1. Centre for Environmental Sciences Hasselt University Martelarenlaan 42 3500 Hasselt Belgium
2. Environmental Biology Department Institute of Environmental Sciences, CML Leiden University Einsteinweg 2 2333 CC Leiden the Netherlands
3. Chinese Academy of Sciences South China Botanical Garden 510650 Guangzhou China
4. Institute of Ecology and Earth Sciences University of Tartu Liivi 2 50409 Tartu Estonia
5. Natural History Museum University of Tartu Vanemuise 46 51003 Tartu Estonia
6. School of Biological Sciences University of Western Australia 35 Stirling Highway Crawley WA 6009 Australia