Sonko A., Copin D., Brehmer Patrice, Diop C., Constantin de Magny Guillaume, Fall M., Kande Y., Moulin Esmard Patricia, Faye N. S., Faye S., Linossier I., Le Pennec G. (2023). Assessment of the global toxicity of marine sediments from the Dakar peninsula (Senegal, West Africa). Environmental Monitoring and Assessment, 195 (1), 185 [19 p.]. ISSN 0167-6369.
Titre du document
Assessment of the global toxicity of marine sediments from the Dakar peninsula (Senegal, West Africa)
Année de publication
2023
Auteurs
Sonko A., Copin D., Brehmer Patrice, Diop C., Constantin de Magny Guillaume, Fall M., Kande Y., Moulin Esmard Patricia, Faye N. S., Faye S., Linossier I., Le Pennec G.
Source
Environmental Monitoring and Assessment, 2023,
195 (1), 185 [19 p.] ISSN 0167-6369
Marine pollution in West Africa is major threat particularly around coastal megacities. We assess the chemical and ecotoxicological quality of the marine sediments in various submerged sampling sites of Dakar. Analysis revealed that sediments were slightly basic in which fine and coarse sands predominated. High percentages of total organic carbon were found sometime above 6%. Higher levels of heavy metal were reported than in previous studies. Chromium and nickel were above the Probable Effect Concentration. Low trophic level appeared not affected by the overall toxicity, while medium trophic level was more affected. Indeed, the vast majority (91%) of sites studied revealed a net percentage of Magallana gigas embryolarval developmental abnormality over 20%. The assessment of the global toxicity of marine sediments from the Dakar sites Studied (n = 11) seemed, almost, as a whole, to be in a poor ecotoxicological state calling to take measures to improve the sanitary condition of this marine feature.
Plan de classement
Sciences fondamentales / Techniques d'analyse et de recherche [020]
;
Sciences du milieu [021]
;
Pollution [038]
Description Géographique
SENEGAL
Localisation
Fonds IRD [F B010087441]
Identifiant IRD
fdi:010087441
