I started my academic studies at Uppsala University, where I defended my thesis in Limnology in 1991. I have worked as a fisheries scientist since 1992 at Coastal Laboratory in Öregrund and at the Institute of Marine Research in Lysekil within the Swedish Board of Fisheries (lately at the Swedish University of Agricultural Sciences). I also work as a scientific coordinator at the Swedish Institute for the Marine Environment (SIME) since 2010. I am associate professor since 2009 in Marine ecology at Gothenburg university.

My research interests concerns fish behavioural ecology, for instance effects of migration on population separation and connectivity. I have studied especially the ecology and biology of Atlantic cod and European eel. I have studied the demersal fish population mosaic along the Swedish west coast by conducting trawl and egg surveys combined with tagging and genetics and otolith chemistry. Due to the effects of gear selectivity on the dynamics of Baltic Sea cod, studies on Baltic cod growth is of great concern. Historical developments of fisheries and fish stocks is another area of great interest. I have initiated collaboration work with economists, sociologist and jurists as to develop and investigate concepts such as ecosystem based fisheries management. I have also a long experience in fisheries management and international stock assessments.