1. Leuphana University of Lüneburg; Institute of Ecology; Scharnhorststr. 1 21335 Lüneburg Germany
2. Martin Luther University Halle-Wittenberg; Institute of Biology/Geobotany and Botanical Garden; Am Kirchtor 1 06108 Halle (Saale) Germany
3. German Centre of Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig; Deutscher Platz 5E 04103 Leipzig Germany
4. Technische Universität Dresden; Institute of General Ecology and Environmental Protection; Pienner Straße 7 01737 Tharandt Germany