David N. Thomas is based at the University of Helsinki where he is the Professor of Arctic Ecosystem Research in the Faculty of Biological and Environmental Sciences. Previously (1996 to 2020) he was at Bangor University, U.K., where from 2006 he held the Chair of Marine Biology in the School of Ocean Sciences. From 2009 to 2013 he also held an Academy of Finland Distinguished Professorship at the Finnish Environment Institute (SYKE).