Figure 3: Elevational species richness at the community level.

Species richness of vascular plants (a) and animals (c) along the elevational gradient of Mt. Kilimanjaro. Lower panels show trend lines for the number of species, families and orders of vascular plants (b) and animals (d) along the elevational gradient. All trend lines were calculated using generalized additive models (N=30 and N=29 in plants and animals, respectively; all trends were significant at P<0.001). Please see Fig. 1 for credits to the authors of the original plant and animal images.