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1

The general information about the impact of water hyacinth on Aba Samuel Dam, Addis Ababa, Ethiopia: implications for ecohydrologists

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Ingwani E., Gumbo T., Gondo T.
International Journal of Ecohydrology and Hydrobiology
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2010
|
tom 10
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nr 2-4
The water hyacinth, Eichhorrnia crassipes, has been widely recognized as the worst aquatic weed the world over and of increasing importance in Africa, Ethiopia inclusive. The aim of the research was to highlight the devastating impact of the water hyacinth on aquatic life and human activities on Aba Samuel Dam and to underline prospects of its beneficial use. Delphi technique and on-site observations were used. Eutrophication was found to be the main cause of the proliferation of the plant. However, a majority of its potential uses were identified. The absence of a distinct Ministry of Environment is retarding the efforts in fighting causes of water hyacinth spreading. Community awareness has also been identified as a vital component in eradication of water hyacinth. This research is of significant relevance to environmentalists and ecohydrologists in formulating appropriate strategies and policies for hampering proliferation of the weed.
2

Living with environmental health risks – the case of Addis Ababa

100%
Mazhindu E., Gumbo T., Gondo T.
International Journal of Ecohydrology and Hydrobiology
|
2010
|
tom 10
|
nr 2-4
The rapid population growth of Addis Ababa poses the city with many environmental challenges. The current fragmented approach to sanitation and poor waste management has brought serious environmental and health problems. The study deployed purposive and stratified cluster sampling techniques in diagnosing the institutional arrangements for waste management through personal interviews and focus group discussions with stakeholder agencies and households in the slum and residential areas of the city. The threats to groundwater and riverine systems were most proliferated in the central, most densely populated areas of the city, that are poorly served with sanitary facilities. The study concluded that possible improvements may include legitimization of the informal system, community participation and possibly partial privatization. Such an integrated approach seems to be the best option and could well hold the key to the effective and sustainable waste management system in rapidly growing cities such as Addis Ababa.
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