ABSTRACT Needs for spatial data are increasing due to the different uses it can be put to. Due to the progress in digitalization, the volumes of data in various fields are accumulating quickly at an unprecedented speed. Different types of spatial resources come from different units but they may be integrated effectively through SDI development so that users can easily obtain and apply the shared resources. Spatial Data Infrastructures (SDIs) enable access, sharing and propagation of spatial d...
ABSTRACT Studies on deadwood (DW) production and nutrient recycling through decomposition by termites in semi arid ecosystems are scarce and thus given less consideration in forest management. A study was conducted at Chimwaga forest patch of UDOM to estimate the amount of DW produced by A. tortilis and A. nilotica as well as the decomposition rate by termites during dry and rain seasons. Both random and systematic sampling techniques were adopted coupled with a completely randomized design ...
ABSTRACTS Urbanization developments results in the loss and fragmentation of habitat, which can significantly alter animal communities. Wildlife species occupying higher trophic levels, such as mammalian carnivores may be especially affected by habitat alteration and concomitant losses of cover and prey. Tanzania has high carnivore diversity, 35 species or more, but relatively little is known about carnivore communities outside protected areas or the effects of urbanization on carnivore comm...
ABSTRACT Access to reliable and affordable energy is a key lever to enhance sustainable livelihoods and an important prerequisite for agrarian economies in Sub Saharan Africa to address food security challenges faced in the region. Limited and unreliable energy supply mainly from conventional energy sources has been a major impediment to increase agricultural productivity in most irrigation schemes in Zimbabwe. Despite having the best solar radiation levels, little research has been conducted...
ABSTRACT The optimum productivity of local chicken population is limited by poor housing management, poor feeding and nutrition, incidences of diseases and lack of appropriate breeding strategies. A study was carried out in different districts of Dodoma and Singida regions of central Tanzania to characterize local chicken ecotypes based on specific objectives; (1) To identify qualitative traits, and (2) to determine quantitative traits of selected local chicken ecotypes. Chickens indigenous t...
ABSTRACT Major economic losses in Agriculture worldwide are reported to be caused by plant diseases, therefore diseases management in an accurate and timely manner is of great importance. This study assessed the effectiveness of using a spectroradiometer in detecting coffee diseases (cercospora, CLR). Healthy and diseased plants were used to compare effectiveness of different indices using a spectroradiometer. Results from this study showed that original data from a spectroradiometer does not...
ABSTRACT The aim of the study was to analyse the challenges and opportunities of community participation in solid waste management in Sakubva suburb of Mutare. The research was fundamental since it envisioned unravelling more information in relation to objectives which included interrogation of the level of Sakubva community participation in solid waste management in light of the challenges and opportunities for future waste management, establishing types and amounts of waste generated, deter...
ABSTRACT The objective of the study was to assess impact of anthropogenic activities on sustainability of the natural forest fragments of Makuwe-Gando and Mtambwe south forest patches, Wete District of Pemba Island. The study was carried out based on the following specific objective; (1) to identify important forest goods and services derived from MGFP and MSFP of Wete district in Pemba Island; (2) to identify type and nature of anthropogenic activities in MGFP and MSFP of Wete district in P...
ABSTRACT The sustainability of many lake ecosystems in the world including Lake Babati is threatened by the ongoing degradation due to anthropogenic activities. A study was carried out to assess the effect of anthropogenic activities on the degradation of Lake Babati shores based on specific objectives: (1) to identify institutions and institutional arrangements responsible on the management of lake ecosystem, (2) to identify drivers leading to the lake shores degradation, (3) to assess the e...
ABSTRACT Community participation (CP) is emphasized in the planning and implementation of various projects and sectors. The Renewable energy (RE) sector just like other sector requires community participation for its effectiveness and efficiency. This review aims at exploring the community participation in the renewable sector in Tanzania. A seven-step model was used to review various kinds of literature and five identified themes were analyzed: (i) access to information on RE resources; (ii...
Abstract Devil’s claw (Harpagophytum procumbens) is a geophyte that occurs mainly in Central, East and South eastern Namibia where it was previously regarded as a nuisance due to its fruit-claws getting caught on sheep and other livestock. The species has been exploited due to its medicinal properties leading to concerns regarding its sustainability. Efforts to conserve it have been tried in order to understand conditions suitable for its management but there are still poor results in the g...
ABSTRACT Species diversity, richness and composition of fish in bottom-trawling were investigated off the Namibian coast between Oranjemund and Henties Bay. Sampling followed a systematic transects design, along latitude gradients (28-22oS) at different seafloor depths (100-500m). In total 18 transects were sampled containing 105 stations. At each trawled station the whole catch was sorted into species type and the total body mass (kg) of each fish species was recorded. A total of 91 fish spe...
ABSTRACT The natural radioactivity and associated hazards in the soils of the towns of Karibib and Okahandja have been studied by gamma spectroscopy. Each town was divided into ten geographical areas and five soil samples were collected across each area. These samples were processed and placed in well-labelled 500 ml plastic bottles. A High Purity Germanium detector (HPGe) was used to measure the gamma ray spectra of the samples. The intensities of selected gamma lines were used to calculate ...
ABSTRACT A study was carried out to assess effects of sand mining on land degradation and plant species diversity in North „B‟ district, Zanzibar based on specific objectives to: (1) investigate community perception on sand mining, (2) asses the impact of sand mining on socio-economic activities among small holder farmers,(3) determine effect sand mining on land degradation. The study also aimed (4) to determine effect of sand mining on plant species biodiversity, (5) to identify importa...
ABSTRACT The impact of heavy metal pollution on vegetation and communities of ground-dwelling invertebrates was investigated at Kombat Mine tailings dump in Namibia. Sixteen transect lines were marked around the dump. Plots, 15m x 15m, were marked at 50m intervals along each transect. Top soils in the demarcated plots were sampled and analysed for concentrations of heavy metals and total sulphur. Woody plant species were identified, counted and heights measured. Herbaceous plants were identif...