1. School of Public and Environmental Affairs; Indiana University; Bloomington Indiana USA
2. Department of Hydrogeology; Helmholtz Centre for Environmental Research-UFZ; Leipzig Germany
3. Department of Geological Sciences; Michigan State University; East Lansing Michigan USA
4. School of Geography, Earth and Environmental Sciences; University of Birmingham; Birmingham Edgbaston UK
5. GFZ German Research Centre for Geosciences, Helmholtz Centre Potsdam, Telegrafenberg; Potsdam Germany
6. Center for Applied Geoscience, University of Tübingen; Tübingen Germany
7. IRSTEA, UR-MALY, Centre de Lyon-Villeurbanne; Villeurbanne France
8. Department of Ecohydrology; Leibniz-Institute of Freshwater Ecology and Inland Fisheries; Berlin Germany