1. Geomicrobiology, Center for Applied Geosciences, University of Tübingen, Tübingen 72074, Germany
2. Microbial Ecology, Center for Applied Geosciences, University of Tübingen, Tübingen 72074, Germany
3. Eawag, Swiss Federal Institute of Aquatic Science and Technology, Dübendorf CH-8600, Switzerland
4. Institute of Applied Geosciences, Karlsruhe Institute of Technology (KIT), Karlsruhe 76131, Germany
5. Hydrogeology, Center for Applied Geosciences, University of Tübingen, Tübingen 72074, Germany
6. Quantitative Biology Center (QBiC), University of Tübingen, Tübingen 72074, Germany
7. Vietnam National University, Hanoi - Key Laboratory of Analytical Technology for Environmental Quality and Food Safety Control (KLATEFOS), Hanoi 10000, Vietnam