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Water quality and water-use conflicts in Lake Taabo (Ivory Coast)

Groga, Noël and Ouattara, Allassane and Da Costa, Sébastino and Dauta, Alain and Beauchard, Olivier and Moreau, Jacques and Gourene, Germain and Laffaille, Pascal Water quality and water-use conflicts in Lake Taabo (Ivory Coast). (2012) Open Journal of Ecology, vol. 2 (n° 1). pp. 38-47. ISSN 2162-1985

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Official URL: http://dx.doi.org/10.4236/oje.2012.21005

Abstract

The Lake Taabo (Ivory Coast, Africa) results of the construction of the Taabo dam on the Ban- dama River. The changes in the water level of the 69-km² lake depend on 1) the rainfall linked to alternating dry/wet seasons; 2) the extraction of water for human uses; 3) the discharge of water from the upstream dam and the volumes tur- bined by the Kossou dam; 4) the various an- thropic effects (discharge of untreated waste water from towns and industries, and leaching from agricultural land). The average concentra- tions of nutrients (NH4-N: 1.1 mg/L, NO3-N: 1.62 mg/L, PO4-P: 10 mg/L, SiO2: 15 mg/L) and chlo- rophyll a (from 4.8 to 16.5 μg/L, average 11.4 μg/L) indicates some degree of eutrophication. The cumulated effects that threaten the ecosys- tem (degradation of water quality and eutrophi- cation) are such that they are likely to interfere with various water uses. In a context of growing health and environmental concerns in Africa, this study demonstrates conflicts between dif- ferent uses of this water resource and the urgent need for an appropriate policy including specific monitoring of lake water quality, wastewater control, and a programme to reduce agricultural fertilizers.

Item Type:Article
Additional Information:Thanks to DOAJ editor. The definitive version is available at http://www.scirp.org/journal/PaperInformation.aspx?paperID=17706
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:Other partners > Centre National de la Recherche Agronomique - CNRA (IVORY COAST)
French research institutions > Centre National de la Recherche Scientifique - CNRS
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT
Université de Toulouse > Université Paul Sabatier-Toulouse III - UPS
Other partners > Université de Genève (SWITZERLAND)
Other partners > Universiteit Antwerpen - UA (BELGIUM)
Laboratory name:
Statistics:download
Deposited By: Pascal LAFFAILLE

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