About the Authors

Rolf Kümmerli


Affiliations Department of Environmental Microbiology, Swiss Federal Institute of Aquatic Science and Technology (Eawag), Dübendorf, Switzerland, Department of Environmental Sciences, Swiss Federal Institute of Technology Zurich, Zürich, Switzerland

Competing Interests

The author has declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: RK. Performed the experiments: RK. Analyzed the data: RK. Wrote the paper: RK.