1. Institut für Biologie, Plant Ecology; Freie Universität Berlin; Berlin 14195 Germany
2. Department of Biology; Xavier University; 3800 Victory Parkway Cincinnati Ohio 45207 USA
3. Institut für Biologie, Applied Zoology/Animal Ecology; Freie Universität Berlin; Berlin 12163, Germany
4. Berlin-Brandenburg Institute of Advanced Biodiversity Research (BBIB); Berlin 14195 Germany