Tolsma et al., 1987. J. Ecology, 75: 755-770 Document reference Tolsma, D. J. ; Ernst, W. H. O. ; Verweij, R. A. ; Vooijs, R., 1987. Seasonal variation of nutrient concentrations in a semi-arid savanna ecosystem in Botswana. J. Ecology, 75: 755-770Web http://www.jstor.org/pss/2260204Citation key Tolsma et al., 1987Datasheets Sicklebush (Dichrostachys cinerea)