Blar i Institutt for biologi på utgivelsesdato
Viser treff 1-20 av 2623
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Fiskebestanden i Selbusjøen i år 2000 - 27 år etter Mysisutsettingen
(Report, 2001)Det er gjennomført en fiskeribiologisk undersøkelse i Selbusjøen i år 2000, 27 år etter utsetting av Mysis relicta i 1973. Hensikten med undersøkelsen er å beskrive den fiskeribiologiske tilstand for bestandene av ørret, ... -
Production and nutritional adaptation of the brine shrimpArtemia sp. as live food organism for larvae of marine cold water fish species
(Doctoral thesis, 2001)High nutritional value of Artemia sp. refers to high content of highly unsaturated fatty acids (n-3 HUFA) and in particular the content of DHA. In the enrichment experiments presented in this thesis new diets and one new ... -
Male dimorphism and reproductive biology in corkwing wrasse (Symphodus melops L.)
(Doctoral thesis, 2001)The scope of this thesis was to study male dimorphism and reproductive biology in corkwing wrasse (Symphodus melops L.). The most common male morph in corkwing wrasse is distinctively blue and green (territorial males), ... -
Functional analysis of plant idioblasts (Myrosin cells) and their role in defense, development and growth.
(Doctoral thesis, 2002)Glucosinolates are natural plant products known as flavor compounds, cancerpreventing agents, and biopesticides. There is a strong interest in controlling the level of glucosinolates to improve flavor and nutritional ... -
Effects of climatic change on the growth of dominating tree species along major environmental gradients.
(Doctoral thesis, 2002)This thesis deals with effects of climate on tree growth of the dominating conifer species, Picea abies (L) Karst. (Norway spruce) and Pinus sylvestris L (Scots pine), in central Norway and Fennoscandia. Both species are ... -
The role and regulation of phospholipase A₂ in monocytesduring atherosclerosis development
(Doctoral thesis, 2002)The primary cause of mortality in developed countries is cardiovascular disease. Development of the disease is regulated by atherosclerosis, a progressive inflammatory reaction that takes place in the intima of the arterial ... -
Causes and consequences of individual variation in fitness-related traits in house sparrows.
(Doctoral thesis, 2002)Human activity has caused an increase in the fragmentation of natural habitats, especially during the last couple of centuries. This means that populations of wild species are split into smaller sub-populations often ... -
Dendrochronological constructions of Norwegian conifer chronologies providing dating of historical material
(Doctoral thesis, 2002)Tree-ring chronologies have been constructed for Scots pine (Pinus sylvetris L.) in Trøndelag, west Norway and south-east Norway back to AD 765 and AD 871, respectively. These have enabled the absolute dating of floating ... -
Sex roles and reproductive behaviour in gobies and guppies : a female perspective
(Doctoral thesis, 2003)This thesis focuses on reproductive dynamics, behaviour and selection from a female perspective. The aim was to explore variation in sex roles and potential for selection on females, as well as the selective forces working ... -
Assisted recovery of disturbed arctic and alpine vegetation : an integrated approach
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Life history characteristics and genetic variation in an expanding species, Pogonatum dentatum.
(Doctoral thesis, 2003)The main objective of this thesis is to get a better understanding of the processes behind species range expansions and the consequences for variation in life history characters and genetic variation. The thesis focuses ... -
Cultivation of Herbs and Medicinal Plants in Norway - Essential Oil Production and Quality Control
(Doctoral thesis, 2003)Essential oils (EO) are plant secondary metabolites that are known for their fragrance and food flavour properties. They consist of a complex mixture of mono- and sesquiterpenes, phenyl propanoids and oxygenated compounds. ... -
Environmental effects on lipid nutrition of farmed Atlantic salmon (Salmo salar L.) parr and smolts
(Doctoral thesis, 2003)The aim of this study was to investigate the effects of water temperature and salinity on lipid nutrition of farmed Atlantic salmon (Salmo salar L.) parr and smolt. Salmon parr were held at low water temperature (2°C) for ... -
Olfactory receptor neurones specified for the same odorants in three related heliothine species (Helicoverpa armigera, Helicoverpa assulta and Heliothis virescens).: Electrophysiology linked to gas chromatography and mass spectrometry.
(Doctoral thesis, 2003)Hvordan lærer og husker vi dufter? Hvordan skiller vi dem fra hverandre? Det finnes liten kunnskap om hvilke duftsubstanser ulike lukteceller er utviklet for. I dag er gener for luktereseptorer identifisert i mange ... -
Behavioural effects on environmental pollution in threespine stickleback Gasterosteus aculeatus L
(Doctoral thesis, 2003)The aims of this study were to investigate the effects of known environmental contaminants on defined behavioural variables in fish, and to discuss properties of these behavioural traits that make them useful as potential ... -
Reproductive strategies in Scandinavian brown bears
(Doctoral thesis, 2003)Denne avhandlingen tar for seg noen sentrale aspekt ved reproduktive strategier hos brunbjørn. Første del tar for seg strategier for foreldreomsorg og hvordan disse påvirker størrelsen og overlevelsen på avkommet. Deretter ... -
Energy-allocation in avian nestlings facing short-term food shortage
(Doktoravhandlinger ved NTNU, 1503-8181; 2004:150, Doctoral thesis, 2004)This thesis investigates effects of short-term food shortage on growth, body composition and metabolic development of Pekin ducklings (Anas platyrhynchos domesticus) and European shag nestlings (Phalacrocorax aristotelis), ... -
Natural and experimental establishment of trees in the edges of a fragmented forest,Ambohitantely Forest Reserve, Madagascar
(Doktoravhandlinger ved NTNU, 1503-8181; 2004:14, Doctoral thesis, 2004) -
Dynamics of mountain birch treelines in the Scandes mountain chain, and effects of climate warming
(Doktoravhandlinger ved NTNU, 1503-8181; 2004:134, Doctoral thesis, 2004)In Fennoscandia, the upper treelines most commonly consist of mountain birch (Betula pubescens ssp. czerepanovii [Orlova] Hämet-Ahti) (Hämet-Ahti 1987; Aas and Faarlund 1996; Moen 1998). In this thesis dynamics and potential ... -
Cytochrome P4501A (CYP1A) induction and DNA adducts as biomarkers for organic pollution in the natural environment.: Evaluation and validation in bioassays and in a field laboratory experiment
(Doktoravhandlinger ved NTNU, 1503-8181; 2004:85, Doctoral thesis, 2004)Due to the serious ecological consequences associated with exposure to environmental pollutants, considerable attention has been focused on the applicability of early warning signals, or biomarkers in environmental research ...