1. Technische Univ. Berlin, Dept of Ecology Berlin Germany
2. Univ. de Rennes 1, CNRS‐ECOBIO (Ecosystèmes, Biodiversité, Évolution) UMR 6553 Rennes France
3. Berlin‐Brandenburg Inst. of Advanced Biodiversity Research (BBIB) Berlin Germany
4. Inst. of Landscape Ecology, Univ. of Münster Münster Germany