1. Department of Natural Sciences; Faculty of Engineering and Science; University of Agder; Post Box 422, 4604 Kristiansand Norway
2. Institute of Marine Research; Flødevigen, 4817 His Norway
3. Centre of Marine and Environmental Research (CIIMAR/CIMAR); University of Porto; 4050-123 Porto Portugal
4. Department of Biosciences; Centre for Ecological and Evolutionary Syntheses (CEES); University of Oslo; PO Box 1066 Blindern, 0316 Oslo Norway
5. College of Earth, Ocean, and Atmospheric Sciences; Oregon State University; 104 CEOAS Administration Building Corvallis Oregon 97331-5503