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Anomalistics of physical and chemical parameters variability under anthropogenic and natural conditions in the four sectors of Aby lagoon (Ebrié lagoon system, CÔte d′Ivoire)

Author Affiliations

  • 1Laboratoire des Sciences et Technologies de l′Environnement, Université Jean Lorougnon Guédé Daloa, CÔte d′Ivoire
  • 2Laboratoire des Sciences et Technologies de l′Environnement, Université Jean Lorougnon Guédé Daloa, CÔte d′Ivoire
  • 3Laboratoire de Géologie marine et de Sédimentologie, Université Félix Houphouet Boigny, Abidjan, CÔte d′Ivoire
  • 4Laboratoire de Chimie et Environnement, Centre de Recherches Océanologiques, Abidjan, CÔte d′Ivoire
  • 5Laboratoire des Sciences et Technologies de l′Environnement, Université Jean Lorougnon Guédé Daloa, CÔte d′Ivoire
  • 6Laboratoire de Chimie et Environnement, Centre de Recherches Océanologiques, Abidjan, CÔte d′Ivoire

Res.J.chem.sci., Volume 10, Issue (1), Pages 34-40, February,18 (2020)

Abstract

This research aimed to determine anomalies in the physical and chemical parameters variability of the sub-lagoon Aby (Ebrié Lagoon, Ivory Coast). Data, generated from 2007-2009 at 18 study stations, were statistically partitioned using HAC, consolidated with the use of the k-means algorithm. That generated classification of the stations in two (02) groups. Group 1 is abnormally nitrogenous and has seasonal stratifications. This group consists of clusters 1 and 2 (stations 13, 10, 9 and 8; then 1, 12, 17 and 18 respectively) located in South-Aby and Ehy. Group 2 is more abnormal in nutrient than metal impacted. It is significantly influenced by nitrogen salts, phosphorus and mobilizable cadmium. This group is composed of clusters 3-7 which are mainly located in the lagoon entities Aby Nord and Tendo. In fact, beside the resuspension of the bituminous lagoon bottoms, the South-Aby and Ehy entities would have physical and chemical characteristics favourable to the human use of the Aby lagoon waters.

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