what are ill effects of an invasive species like water hyacinth
Answers
Water hyacinth affects the environment and humans in diverse ways:
1. Water hyacinth replaces existing aquatic plants and develops floating mats of interlocked water hyacinth plants.
2. In slow-moving water bodies, water hyacinth mats physically slow the flow of water. The reduced water flow can cause flooding and affect irrigation.
3. Water hyacinth absorbs and use nutrients from plants. This leads to reduced phytoplankton, zooplankton and fish stocks.
4. Senescent water hyacinth decompose produce large amounts of organic material, this leads to oxygen deficiency and anaerobic conditions under the floating water hyacinth mats.
5. The conditions created by water hyacinth encourage the vectors of several human diseases, including the intermediate snail hosts of bilharzia and most mosquito vectors, including those responsible for the transmission of malaria, encephalitis and filariasis.
6. In parts of Africa, water hyacinth mats are reported to provide cover for lurking crocodiles and snakes.
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