s:760:"TI Herbaceous species responses to long-term effects of prescribed fire, grazing and selective tree cutting in the savanna-woodlands of West Africa AU Savadogo, P. AU Tiveau, D. AU Sawadogo, L. AU Tigabu, M. AB Grazing, fire and selective tree cutting are major disturbances that shape species diversity in savanna ecosystems, yet their effects are highly variable. We carried out a factorial experiment with two levels to examine the effects of grazing, fire and selective tree cutting on herbaceous species richness, abundance and diversity on two sites in the Sudanian savanna-woodlands of Burkina Faso for 10 years (1994-2003). The results showed significant inter-annual variation in species richness, abundance and diversity at both sites (p ";