The effect of removing a dividing fence between two populations of black rhinos
Ol Pejeta Ranching Limited in central Kenya was a 36,500 ha cattle ranch that included the 9,700 ha Sweetwaters Game Reserve, a sanctuary for black rhinos (Diceros bicornis). A change of ownership in 2004 led to an extension of the reserve to create Ol Pejeta Conservancy. By the end of 2006, the ol...
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IUCN
2010-06-01
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| Series: | Pachyderm |
| Online Access: | https://pachydermjournal.org/index.php/pachyderm/article/view/211 |
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| author | Felix Patton M.S. Mulama S. Mutisya P.E. Campbell |
| author_facet | Felix Patton M.S. Mulama S. Mutisya P.E. Campbell |
| author_sort | Felix Patton |
| collection | DOAJ |
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Ol Pejeta Ranching Limited in central Kenya was a 36,500 ha cattle ranch that included the 9,700 ha Sweetwaters Game Reserve, a sanctuary for black rhinos (Diceros bicornis). A change of ownership in 2004 led to an extension of the reserve to create Ol Pejeta Conservancy. By the end of 2006, the old reserve was reaching its Maximum Sustainable Yield of 45 rhinos, while at the beginning of 2007, 27 black rhinos were introduced into the new area. In order to reduce the density of rhinos in the old area, the fence dividing the two areas was removed, although opinions varied as to the likelihood of success of this action. Results of rhino movements between the two areas are presented. After 18 months, there was little movement of rhinos either from the old into the new area or from the new into the old area. Two sub-adult females were translocated from the old to the new area and settled close to their release sites.
Key words: conservation, dispersal, maximum sustainable yield
Ol Pejeta Ranching Limited au Kenya Central était un ranch de 36.500 ha qui comprenait la Réserve Naturelle Sweetwaters de 9.700 ha, un sanctuaire pour les rhinocéros noirs (Diceros bicornis). Un changement de propriétaire en 2004 a conduit à l’élargissement de la réserve pour créer la Conservation d’Ol Pejeta. Vers la fin de 2006, la vieille réserve atteignait son rendement maximum durable de 45 rhinocéros, alors qu’au début de 2007, on avait introduit 27 rhinocéros noirs dans la nouvelle aire. Pour réduire la densité de rhinocéros dans la vieille aire, on a enlevé la clôture qui divisait les deux aires, malgré la différence d’opinions concernant la probabilité de succès de cette action. On présente les résultats des mouvements de rhinocéros entre les deux aires. Après 18 mois, il y avait peu de mouvement de rhinocéros ou bien de la vieille aire vers la nouvelle aire ou vice-versa. Deux femelles sous-adultes étaient transférées de la vieille aire à la nouvelle aire et se sont installées près de leurs sites de relâchement.
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| format | Article |
| id | doaj-art-24611a630b2a415e8e99cd4cbff90f5b |
| institution | OA Journals |
| issn | 1026-2881 1683-5018 |
| language | English |
| publishDate | 2010-06-01 |
| publisher | IUCN |
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| series | Pachyderm |
| spelling | doaj-art-24611a630b2a415e8e99cd4cbff90f5b2025-08-20T01:56:56ZengIUCNPachyderm1026-28811683-50182010-06-014710.69649/pachyderm.v47i.211The effect of removing a dividing fence between two populations of black rhinosFelix PattonM.S. MulamaS. MutisyaP.E. Campbell Ol Pejeta Ranching Limited in central Kenya was a 36,500 ha cattle ranch that included the 9,700 ha Sweetwaters Game Reserve, a sanctuary for black rhinos (Diceros bicornis). A change of ownership in 2004 led to an extension of the reserve to create Ol Pejeta Conservancy. By the end of 2006, the old reserve was reaching its Maximum Sustainable Yield of 45 rhinos, while at the beginning of 2007, 27 black rhinos were introduced into the new area. In order to reduce the density of rhinos in the old area, the fence dividing the two areas was removed, although opinions varied as to the likelihood of success of this action. Results of rhino movements between the two areas are presented. After 18 months, there was little movement of rhinos either from the old into the new area or from the new into the old area. Two sub-adult females were translocated from the old to the new area and settled close to their release sites. Key words: conservation, dispersal, maximum sustainable yield Ol Pejeta Ranching Limited au Kenya Central était un ranch de 36.500 ha qui comprenait la Réserve Naturelle Sweetwaters de 9.700 ha, un sanctuaire pour les rhinocéros noirs (Diceros bicornis). Un changement de propriétaire en 2004 a conduit à l’élargissement de la réserve pour créer la Conservation d’Ol Pejeta. Vers la fin de 2006, la vieille réserve atteignait son rendement maximum durable de 45 rhinocéros, alors qu’au début de 2007, on avait introduit 27 rhinocéros noirs dans la nouvelle aire. Pour réduire la densité de rhinocéros dans la vieille aire, on a enlevé la clôture qui divisait les deux aires, malgré la différence d’opinions concernant la probabilité de succès de cette action. On présente les résultats des mouvements de rhinocéros entre les deux aires. Après 18 mois, il y avait peu de mouvement de rhinocéros ou bien de la vieille aire vers la nouvelle aire ou vice-versa. Deux femelles sous-adultes étaient transférées de la vieille aire à la nouvelle aire et se sont installées près de leurs sites de relâchement. https://pachydermjournal.org/index.php/pachyderm/article/view/211 |
| spellingShingle | Felix Patton M.S. Mulama S. Mutisya P.E. Campbell The effect of removing a dividing fence between two populations of black rhinos Pachyderm |
| title | The effect of removing a dividing fence between two populations of black rhinos |
| title_full | The effect of removing a dividing fence between two populations of black rhinos |
| title_fullStr | The effect of removing a dividing fence between two populations of black rhinos |
| title_full_unstemmed | The effect of removing a dividing fence between two populations of black rhinos |
| title_short | The effect of removing a dividing fence between two populations of black rhinos |
| title_sort | effect of removing a dividing fence between two populations of black rhinos |
| url | https://pachydermjournal.org/index.php/pachyderm/article/view/211 |
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