1. Institute of Marine Research; Flødevigen His Norway
2. Department of Biosciences; Centre for Ecological and Evolutionary Synthesis (CEES); University of Oslo; Blindern Oslo Norway
3. Centre for Coastal Research; University of Agder; Kristiansand Norway
4. Department of Biology; Dalhousie University; Halifax NS Canada
5. Section for Marine Living Resources; National Institute of Aquatic Resources; Technical University of Denmark; Silkeborg Denmark
6. Department for Bioscience; Aarhus University; Aquatic Biology; Aarhus Denmark
7. Department of Marine Sciences - Tjärnö; University of Gothenburg; Strömstad Sweden