1. Department of History Stockholm University Stockholm Sweden
2. Bolin Centre for Climate Research Stockholm University Stockholm Sweden
3. Swedish Collegium for Advanced Study Uppsala Sweden
4. Chair of Forest Growth and Dendroecology Institute of Forest Sciences, Albert Ludwig University of Freiburg Freiburg Germany
5. Department of Botany University of Innsbruck Innsbruck Austria
6. Institute of History, University of Bern Bern Switzerland
7. Oeschger Centre for Climate Change Research University of Bern Bern Switzerland