||Assessment of the Physico-Chemical Pollution of a Water Body in a Perspective of Integrated Water Resource Management: Case Study of Nokoué Lake
ZANDAGBA Josué ,
ADANDEDJI Firmin M. ,
MAMA DAOUDA ,
CHABI Amédée ,
AFOUDA ABEL ,
||J our na l of E nvir o nme ntal P r ote c tion
||Nokoué Lake is the most important surface of brackish waters of Benin and one of the biggest
West African lagoons, in point of view of its surface (about 150 km2), its productivity and exploitation.
The aim of this study is to monitor the temporal and spatial variation of physico-chemical
parameters of Nokoué lake water for its sustainable management. A total of twenty (20) points of
sampling have been followed during a period of one year. The results of the monitoring reveal low
dissolved oxygen and high concentration in phosphorus and chlorophyll a, sign of eutrophication.
In addition, nutrient concentrations (nitrites, phosphates, nitrates) responsible for the phenome-
non compared to water quality assessment grid of the Organisation for Economic Co-operation
and Development, (OECD) used to classify the waters in the range of hyper-eutrophic waters characterized
by the proliferation of aquatic plants. So some measures have been proposed to remediate
to this pollution in order to an integrated management.
||Water, Eutrophication, Nutrients, Nokoué Lake, Pollution
||656 - 669