Klement Tockner is full professor for Aquatic Ecology at the Free University Berlin and director of the Leibniz-Institute of Freshwater Ecology and Inland Fisheries (IGB). He received a PhD from the University of Vienna (1993) and a Titulary Professorship at ETH (2005). He has special expertise on freshwater biodiversity, ecosystem functioning, and river and wetland restoration and management. He is Editor-in-Chief of the journal Aquatic Sciences and Subject Editor of the journal Ecosystems. He has published more than 200 scientific papers including 110 ISI papers. In 2009, he edited a comprehensive book on European Rivers (Rivers of Europe, Elsevier). Klement Tockner has successfully managed large inter- and transdisciplinary projects; he coordinates the EC-funded project BioFresh (www.freshwaterbiodiversity.eu). He is member of several scientific committees and advisory boards including the crosscutting group on freshwater biodiversity of DIVERSITAS, GEO-BON and the Austrian Academy of Sciences.