1. Viktoria Wegewitz, Popitzweg 10 B, 13627 Berlin, Germany; E-mail:
2. Christoph Muster, Neukamp 29, 18581 Putbus, Germany; E-mail:
3. Jonas J. Astrin, Leibniz Institute for the Analysis of Biodiversity Change, Museum Koenig, Adenauerallee 127, 53113 Bonn, Germany; E-mail: