Sediments characteristics in relation to nutrient distribution in littoral and pelagic waters of Lake Kariba
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Littoral areas are of great importance in the dynamics of most lakes. In artificial lakes, like in Lake Kariba. water flows which follow the annual flooding of vast and inundated lowland areas combined with extensive water level fluctuations are bound to exert a strong impact on the lake ecosystem development in time and space. Besides, long-term natural droughts superimpose the impact from annual and man-controlled water level changes. Transport of silt and organic material to the lake during the flooding periods and heavy rains after the exposure of draw-down zones during low water periods impose strong pressures on mechanisms and processes to regulate and stabilize the lake system. Interactions between soil/silt and the water phase will thus have a profound impact on the control of water quality, and changes in its mineral content and physical-chemical properties.