1. Conservation Biology, UFZ – Helmholtz Centre for Environmental Research, Permoserstr. 15, D‐04318 Leipzig, Germany;
2. Disturbance Ecology and Vegetation Dynamics, University of Bayreuth, D‐95440 Bayreuth, Germany;
3. Biogeography, University of Bayreuth, D‐95440 Bayreuth, Germany;
4. Soil Ecology, GSF – National Research Center for Environment and Health, Ingolstädter Landstraße 1, D‐85764 Neuherberg, Germany