Browsing Institutt for biologi by Title

Now showing items 671-690 of 2612

    • Eat or sleep: Availability of winter prey explains mid-winter and spring activity in an Arctic Calanus population 

      Hobbs, Laura; Banas, Neil S.; Cottier, Finlo Robert; Berge, Jørgen; Daase, Malin (Peer reviewed; Journal article, 2020)
      Copepods of the genus Calanus have adapted to high levels of seasonality in prey availability by entering a period of hibernation during winter known as diapause, but repeated observations of active Calanus spp. have been ...

    • ECG augmented pulse oximetry in Atlantic salmon (Salmo salar)—A pilot study 

      Svendsen, Eirik; Føre, Martin; Randeberg, Lise Lyngsnes; Olsen, Rolf-Erik; Finstad, Bengt; Remen, Mette; Bloecher, Nina; Alfredsen, Jo Arve (Peer reviewed; Journal article, 2023)
      Understanding the tolerance limits of fish is crucial for developing aquaculture operations that ensure good animal welfare. However, there exist little data describing the physiological responses in farmed Atlantic salmon, ...

    • Eco-evolutionary feedbacks - theoretical models and perspectives 

      Govaert, Lynn; Fronhofer, Emanuel A.; Lion, Sébastien; Eizaguirre, Christophe; Bonte, Dries; Egas, Martijn; Hendry, Andrew P.; Martins, Ayana de Brito; Melian, Carlos J.; Raeymaekers, Joost A. M.; Ratikainen, Irja Ida; Sæther, Bernt-Erik; Schweitzer, Jennifer A.; Matthews, Blake (Journal article; Peer reviewed, 2018)
      Theoretical models pertaining to feedbacks between ecological and evolutionary processes are prevalent in multiple biological fields. An integrative overview is currently lacking, due to little crosstalk between the fields ...

    • Eco-physiological responses of cold-water corals to anthropogenic sedimentation and particle shape 

      Liefmann, Stephanie (Master thesis, 2016)
      Cold-water coral habitats have been known to science for centuries, but only recently have scientists stated to study them. Among these habitats, also soft corals are found, and they have been even less investigated than ...

    • Eco-physiology of the Arctic kelp Laminaria solidungula: - using divers, Remotely Operated Vehicle and Pulse Amplitude Modulated fluorometry 

      Belseth, Elen (Master thesis, 2012)
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    • The ecological and evolutionary role of telomere length in house sparrows 

      Pepke, Michael Le (Doctoral theses at NTNU;2021:420, Doctoral thesis, 2021)
      Telomeres, the DNA sequences capping the ends of linear chromosomes, are ancient molecular structures that are shared among most eucaryotes. The telomeres protect chromosomes from degradation and are vital to genome ...

    • Ecological dependencies make remote reef fish communities most vulnerable to coral loss 

      Strona, Giovanni; Beck, Pieter S. A.; Cabeza, Mar; Fattorini, Simone; Guilhaumon, François; Micheli, Fiorenza; Montano, Simone; Ovaskainen, Otso; Planes, Serge; Veech, Joseph A.; Parravicini, Valeriano (Peer reviewed; Journal article, 2021)
      Ecosystems face both local hazards, such as over-exploitation, and global hazards, such as climate change. Since the impact of local hazards attenuates with distance from humans, local extinction risk should decrease with ...

    • Ecological dynamics and large scale phenotypic differentiation in density-dependent populations 

      Engen, Steinar; Sæther, Bernt-Erik (Journal article; Peer reviewed, 2019)
      Spatial differentiation of phenotypes is assumed to be determined by a combination of fluctuating selection producing adaptations to the local environment and a homogenizing effect of migration. We present a model with ...

    • Ecological Effects of Climate-Driven Salinity Variation in the San Francisco Estuary: Can We Anticipate and Manage the Coming Changes? 

      Ghalambor, Cameron; Gross, Edward S.; Grosholz, Edwin D.; Jeffries, Ken M.; Largier, John L.; McCormick, Stephen D.; Sommer, Ted; Velotta, Jonathan P.; Whitehead, Andrew (Peer reviewed; Journal article, 2021)
      Climate change-driven sea level rise and altered precipitation regimes are predicted to alter patterns of salt intrusion within the San Francisco Estuary. A central question is: Can we use existing knowledge and future ...

    • Ecological modeling of metabolic rates predicts diverging optima across food abundances 

      Einum, Sigurd (Journal article; Peer reviewed, 2014)
      Genetically based variation in metabolic rates of resting animals (RMR) suggests a potential role for evolutionary adaptations, but mechanistic models yielding evolutionary predictions are lacking. Here I utilize the ...

    • Ecological signals of arctic plant-microbe associations are consistent across eDNA and vegetation surveys 

      Parisy, Bastien; Schmidt, Niels M.; Wirta, Helena; Stewart, Lærke Søndergaard; Pellissier, Loic; Holben, William E.; Pannoni, Sam; Somervuo, Panu; Jones, Mirkka M.; Siren, Jukka; Vesterinen, Eero; Ovaskainen, Otso Tapio; Roslin, Tomas (Peer reviewed; Journal article, 2023)
      Understanding how different taxa respond to abiotic characteristics of the environment is of key interest for understanding the assembly of communities. Yet, whether eDNA data will suffice to accurately capture environmental ...

    • Ecology and Conservation Challenges of the Kori bustard in the Serengeti National Park 

      Mmassy, Emmanuel Clamsen (Doctoral theses at NTNU;2017:238, Doctoral thesis, 2017)
      The study focused on the ecology and conservation challenges of the Kori bustard in the Serengeti National Park. The main objectives of the study was to determine the factors that affect local ecological knowledge and ...

    • Ecology, Behaviour and Conservation Status of Masai Giraffe (Giraffa camelopardalis tippelskirchi) in Tanzania 

      Marealle, Wilfred Njama (Doctoral theses at NTNU;2016:285, Doctoral thesis, 2016)
      Globally, biodiversity resources have been in decline since mankind began to keep records of their surrounding environments. With the combination of different natural catastrophes over centuries and human-induced activities, ...

    • Ecosystem carbon stocks in Danish deciduous forests: impact of land-use history and management on major carbon pools 

      Solhus, Tonje Rostad (Master thesis, 2023)
      Skog er viktig karbonsluk, og bidrar med å hjelpe å dempe klimaendringene. Bærekraftig forvaltning av skogen er nødvendig for å kunne maksimere effekten av karbonslukene. Effekten av tidligere arealbruk, og nåværende ...

    • Ecotoxicological impacts of surface water and wastewater from conventional and advanced treatment technologies on brood size, larval length, and cytochrome P450 (35A3) expression in Caenorhabditis elegans 

      Abbas, Aennes; Valek, Lucie; Schneider, Ilona; Bollmann, Anna; Knopp, Gregor; Seitz, Wolfram; Schulte-Oehlmann, Ulrike; Oehlmann, Jörg; Wagner, Martin (Journal article; Peer reviewed, 2018)
      Anthropogenic micropollutants and transformation products (TPs) negatively affect aquatic ecosystems and water resources. Wastewater treatment plants (WWTP) represent major point sources for (micro)pollutants and TPs in ...

    • Effect of abandonment of semi-natural grassland on pollinator-mediated selection in Campanula rotundifolia 

      Aasdalen, Maria (Master thesis, 2024)
      Den eksponentielle veksten av menneskebefolkningen på jorda fører med seg en intensivering av jordbruk som truer mange arter og habitater. Konsekvensen av endringer i hvordan mennesker utnytter landarealer er tap og ...

    • Effect of Cadmium on the marine diatoms Seminavis robusta and Phaeodactylum tricornutum: A comparative study 

      Madasamy Srinivasan Babu, Anitha (Master thesis, 2016)
      Background: Heavy metals cause a harmful effect on marine ecosystems because of their toxicity, persistence and bioaccumulation properties. Cadmium (Cd) is speculated to be a unique heavy metal due to its diverse toxic ...

    • Effect of Calibration Data Subsetting on Boolean Model Calibration and Drug Synergy Predictions 

      Hettasch, Thea Johanna Aandstad (Master thesis, 2023)
      Kreft er et samlebegrep for en rekke sykdomstilstander som kjennetegnes av unormal og ukontrollert celledeling, og forårsakes av avvikende regulering av ulike cellulære signalveier knyttet til cellevekst og celledød. Med ...

    • The effect of climate change on avian offspring production: A global meta-analysis 

      Halupka, Lucyna; Arlt, Debora; Tolvanen, Jere; Millon, Alexandre; Bize, Pierre; Adamík, Peter; Albert, Pascal; Arendt, Wayne J.; Artemyev, Alexander V.; Baglione, Vittorio; Bańbura, Jerzy; Bańbura, Mirosława; Barba, Emilio; Barrett, Robert; Becker, Peter H.; Belskii, Eugen; Bolton, Mark; Bowers, E Keith; Bried, Joël; Brouwer, Lyanne; Bukacińska, Monika; Bukaciński, Dariusz; Bulluck, Lesley; Carstens, Kate F.; Catry, Inês; Charter, Motti; Chernomorets, Anna; Covas, Rita; Czuchra, Monika; Dearborn, Donald C.; de Lope, Florentino; Di Giacomo, Adrián S; Dombrovski, Valery C.; Drummond, Hugh; Dunn, Michael J.; Eeva, Tapio; Emmerson, Louise M.; Espmark, Yngve; Fargallo, Juan A.; Gashkov, Sergey I.; Golubova, Elena Yu; Griesser, Michael; Harris, Michael P.; Hoover, Jeffrey P.; Jagiełło, Zuzanna; Karell, Patrik; Kloskowski, Janusz; Koenig, Walter D.; Kolunen, Heikki; Korczak-Abshire, Małgorzata; Korpimäki, Erkki; Krams, Indrikis; Krist, Miloš; Krüger, Sonja C.; Kuranov, Boris D.; Lambin, Xavier; Lombardo, Michael P.; Lyakhov, Andrey; Marzal, Alfonso; Møller, Anders P.; Neves, Verónica C; Nielsen, Jan Tøttrup; Numerov, Alexander; Orłowska, Beata; Oro, Daniel; Öst, Markus; Phillips, Richard A.; Pietiäinen, Hannu; Polo, Vicente; Porkert, Jiří; Potti, Jaime; Pöysä, Hannu; Printemps, Thierry; Prop, Jouke; Quillfeldt, Petra; Ramos, Jaime A.; Ravussin, Pierre-Alain; Rosenfield, Robert N.; Roulin, Alexandre; Rubenstein, Dustin R.; Samusenko, Irina E.; Saunders, Denis A.; Schaub, Michael; Senar, Juan C.; Sergio, Fabrizio; Solonen, Tapio; Solovyeva, Diana V.; Stępniewski, Janusz; Thompson, Paul M.; Tobolka, Marcin; Török, János; van de Pol, Martijn; Vernooij, Louis; Visser, Marcel E.; Westneat, David F.; Wheelwright, Nathaniel T.; Wiącek, Jarosław; Wiebe, Karen; Wood, Andrew G.; Wuczyński, Andrzej; Wysocki, Dariusz; Zárybnická, Markéta; Margalida, Antoni; Halupka, Konrad (Peer reviewed; Journal article, 2023)
      Climate change affects timing of reproduction in many bird species, but few studies have investigated its influence on annual reproductive output. Here, we assess changes in the annual production of young by female breeders ...

    • Effect of diet on molecular relationships between Atlantic cod larval muscle growth dynamics, metabolism, and antioxidant defense system 

      Vo, Tu Anh; Galloway, Trina Falck; Arukwe, Augustine; Edvardsen, Rolf Brudvik; Hamre, Kristin; Karlsen, Ørjan; Rønnestad, Ivar; Kjørsvik, Elin (Peer reviewed; Journal article, 2022)
      We studied molecular effects (RNAseq and qPCR) of first feeding prey types (copepods or rotifers/Artemia) on skeletal muscle myogenesis and growth dynamics (proliferation, differentiation), metabolism (glycolysis, ...