Fig. 3From: Threatened species richness along a Himalayan elevational gradient: quantifying the influences of human population density, range size, and geometric constraintsRelationship between threatened species richness with a elevation; b population density; c species range sizes and d area and along 100-m zone elevational gradient in Nepal Himalaya. The dependent variable, threatened species richness, was log transformed. The solid line represents a cubic regression spline fitted by GAM. Dashed lines represent standard errorsBack to article page