1 Department of Geography, Johannes Gutenberg University, Mainz, Germany. reinig@geo.uni-mainz.de.
2 Laboratory of Ion Beam Physics, ETH Zurich, Zurich, Switzerland.
3 Leibniz-Zentrum für Archäologie-MONREPOS Archaeological Research Centre and Museum for Human Behavioural Evolution, Neuwied, Germany.
4 Institute of Ancient Studies, Department of Prehistoric and Protohistoric Archaeology, Johannes Gutenberg University, Mainz, Germany.
5 Key Laboratory of Western China's Environmental Systems (Ministry of Education), College of Earth and Environmental Sciences, Lanzhou University, Lanzhou, China.
6 Department of Geography, University of Cambridge, Cambridge, UK.
7 Forest Dynamics/Dendrosciences, Swiss Federal Research Institute WSL, Birmensdorf, Switzerland.
8 Alfred Wegener Institute, Helmholtz Center for Polar and Marine Research, Bremerhaven, Germany.
9 Department of Geosciences, University of Bremen, Bremen, Germany.
10 Department of Forest and Conservation Sciences, University of British Columbia, Vancouver, British Columbia, Canada.
11 Department of Geography, Birkbeck University of London, London, UK.
12 Department of Geography, Johannes Gutenberg University, Mainz, Germany.
13 Institute of Earth Sciences, Heidelberg University, Heidelberg, Germany.
14 Heidelberg Center for the Environment, Heidelberg University, Heidelberg, Germany.
15 Institute of Biology (190a), University of Hohenheim, Stuttgart, Germany.
16 Silviculture & Forest Growth and Yield, University of Applied Forest Sciences, Rottenburg am Neckar, Germany.
17 Institute of Applied Botanics and Volcanic Biology, Universität Duisburg-Essen, Essen, Germany.
18 Climate and Environmental Physics, Physics Institute, Oeschger Centre for Climate Change Research, University of Bern, Bern, Switzerland.
19 Global Change Research Institute of the Czech Academy of Sciences (CzechGlobe), Brno, Czech Republic.
20 Department of Geography, Faculty of Science, Masaryk University, Brno, Czech Republic.