Tamuka Nhiwatiwa

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Dynamics of flooding and drying resulting in fragmentation of lotic habitats are a yearly phenomenon in subtropical floodplain rivers but their ecological significance is not known for invertebrate communities. We studied the response of zooplankton and macroinvertebrate communities in 48 dry-season river pools in the Save-Runde river system (Lowveld,(More)
Agriculture is vital in sustaining human livelihoods. However, agriculture as it is currently practiced, is contributing to the degradation of freshwater ecosystems globally. We investigated impacts of irrigation return flows from sugarcane farming on water quality and health status of the Chiredzi and Runde Rivers, a biodiversity hotspot region in(More)
Small reservoirs are characterised by extreme fluctuations in water levels, but how this affects fish communities is not well understood. The aim of the study was to investigate fish communities in two small reservoirs which experience large water level fluctuations over two study years, wet and dry. Six fish species were caught in both reservoirs during(More)
BACKGROUND Consistent domestic hand hygiene can reduce diarrhea-related morbidity and mortality and the spread of other communicable diseases. However, it remains uncertain which technique of handwashing is most effective and practicable during everyday life. The goal of this study is to determine how the handwashing technique, as performed in the daily(More)
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