scholarly journals Population Viability Analysis of Black Rhinoceros (Diceros bicornis michaeli) in Lake Nakuru National Park, Kenya

2015 ◽  
Vol 3 (1) ◽  
Author(s):  
Thuo DN Junga JO
Keyword(s):  
National Park ◽  
Population Viability Analysis ◽  
Population Viability ◽  
Lake Nakuru ◽  
Black Rhinoceros ◽  
Viability Analysis ◽  
Diceros Bicornis

scholarly journals Lake Nakuru Black Rhinoceros Sanctuary

Oryx ◽  
1990 ◽  
Vol 24 (2) ◽  
pp. 90-94
Author(s):  
Christopher Lever
Keyword(s):  
National Park ◽  
Education Programme ◽  
Lake Nakuru ◽  
Black Rhinoceros ◽  
Diceros Bicornis

In an attempt to stem the decline of the black rhinoceros Diceros bicornis in Kenya, the Rhino Rescue Charitable Appeal Trust was formed in England in 1985. Within a year work on the first sanctuary, in the Lake Nakuru National Park, had begun. The sanctuary was opened in 1987, when 17 rhinos from Mr Courtland Parfet's private ranch at Solio joined the wo animals already in Nakuru. A further 11 females are due to be added to the park shortly. Rhino Rescue, of which the author is a patron and trustee, is also developing its own education programme, and is contributing to other rhino sanctuaries in Kenya.

scholarly journals Population Viability Analysis of the Endangered Roan Antelope in Ruma National Park, Kenya, and Implications for Management

2018 ◽  
Vol 2018 ◽  
pp. 1-9 ◽  
Author(s):  
Johnstone K. Kimanzi
Keyword(s):  
National Park ◽  
Habitat Management ◽  
Expert Knowledge ◽  
Population Decline ◽  
Population Viability Analysis ◽  
Population Viability ◽  
Management Options ◽  
Viability Analysis ◽  
Management Interventions ◽  
Sustainable Conservation

Population viability analysis (PVA) was used to (1) establish causes of roan population decline for the past 30 years in Ruma National Park (RNP), the only park where wild roans remain in Kenya, and (2) predict the probability of roan persistence under existing and alternative management options. PVA was done using long-term data based on population dynamics, life history, climatic conditions, and expert knowledge. Poaching was identified as the main cause of roan decline in RNP. Several antipoaching and prioritized habitat management interventions to promote population recovery and sustainable conservation of roans are described. PVA predictions indicated that, without these interventions, the roan population cannot persist more than 3 decades. Furthermore, ensuring sustainable conservation of roans in RNP will boost tourism in Western Kenyan and thus alleviate poverty in this part of the country. Improved income from tourism will reduce the possible pressures from hunting and give greater incentives for local people to be actively engaged in roan conservation.

scholarly journals Can we reestablish a self-sustaining population? A case study on reintroduced Crested Ibis with population viability analysis

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Yashuai Zhang ◽  
Fang Wang ◽  
Zhenxia Cui ◽  
Min Li ◽  
Xia Li ◽  
...  
Keyword(s):  
Sex Ratio ◽  
Population Size ◽  
Carrying Capacity ◽  
Wild Population ◽  
Population Viability Analysis ◽  
Population Viability ◽  
Viability Analysis ◽  
Crested Ibis ◽  
Reintroduced Population

Abstract Background One of the most challenging tasks in wildlife conservation and management is clarifying which and how external and intrinsic factors influence wildlife demography and long-term viability. The wild population of the Crested Ibis (Nipponia nippon) has recovered to approximately 4400, and several reintroduction programs have been carried out in China, Japan and Korea. Population viability analysis on this endangered species has been limited to the wild population, showing that the long-term population growth is restricted by the carrying capacity and inbreeding. However, gaps in knowledge of the viability of the reintroduced population and its drivers in the release environment impede the identification of the most effective population-level priorities for aiding in species recovery. Methods The field monitoring data were collected from a reintroduced Crested Ibis population in Ningshan, China from 2007 to 2018. An individual-based VORTEX model (Version 10.3.5.0) was used to predict the future viability of the reintroduced population by incorporating adaptive patterns of ibis movement in relation to catastrophe frequency, mortality and sex ratio. Results The reintroduced population in Ningshan County is unlikely to go extinct in the next 50 years. The population size was estimated to be 367, and the population genetic diversity was estimated to be 0.97. Sensitivity analysis showed that population size and extinction probability were dependent on the carrying capacity and sex ratio. The carrying capacity is the main factor accounting for the population size and genetic diversity, while the sex ratio is the primary factor responsible for the population growth trend. Conclusions A viable population of the Crested Ibis can be established according to population viability analysis. Based on our results, conservation management should prioritize a balanced sex ratio, high-quality habitat and low mortality.

Observations on the Pathology of Lesions Associated with Stephanofilaria dinniki Round, 1964 from the Black Rhinoceros (Diceros bicornis)

1964 ◽  
Vol 38 (1-2) ◽  
pp. 171-174 ◽  
Author(s):  
J. G. Tremlett
Keyword(s):  
South Africa ◽  
National Park ◽  
Black Rhinoceros ◽  
Diceros Bicornis ◽  
Made In

In South Africa, a filarioid infestation has been associated with lesions in the skin of the black rhinoceros (Schulz and Kluge, 1960). Similar lesions had been reported earlier from Kenya, as consistently occurring in these animals but their aetiology was unknown (Spinage, 1960). Recently the opportunity occurred to examine lesion material from four black rhinoceros located in the Royal Tsavo National Park Kenya. From this material adult helminths were recovered and identified (Round, 1964), and further pathological studies made. In addition, one rhinoceros showed evidence of an otitis.

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