1. Bavarian Forest National Park; Freyunger Str. 2 DE-94481 Grafenau Germany
2. Univ. of Toronto - Scarborough; Dept of Biological Sciences; 1265 Military Trail Toronto ON M1C 1A4 Canada
3. Technical Univ. of Munich; Emil-Ramann Strasse 2 DE-85354 Freising Germany
4. Bavarian State Inst. for Forestry; Hans-Carl-von-Carlowitz-Platz 1 DE-85354 Freising Germany
5. AELF Tirschenreuth, Bereich Forsten; Wunsiedler Str. 15 DE-95478 Kemnath Germany
6. Markranstädterstrasse 33 DE-04229 Leipzig Germany
7. Life and Environmental Sciences, Univ. of Iceland; Sturlugata 7 IS-101 Reykjavik Iceland
8. Inst. für Pflanzenwissenschaften, Univ. of Graz; Holteigasse 6 AT-8010 Graz Österreich
9. Terrestrial Ecology Research Group, Dept of Ecology and Ecosystem Management; Center for Food and Life Sciences Weihenstephan, Technische Univ. München; Hans-Carl-von-Carlowitz-Platz 2 DE-85354 Freising-Weihenstephan Germany