ABSTRACT Huge pressures on protected areas (PAs) in the Serengeti ecosystem in Tanzania are increasing through the extractive use by surrounding communities and human-wildlife-related conflicts, which undermine conservation objectives and human welfares. The study examined household reliance on environmental income and wildlife-induced costs due to crop raiding and livestock depredation along the gradient of distance from Serengeti National Park (SNP) boundary in the western Serengeti. Data w...
ABSTRACT The study examined the effect of temperature on the effectiveness of the triple-layer hermetic bag in controlling P. truncatus and S. zeamais damaging maize in the store and how the temperature affects the tensile strength of the polyethene material used. The specific objectives include the determination of the moisture content, oxygen depletion rate and seed viability of the maize. Five (5) kilogrammes of local maize variety (Abrodenkye) with the initial moisture content of 14.6% w...
Abstract This study assesses the contribution of small scale mining towards environmental degradation. Field observation, insitu measurements and laboratory analysis were conducted to determine environmental consequences caused by poor adherence to standard mining practices by artisanal and small scale miners in Ashiraq Mines in Tanzania. Field observation revealed significant land and soil disturbance in the study area such as the existence of abandoned old workings. Direct measurements of p...
Box 35176, Dar es Salaam, Tanzania Abstract Soil stabilization by addition of industrial solid wastes in order to increase trace metals retention and (a minor secondary effect) to dilute their concentrations is an environmentally friendly and attractive soil remediation process that attenuates trace metals impact. In this study, non-hazardous industrial by-products (sugar foam, gypsum, zeolitic materials and fly ashes) were tested using laboratory scale STECH,4(2), S/NO 10, MAY, 2015 87 Copyr...
ABSTRACT A study was conducted to determine the effect of post-harvest losses on artisanal fisheries production in Mtera Dam, Tanzania, based on specific objectives: (1) to analyze factors associated to post harvest loss, (2)to quantify the amount in post harvest losses at Mtera Dam, and (3) to evaluate mitigation measuresto overcome post-harvest losses. A cross-sectional research design was adopted whereby both quantitative and qualitative research approaches were used. The sample size of th...
ABSTRACT Sustainability of many rangelands including Simanjiro Maasai steppe rangelands is limited in part by invasive plant species. A study was conducted among two selected village rangelands (Terrat and Sukuro) of the Simanjiro district aimed to (1) determine the effect of Ipomoea hildebrandtii and I. kituiensis on herbage species composition, richness, and basal cover; and (2) determine the effect of Ipomoea hildebrandtii and I. kituiensis on herbage biomass productivity. Other objectives...
ABSTRACT A study was conducted at Marumbi and Uroa villages of Central District of Unguja Zanzibar to assess diversity of medicinal trees species based on specific objectives: (1) to determine diversity of medicinal tree species in the two study village forests; and (2) to determine extent of extraction of medicinal trees: A total of 99 circular plots (radius, r= 11.28 m) were laid down systematically. Medicinal trees were identified and recorded against tree tally, and computed for indices ...
Abstract: The socio-economic livelihoods of grapevine farmers can partly be improved through their ability to avert the impacts of climate change circumventing grapevine production. Grapevine farmers’ ability to cope with climate change is determined by the application of adaptation strategies which minimize impacts on grapevine production. However, the influence of grapevine production factors on grapevine farmers’ adaptive capacity to climate change is not well known. This compelled to ...
Abstract The objective of this experimental study was to determine the kinetics and equilibrium sorption of Cr(VI) in soils collected from Hengshui City of Hebei Province, China, based on batch experiments. The main concentration for this paper is on the effect of soil pH, solute concentration and ionic strength as the variable factors in the sorption of Cr(VI) in soils and the assessment of their implications to the environment. Atomic Absorption Spectrophotometer (AAS) was used for Cr(III) ...
ABSTRACT This study assessed the diversity of parasites of milkfish Chanos chanos cultured along Zanzibar coasts. The study analyzed the prevalence, mean intensity, diversity and richness of parasites species and to relate the occurrence of this parasites in relation to physico- chemical parameters of the ponds water and feeding modes of the fish. Three different localities were selected for this investigation. A total of 110 milkfish were dissected, the body cavity of each fish removed out v...
ABSTRACT Ruhuhu basin has eight informal lithostratigraphic units, termed the K1 to K8.This research was conducted at Lifua Member (formally K8). The beds are of Early Triassic and are the youngest stratigraphic unit of the Karoo strata in the RuhuhuBasin. This research applies sedimentology and paleocurrent analysisof the early Triassic strata in interpreting provenance, shape and orientation andreconstructing paleogeography of this unit.It involved description, measurements and sampling of ...
ABSTRACT Natural forest lost at high rate year after year. Most of the area are cleared and transformed to agricultural land, which influences changes in hymenopterans diversity. Therefore, understanding the hymenopterans diversity in various land use forms of agriculture are of vital importance to guide in conservation approaches. This study analyzed the effects of land use in hymenopterans diversity in Unguja Island – Zanzibar. Hymenopterans were sampled in five land-use forms between Jan...
ABSTRACT There is poor understanding of geometry and evolution of the accommodation zones along the restraining and releasing bends in strike slip systems. This dissertation focused on characterize the accommodation zones between restraining and releasing bends, with special focus on the influences of syn-kinematic sedimentation and the basement pre-existing structuration by simulating the Seagap fault , Off-shore Tanzania. A set of three scaled sand models were performed, using a asement o s...
ABSTRACT Acacia erioloba, a tree species of great ecological and economic importance is threatened by urban expansion and a lack of sustainable management in the Windhoek area. The overall objective of this study was to determine the diversity and structure of an Acacia erioloba woodland and the influence of herbivory, wood harvesting, fire and physical soil properties on vegetation structure. Forty quadrats 625m2 in size were demarcated in pairs on alternative sides of a transect line to s...
ABSTRACT Invasive species disrupt ecosystems and may consume resources and eventually replace indigenous species. This has been well documented for the Mediterranean mussel Mytilus galloprovincialis throughout the world. This study assessed the spatial and temporal variation of population structure, recruitment patterns, condition index and abundance of the indigenous mussel Perna Perna and alien mussel M. galloprovincialis at three different sites on the central Namibian coast. Sampling too...