Abstract The thesis discusses the problem of bush clearing as they affect soil quality, its productivity and environment in the semi-arid areas. In this case, land clearing came as a result of bush encroachment control mechanism. Bush encroachment is a form of land degradation present prominently in semi-arid areas. Namibia is affected by bush encroachment on a massive scale. The phenomenon is currently understood to affect large part of the country, causing severe economic losses for Namibia...
TABLE OF CONTENTS Contents i List of figures vi List of tables viii Acknowledgments ix Abstract x Declaration xi CHAPTER 1 1 1. INTRODUCTION 1 1.1 General introduction 1 1.2 Problem statement 3 1.3 Specific objectives 4 1.4 Key questions 4 1.5 Research predictions 5 CHAPTER 2 8 2. LITERATURE REVIEW 8 ii 2.1 Background on black rhinoceros 8 2.2 Distribution of black rhinoceros: historical and current range 9 2.3 Conservation and management 10 2.4 General ecology and habitat preferences 12 2.5 ...
ABSTRACT The objective of this study was to determine the impact of the smelter waste on plant species diversity and structure in the Tsumeb area. The most important sources of contamination are solid and gaseous emissions from the Tsumeb Smelter, airborne particles from the Tsumeb tailings pond and airborne particles from slag mill waste. Six sites: Inside Smelter Site, Outside Smelter Site, Abattoir Hill Site, Transnamib Site, Nomtsoub Site and Airport Site were selected and ten 10 m x 10 m...
ABSTRACT The study to assess livestock depredation by spotted hyena was conducted in six villages surrounding Ruaha National Park which were systematically selected along the gradient of distance from the park. The closest village was Tungamalenga that is 37 km from the park while other villages were: Makifu village (39km), Mapogolo village (42km), Mahuninga village (49km), kitisi village (50km) and Idodi village 52km. Data collection involved 121 households that were selected through snowbal...
ABSTRACT The purpose of the study was to assess the ergonomic practices of garment producers in Madina, Accra. A simple random sampling technique was used to select 100 registered members of the Madina Branch of the Tailors and Dressmakers Association. The results were hand-coded and presented using frequency and percentage distributions, pie and bar charts. The chi-square statistic was used to test the hypothesis. The respondents were aged between 19 and 44 years. Eighty-one per cent were f...
ABSTRACT Globally, one of the major contributors to diseases burden and mortality are waterborne diseases and sanitation-related infections. The study sought to investigate the implications of climate variability on water availability and its implications for public health. Cross tabulations, Chi-square statistic and a logit model were used to identify determinants of water availability and the determinants of water-borne diseases. Data for the study was collected via a survey of women in ho...
ABSTRACT Hydrocarbon seeps cause chemical and mineralogical alterations at the surface, which can be identified geologically but also detected by remote sensing techniques. This work aimed at detecting mineral alteration induced by hydrocarbon seeps in a sandstone formation in Rufiji basin (Wingayongo), South Coast Tanzania. For this study, rock samples collected during fieldwork were petrographically analysed and the multispectral ASTER data was downloaded and utilized to characterize the i...
ABSTRACT A study was conducted in Nanyala Village, Mbozi District, southwestern Tanzania to determine the effects of small-scale limestone mining on floristic composition and species diversity of shrubs and herbs, and on plant community characteristics. A stratified random sampling technique was adopted. One hundred plots (5 × 5 m) and 500 plots (0.5 × 0.5 m) were established systematically in each stratum at both mined and unmined sites for sampling shrubs and herbs, respectively. The tot...
ABSTRACT Three experiments were conducted at AVRDC-ESA, Arusha-Tanzania in 2014/2015, to assess performance of Tanzanian commercial tomato cultivars„Tanya‟, „Tengeru 2010‟, and „Tengeru 97‟ grafted on the tomato rootsock lines („BF OKITSU 101‟, „HAWAII 7996‟ and „R3034-3-10-N-UG‟) with specific objectives: (1) to determine survival rate of the grafted seedlings; (2) to evaluate the effect of grafting on vegetative growth (days to 50 % flowering (ND50FL), fruit maturit...
ABSTRACT The study examines the spatio-temporal incidence of shistosomiasis the Dangme East and South Tongu districts of Ghana. It also examines the perceptions of the local people about the disease and discusses the preventive measures and coping strategies adopted. The Triangle of Human Ecology Model was the main theoretical framework employed for the analysis, while a questionnaire survey and in-depth interviews were used to collect data. The study shows that the incidence of schistosomi...
ABSTRACT Migrants and Indigenes in big cities tend to suffer similarly from marginalization. However, the mechanism that induce poverty among the two groups are not the same. Urban communities are heterogeneous with different poverty patterns and dynamics. Accra, the capital city of Ghana is no exception. The phenomenon has led to the emergence of slums in the capital. The urban poor live a life of insecurity and suffer basic social deprivations. This work takes a comparative study approach ...
ABSTRACT This research was carried out to quantify supply of charcoal in Dodoma Urban. Specifically, the study intended to (1) quantify the amount of charcoal that pedestrians bring in Dodoma Urban daily, (2) identify species of plants mostly used to make charcoal, (3) determine the source areas where the charcoal production is carried out, (4) analyze the charcoal prices from the source area and at the market place. Point count technique was used to enumerate amount of charcoal brought to D...
ABSTRACT The biological activity of dry, ground plant parts (dust) and tablets of Zanthoxylum xanthoxyloides (Lam.) was assessed in both the laboratory and on the field against the maize weevil, Sitophilus zeamais Motschulsky (Coleoptera: Curculionidae) and the cowpea weevil, Callosobruchus maculatus (F.) (Coleoptera: Bruchidae). Dry ground leaves, bark and roots were prepared in various proportions of 60% leaves and 40% roots; 70% leaves and 30% roots; 80% leaves and 20% roots; 90% leaves a...
ABSTRACT The efficiency of energy sources used by households was experimentally determined in this study. To achieve the study objectives, comparison was done between different energy sources such as LPG, electricity, charcoal and firewood. The comparison was determined by observing efficiency of energy sources and the subsequent cost. The tools like experimentation, questionnaire, interviews, and documentary data were used. Four types of energy sources were employed to cook 250g of beans. Th...
ABSTRACT Sustainability of open spaces in urban centres is threatened by overpopulation. A study was conducted in 2014 within four wards of Dodoma Capital City District (CCD), to investigate the influence of urban expansion on institutional arrangements for management of urban open spaces. Specific objectives being to establish the trends of urban expansion in relation to open space provision and accessibility; to identify institutions, roles, mandates and to identify important strength, weak...