Key points are not available for this paper at this time.
Dougill, A. J., E. D. G. Fraser, and M. S. Reed. 2010. Anticipating vulnerability to climate change in dryland pastoral systems: using dynamic systems models for the Kalahari. Ecology and Society 15(2): 17. https://doi.org/10.5751/ES-03336-150217
Dougill et al. (Fri,) studied this question.