1. Department of Aquatic Ecotoxicology, Goethe University Frankfurt am Main, Max-von-Laue Strasse 13, 60438 Frankfurt am Main, Germany
2. Federal Institute of Hydrology, Am Mainzer Tor 1, 56068 Koblenz, Germany
3. Institute for Social-Ecological Research, Hamburger Allee 45, 60486 Frankfurt am Main, Germany
4. Department of Biology, Norwegian University of Science and Technology, 5 Hogskoleringen, 7491 Trondheim, Norway