1. Division of Conservation Biology, Institute of Ecology and Evolution University of Bern Bern Switzerland
2. Division of Forest Sciences, School of Agricultural, Forest and Food Sciences Bern University of Applied Sciences Bern Switzerland
3. Institute of Biological Sciences, Faculty of Sciences Siedlce University of Natural Sciences and Humanities Siedlce Poland
4. Flächenagentur Baden‐Württemberg GmbH Ostfildern Germany