Nutrient limitation on above-ground grass production in four savanna types along the Kalahari Transect

Lydia R. O’Halloran, H. Shugart, Lixin Wang, Kelly Caylor, S. Ringrose, B. Kgope. "Nutrient limitation on above-ground grass production in four savanna types along the Kalahari Transect". Journal of Arid Environments (2009). doi:10.1016/j.jaridenv.2009.08.012