Affiliation: | Swiss Federal Research Institute WSL, Zürcherstrasse 111, CH - 8903 Birmensdorf, Switzerland; Ecophysiology of Plants, Technische Universität München, Am Hochanger 13, D - 85354 Freising-Weihenstephan, Germany; Department of Alpine Timberline Ecophysiology, Federal Research and Training Centre for Forest, Natural Hazards and Landscape, Rennweg 1, A-6020 Innsbruck, Austria |