FIGURE 1.

Ranges of distribution and recent demography of the northern and southern white rhinoceros. (a) The historical distribution of the NWR (Ceratotherium simum cottoni) and the SWR (Ceratotherium simum simum) (map adapted from Emslie & Brooks, 1999). (b) Recent demographic histories of the NWR and the SWR according to census size estimates reported in the literature (Emslie [IUCN SSC African Rhino Specialist Group], 2020; Emslie & Brooks, 1999; Rookmaaker, 2000). Absolute values prior to these dates do not exist, but population sizes are known to have been larger from historical records (Emslie [IUCN SSC African Rhino Specialist Group], 2020; Emslie & Brooks, 1999; Rookmaaker, 2000). Vertical shades indicate approximate timing of bottlenecks. Horizontal bars indicate our sampling time windows, which in NWRpre and SWRpre refer to dates of collection, and in NWRpost and SWRpost refer to dates of birth