Fig. 1. Global variation in threatened species richness, having accounted for total species richness.

The maps show the mean residuals from 10 global scale models of threatened species richness when explained by total species richness, for a terrestrial vertebrates, and four separate taxonomic groups: b amphibians, c reptiles, d birds and e mammals. The colour scale indicates model residuals in terms of the number of threatened species and uses Jenks natural breaks⁸¹ to determine the break points. Note the scales differ between a, and b–e. Grey indicates areas where there are no species classified as threatened. Model performance was moderate (Table 1 and Supplementary Table 2). Source data are provided as a Source Data file.