1. Leibniz Centre for Agricultural Landscape Research (ZALF), Eberswalder Str. 84, 15374 Müncheberg, Germany
2. Department of Geography, Faculty II, University of Vechta, Driverstraße 22, 49377 Vechta, Germany
3. State Office for Environment of the Federal State of Brandenburg (LfU), Department for Large Nature Reserves and Regional Development, UNESCO Biosphere Reserve Spreewald, Schulstrasse 9, 03222 Lübbenau/Spreewald, Germany