By Stefan Siebert¹, Matti Kummu², Miina Porkka², Petra Döll³, Navin Ramankutty⁴, Bridget R. Scanlon⁵

1. Institute of Crop Science and Resource Conservation, University of Bonn, Germany 2. Water & Development Research Group, Aalto University, Finland 3. Institute of Physical Geography, University of Frankfurt (Main), Germany 4. Liu Institute for Global Issues and Institute for Resources, Environment, and Sustainability, University of British Columbia, Canada 5. Bureau of Economic Geology, Jackson School of Geosciences, University of Texas, Austin, USA