Fig. 5From: Diversity and production in an Afromontane ForestEffects of initial Basal Area (m2 per ha, left) and Richness (expressed as number of tree species per ha, right) on the production (average basal area increment, m2/ha/year) assessed during the period 1972 to 1997. The lines, calculated by a 0.99 nonlinear percentile regression, represent an estimate of the maximum production for different levels of richness and densityBack to article page