth, Johannes; Fedosov, V.E.; Flatberg, Kjell Ivar; Ganeva, Anna; Gorski, Piotr; Gunnarsson, Urban; Hassel, Kristian; Hespanhol, Helena; Hill, M. O.; Hodd, Rory; Hylander, Kristoffer; Ingerpuu, Nele; Laaka-Lindberg, Sanna; Lara, F; Mazimpaka, V; Mežaka, Anna; Müller, F.; Orgaz, JD; Patiño, J; Pilkington, S; Puche, Felisa; Ros, RM; Rumsey, Fred; Segarra-Moragues, JG; Séneca, Ana; Stebel, A; Virtanen, Risto; Weibull, Henrik; Wilbraham, J; Zarnowiec, J (Book, 2019)
      This publication has been prepared by IUCN (International Union for Conservation of Nature) as a deliverable of the LIFE European Red Lists project (LIFE14 PRE BE 001). A miniature world in decline: The European Red List ...

    • A mixture model approach to sample size estimation in two- sample comparative microarray experiments 

      Jørstad, Tommy Stokmo; Midelfart, Herman; Bones, Atle M. (Journal article; Peer reviewed, 2008)
      Background: Choosing the appropriate sample size is an important step in the design of a microarray experiment, and recently methods have been proposed that estimate sample sizes for control of the False Discovery Rate ...

    • A molecular and morphological study of Bivalvia (Phylum: Mollusca) in Norwegian waters, with emphasis on Pectinidae Rafinesque, 1815 

      Skahjem, Nathalie (Master thesis, 2019)
      Art regnes for å være den grunnleggende enheten innenfor biologi. Dette understreker viktigheten av både avgrensning av arter, å finne antall arter og grensen mellom disse, og taksonomi, å navngi, beskrive og klassifisere ...

    • A multi-marker metabarcoding approach to study tardigrade diversity in forest ecosystems. 

      Topstad, Lasse (Master thesis, 2019)
      Som annen mikroskopisk fauna blir bjørnedyr ofte oversett i økologiske undersøkelser. Med sin kosmopolitiske utbredelse i alt fra sedimenter på havets dyp til høyalpine fjellområder, spiller bjørnedyr viktige roller i mange ...

    • A new NDVI measure that overcomes data sparsity in cloud-covered regions predicts annual variation in ground-based estimates of high arctic plant productivity 

      Karlsen, Stein Rune; Anderson, Helen B.; van der Wal, René; Hansen, Brage Bremset (Journal article; Peer reviewed, 2018)
      Efforts to estimate plant productivity using satellite data can be frustrated by the presence of cloud cover. We developed a new method to overcome this problem, focussing on the high-arctic archipelago of Svalbard where ...

    • A new Norwegian bioeconomy based on cultivation and processing of seaweeds: Opportunities and R&D needs 

      Skjermo, Jorunn; Aasen, Inga Marie; Arff, Johanne; Broch, Ole Jacob; Carvajal, Ana Karina; Christie, Hartvig C; Forbord, Silje; Olsen, Yngvar; Reitan, Kjell Inge; Rustad, Turid; Sandquist, Judit; Solbakken, Roar; Steinhovden, Kristine; Wittgens, Bernd; Wolff, Robert; Handå, Aleksander (Research report, 2014)

    • A novel compound isolated from Sclerochloa dura has anti-inflammatory effects 

      Bukhari, Syed Majid; Feuerherm, Astrid Jullumstrø; Tunset, Hanna Maja; Isaksen, Stian Moe; Sæther, Mari; Thvedt, Thor Håkon Krane; Villa Gonzalez, Susana; Schmid, Rudolf; Brunsvik, Anders; Fuglseth, Erik; Zlatković, Bojan; Johansen, Berit; Simic, Nebojsa (Journal article; Peer reviewed, 2016)
      The activation of phospholipase A2 (PLA2) by means of pro-inflammatory cytokines results in the subsequent release of arachidonic acid (AA) and generates eicosanoids, which further propagate inflammation. Through cyclooxygenases ...

    • A physiological understanding of organismal responses to fire 

      Stawski, Clare; Doty, Anna (Journal article; Peer reviewed, 2019)
      Devastation of both natural and human habitats due to wildfires is becoming an increasingly prevalent global issue. Fire-adapted and fire-prone regions, such as California and parts of Australia, are experiencing more ...

    • A pilot study assessing drones for mapping and monitoring of European shags 

      Graham, Lisa Kristine (Master thesis, 2019)
      Sjøfuglpopulasjoner er sensitive til forandringer i sitt miljø. De kan derfor studeres som indikatorer for endringer i økosystemer. I mellomtiden har droneteknologier økt i viktighet som verktøy i økologistudier og de har ...

    • A review of ecological impacts of global climate change on persistent organic pollutant and mercury pathways and exposures in arctic marine ecosystems 

      McKinney, Melissa; Pedro, Sara; Dietz, Rune; Sonne, Christian; Fisk, Aaron T.; Roy, Denis; Jenssen, Bjørn Munro; Letcher, Robert J (Journal article; Peer reviewed, 2015)
      Bioaccumulative and biomagnifying contaminants, such as persistent organic pollutants (POPs) and mercury (Hg), have for decades been recognized as a health concern in arctic marine biota. In recent years, global climate ...

    • A Review of Fennoscandian Stictochironomus (Diptera: Chironomidae), with the description of a species new to science 

      Reistad, Ingvill (Master thesis, 2023)
      Chironomidae, eller fjærmygg på norsk, er en av de mest artsrike og utbredte familiene av ferskvannsinsekter i verden. Under slekten Stictochironomus Kieffer, 1919 finnes det seks beskrevne arter i Fennoskandia, men DNA ...

    • A sex-inducing pheromone triggers cell cycle arrest and mate attraction in the diatom Seminavis robusta 

      Moeys, Sara; Frenkel, Johannes; Lembke, Christian; Gillard, Jeroen; Devos, Valerie; Van den Berge, Koen; Bouillon, Barbara; Huysman, Marie JJ; De Decker, Sam; Scharf, Julia; Bones, Atle M.; Brembu, Tore; Winge, Per; Sabbe, Koen; Vuylsteke, Martin; Clement, Lieven; De Veylder, Lieven; Pohnert, Georg; Vyverman, Wim (Journal article; Peer reviewed, 2016)
      Although sexual reproduction is believed to play a major role in the high diversification rates and species richness of diatoms, a mechanistic understanding of diatom life cycle control is virtually lacking. Diatom sexual ...

    • A shift in the thermoregulatory curve as a result of selection for high activity-related aerobic metabolism 

      Stawski, Clare; Koteja, Paweł; Sadowska, Edyta T (Journal article; Peer reviewed, 2017)
      According to the “aerobic capacity model,” endothermy in birds and mammals evolved as a result of natural selection favoring increased persistent locomotor activity, fuelled by aerobic metabolism. However, this also increased ...

    • A spatio-temporally explicit random encounter model for large-scale population surveys 

      Jousimo, Jussi; Ovaskainen, Otso (Journal article; Peer reviewed, 2016)
      Random encounter models can be used to estimate population abundance from indirect data collected by non-invasive sampling methods, such as track counts or camera-trap data. The classical Formozov–Malyshev–Pereleshin (FMP) ...

    • A study of PAMP-INDUCED SECRETED PEPTIDE LIKE 6 (PIPL6) in regulation of plant immunity 

      Gjennestad, Ragnhild Sødal (Master thesis, 2021)
      Planter har utviklet et robust forsvarssystem mot en rekke organismer som kan forårsake sykdom hos planten. Planteimmunforsvaret består av både induserbare og generelt uttrykte forsvarsmekanismer. En av de induserbare ...

    • A study of the influence of nitrate supply on intracellular protein and nitrogen components in the kelp Saccharina latissima 

      Zhou, Renbin (Master thesis, 2014)
      Saccharina latissima were cultivated in tanks with three different levels of nitrate supply. The temperature was around 12 to 18 ℃ and salinity was around 24 to 29 during the experiment. Seaweeds cultivated at Medium N ...

    • A Study of the Seasonal Variation in Biochemical Composition of Saccharina latissima 

      Tønder, Tine Solvoll (Master thesis, 2014)
      Increasing concerns for climatic changes and increasing fuel cost have encouraged a movement towards alternative fuels, and the global interest and demand for biofuel is increasing. Commercially available biofuels today ...

    • A survey of NRPS genes from Planktothrix in Lake Kolbotnvannet 

      Ballestad, Hanne (Master thesis, 2008)
      Lake Kolbotnvannet is dominated by the Cyanobacteria Planktothrix. Cyanobacteria produce oligopeptides by nonribosomal peptide synthetases (NRPS), which have unknown biological functions. NRPS genes encoding the NRPS ...

    • A systemic study of lipid metabolism regulation in salmon fingerlings and early juveniles fed plant oil 

      Jin, Yang; Olsen, Rolf Erik; Gillard, Gareth B.; Østensen, Mari-Ann; Korsvoll, Sven A.; Santi, Nina; Vik, Jon Olav; Sandve, Simen Rød; Olsen, Yngvar (Journal article; Peer reviewed, 2018)
      In salmon farming, the scarcity of fish oil has driven a shift towards the use of plant-based oil from vegetable or seed, leading to fish feed low in long-chain PUFA (LC-PUFA) and cholesterol. Atlantic salmon has the ...