About the Authors

Yama Tomonaga

tomonaga@eawag.ch

Affiliations Eawag, Swiss Federal Institute of Aquatic Science and Technology, Department of Water Resources and Drinking Water, Duebendorf, Switzerland, Institute of Biogeochemistry and Pollutant Dynamics, Swiss Federal Institute of Technology (ETH), Zurich, Switzerland

Matthias S. Brennwald

Affiliation Eawag, Swiss Federal Institute of Aquatic Science and Technology, Department of Water Resources and Drinking Water, Duebendorf, Switzerland

David M. Livingstone

Affiliation Eawag, Swiss Federal Institute of Aquatic Science and Technology, Department of Water Resources and Drinking Water, Duebendorf, Switzerland

Geneviève Tomonaga

Affiliation Ergomotion, Losone, Switzerland

Rolf Kipfer

Affiliations Eawag, Swiss Federal Institute of Aquatic Science and Technology, Department of Water Resources and Drinking Water, Duebendorf, Switzerland, Institute of Biogeochemistry and Pollutant Dynamics, Swiss Federal Institute of Technology (ETH), Zurich, Switzerland, Institute of Geochemistry and Petrology, Swiss Federal Institute of Technology (ETH), Zurich, Switzerland

Competing Interests

The authors have the following interests: co-author G. Tomonaga is co-owner of Ergomotion. The presented study is not within the scope of the activities of Ergomotion. This does not alter our adherence to all the PLoS ONE policies on sharing data and materials.

Author Contributions

Conceived and designed the experiments: YT MSB. Performed the experiments: YT MSB GT. Analyzed the data: YT MSB DML RK. Contributed reagents/materials/analysis tools: YT MSB GT. Wrote the paper: YT MSB DML RK.