Abstract: Prosopis juliflora is an invasive species that has caused adverse ecological, social and economic impacts in Kenya. Climate change is anticipated to aggravate the spread and invasion of this species. This is now raising concerns because further expansion of this species will worsen its negative impacts on the livelihoods of the adjacent communities, and on the ecological integrity of the invaded areas. However, there is limited understanding and knowledge on the influence of climat...
Abstract: Biotransformation of brewery sludge and Lantana camara is a double interest, as it converts industrial waste in to useful product and helps to control invasive weeds. The objective of this study was to evaluate vermicomposting technology in the biotransformation of brewery sludge (BS) and Lantana biomass in to valuable product. Fresh (BS) was obtained from the waste water treatment plant of Harar brewery factory, which is located in Harar city. Lantana camara (LC) was collected fro...
Abstract: Tannery Industries are one of the most highly polluting sectors in developing countries like Ethiopia. Debre Birhan Tannery Industry releases effluent that pollutes the nearby Beressa River. This study was characterized effluent discharged from Tannery Industry and Beressa River water. The (effluent and river water samples) were analyzed for various physicochemical properties like temperature, pH, Conductivity, Turbidity, Total dissolved solid, Chemical oxygen demand, Biological Ox...
Abstract: Kombolcha leather industry produces huge amounts of inorganic and organic wastes which pollute the adjacent environment including Abba Sharo River. This study was focused on characterizing the physic-chemical parameters of Kombolcha tannery effluent and evaluates its impact on the water quality of receiving Abba Sharo River water. Accordingly, two tannery effluent samples along wastewater channel at different distances have been taken and three river water samples were collected al...
Abstract: Most invasive alien species reengineer the host ecosystem by altering its structure and functioning so that some new ecosystem services are added and, at the same time, some existing ecosystem services are lost. Prosopis, a woody invasive tree, was intentionally introduced in dry lands of east Africa for its environmental and economic benefits. However, some 40 years later, it escaped from plantations and has invaded significant. This study investigates impacts of Prosopis on the r...
Abstract: Local communities’ adaptation to climate change requires measures that simultaneously reduce poverty, protect or restore biodiversity and ecosystem services, and remove atmospheric greenhouse gases. Ecosystem-based Adaptation (EbA) involves measures for climate change mitigation and adaptation that aim to strengthen the resilience of local communities vulnerable to climate change effects. It combines measures to achieve these multiple outcomes and is particularly relevant to deve...
Abstract: The study was conducted at Gara Ades protected vegetation of Doba woreda, Western Hararghe Zone, Ethiopia; from October to December 2017 with the objective of analysing the woody vegetation structure, diversity and regeneration status, as well as soil status potentials under three slope gradient classes. Primarily, slope classes were set purposively; where lower slope class was (LSC: 10 - 20 %) and upper slope class was (USC: >20 - 0.05) different in the LSC, MSC and USC which is p...
Abstract: Climate change has adversely affected the livelihoods of people in developing countries where a large proportion of the population is heavily dependent on agriculture. Severe and repeated rise in temperature and rainfall failures caused loss of crops and livestock which resulted in food insecurity in Ethiopia. This study aims to investigate farmers’ perception and adaptation strategies to climate change in Woreillu District. Both qualitative and quantitative data obtained using p...
Abstract: Universal access to and use of clean water has significant impact on improving public health, spur economic development, and reduce poverty. The main objective of this study was to investigate the rural water supply systems with case study in Midakegn woreda, in west-central Ethiopia. Both quantitative and qualitative data were collected and analyzed. Eight sample water schemes were selected from four kebeles and totally 164 representative households were identified as sample size....
Abstract: This study explores households’ perceptions about the effects of Prosopis juliflora and Lantana camara invasions in Amibara and Tulo districts of Afar and Oromia National Regional States of Ethiopia, respectively. The study used cross-sectional data collected from 260 randomly selected households, 130 households from each district, from 15 selected kebeles through semi-structured questionnaire. To measure households’ perceptions about the invasive species, perception index was ...
Abstract: Agricultural sector plays a key role in Ethiopia’s economy, but the sector and smallholders farmers are susceptible to climate change due to high dependence on erratic rainfall. This study therefore sought to assess vulnerability of smallholder farmers to climate change and adaptation strategies in Doba district, West Hararghe Zone, Ethiopia. Long-term rainfall and temperature data were obtained from National Meteorological Agency (NMA) of Ethiopia. Rainfall and temperature data ...
Abstract: In Ethiopia, the need for pesticides in improved agriculture is increasing but unwise application it has a subsequent effect on honeybees. Hence, the study was aimed to assess beekeeping and pesticide application practices and to identify the toxicity of pesticides on honeybee (Apis mellifera bandasii) at Lemo district, Hadiya Zone, Southern Ethiopia. Questionnaires were organized to collect survey data. Toxicity of pesticides were identified using laboratory via feeding, contact a...
Abstract: Fly ash was explored as a raw material for the production of three fly ash-based coagulants being raw, calcined and calcined– sodium hydroxide complex coagulants. Calcined fly ash and calcined fly ash – sodium hydroxide complex coagulants were prepared by calcining raw fly ash at a temperature of 800ºC and all three were acid washed with hydrochloric acid before being used as coagulants. A fly ash sample from a local coal fired power plant was characterization by means of an X...
Abstract: We present a study of carbonate-bearing polyphase inclusions in garnets from leucocratic granitoids intruding metapelitic granulites of the Southern Marginal Zone (SMZ) of the Neoarchean Limpopo high-grade complex, South Africa, during the post-peak stage (2710–2650 Ma; U-Pb ages for zircons and monazites). Ternary feldspar thermometry suggests that the granitoid magma cooled from temperatures 800–900 °C at a pressure of ca. 6.5 kbar. Abundant CO2 fluid inclusions in quartz an...
Abstract: The Tati Greenstone Belt (TGB) in northeastern Botswana hosts numerous Au deposits (Shashe, Mupane and Signal Hill) associated with sulfides, garnet and white mica. In this study, integrative white mica Ar/Ar, garnet U-Pb and sulfides Pb/Pb dating techniques were combined with whole rock and sulfide Pb isotope characteristics to track the source(s) of gold and constrain the timeframes of gold mineralization events. All sulfides and arsenopyrite samples from the TGB yielded overlapp...