1. Department of Ecological Modelling; Helmholtz-Centre for Environmental Research-UFZ; Permoserstrasse 15 D-04318 Leipzig Germany
2. German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig; Deutscher Platz 5e D-04103 Leipzig Germany
3. Institute for Environmental Systems Research; University of Osnabrück; Barbarastrasse 12 D-49076 Osnabrück Germany