1. WSL Swiss Federal Research Institute, Dendro Sciences Unit, Zürcherstr. 111, CH‐8903 Birmensdorf, Switzerland
2. Laboratory of Tree‐Ring Research, University of Arizona, 105 West Stadium, Tucson, AZ 85721‐0058, USA
3. School of Natural Resources, University of Arizona, Biological Sciences East, Tucson, AZ 85721‐0058, USA
4. Departamento de Botánica, Universidade de Santiago de Compostela, Escola Politécnica Superior, Campus de Lugo, E‐27002 Lugo, Spain
5. WSL Swiss Federal Research Institute, Forest Dynamic Unit, Zürcherstr. 111, CH‐8903 Birmensdorf, Switzerland
6. Forest Ecology and Forest Management Group, Center for Ecosystem Studies, Wageningen University, PO Box 47, 6700 AA Wageningen, The Netherlands
7. Department of Wood Science, University of Hamburg, Leuschnerstr. 91, D‐21031 Hamburg, Germany