1. Swiss Federal Research Institute (WSL) Birmensdorf Switzerland
2. Univ. Grenoble AlpesUniv. Savoie Mont BlancCNRSLECALaboratoire d’Écologie Alpine Grenoble France
3. Department of Environmental Systems Science Landscape Ecology Institute of Terrestrial Ecosystems ETH Zürich Zürich Switzerland
4. Institute of Ecology and Key Laboratory for Earth Surface Processes of the Ministry of Education College of Urban and Environmental Sciences Peking University Beijing China