Fig. 6From: Exploring the floristic diversity of tropical AfricaFloristic turnover rates across tropical Africa. Values based on adaptive resolution sampling unit (explanation see text). Pairwise floristic similarity is computed as 1–βsim turnover index using two values of μ (see section in Methods and Additional file 1). a Meso-scale floristic turnover rate with μ = 1°; b Large-scale turnover rate with μ = 2°. Dashed lines represent the limits for tropical Africa as defined in our study. Maps based on georeferenced herbarium records, silica gel samples and plot dataBack to article page