1. Department of Biology, Centre of Excellence Plants and Ecosystems, University of Antwerp, Campus Drie Eiken, Universiteitsplein 1, 2610 Wilrijk, Belgium
2. Department of Yield and Silviculture, Slovenian Forestry Institute, Vecna pot 2, 1000 Ljubljana, Slovenia
3. ECOBIO (Ecosystèmes, Biodiversité, Evolution), Université de Rennes, Campus Beaulieu, CS 74205, 35042 Rennes Cedex, Rennes, France
4. Centre for Research on Ecology and Forestry Applications (CREAF), 08290, Cerdanyola del Vallès, Barcelona, Spain
5. Faculty of Agro-Bio Tech, University of Liège, Passage des Déportés 2, 5030 Gembloux, Belgium
6. Dendro-Sciences Research Unit, Subunit Palaeo-Ecology, Swiss Federal Research Institute WSL, Zürcherstrasse 111, 8903 Birmensdorf, Switzerland
7. Norwegian Institute of Bioeconomy Research, Postboks 115, NO-1431 Ås, Norway
8. Global Ecology Unit CREAF-CSIC-UAB, CSIC, Bellaterra, Barcelona, Spain
9. UGent-Woodlab, Laboratory of Wood Technology, Department of Environment, Faculty of Bioscience Engineering, University of Ghent, Coupure Links 653, B-9000 Ghent, Belgium