Assessment of the global toxicity of marine sediments from the Dakar peninsula (Senegal, West Africa).

Autor: Sonko A; Institut Sénégalais de Recherches Agricoles, ISRA, CRODT, Dakar, Senegal. amidousonko664@yahoo.com.; Laboratory of Marine Biotechnology and Chemistry (LBCM), University of Southern Brittany (UBS), BP 56100, Lorient, France. amidousonko664@yahoo.com.; Laboratoire de Toxicologie et d'Hydrologie, Université Cheikh Anta Diop de Dakar (UCAD), BP 5246, Dakar-Fann, Senegal. amidousonko664@yahoo.com.; IRD, Univ Brest, CNRS, Ifremer, BP 1386, Dakar, Senegal. amidousonko664@yahoo.com., Copin D; Laboratory of Marine Biotechnology and Chemistry (LBCM), University of Southern Brittany (UBS), BP 56100, Lorient, France., Brehmer P; IRD, Univ Brest, CNRS, Ifremer, BP 1386, Dakar, Senegal., Diop C; Laboratoire de Toxicologie et d'Hydrologie, Université Cheikh Anta Diop de Dakar (UCAD), BP 5246, Dakar-Fann, Senegal., Constantin De Magny G; MIVEGEC, Univ. Montpellier, CNRS, Montpellier, IRD, France.; Montpellier Ecology and Evolution of Disease Network (MEEDiN), Montpellier, France., Fall M; Laboratoire de Toxicologie et d'Hydrologie, Université Cheikh Anta Diop de Dakar (UCAD), BP 5246, Dakar-Fann, Senegal., Kande Y; Institut Sénégalais de Recherches Agricoles, ISRA, CRODT, Dakar, Senegal.; IRD, Univ Brest, CNRS, Ifremer, BP 1386, Dakar, Senegal.; Mathematics Department, University Alioune Diop of Bambey, UADB, Bambey, Senegal., Moulin P; IRD, UAR191 IMAGO, ISRA-IRD Campus Bel Air, Dakar, Senegal., Faye NS; Institut Sénégalais de Recherches Agricoles, ISRA, CRODT, Dakar, Senegal.; IRD, Univ Brest, CNRS, Ifremer, BP 1386, Dakar, Senegal., Faye S; Institut Sénégalais de Recherches Agricoles, ISRA, CRODT, Dakar, Senegal., Linossier I; Laboratory of Marine Biotechnology and Chemistry (LBCM), University of Southern Brittany (UBS), BP 56100, Lorient, France., Le Pennec G; Laboratory of Marine Biotechnology and Chemistry (LBCM), University of Southern Brittany (UBS), BP 56100, Lorient, France.
Jazyk: angličtina
Zdroj: Environmental monitoring and assessment [Environ Monit Assess] 2022 Dec 09; Vol. 195 (1), pp. 185. Date of Electronic Publication: 2022 Dec 09.
DOI: 10.1007/s10661-022-10635-2
Abstrakt: 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.
(© 2022. The Author(s), under exclusive licence to Springer Nature Switzerland AG.)
Databáze: MEDLINE
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