1. Leibniz-Institute of Freshwater Ecology and Inland Fisheries, Department Ecohydrology, Berlin, Germany
2. Humboldt University Berlin, Geography Department, Berlin, Germany
3. Stockholm University, Department of Environmental Science and Analytical Chemistry, Stockholm, Sweden
4. Eawag, Swiss Federal Institute of Aquatic Science and Technology, Department of Water Resources and Drinking Water, Dübendorf, Switzerland
5. University of Neuchâtel, Centre of Hydrogeology and Geothermics, Neuchâtel, Switzerland
6. University of Padova, Department of ICEA and International Center for Hydrology, Padua, Italy
7. Technical University of Berlin, Chair of Water Quality Engineering, Berlin, Germany
8. ETH Zürich, Institute of Biogeochemistry and Pollutant Dynamics, Zürich, Switzerland