1. Institute of Groundwater Ecology, Helmholtz Zentrum München, Ingolstadter Landstrasse 1 85764 Neuherberg, Germany
2. Chair of Analytical Chemistry and Water Chemistry, Technical University of Munich, Lichtenbergstraße 4, 85748, Garching, Germany
3. Center for Applied Geoscience, University of Tübingen, Schnarrenbergstraße 94, 72076, Tübingen, Germany
4. Chair of Ecological Microbiology, University of Bayreuth, Dr.-Hans-Frisch-Straße 1-3, 95448 Bayreuth, Germany
5. School of Life Sciences, Technical University of Munich, Alte Akademie 8, 85354 Freising, Germany
6. Department of Functional and Evolutionary Ecology, University of Vienna, Djerassiplatz 1, 1030 Vienna, Austria
7. Department of Environmental Microbiology, UFZ─Helmholtz Centre for Environmental Research, Permoserstr. 15, 30418 Leipzig, Germany