Browsing Institutt for biologi by Title
Now showing items 619-638 of 2521
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Do mercury, selenium, cadmium and zinc cause oxidative stress in common eiders (Somateria mollissima) from Svalbard?
(Master thesis, 2011)The levels of mercury have shown to increase in the Arctic environment as a cause of human activities. Few studies have examined the antioxidant system as a response to heavy metals in Arctic seabirds. Levels of the elements ... -
Do Societies benefit by a more Gender equal Education System?
(Master thesis, 2015)Evolutionary, the two sexes have been selected for different traits, and some division in interests and activities between the genders is natural. The important thing is that both sexes are given the same opportunities and ... -
Do the invasive fish species round goby (Neogobius melanostomus) and the native fish species viviparous eelpout (Zoarces viviparus) compete for shelter?
(Master thesis, 2019)Introduksjon av arter forårsaket av mennesker har økt enormt over de siste tiårene, med økende transport og handel på tvers av landegrenser. Etablering av invasive arter i et nytt miljø kan resultere i drastiske endringer ... -
Does evolvability predict evolutionary divergence?
(Master thesis, 2020)Evolverbarhet er potensialet for evolusjon og kan defineres som en populasjons evne til å produsere og opprettholde genetisk variasjon. Evolverbarhet avhenger av den additive genetiske variansen, som representerer den delen ... -
Does human activities affect stress level in Serengeti elephants (Loxodonta africana)?
(Master thesis, 2011)African elephants play a vital role in the Serengeti ecosystem, with the opportunity to alter the entire ecosystem by their sheer number. Management of these animals with the ambition of improving their welfare is therefore ... -
Does Immune Response Influence Mate Choice in Sex Role Reversed Pipefish?
(Master thesis, 2014)Vibrio sp. is the most diverse and abundant pathogenic bacteria in aquatic environments. This pathogen gets more abundant at warmer temperatures and low salinity. The Baltic Sea is more affected by climate change than ... -
Does individual variation in producer-scrounger behavior covary with individual life-histories?
(Master thesis, 2023)SAMMENDRAG Denne oppgaven utforsker forholdet mellom dyrs atferd, personlighet, fysiologi og livstempo-syndromer (POLS). Dyrepersonlighet refererer til konsistente individuelle atferdsvariasjoner. Jeg hadde som mål å ... -
Does multiple paternity explain phenotypic variation among offspring in wild boar?
(Journal article; Peer reviewed, 2018)During pregnancy, littermates compete to extract maternal resources from the placenta. Unequal extraction of resources leads to developmental differences among offspring and thus within-litter variation in offspring mass. ... -
Does seed size respond to selection on blossom size? - An artificial selection experiment on Dalechampia scandens
(Master thesis, 2017)1. Within populations variation in seed size may result from phenotypic correlation between seed size and flower size, a hypothesis originally suggested by Primack (1987). Such phenotypic correlation can be generated either ... -
Does V̇O2peak improve risk prediction of cardiovascular disease in older adults? The Generation 100 study
(Master thesis, 2019)Bakgrunn: De siste to tiårene har det blitt utviklet flere risikomodeller for kardiovaskulær sykdom (CVD). I Norge, er risikomodellen NORRISK 2 anbefalt, men denne modellen er dårlig på prediksjon i eldre voksne. I tidligere ... -
Domain-specific neural networks improve automated bird sound recognition already with small amount of local data
(Peer reviewed; Journal article, 2022)An automatic bird sound recognition system is a useful tool for collecting data of different bird species for ecological analysis. Together with autonomous recording units (ARUs), such a system provides a possibility to ... -
Don't go chasing the ghosts of the past: habitat selection and site fidelity during calving in an Arctic ungulate
(Peer reviewed; Journal article, 2021)Predator avoidance and food availability are both factors known to influence habitat selection and site fidelity around calving in caribou and reindeer. Here, we assess habitat selection and site fidelity during the calving ... -
Drivers and consequences of partial migration in an alpine bird species
(Peer reviewed; Journal article, 2022)1. Partial migration, where a portion of the population migrates between win-ter and summer (breeding) areas and the rest remain year- round resident, is a common phenomenon across several taxonomic groups. Several hypotheses ... -
Drivers of C cycling in three arctic-alpine plant communities
(Journal article; Peer reviewed, 2019)Recent vegetation changes in arctic-alpine tundra ecosystems may affect several ecosystem processes that regulate microbe and soil functions. Such changes can alter ecosystem carbon (C) cycling with positive feedback to ... -
Drivers of change in meso-carnivore distributions in a northern ecosystem
(Doctoral theses at NTNU;2020:182, Doctoral thesis, 2020)Species have been subject to major perturbations in recent times, such as over-harvest, habitat loss and climate change, affecting their distribution and abundance. Alpine and arctic tundra ecosystems are particularly ... -
Drivers of conservation crimes in the Rungwa-Kizigo-Muhesi Game Reserves, Central Tanzania
(Journal article; Peer reviewed, 2019)Conservation crimes are posing serious threats to wildlife species and biodiversity of the Rungwa-Kizigo-Muhesi-Game-Reserves. Devising effective strategies to reduce risks to as low as reasonably possible of these crimes, ... -
Drivers of plant recruitment in alpine vegetation
(Doctoral theses at NTNU;2020:394, Doctoral thesis, 2020)Hva er viktig for rekruttering av planter i fjellet? Endringer i klima og beite påvirker vegetasjonen i fjellet. Noen arter øker i utbredelse, mens andre er i nedgang. Det fører til nye sammensetninger av plantesamfunn. ... -
Drivers of seabird spatial ecology - implications for development of offshore windpower in Norway
(Doctoral theses at NTNU;2018:65, Doctoral thesis, 2018) -
Dynamic changes of the Prf/Pto tomato resistance complex following effector recognition
(Journal article; Peer reviewed, 2023) -
Dynamic responses to silicon in Thalassiosira pseudonana - Identification, characterisation and classification of signature genes and their corresponding protein motifs
(Journal article; Peer reviewed, 2017)The diatom cell wall, or frustule, is a highly complex, three-dimensional structure consisting of nanopatterned silica as well as proteins and other organic components. While some key components have been identified, ...