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[ Article ] Spatial and Seasonal Characterization of the Physico-Chemical Quality of the Water of the Tovè River in the Southern Benin (West Africa)

Date de soumission: 10-04-2018
Année de Publication: 2017
Entité/Laboratoire Laboratoire de Recherche sur les Zones Humides (LRZH)
Document type : Article
Discipline(s) : Hydrobiologie et Aquaculture
Titre Spatial and Seasonal Characterization of the Physico-Chemical Quality of the Water of the Tovè River in the Southern Benin (West Africa)
Auteurs DJIDOHOKPIN Gildas [1], SOSSOUKPE EDMOND [2], BOKOSSA JANVIER KOUESSIVI HERVE [3], Tamesse Joseph L. [4], FIOGBE EMILE DIDIER [5],
Journal: Int. J. Pure App. Biosci.
Catégorie Journal:
Impact factor: 0
Volume Journal: 5
DOI: DOI: http://dx.doi.org/10.18782/2320-7051.3096
Resume A characterization of the water of the Tovè River has been achieved in order to have basic data for subsequent investigations on the ichthyofauna’s state of this river and to develop appropriate measures to avoid the loss of its aquatic biodiversity. Thus, the spatio-temporal variations of dissolved oxygen, pH, temperature, conductivity, salinity, water transparency, depth, velocity, total dissolved solids (TDS), nitrite (NO2-), nitrate (NO3-), phosphate (PO43-), magnesium (Mg2+), calcium (Ca2+), sulfates (SO42-) and ammonium (NH4+) were surveyed from October 2015 to September 2016. The correlation analysis of the collected data showed strong correlations between these water parameters. The Kruskal-Wallis test showed that the variation of the physico-chemical parameters of the River was strongly influenced by hydrological seasons (p < 0.001). Excepted the calcium, magnesium and temperature values, all the surveyed parameters of the Tovè River waters presented relative high values during the rainy and flood seasons which were mostly beyond the MDDEFP guideline values relative to the protective criteria of the aquatic life (chronic effect), due to runoff drainage, which includes all chemicals generated by anthropogenic activities (manure waste, biomedical waste, leaching, domestic wastewater discharges) along the bank.
Mots clés Tovè River, Rainy Season, Dry Season, Physico-Chemical Parameters, Benin.
Pages 23 - 36
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