White rhinoceroses (rhinos) through their bulk grazing activities play key ecological roles that can benefit other species including people. They, however, have disappeared from many African ecosystems in response to various global environmental change drivers, the most significant of which are illegal harvesting, habitat destruction and fragmentation. We provide an historical account for white rhinos and specifically focus on the plight of two subspecies, the northern (Ceratotherium simum cottoni) and southern white rhino (C. s. simum). These subspecies have contrasting outcomes from which we assess key lessons and insights that can guide retaining and restoring the socio-ecological role of white rhinos while enhancing their conservation status. Southern white rhinos (SWR) distributed south of the Zambezi River, were virtually extinct around the 1900s, while northern white rhinos (NWR) were most numerous then in north-eastern Democratic Republic of Congo, southern Sudan, Uganda and the south-eastern Central Africa Republic. Overzealous harvesting, both legally and illegally devastated even the NWR and by the 1970s the NWR were declining, while innovative and dedicated management were recovering SWR in South Africa. By 2022 there were only two female NWRs remaining with reproductive technologies at the forefront to bio-rescue the NWR subspecies. There, however, were 16,801 SWRs then. These contrasting outcomes had common features. Periods of declining SWRs had high levels of corruption and human conflict, patterns like those identified for periods of declining NWRs. Periods of SWR increase are linked with good governance, innovative biological management, and in recent times robust partnerships. Non-conventional tactics have also served well—out-of-range SWRs make key contributions to their conservation status. Retaining global benefits from rhinos recognises the importance of recovering the conservation status of the subspecies, but it is the socio-ecological roles that rhinos may play as native, ecological equivalents or even novel elements in ecosystems that may help to retain ecological resilience that will contribute to the aspirations embedded in various global sustainability goals.

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White Rhino: Contrasting Conservation Outcomes of Two Subspecies

  • David Balfour,
  • Kes Hillman-Smith,
  • Herbert H. T. Prins,
  • Thomas B. Hildebrandt,
  • Jan Stejskal,
  • Susanne Holtze,
  • Kees Rookmaaker,
  • Sam M. Ferreira

摘要

White rhinoceroses (rhinos) through their bulk grazing activities play key ecological roles that can benefit other species including people. They, however, have disappeared from many African ecosystems in response to various global environmental change drivers, the most significant of which are illegal harvesting, habitat destruction and fragmentation. We provide an historical account for white rhinos and specifically focus on the plight of two subspecies, the northern (Ceratotherium simum cottoni) and southern white rhino (C. s. simum). These subspecies have contrasting outcomes from which we assess key lessons and insights that can guide retaining and restoring the socio-ecological role of white rhinos while enhancing their conservation status. Southern white rhinos (SWR) distributed south of the Zambezi River, were virtually extinct around the 1900s, while northern white rhinos (NWR) were most numerous then in north-eastern Democratic Republic of Congo, southern Sudan, Uganda and the south-eastern Central Africa Republic. Overzealous harvesting, both legally and illegally devastated even the NWR and by the 1970s the NWR were declining, while innovative and dedicated management were recovering SWR in South Africa. By 2022 there were only two female NWRs remaining with reproductive technologies at the forefront to bio-rescue the NWR subspecies. There, however, were 16,801 SWRs then. These contrasting outcomes had common features. Periods of declining SWRs had high levels of corruption and human conflict, patterns like those identified for periods of declining NWRs. Periods of SWR increase are linked with good governance, innovative biological management, and in recent times robust partnerships. Non-conventional tactics have also served well—out-of-range SWRs make key contributions to their conservation status. Retaining global benefits from rhinos recognises the importance of recovering the conservation status of the subspecies, but it is the socio-ecological roles that rhinos may play as native, ecological equivalents or even novel elements in ecosystems that may help to retain ecological resilience that will contribute to the aspirations embedded in various global sustainability goals.