1. Leibniz Centre for Agricultural Landscape Research (ZALF), Müncheberg, Germany
2. Department of Resource Economics, Albrecht Daniel Thaer-Institute of Agricultural and Horticultural Sciences, Humboldt-Universität zu Berlin, Berlin, Germany
3. Department of Crop Production Ecology, Swedish University of Agricultural Sciences, Uppsala, Sweden
4. Division Urban Plant Ecophysiology, Humboldt University of Berlin, Berlin, Germany