1. Department of Paleoecology Institute of Botany of the Czech Academy of Sciences Brno & Průhonice Czech Republic
2. Department of Botany and Zoology Faculty of Science Masaryk University Brno Czech Republic
3. Department of Botany Faculty of Science Charles University Praha Czech Republic
4. Department of Vegetation Ecology Institute of Botany of the Czech Academy of Sciences Brno Czech Republic
5. Center for Theoretical Study Charles University and the Czech Academy of Sciences Praha Czech Republic