1. Centre for Coastal Research (CCR) Department of Natural Sciences University of Agder Post Box 422 Kristiansand 4604 Norway
2. Institute of Marine Research His 4817 Norway
3. Centre of Marine and Environmental Research of Madeira (CIIMAR‐Madeira) Edif. Madeira Tecnopolo Caminho da Penteada Funchal 9020‐105 Portugal
4. Centre for Ecological and Evolutionary Syntheses (CEES) Department of Biosciences University of Oslo PO Box 1066 Blindern Oslo 0316 Norway