1. Polar Terrestrial Environmental Systems Alfred Wegner Institute Helmholtz Centre for Polar and Marine Research Potsdam Germany
2. Institute of Environmental Science and Geography University of Potsdam Potsdam Germany
3. Institute of Biochemistry and Biology University of Potsdam Potsdam Germany
4. Alpine Paleoecology and Human Adaptation Group (ALPHA) State Key Laboratory of Tibetan Plateau Earth System Resources and Environment (TPESRE) Institute of Tibetan Plateau Research Chinese Academy of Sciences Beijing China
5. Max Planck Institute for Meteorology Hamburg Germany
6. Department of Biological Sciences University of Bergen and Bjerknes Centre for Climate Research Bergen Norway