Thesis (MTech. degree in Nature Conservation.)--Tshwane University of Technology, 2011. / Effective management and conservation of wildlife populations requires reliable estimates of population size, which are however usually difficult and costly to obtain. This study investigated the efficiency of two aerial counting techniques used in estimating wildlife populations, namely systematic reconnaissance flights and aerial distance sampling. In Tanzania systematic reconnaissance flights has long been the method of choice for aerial surveys, but aerial distance sampling potentially offers a more statistically robust sampling method. These two methods where compared to evaluate their all-round effectiveness for survey objectives in Tanzania. The study further assessed the impact of sampling designs and intensities on estimates of population parameters.

This study which focusses on a coastal Swahili society, examines the economic, political and social evolution of the Tangan Muslim community through the various phases of its history. The study pays specific attention to the role played by religious leaders, whether as competitors, or simply as madrasa teachers in a community with a tradition of Islamic scholarship. At the macro-level, the relationship between various Muslim organizations and the state also receives our scrutiny. This is done through analysis of the educational system and its structuring of the social order. Finally, we assess the views of the Tangan religious leadership regarding religion and society against a general discussion of intra-religious issues and political developments in the country, thereby achieving a better understanding of Islam in contemporary Tanzania.

Fifty-four kimberlite pipes and dykes cut Precambrian granite in the Singida region of Tanganyika. The pipes range from 60 to 2500 feet in diameter, and occur in clusters and lines. The lines follow fracture zones. In addition to intrusive kimberlite, the pipes contain massive to stratified kimberlite tuff and sedimentary-tuffaceous beds. Some pipes have jackets of explosion breccia. The Singida pipes represent the upper parts of kimberlite volcanoes. The kimberlite consists mostly of serpentine which has replaced olivine. Magnesium ilmenite, pyrope, dark green diopside and perovskite are characteristic accessory minerals. After consolidation, the kimberlite was entirely serpentinized, and partly carbonatized and silicified. The absolute age of the pipes is not known. Indirect evidence suggests an early Tertiary age. The Singida kimberlites may have been emplaced during an early ultrabasic phase of Tertiary-Recent alkaline volcanism of the Eastern Rift Valley.

Fifty-four kimberlite pipes and dykes cut Precambrian granite in the Singida region of Tanganyika. The pipes range from 60 to 2500 feet in diameter, and occur in clusters and lines. The lines follow fracture zones. In addition to intrusive kimberlite, the pipes contain massive to stratified kimberlite tuff and sedimentary-tuffaceous beds. Some pipes have jackets of explosion breccia. The Singida pipes represent the upper parts of kimberlite volcanoes. The kimberlite consists mostly of serpentine which has replaced olivine. Magnesium ilmenite, pyrope, dark green diopside and perovskite are characteristic accessory minerals. After consolidation, the kimberlite was entirely serpentinized, and partly carbonatized and silicified. The absolute age of the pipes is not known. Indirect evidence suggests an early Tertiary age. The Singida kimberlites may have been emplaced during an early ultrabasic phase of Tertiary-Recent alkaline volcanism of the Eastern Rift Valley.

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Biodiversity losses are often influenced by humans due to increased demand over natural resources and retaliatory killing of wildlife as a result of human–wildlife conflicts. Large carnivores are in decline globally due to the current human–carnivore conflicts. This study was conducted in the Maasai steppe of northern Tanzania to understand the role of traditional husbandry techniques in reducing livestock predation, herding challenges that place livestock at risk for predation, willingness of pastoralists to participate in schemes for livestock security improvement, and the role of Tanzania National Parks (TANAPA) in mitigating human–carnivore conflicts. Data were collected using interviews with individuals in households and with herders in grazing fields and were reinforced with field observations. The primary husbandry strategies for livestock protection in homesteads were the bomas where livestock were enclosed at night, while in the grazing fields the strategies included: splitting livestock herds, herder among livestock, herder carrying weapons, and noise. There was no significant correlation between the wealth of an individual and the type of livestock protection strategy used at homesteads. All traditional strategies used by pastoral communities were equally ineffective in preventing livestock predation both at homesteads and in the grazing fields. However, over a four year period, there were no successful predations in any boma reinforced with chain-links, suggesting that reinforcing bomas with studier materials such as chain-link can be effective against livestock predation. Grazing in groups was found to provide more effective livestock protection in the grazing fields than any other strategy. While losing livestock by herders in the grazing fields contributed most to increased livestock predation, other herding challenges exposing livestock to predation included the seasonal nomadic lifestyle and long distances travelled by pastoral communities. The majority of respondents (91%) were willing to improve their livestock security by the use of chain-link fences at homesteads, while 87% were willing to participate in an insurance scheme for livestock security. Neither experience of livestock attack nor level of awareness of insurance scheme influenced willingness to participate in the scheme. There is growing awareness among pastoral communities of the benefits provided by carnivores and wildlife at large. Therefore, major conservation agencies such as TANAPA, Wildlife Division (WD) and other stakeholders should focus more than they have been on addressing the actual conflicts i.e. human–carnivore conflicts and helping to improve husbandry practices against predation to achieve conservation objectives by reducing retaliatory killing of carnivores.

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