1. German Environment Agency, Wörlitzer Platz 1, 06844 Dessau-Roßlau, Germany
2. Geography Department, Faculty of Mathematics and Natural Sciences, Humboldt-Universität zu Berlin, Unter den Linden 6, 10099 Berlin, Germany
3. Urban Ecosystem Science, Institute of Ecology, Faculty VI—Planning Building Environment, Technische Universität Berlin, Straße des 17. Juni 135, 10623 Berlin, Germany
4. School of Business and Economics, Humboldt-Universität zu Berlin, Unter den Linden 6, 10099 Berlin, Germany