How and why lineages speciate and go extinct is critical to understanding the evolution of biodiversity. Accurate phylogenies permit tests of differential patterns among lineages. This is the first work to apply phylogenies to large-scale patterns of threat as well as to searching for biological correlates of extinction.
Lines are least-squares regressions for each order.
Species that are at a significantly higher or lower level of threat than predicted by the model are labeled. Click here for a full list of the species names. Predicting extinction risk in declining species. Species differences in geographic ranges signify patterns of rarity, extinction, species richness, abundance, and general trends in biodiversity. Thus, it is necessary to have a taxonomically complete and analytically rigorous database on geographic range.