Global citimpact: 4.71 Researcher at Department of Marine Benthic Ecology and Evolution, Centre for Ecological and Evolutionary Studies, University of Groningen, Nijenborgh 7, 9747 AG Groningen, The ; Department of Ecology & Evolutionary Biology, University of California Santa Cruz, 100 Shaffer Road, Santa Cruz, CA 95060, ; Faculty of Biosciences and Aquaculture, Universitetet i Nordland, Universitetsalleen 11, 8049 Bodø, . Electronic address: .