Elevational Distribution and Conservation Biogeography of Phanaeine Dung Beetles (Coleoptera: Scarabaeinae) in Bolivia
Figure 5
Area-controlled relationships between phanaeine species richness and elevation for elevationally variable z-values based on empirical phanaeine z-values adjusted for the corresponding elevational variation in empirical z-values for birds reported by Rahbek
[3]. Blue dots/line: all South American countries except Chile (grouping A), z = 0.382. Red crosses/line: all South American countries except Chile and Brazil (grouping B), z = 0.367. Green triangles/line: only the tropical Andes countries Bolivia, Colombia, Ecuador and Peru (grouping C), z = 0.299. Curves are based on the interpolated number of species and area of each elevational zone in Bolivia, setting area to 50 000 km2. See Materials and Methods for details. Curves were fitted by distance-weighted least squares smoothing.