Swiss Federal Institute for Environmental Science and Technology, Eawag and Swiss Federal Institute of Technology, ETH, Limnological Research Center, Seestr. 79, Kastanienbaum, 6047 Switzerland
Virginia Polytechnic Institute and State University, Department of Civil and Environmental Engineering, Blacksburg, VA 24061, Blacksburg, VA 24061 United States
Electron Microscopy Centre Zurich (EMEZ), ETH-Zurich, HPM C 15.1, ETH- Hoenggerberg, Zurich, 8093 Switzerland