1. Department of Aquatic Ecotoxicology, Faculty of Biological Sciences; Goethe University; Frankfurt am Main; Germany
2. Swiss Center for Applied Ecotoxicology, Swiss Federal Institute of Aquatic Science and Technology/Swiss Federal Institute of Technology; Dübendorf; Switzerland
3. Federal Institute of Hydrology; Koblenz; Germany
4. Systemic Physiological and Ecotoxicological Research, Department of Biology, University of Antwerp; Antwerp; Belgium