1. Graduate School of Sciences and Technologies University of Tsukuba Tsukuba Ibaraki Japan
2. Department of Environmental Microbiology Swiss Federal Institute of Aquatic Science and Technology (Eawag) Dübendorf Switzerland
3. Division of Environmental Engineering, Faculty of Engineering Hokkaido University Sapporo Hokkaido Japan
4. Faculty of Life and Environmental Sciences University of Tsukuba Tsukuba Ibaraki Japan
5. Microbiology Research Center for Sustainability University of Tsukuba Tsukuba Ibaraki Japan
6. Institute of Ecology and Evolution University of Bern Bern Switzerland