1. Institute of Botany, The Czech Academy of Sciences, Třeboň, Czech Republic
2. Department of Botany, Faculty of Science, Charles University, Prague, Czech Republic
3. Faculty of Forestry and Wood Sciences, Czech University of Life Sciences Prague, Prague 6 - Suchdol, Czech Republic
4. Swiss Federal Research Institute WSL, Birmensdorf, Switzerland
5. Department of Geography, University of Cambridge, Downing Place, Cambridge CB2 3EN, UK
6. Forest Biometrics Laboratory, Faculty of Forestry, ‘Stefan cel Mare’ University of Suceava, Str. Universitatii 13, 720229 Suceava, Romania
7. Faculty of Science, University of South Bohemia, České Budějovice, Czech Republic