Ecological status and sources of anthropogenic contaminants in mangroves of the Wouri River Estuary (Cameroon)

MARINE POLLUTION BULLETIN

卷:109

Article; Proceedings Paper

Fusi, Marco¹  Beone, Gian Maria²  Suciu, Nicoleta Alina²  Sacchi, Angela²  Trevisan, Marco²  Capri, Ettore²  Daffonchio, Daniele¹  Din, Ndongo³  Dahdouh-Guebas, Farid^4,5  Cannicci, Stefano^6,7,8 

[1] KAUST, Biol & Environm Sci & Engn Div, Thuwal 239556900, Saudi Arabia

[2] Univ Cattolica Sacro Cuore, Inst Agr & Environm Chem, Via Emilia Parmense 84, I-29122 Piacenza, Italy

[3] Univ Douala, Fac Sci, Dept Bot, POB 8948, Douala, Cameroon

[4] ULB, Fac Sci, Dept Organism Biol, Lab Syst Ecol & Resource Management, Ave FD Roosevelt 50,CPI 264-1, B-1050 Brussels, Belgium

[5] VUB, Fac Sci & Bioengn Sci, Dept Biol, Lab Plant Biol & Nat Management, Pl Laan 2, B-1050 Brussels, Belgium

[6] Univ Hong Kong, Swire Inst Marine Sci, Hong Kong, Hong Kong, Peoples R China

[7] Univ Hong Kong, Sch Biol Sci, Hong Kong, Hong Kong, Peoples R China

[8] Univ Florence, Dept Biol, Via Madonna del Piano 6, Sesto Fiorentino, Italy

关键词: Mangrove;    Contaminants;    Macrobenthos;    Cameroon;    Wouri Estuary;    Sediment;   

DOI  :  10.1016/j.marpolbul.2016.06.104

来源: Elsevier

【 摘 要 】

Mangroves are critically threatened by human activities, despite the important ecosystem functions and services they provide. Mangroves in Cameroon represent no exception to the worldwide trend of mangrove destruction, especially around Douala, on the Wouri river estuary. In two sites around Douala, we assessed the presence of sterols, PAHs, PCBs, DEHP, DDT and its metabolite p,p'-DDE and potentially toxic metals in sediment samples. As a proxy of ecological quality, we measured the diversity and abundance of macrobenthos assemblages. We detected p,p'-DDE contamination, with concentrations higher than 3 mu g kg(-1) in 16 out of 26 samples which were attributed to recent widespread use of DDT. The detection of sterols revealed faecal contamination. Significant sensitivity of the macrobenthos to contaminants was revealed, with possible implications on the overall mangrove vulnerability to climate change and on the provision of ecosystem services to local populations. (C) 2016 Elsevier Ltd. All rights reserved.

【 授权许可】

Free