Kerstin Johannesson,^* Katarzyna Smolarz,^** Mats Grahn,^*** Carl André<sup>****


*</sup>Kerstin Johannesson () is Professor at the University of Gothenburg and the Department of Marine Ecology—Tjärnö. Her research focuses on conservation genetics and evolutionary ecology of marine invertebrates and algae and she coordinates the Linnaeus Centre of Marine Evolutionary Research (www.cemeb.science.gu.se), and the BONUS research programme BaltGene. Address: Department of Marine Ecology-Tjärnö, University of Gothenburg, 452 96 Strömstad, Sweden. e-mail: Kerstin.Johannesson@marecol.gu.se
^**Katarzyna Smolarz is a PhD in marine biology and toxicology at the Institute of Oceanography and Geography at Gdansk University (Gdansk, Poland). Presently she is a postdoc at the Centre for the Baltic and East European Studies at Södertörns University. Her focus is on environmental risk assessment in the Baltic Sea, in particular impact of deposited contaminants on marine invertebrates. Address: Centre for Baltic and East European Studies, Södertörn University, 141 89 Huddinge, Sweden. e-mail: katarzyna.smolarz@sh.se
^***Mats Grahn is a Senior Lecturer in molecular ecology at Södertörn University and does research on genetic variation and adaptation in relation to environmental variation. Address: School of Life Sciences, Södertörn University, 141 89 Huddinge, Sweden. e-mail: mats.grahn@sh.se
^****Carl André is Professor at University of Gothenburg and the Department of Marine Ecology—Tjärnö (www.marecol.gu.se). He has an interest in understanding the processes that drive genetic structure in marine organisms. Address: Department of Marine Ecology-Tjärnö, University of Gothenburg, 452 96 Strömstad, Sweden. e-mail: Carl.Andre@marecol.gu.se