Pål Næverlid Sævik¹, Morten Dahlberg Skogen², Lars Asplin³, Kjell Gundersen², Solfrid Sætre S. Hjøllo² and Helena Hauss⁴, (1)University of Bergen, Bergen, NORWAY, (2)Institute of Marine Research, Bergen, Norway, (3)Institute of Marine Research Bergen, Bergen, Norway, (4)NORCE Norwegian Research Centre, Bergen, Norway