NSSCP project: Integrated ecological and hydrogeological study of anthropogenic impacts on the Lower Runde River system in Zimbabwe.

Seasonal flooding and drying in floodplain rivers and connected dynamics in alluvial aquifers generally play important roles in maintaining biodiversity and ensuring sustainable water supply in semi-arid regions. Any change in the hydrology of these systems may have serious impacts not only on the main river but also on associated ecosystems. This project aims to assess the impacts of anthropogenic disturbances on alluvial aquifers and on abiotic conditions and biotic diversity in the Runde River and associated wetlands in the Zimbabwe Lowfeld. In the Lower Runde River, ecosystem processes and functions are particularly threatened by water abstraction for irrigation by sugar estates, leaching of nutrients and siltation. The water quality of alluvial aquifers and recharge dynamics will be investigated and correlated with surface flow regimes. The results will be combined with historical data to develop a predictive model of the linkages between surface and groundwater quality and quantity in relation to anthropogenic impacts.

Keywords:Temporary wetlands, Floodplain river, Integrated water resources management, Ecohydroloy, Zimbabwe, Aquatic ecology

Disciplines:Animal biology