1. Photo: Alfredo Bini Water savings of redistributing global crop production Kyle F. Davis*, Antonio Seveso, Maria Cristina Rulli, Paolo D’Odorico EGU 2016 *kfd5zs@virginia.edu

2. Mueller et al. 2012 Nature Food production needs to double by 2050

3. Future water for food Davis et al. (Accepted) Global Environ. Change WATER GHGs NITROGEN LAND Business-As-Usual Diet

4. Future water for food Davis et al. (Accepted) Global Environ. Change WATER GHGs NITROGEN LAND Pescetarian Diet

5. Solutions to reduce water stress Wada et al. 2014 Nature Geosci

6. Unsustainable water use in California Famiglietti et al 2011 GRL

7. Current yield maps 20 tonne ha -1 FAO/IIASA 2012 17 0 Cassava Groundnut Maize Millet Oil Palm Potato Rapeseed Rice Sorghum Soybean Sugar beet Sugarcane Sunflower Wheat Maize (tonne ha -1 )

8. Fitting a spline to interpolate yields 20 tonne ha -1 Davis et al. In prep. 17 0 Maize (tonne ha -1 )

9. Places for potential crop replacement Davis et al. In prep. 17 0 Maize (tonne ha -1 )

10. Criteria for replacement Water demand is less than current water demand Production increases or remains the same Value of production increases or remains the same Davis et al. In prep.

11. Shifting California’s crops 10 6 m 3 H 2 O 7 0 Current Water-Minimized Davis et al. In prep.

12. Substantial water savings Annual water savings = 1.9 km 3 yr -1 or 7% of the state’s irrigation water consumption 10 6 m 3 yr -1 6.5 0 Davis et al. In prep.

13. Food-livelihoods-environment FOOD LIVELIHOODS WATER (and other resources)

14. Future work Apply analysis to other water- stressed areas (e.g., India, Murray-Darling) Examine sensitivity to buffer distance Account for changes in suitability under climate change Combine with other footprints

15. Thank you Kyle Davis – University of Virginia – kfd5zs@virginia.edu