By Luis A. Navarro, George Phiri
Freshwater infestation by means of the water hyacinth weed has reached trouble proportions in lots of parts of Africa and the center East. gathered environmental, monetary and social damages to this point are expected within the billions of bucks. so much seriously affected are riparian groups and people those who depend on the environmental prone or creation from affected water our bodies. Years of study have produced major new findings and advances in water hyacinth keep an eye on and usage. notwithstanding, it's all too obvious that this information isn't being appropriately utilized to control the weed. Early in 1996, and in keeping with disparate requests for water hyacinth examine help from throughout Africa and the center East, IDRC introduced an initiative to evaluate the level of the matter. most significantly, the initiative used to be to enquire the plain lethargy of governments and affected groups to recognize, react to, and deal with imminent water hyacinth infestations. This booklet summarizes the findings and suggestions of the initiative. it will likely be of curiosity to decision-makers, coverage makers, improvement execs, researchers and lecturers.
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Additional info for Water Hyacinth in Africa: A Survey of Problems and Solutions
Example text
The report closes with reflections by the organizers and remarks by the IDRC Regional Director indicating IDRC's willingness to follow up on the key recommendations from the workshop. The appendixes include a description of the survey instrument, reports from the three working groups, and a list of participants and their addresses. One of the key recommendations is to install and support the operations of a Water Hyacinth Information Clearinghouse. This would facilitate the flow of information critical to prompt decision-making by key players responsible for, and capable of, handling the weed problem in AME.
They are also found in clumps of fringing macrophytes, often 10 or 15 m wide. At times, they completely obstruct inlets and fish landings, and they often completely block ferry crossings. Gopal (1987) indicated that where the plant produces seeds, the seeds may cause a new outbreak of water hyacinth even after a site is completely cleared of an initial infestation. Evans (1963) reported seed production in Zaire. It is also known that birds and animals that feed in sites of water-hyacinth infestation transport the seeds over considerable distances on their feet.
KEY LESSONS FROM A CASE STUDY IN SOUTH AFRICA — A case study in South Africa investigated the integrated control of water hyacinth in the Enseleni-Mposa rivers, which flow through the Enseleni village and a nature reserve. The communities and the National Parks Board were involved in the program. The program mainly used biological control and physical means (floating booms); limited chemical control was also used. The program stratified the river systems into five management units and determined the choice of method based on levels of infestation and knowledge of the weed's principal nursery sites.