LAKE VICTORIA BASIN

Both aquatic and terrestrial biodiversity in the LVB is under serious threat from introduced exotic species. International trade and transport are blamed for the introduction of exotic trees in forests, gardens and water bodies. The tick berry ( Lantana camara ) is found in a number of protected areas and forests where it forms dense, bushy undergrowth that inhibits the growth of the natural vegetation. The velvet mesquite ( Prosopis juliflora ) is a serious problem to native plant species in several parts of the region. The most notable threat to

aquatic and wetland biodiversity is the water hyacinth ( Eichhornia crassipes ), which is often described as the world’s worst aquatic weed. Water hyacinth infestation in Lake Victoria is a cause of concern for the local people who depend on the Lake for food, water, transportation and recreation. The water hyacinth is now present in most tributaries of the Lake, in many satellite lakes and in numerous wetlands. The red water fern ( Azolla filiculoides ) is also rampant in many wetlands across the LVB (Lake Victoria Basin Commission 2007).

Kisumu Port marooned by water hyacinth

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