1. Laboratory of Ecohydrology, School of Architecture, Civil and Environmental Engineering, École Polytechnique Fédérale de Lausanne; CH-1015 Lausanne Switzerland
2. Dept of Molecular and Cellular Biology; Harvard Univ.; Cambridge MA USA
3. Swiss Federal Inst. of Aquatic Science and Technology, Dept of Aquatic Ecology; Dübendorf Switzerland
4. Dept of Evolutionary Biology and Environmental Studies; Univ. of Zürich; Zürich Switzerland
5. Dipto di Ingegneria Civile; Edile ed Ambientale, Univ. di Padova; Padua Italy