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Articles 451 - 480 of 952
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Preparation And Characterization Of Zns Thin Films Grown By Spin Coating Technique, Oluwatoyin Osanyinlusi
Preparation And Characterization Of Zns Thin Films Grown By Spin Coating Technique, Oluwatoyin Osanyinlusi
Tanzania Journal of Science
Spin coating technique was used to deposit zinc sulphide (ZnS) thin films successfully onto glass substrates and the effects of the number of spin times on the optical properties investigated. The morphology and structures of the prepared thin films were also confirmed. X-ray diffraction confirmed that spin coated ZnS films exhibited cubic structure, where reflections from (111), (220) and (311) are clearly visible with a preferential orientation along (111) plane. The calculated crystallite size for 1S sample from the XRD data is 8.8 nm. From the optical studies, the thin films exhibit good optical properties with relatively high transmittance (81 …
Soil-Plant Nutrient Cycling In Old Cocoa Farms In A Part Of South Western Nigerian Forest Belt, Olusola Afolayan
Soil-Plant Nutrient Cycling In Old Cocoa Farms In A Part Of South Western Nigerian Forest Belt, Olusola Afolayan
Tanzania Journal of Science
Apart from pests and diseases, a vital issue in the early mature of cocoa crop in Nigeria is soil nutrient degradation in relation to the ageing of the farms and annual mining of nutrients via yield harvests. Indigenous production of cocoa in southwest Nigeria has been on without fertilizer applications. This is the basis for the reduction average lifespan and productive years of the plantation. The aim of this study was to quantify the rates of soil nutrient losses via cycling channels in old cocoa farm using cocoa beans, leaves, litters, and pod husks in south western Nigeria forest belt. …
Structural, Mineralogical And Quantitative Characterizations Of Compositions Of Products Linked To Explosive Volcanic Eruption At Haleakala, Usa, Aderemi Alabi, Ibukun Akinsola, Saminu Olatunji, Comfort Ogunyinka1, Oluwatoyin Osanyinlusi
Structural, Mineralogical And Quantitative Characterizations Of Compositions Of Products Linked To Explosive Volcanic Eruption At Haleakala, Usa, Aderemi Alabi, Ibukun Akinsola, Saminu Olatunji, Comfort Ogunyinka1, Oluwatoyin Osanyinlusi
Tanzania Journal of Science
This research focused the analysis vis-à-vis structural, mineralogical and quantitative characterizations of the samples which appeared to be formed from leftover of volcanic eruption sourced from basaltic magma obtained from Haleakala Hill, USA. The results show the presence of natural minerals like pyrolusite, zincite, magnetite, quartz, and diopside with their compositional concentrations in the samples. The geophysical analysis done corroborates the results obtained from the Scanning Electron Micrograph, which confirms the porosity of one of the samples. The X-Ray Diffraction results reveal the average grain sizes of the samples to range between 16 nm and 25 nm. Sample 'A' showed …
Simulated Annealing Algorithm For The Linear Ordering Problem: The Case Of Tanzania Input Output Tables, Allen Mushi
Simulated Annealing Algorithm For The Linear Ordering Problem: The Case Of Tanzania Input Output Tables, Allen Mushi
Tanzania Journal of Science
Linear Ordering is a problem of ordering the rows and columns of a matrix such that the sum of the upper triangle values is as large as possible. The problem has many applications including aggregation of individual preferences, weighted ancestry relationships and triangulation of input-output tables in economics. As a result, many researchers have been working on the problem which is known to be NP-hard. Consequently, heuristic algorithms have been developed and implemented on benchmark data or specific real-world applications. Simulated Annealing has seldom been used for this problem. Furthermore, only one attempt has been done on the Tanzanian input …
Influence Of Deposition Temperature On Properties Of Multilayered Gallium Doped Zinc Oxide Films Prepared By Dc Magnetron Sputtering Technique, Elisante Maloda, Anayesu Malisa
Influence Of Deposition Temperature On Properties Of Multilayered Gallium Doped Zinc Oxide Films Prepared By Dc Magnetron Sputtering Technique, Elisante Maloda, Anayesu Malisa
Tanzania Journal of Science
Multilayered transparent conducting films based on ZnO: Ga were deposited onto glass substrate by DC magnetron sputtering technique. The films were prepared from alloy (Zn: Ga) and ceramic (ZnO: Ga) targets with gallium composition of 3 at% and 4 at%, respectively. Crystal structure and phase analysis were measured using X-ray diffractometer (XRD). The XRD structural analysis results indicated that all multilayered films were polycrystalline with (002) orientation slightly shifted of diffracting angles due to gallium dopant concentrations as increase in the deposition temperatures. The films were hexagonal wurtzite structure, having preferred growth orientation in c-axis perpendicular to the substrate surface. …
A Nexus Between Carbon Emissions And Land Surface Temperature In The Six Ecological Zones Of Nigeria, Folasade Oderinde
A Nexus Between Carbon Emissions And Land Surface Temperature In The Six Ecological Zones Of Nigeria, Folasade Oderinde
Tanzania Journal of Science
The increase in the emission of carbon dioxide (CO2) in the atmosphere has been identified as a driving cause of global climate change which is a threat to the normal functioning of human and natural systems. Therefore, this study investigated the relationship between the emissions of CO2 and land surface temperature (LST) in the six ecological zones of Nigeria. High resolution satellite imageries of land surface temperature and carbon were downloaded from the website of the National Aeronautics and Space Administration (NASA) between January 2002 and December 2012 and were utilized for the study. The data were processed using Arc …
Sedimentology And Paleocurrent Study Of The Early Triassic Rocks In The Ruhuhu Basin, Sw Tanzania, Audax Kiwango, Diwakar Mishra
Sedimentology And Paleocurrent Study Of The Early Triassic Rocks In The Ruhuhu Basin, Sw Tanzania, Audax Kiwango, Diwakar Mishra
Tanzania Journal of Science
The sedimentary succession ranging in age from Permian to Early Triassic in Ruhuhu basin was subdivided into eight informal lithostratigraphic units, identified by the symbols from K1 to K8. Manda Formation (K8) belongs to Early Triassic age and comprises two Members, i.e., Lower Kingori Member and Upper Lifua Member (150-200 m thickness). The implications of present study relate to inter and intra basinal correlations which may provide regional depositional framework from a mass of local details. Present investigation connoting the lithofacies studies in conjunction with palaeocurrent and grain size analysis of the early Triassic strata aims at interpreting the depositional …
Variability Of Selected Mineral Contents In Marine Fish From Local Markets In Tanzania, Stella Shija, Matobola Mihale, Daniel Shilla
Variability Of Selected Mineral Contents In Marine Fish From Local Markets In Tanzania, Stella Shija, Matobola Mihale, Daniel Shilla
Tanzania Journal of Science
Mineral contents (K, Na, Ca and Mg) in selected marine fish species (Alectis ciliaris, Lethrinus harak, Rastrelliger kanagurta and Siganus canaliculatus) from local fish markets were analysed in wet and dry seasons. The processing methods (frying and boiling) were also assessed for their influence on the mineral contents. Samples were randomly collected from Tanga, Bagamoyo, Dar es Salaam and Mtwara seaports, analysed using established methods and determined by Graphite Furnace Atomic Absorption Spectrometry. Mean mineral contents in individual and all analysed fish species were high during dry season compared to wet season except Ca and the difference was statistically significant …
Geochemical Characteristics Of Soil In Relation To Occurrence Of Entomopathogenic Nematodes (Epns) In Osogbo, Osun State, Nigeria, Mohammed Rufai, Abidat Shittu, Monsuru Adeleke
Geochemical Characteristics Of Soil In Relation To Occurrence Of Entomopathogenic Nematodes (Epns) In Osogbo, Osun State, Nigeria, Mohammed Rufai, Abidat Shittu, Monsuru Adeleke
Tanzania Journal of Science
The occurrence and abundance of entomopathogenic nematodes (EPNs) vary across locations, and this has been attributed to many factors including soil physico-chemical properties. This study examined the influence of selected soil chemicals on the occurrence of EPNs under different cultivated lands in Osun state, Southwestern Nigeria. EPNs were isolated from 23.33% of the soil samples in selected sites using decantation and centrifugation method and nematodes observed under standard microscopy were identified based on morphological analysis of infective juveniles (IJs). This study has revealed the presence of nematodes of the families Steinernema and Heterorhabditis in the sampled soils. Soil chemical properties, …
Variations Of Concentrations Of Lead, Zinc, Iron, Copper And Cadmium In Urine Of Primary School Pupils In Relation To Age, Sex And Academic Performance, John Mahugija, Zainab Kasenya, Kessy Kilulya
Variations Of Concentrations Of Lead, Zinc, Iron, Copper And Cadmium In Urine Of Primary School Pupils In Relation To Age, Sex And Academic Performance, John Mahugija, Zainab Kasenya, Kessy Kilulya
Tanzania Journal of Science
This study was conducted in order to assess the variations and correlations in the concentrations of lead, zinc, iron, copper and cadmium metals in the urine samples of selected primary school pupils with respect to their sex, age and academic performance. Urine samples were collected from 240 pupils in Dar es Salaam, Tanzania and then digested in concentrated acids and analysed using atomic absorption spectrometry (AAS). Lead, zinc, iron and copper were detected in most of the urine samples. Cadmium was not detected in any of the samples. The mean concentrations of lead, zinc, iron and copper in the samples …
Dividend Maximization Under A Set Ruin Probability Target In The Presence Of Proportional And Excess-Of-Loss Reinsurance, Christian Kasumo, Juma Kasozi, Dmitry Kuznetsov
Dividend Maximization Under A Set Ruin Probability Target In The Presence Of Proportional And Excess-Of-Loss Reinsurance, Christian Kasumo, Juma Kasozi, Dmitry Kuznetsov
Applications and Applied Mathematics: An International Journal (AAM)
We study dividend maximization with set ruin probability targets for an insurance company whose surplus is modelled by a diffusion perturbed classical risk process. The company is permitted to enter into proportional or excess-of-loss reinsurance arrangements. By applying stochastic control theory, we derive Volterra integral equations and solve numerically using block-by-block methods. In each of the models, we have established the optimal barrier to use for paying dividends provided the ruin probability does not exceed a predetermined target. Numerical examples involving the use of both light- and heavy-tailed distributions are given. The results show that ruin probability targets result in …
Religious Leader’S Support Toward Individual At Risk Ofhiv/Aids To Attend Voluntary Counselling And Testing Service, Imelda Februati Ester Manurung, Chatarina Umbul Wahyuni, Ari Probandari
Religious Leader’S Support Toward Individual At Risk Ofhiv/Aids To Attend Voluntary Counselling And Testing Service, Imelda Februati Ester Manurung, Chatarina Umbul Wahyuni, Ari Probandari
Kesmas
Religious leader is a figure who is believed to have the gift of healing. A person with illness will follow any advice the religious leader gives for his/her recovery.Based on the phenomenon, religious leader is a potential local figure to give support for individuals at risk of human immunodeficiency virus (HIV) andacquired immune deficiency syndrome (AIDS). This study aimed to determine factors related to religious leader’s support toward individuals at risk of HIV andAIDS to attend voluntary counselling and testing (VCT) service. This study was an observational analytical with cross-sectional design. The population of thisstudy was religious leader in Kupang …
Icdp Workshop On The Lake Tanganyika Scientific Drilling Project: A Late Miocene–Present Record Of Climate, Rifting, And Ecosystem Evolution From The World's Oldest Tropical Lake, James M. Russell, Philip Barker, Andrew Cohen, Sarah Ivory, Ishmael Kimirei, Christine Lane, Melanie Leng, Neema Maganza, Michael M. Mcglue, Emma Msaky, Anders Noren, Lisa Park Boush, Walter Salzburger, Christopher Scholz, Ralph Tiedemann, Shaidu Nuru, Lake Tanganyika Scientific Drilling Project Consortium
Icdp Workshop On The Lake Tanganyika Scientific Drilling Project: A Late Miocene–Present Record Of Climate, Rifting, And Ecosystem Evolution From The World's Oldest Tropical Lake, James M. Russell, Philip Barker, Andrew Cohen, Sarah Ivory, Ishmael Kimirei, Christine Lane, Melanie Leng, Neema Maganza, Michael M. Mcglue, Emma Msaky, Anders Noren, Lisa Park Boush, Walter Salzburger, Christopher Scholz, Ralph Tiedemann, Shaidu Nuru, Lake Tanganyika Scientific Drilling Project Consortium
Earth and Environmental Sciences Faculty Publications
The Neogene and Quaternary are characterized by enormous changes in global climate and environments, including global cooling and the establishment of northern high-latitude glaciers. These changes reshaped global ecosystems, including the emergence of tropical dry forests and savannahs that are found in Africa today, which in turn may have influenced the evolution of humans and their ancestors. However, despite decades of research we lack long, continuous, well-resolved records of tropical climate, ecosystem changes, and surface processes necessary to understand their interactions and influences on evolutionary processes. Lake Tanganyika, Africa, contains the most continuous, long continental climate record from the mid-Miocene …
Wangari Maathai, Tabitha M. Kanogo
Wangari Maathai, Tabitha M. Kanogo
Ohio University Press Open Access Books
Wangari Muta Maathai is one of Africa’s most celebrated female activists. Originally trained as a scientist in Kenya and abroad, Professor Maathai returned to her home country of Kenya with a renewed political consciousness. There, she began her long career as an activist, campaigning for environmental and social justice while speaking out against government corruption. In 2004, Maathai was awarded the Nobel Peace Prize for her leadership of the Green Belt Movement, a conservation effort that resulted in the restoration of African forests decimated during the colonial era.
In this biography, Tabitha Kanogo follows Wangari Maathai from her modest, rural …
A Survey Of Fish Parasites From Pangani Catchment And Lake Kitangiri In Singida, Tanzania, Fred D. Chibwana, Johnson G. Mshana, Jestina V. Katandukila
A Survey Of Fish Parasites From Pangani Catchment And Lake Kitangiri In Singida, Tanzania, Fred D. Chibwana, Johnson G. Mshana, Jestina V. Katandukila
Tanzania Journal of Science
Inland water fisheries are a significant source of dietary protein to human populations, and consequently they are essential economic activities worldwide. However, both natural waters and aquaculture systems, which form the freshwater fisheries are faced with a problem of fish parasitic diseases which may result in reduced productivity and market value. The present study, therefore, carried out a survey on fish parasites from the Pangani catchment (Nyumba ya Mungu dam and Lake Jipe) and Lake Kitangiri in Singida Region in Tanzania to seal the gap of occurrence, diversity and abundance of helminths. Three species of fish viz. 111 African sharptooth …
Density And Aboriginal Uses Of Wild Tree Species In Milawilila Forest Reserve In Morogoro Region, Tanzania, David Sylvester Kacholi
Density And Aboriginal Uses Of Wild Tree Species In Milawilila Forest Reserve In Morogoro Region, Tanzania, David Sylvester Kacholi
Tanzania Journal of Science
This study assessed density and local uses of wild tree species in Milawilila forest reserve, Morogoro rural district. A total of six transects were set in the forest for assessing density and diversity of trees. In each transect, three plots of 20 m x 20 m were established and all trees with Diameter at Breast Height (DBH) ≥ 10 cm were identified, counted and DBH recorded in each plot. A semi structured questionnaire was used to obtain data on the use of tree species by the locals. Data were analyzed using Microsoft Excel and Statistical Package for Social Science software. …
Isodon Diterpenoids, Derivatives And Their Pharmacological Potentials-A Review, Monica M. Ndoile
Isodon Diterpenoids, Derivatives And Their Pharmacological Potentials-A Review, Monica M. Ndoile
Tanzania Journal of Science
The searches of various literatures have shown the genus Isodon to be a source of different compounds with interesting biological activities. The genus has provided many efficacious herbal medicines that are used in various countries including China; therefore, it has become the centre of attention to phytochemistry and pharmacology researchers. There are many reports on chemical and biological aspects of Isodon species, especially in China and other parts of the world; however, reports on African Isodon species are scanty. Since the literature indicates the genus to be rich in diterpenoids with potential therapeutic activities as revealed herein, with African species …
The Application Of Late Acceptance Heuristic Method For The Tanzanian High School Timetabling Problem, Allen R. Mushi
The Application Of Late Acceptance Heuristic Method For The Tanzanian High School Timetabling Problem, Allen R. Mushi
Tanzania Journal of Science
High School timetabling is the problem of scheduling lessons of different subjects and teachers to timeslots within a week, while satisfying a set of constraints which are classified into hard and soft constraints. This problem is different from university course timetabling problem because of the differences in structures including classroom allocations and grouping of subject combinations. Given the scarce education resources in developing countries, high school timetabling problem plays a very important role in optimizing the use of meager resources and therefore contribute to improvement of quality of education. The problem has attracted attention of many researchers around the world; …
Geochemical Characterization Of The Paleoproterozoic Massif-Type Anorthosites From The Ubendian Belt, Tanzania, Nelson Boniface
Geochemical Characterization Of The Paleoproterozoic Massif-Type Anorthosites From The Ubendian Belt, Tanzania, Nelson Boniface
Tanzania Journal of Science
Paleoproterozoic massif-type anorthosites occur in Southern Ubendian Belt (Upangwa Terrane) in Tanzania, mainly as mafic-plutons (meta-anorthosite and meta-gabbro) associated with ultramafic stocks and titaniferous magnetite bodies. Variably metamorphosed silicic granitoids are also recorded in the area. This article presents geochemical characteristics of meta-anorthosites, meta-gabbros and the associated granitoids in order to determine their genetic links and geotectonic settings. The meta-anorthosites, meta-gabbros and meta-tonalite have indistinguishable chondrite normalized REE patterns displaying LREE-enriched patterns (e.g., (La/Sm)N = 1.97–6.10) and negatively sloping HREE ((La/Yb)N = 4.05–47.06) suggesting continental crustal affinity. The trace element patterns of the studied meta-anorthosites are characterized by enrichments of …
Bayesian Estimation Of Regression Quantiles In The Presence Of Autocorrelated Errors, Ayoade I. Adewole, Olusoga A. F Fasoranbaku
Bayesian Estimation Of Regression Quantiles In The Presence Of Autocorrelated Errors, Ayoade I. Adewole, Olusoga A. F Fasoranbaku
Tanzania Journal of Science
This is a study of Bayesian quantile regression that broadly considered the estimation of regression quantiles in the presence of autocorrelated error. Regression models are based on several important statistical assumptions upon which their inferences rely. Autocorrelation of the error terms violates the ordinary least squares regression assumption that error terms are uncorrelated which invalidate Gauss Markov theorem. This study designed schemes for estimation and making inference of regression quantiles in the presence of autocorrelated errors using Bayesian approach. Bayesian method to quantile regression models regards unknown parameters as random variables and the parameter uncertainty was taken into account without …
Mapping Of The Geological Structures Using Digital Elevation Model (Dem)-Derived Flow Direction: A Case Study Of Rungwe Volcanic Province, Southwest Tanzania, Elisante Elisaimon Mshiu
Mapping Of The Geological Structures Using Digital Elevation Model (Dem)-Derived Flow Direction: A Case Study Of Rungwe Volcanic Province, Southwest Tanzania, Elisante Elisaimon Mshiu
Tanzania Journal of Science
This study aimed to assess the potentiality of Digital Elevation Model (DEM)-derived flow direction in mapping geologic structures, specifically in areas with thick overburden of soil or volcanic materials such as in the Rungwe Volcanic Province, SW Tanzania. Clustering of flow directions based on trends of structure sets found in the study area was applied and it successfully revealed a large number of geological structures through demarcated tectonic blocks from patterns created by flow directions. Northwest–southwest (NW-SE) and NE-SW- trending lineaments are the dominant structural sets in the area whereas N-S and E-W-trending lineaments constitute the minor sets. Moreover, the …
Monodisperse Polystyrene Microspheres: Studies On The Effects Of Reaction Parameters On Particle Diameter And Colloidal Stability, Ikhazuagbe H. Ifijen, Esther U. Ikhuoria
Monodisperse Polystyrene Microspheres: Studies On The Effects Of Reaction Parameters On Particle Diameter And Colloidal Stability, Ikhazuagbe H. Ifijen, Esther U. Ikhuoria
Tanzania Journal of Science
The synthesis of highly monodisperse polystyrene (PS) microspheres via surfactant-free emulsion polymerization process was successfully carried out. Various reaction conditions such as initiator amount, monomer amount, reaction temperature and stirring speed were varied with a view to studying the effects of these polymerization parameters on the particle diameter and colloidal stability of the synthesized PS microspheres. Microscopic analysis revealed that the as-synthesized particles are spherical in shape without any form of agglomeration. Thermo-gravimetric analyzer (TGA) analysis revealed that the prepared PS sample completely degrades at 465 °C. DLS analysis showed a reduction in the average particle diameters of the as-synthesized …
Integrated Mobile And Web-Based Application For Enhancing Delivery Of Hiv/Aids Healthcare Information In Tanzania, Ibrahim Mwammenywa
Integrated Mobile And Web-Based Application For Enhancing Delivery Of Hiv/Aids Healthcare Information In Tanzania, Ibrahim Mwammenywa
Tanzania Journal of Engineering and Technology (TJET)
This study aims to develop an integrated e-health platform for enhancing delivery of HIV/AIDS healthcare information in Tanzania, which consists of a mobile application and a web-based system. The study is based on the system's functional and non-functional requirements for an e-health system for delivery of HIV/AIDS healthcare information. The Rapid Application Development (RAD) model was adopted during the system development. The system requirements were modelled into Data Flow Diagram (DFD) in order to obtain the clear flow of the HIV/AIDS healthcare information between the clients and HIV/AIDS healthcare practitioners. With the use of different software development tools and environment …
Land Use/Cover Change And Their Impacts On Streamflow In Kikuletwa Catchment Of Pangani River Basin, Tanzania, Upendo Msovu
Land Use/Cover Change And Their Impacts On Streamflow In Kikuletwa Catchment Of Pangani River Basin, Tanzania, Upendo Msovu
Tanzania Journal of Engineering and Technology (TJET)
Streamflow perturbation is highly prevalent in Kikuletwa catchment. However, little is known concerning land use/cover change (LULCC) with regard to streamflow perturbation in the catchment. This study aims to detect the historical and predict future LULCC and assess their impacts on streamflow amounts using the Soil and Water Assessment Tool (SWAT) model. Supervised classification of Landsat imagery data for 1985, 2000 and 2015 years was done in ERDAS 14 Imagine software. Future prediction of LULCC was done using Module for Land Use Change Evaluation (MOLUSCE) tool, a QGIS plug-in. An accuracy ranging from 79% to 82% was obtained for all …
The Potentials Of Faecal Sludge Treatment Using Local Conditioners In Tanzania: A Review, Doglas Benjamin1
The Potentials Of Faecal Sludge Treatment Using Local Conditioners In Tanzania: A Review, Doglas Benjamin1
Tanzania Journal of Engineering and Technology (TJET)
Worldwide, every day human beings generate millions of tons of Faecal Sludge (FS), which is rich in water, nutrients, energy, and organic compounds. Yet FS is not being managed in a way that permits us to derive value from its reuse, while at the same time, millions of farmers struggle with depleted soils and lack of water. In most of the developing countries, energy for cooking is mainly derived from cutting of trees, either as wood or charcoal. Resource recovery and reuse from FS can create livelihoods, enhance food security, support green economies, reduce waste and contribute to cost recovery …
Practical Approach For Removal Of Natural Organic Matter And Defluoridation Of Maji Ya Chai River Water: Use Of Acid Pre-Treated Bone Char And Coagulants, Godfrey Mbabaye
Practical Approach For Removal Of Natural Organic Matter And Defluoridation Of Maji Ya Chai River Water: Use Of Acid Pre-Treated Bone Char And Coagulants, Godfrey Mbabaye
Tanzania Journal of Engineering and Technology (TJET)
The removal of natural organic matter (NOM) and fluoride from Maji ya Chai River water (MCRW) using bone char (BC) and coagulants was investigated. Fine BC particles ranging from 0.045 to 0.2 mm were used in a 1 litre half-filled container, stirred at 300 rpm for 60 min followed by addition of a commercial coagulant and allowed to settle for 24 hours to remove NOM. MCRW practicable and affordable defluoridation method for removal of NOM through defluoridation with BC pre-treated with 0.3 N HCl followed by coagulation with Poly-aluminium chloride (PACl) is proposed. Reduction of fluoride from 21 mg/L to …
Altitudinal Distribution And Monthly Occurrence Of Butterflies In The Kihansi Gorge Forest, Tanzania, With A Checklist Of Species, Devolent Mtui, Colin Congdon, Ivan Bampton, Parson Kalenga, Haule Leonard
Altitudinal Distribution And Monthly Occurrence Of Butterflies In The Kihansi Gorge Forest, Tanzania, With A Checklist Of Species, Devolent Mtui, Colin Congdon, Ivan Bampton, Parson Kalenga, Haule Leonard
Tanzania Journal of Science
The goal of this project was to establish a checklist of butterflies occurring in Kihansi gorge to serve as baseline for monitoring of gorge ecosystem health. The key questions were what and how many species of butterflies occur in the gorge with respect to time and space. The study was conducted between October 2005 and February 2007. Butterflies were recorded twice a week, along a walking trail, using malaise traps and sweep net. The traps were located at upper (> 750 – 1100 m), mid (> 580 – 750 m) and lower (300 – 580 m) gorge. A total of …
Mammals Inventory Of The Kihansi River Gorge In Udzungwa Mountains, Tanzania, Dennis K. Ikanda, Samuel N. Mtoka, Mustafa Hassanali, Anna Mshanga
Mammals Inventory Of The Kihansi River Gorge In Udzungwa Mountains, Tanzania, Dennis K. Ikanda, Samuel N. Mtoka, Mustafa Hassanali, Anna Mshanga
Tanzania Journal of Science
The Kihansi gorge montane forest in Udzungwa Mountains forms part of the Eastern Arc Mountains (EAM) which contain some of the most biologically diverse and endemic montane ecosystems in all of Africa. The Kihansi river gorge was opened up for hydroelectric development in the late 1990s, attracting hundreds of farming communities whose activities lead to environmental degradation and hence presumed biodiversity loss in the montane forest which is not understood. Using camera traps, an inventory of mammals of the area was conducted for 24 consecutive days. About 14 mammal species were photo captured, indicating diverse assemblage of large and medium …
Crop Pests, Control Measures And Potential Impacts In Kihansi Catchment Area, Beatrice Pallangyo, K. Mdily, C. Mkondo, A. Kibola
Crop Pests, Control Measures And Potential Impacts In Kihansi Catchment Area, Beatrice Pallangyo, K. Mdily, C. Mkondo, A. Kibola
Tanzania Journal of Science
A baseline survey which covered 349 households in Bomang’ombe and Masisiwe (Kilolo district), Kibengu and Mapanda (Mufindi district) and Chita and Chisano (Kilombero district) was conducted to identify major pests, control measures and potential impacts in Kihansi catchment area. Maize was the most predominant crop being cultivated by 55% of the total respondents in all the study districts. Pests and diseases were the major constraints to crop production, whereby cereal stem borers were the most serious pests being reported by 88.2% of respondents. Application of synthetic pesticides was the major pest control measure, being applied by 66% of the respondents. …
Understorey Bird Communities 8 And 18 Years After River Diversion In Kihansi Gorge, Udzungwa Mountains In The Eastern Arc Mountains, Tanzania, Chacha Werema, Charles A. Msuya
Understorey Bird Communities 8 And 18 Years After River Diversion In Kihansi Gorge, Udzungwa Mountains In The Eastern Arc Mountains, Tanzania, Chacha Werema, Charles A. Msuya
Tanzania Journal of Science
On the most south-western slopes of the Udzungwa Mountains in Tanzania lies Kihansi River. The river was diverted underground in 2000 to run electric turbines for electricity generation. Using mist netting, pre-diversion (in 1998 and 1999) and short term post-diversion (in 2001) effects of the river diversion on understorey birds were undertaken before and year after river diversion, respectively. Intermediate and long-term effects of river diversion on understorey birds at the same transects are non-existent. In September 2008 and August and September 2018, using mist nets, birds were surveyed at the same transects to assess whether or not there have …