1. Institute of Marine Research (IMR); Tromsø Norway
2. Norwegian Institute for Nature Research (NINA); Trondheim Norway
3. Department of Arctic and Marine Biology; Faculty of Biosciences, Fisheries and Economics; The Arctic University of Norway; Tromsø Norway
4. Department of Marine Sciences and Applied Biology; University of Alicante; Alicante Spain
5. Department of Ecology of Marine Resources; Mediterranean Institute for Advanced Studies; Esporles Mallorca Spain
6. Institute of Marine Research (IMR); Bergen Norway