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| Location: |
Africa - Southern Africa - South Africa |
| Subject: |
Ecology - Population |
| Species: |
Black Rhino |
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Increase in introduced population, Addo NP. For the purpose of this calculation the performance of the population at Addo from 1977 to 1986 was assessed. The hybrid animals (removed in 1 983) were considered to be partof the population in the model, but the Natal bulls not. The population growth overthe 9 years is described by the equation:
Log e population = 2.11 + 0.0917t (where t is years)
This observed rate of increase r=0.091 7 (giving a finite rate of increase of 9.6% per annum) is slightly higher than the rateof 9.0 % calculated for the Kruger National Park population (Hall-Martin, 1982), and is considerably higher than that of Hluhluwe Came Reserve in Natal (5.3%) (Hitchins and Anderson, 1983), or, historically, the 7.0 % at Ngorongoro and 7.2 % at Olduvai in Tanzania (Goddard, 1967). Other Natal populations such as Umfolozi have a higher rateof increaseof 11.0 % (Hitchins and Anderson, 1983).
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Recruitment in a small black rhino population
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