Behavioural Ecology, Sexual selection, Statistical analysis, Salmon biology
Ecological effects of hydropower, Ecology of freshwater fish, Competitive interactions, Climate change, Winter ecology, Ecological mechanisms of speciation, Ecological modelling, EU Water Framework Directive, Sea lice
Aquatic radioecology, population ecology, life history, ecological modelling, fisheries management.
Salmonid ecology and management (leader of Scientific Advisory Committee for Atlantic Salmon Management in Norway), regulated rivers, life history, evolutionary biology (thermal adaptation, character displacement) and functional biodiversity, bioenergetics, climate change, environmental pollution (radioactivity, acid rain), and research administration (two years as Research Director, two years as Assisting Research Director and one year as Research Coordinator)
Ecophysiology, aquaculture, smoltproduction/releases of fish, pollution and other human impacts, salmonids in sea, fish diseases-parasites, biotelemetry.
Rømt oppdrettslaks, villaks, adferd, bevaringsbiologi og evolusjonsbiologi
- Riverine production of anadromous salmonids
- Competition and habitat use of juvenile salmonids
- Negative impacts on fish communities
- Mitigation measures for freshwater fish
- Gyrodactylus salaris - effects and mitigation measures
- Direct observations of riverine fish