1. Lower Saxony Institute for Historical Coastal Research; Viktoriastr. 26/28; 26382; Wilhelmshaven; Germany
2. Institute of Botany; Chinese Academy of Sciences; Xiangshan Nanxincun 20; 100093; Beijing; China
3. Environmental Change Research Centre; Department of Geography; University College London; Gower Street; London; WC1E 6BT; UK
4. Institute of Earth and Environmental Sciences; University of Potsdam; Karl-Liebknecht-Str. 24; 14476; Potsdam-Golm; Germany