1. Department of Ecology and Environmental Science, Umeå University, Sweden
2. Forest Research Institute, Université du Québec en Abitibi-Témiscamingue, Canada
3. Department of Environmental Systems Science, ETH Zurich, Switzerland
4. Department of Water Resources and Drinking Water, Eawag, Switzerland
5. CRETUS, EcoPast (GI-1553), Faculty of Biology, University of Santiago de Compostela, Campus Sur, Spain