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Now showing items 101-118 of 118
(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2012)
Bioaccumulation of sediment‐associated polychlorinated biphenyls (PCBs) was examined in Atlantic cod (Gadus morhua) through direct diffusion from the sediment (via the water phase) and through the food chain (dietary ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2012)
Ecological interactions determine the structure and dynamics of communities and their responses to the environment. Understanding the community-level effects of ecological interactions, such as intra- and interspecifc ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2012)
Aposematic prey use conspicuous warning signals to advertise their defenses to predators. It has long been recognized that the efficiency of a warning signal may be reduced if poorly defended prey (automimics) are present ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2012)
Time series of cell size evolution in unicellular marine algae (division Haptophyta; Coccolithus lineage), covering 57 million years, are studied by a system of linear stochastic differential equations of hierarchical ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2012)
Assessing the role of weather in the dynamics of wildlife populations is a pressing task in the face of rapid environmental change. Rodents and ruminants are abundant herbivore species in most Arctic ecosystems, many of ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2011)
Bark beetles (Coleoptera: Curculionidae, Scolytinae) feed and breed in dead or severely weakened host trees. When their population densities are high, some species aggregate on healthy host trees so that their defences may ...
(Doctoral thesis / Doktoravhandling, 2010)
This thesis focuses on the natural history of the dry rot fungus Serpula lacrymans and closely related taxa within Serpulaceae. In the first study the phylogenetic relationships within Serpulaceae have been investigated ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2012)
Background: Climate change threatens maize productivity in sub-Saharan Africa. To ensure food security, access to locally adapted genetic resources and varieties is an important adaptation measure. Most of the maize grown ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2012)
Pleistocene climate changes have imposed extreme conditions to intertidal rocky marine communities, forcing many species to significant range shifts in their geographical distributions. Phylogeographic analyses based on ...
(Doctoral thesis / Doktoravhandling, 2010)
Klimaforandringer gir drastiske endringer i mengden av organisk karbon i innsjøer og vi imøtegår en fremtid med brunere vann. Det er en av konklusjonene til Søren Larsens doktorgradsavhandling som er utført ved Biologisk ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2012)
Background: Outbreaks of pancreas disease (PD) greatly contribute to economic losses due to high mortality, control measures, interrupted production cycles, reduced feed conversion and flesh quality in the aquaculture ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2012)
There is growing evidence that post-copulatory sexual selection, mediated by sperm competition, influences the evolution of sperm phenotypes. Evidence for pre-copulatory sexual selection effects on sperm traits, on the ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2012)
Recent multilocus studies of congeneric birds have shown a pattern of elevated interspecific divergence on the Z chromosome compared to the autosomes. In contrast, intraspecifically, birds exhibit less polymorphism on the ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2012)
The seasonal timing of avian reproduction is supposed primarily to coincide with favourable feeding conditions. Long-term changes in avian breeding phenology are thus mostly scrutinized in relation to climatic factors and ...
(Doctoral thesis / Doktoravhandling, 2010)
In this thesis I have studied connectivity processes affecting the population structure of coastal cod on the Norwegian Skagerrak coast. I have focused on three aspects of the processes. Firstly the dynamics and the integrity ...
(Doctoral thesis / Doktoravhandling, 2011)
Polyploidy, i.e., the duplication of entire nuclear genomes, has shaped the evolution of major lineages of eukaryotes, and is particularly important in the Plant Kingdom. Molecular analyses suggest that the genomes of most ...
(Doctoral thesis / Doktoravhandling, 2011)
(Research report / Forskningsrapport, 1999)
Målet med dette prosjektet var å studere populasjonsgenetikken til ørekyt i Norge med sikte på å få økt kunnskap om artens spredningsmekanismer. Ørekyten utvider stadig sitt leveområde, og det er uklart hvordan spredningen ...