1. School of Environmental and Forest Sciences , University of Washington, Anderson Hall, Box 352100, Seattle, WA 98115, USA
2. Research group of Plant and Vegetation Ecology , Department of Biology, University of Antwerp, Universiteitsplein 1, Wilrijk BE-2610, Belgium
3. Global Change Research Institute of the Czech Academy of Sciences , Bělidla 986/4a, Brno 60 300, Czech Republic
4. IFER - Institute of Forest Ecosystem Research , Čs. armády 655, 254 01 Jílové u Prahy, Czech Republic
5. Department of Ecosystem Biology , Faculty of Science, University of South Bohemia in České Budějovice, Branišovská 1645/31a, 370 05 České Budějovice, Czech Republic
6. Environmental Measuring Systems s.r.o. , Kocianka 85/39, 612 00 Brno, Czech Republic
7. School of Forest , Fisheries, and Geomatics Sciences, 134 Newins-Ziegler Hall, University of Florida, Gainesville, Florida, 32611-0410, USA
8. Chair of Ecophysiology of Plants , Life Science Center Weihenstephan, Technische Universitä München, Hans-Carl-von-Carlowitz-Platz 2, 85354 Freising, Germany
9. Mendel University in Brno , Zemedelska 3, Brno 613 00, Czech Republic