1. Institute for Environmental Sciences, University of Koblenz-Landau, Fortstraße 7, D-76829 Landau, Germany
2. Eußerthal Ecosystem Research Station, University of Koblenz-Landau, Birkenthalstraße 13, D-76857 Eußerthal, Germany
3. Department of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences, Lennart Hjelms väg 9, SWE-75007 Uppsala, Sweden
4. Wageningen Environmental Research, Wageningen University and Research, Wageningen, The Netherlands
5. Laboratoire d’Hydrologie et de Géochimie de Strasbourg (LHyGeS), Université de Strasbourg/ENGEES, CNRS, 1 rue Blessig, 67084 Strasbourg Cedex, France
6. Aarhus University, Dept. of Bioscience, Vejlsoevej 25, 8600 Silkeborg, Denmark
7. University of South Florida, Department of Integrative Biology, Tampa, Florida, United States
8. Department of Biological Sciences, Environmental Change Initiative, and Eck Institute for Global Health, University of Notre Dame, Notre Dame, Indiana, United States
9. U.S. Geological Survey, New Jersey Water Science Center, Lawrenceville, New Jersey, United States