Background and activities

My research interests focus on life history strategies, migratory behaviour and habitat use in anadromous fishes. Especially, I am interested in how anthropogenic activities and environmental changes may affect anadromy and marine migrations in sea trout (Salmo trutta) and Arctic charr (Salvelinus alpinus)

During our studies on sea trout and Arctic charr, we try to reveal the underlying causes between different marine migratory strategies. Examples of research questions are if aquaculture, water temperature or levels of salinity influence migratory behaviour, habitat use or growth in the marine environment. Such information will be important in order to evaluate if dynamic environmental changes may confine the marine feeding migration of sea trout.

By use of methods such as acoustic telemetry, radiotelemetry and passive integrated transponder (PIT) tags individual fish are followed in the marine and freshwater environment for several years. Analyses of scales, stomach contents, marine parasites and stable isotopic ratios are further used to bring information about marine growth rates, trophic niche use and feeding.

Several of our projects are conducted in cooperation with e.g. Norwegian Institute for Nature Research, Dalhousie University/Ocean Tracking Network (Canada), University of Waterloo (Canada), Carleton University (Canada), Institut national de la recherche agronomique (INRA, France) or the French Polar Institute.

I lead the research group "Freshwater Ecology", which has a long and strong tradition of research into the effects of watercourse regulations, but we also work with the EU's water framework directive and other relevant freshwater ecological topics. Furthermore, the research group has a strong focus on general basic research on salmonids and freshwater benthic invertebrates.

Scientific, academic and artistic work

A selection of recent journal publications, artistic productions, books, including book and report excerpts. See all publications in the database

Journal publications