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La mangrove est une formation forestiere caracteristique des littoraux tropicaux vaseux,  essentiellement constituee de paletuviers. Au Cameroun, les mangroves couvrent une   superficie de 2700 km 2 , soit 1,5% de la superficie des forets, repartie telle que 1600 km 2 occupent le Rio Del Rey et  1100 km 2 l’Estuaire du Cameroun. Une etude sur les paiements ecosystemiques a ete conduite dans l’ecosysteme mangrove de l’estuaire du Wouri pour evaluer les enjeux financiers et les risques de pollution lies au transport des personnes et des marchandises. La methode d’echantillonnage s’est faite aleatoirement sur 27 pirogues dans deux debarcaderes principaux de mangroves dans la localite, dont 20 a Youpwe et 07 a  Akwa-Nord, avec les observations basees sur l’utilisation des fiches d’enquetes socio-economiques. Les resultats obtenus montrent que les services ecosystemiques constituent un moyen de subsistence pour les populations riveraines. Le flux des personnes et des marchandises est important et equivaut a un chiffre d’affaires de 12 252 600 F CFA (24 505 USD)/pirogue/an a Youpwe et 3 896 286 F CFA (7 792 USD)/pirogue/an a Akwa-Nord. Toutefois, les activites anthropiques liees a ce transport constituent des menaces pour sa perennisation. © 2015 International Formulae Group. All rights reserved. Mots cles: Mangrove, transport, services ecosystemiques, enjeux financiers, menaces English Abstract The mangrove is a forest formation characteristic of muddy tropical coastlines, mostly  constituted of mangroves. In Cameroon, mangroves covers a superficial area of 2700 km 2 , about 1.5% of the superficial area, divided into 1600 km 2 occupied by Rio Del Rey and 1100 km 2 by Cameroon estuary. A study on the ecosystem services was carried out in the mangrove ecosystem of the Wouri estuary to estimate the financial stakes and pollution risks connected to the transport of persons and goods. A random sample of 27 canoes were taken in two main mangrove landing areas in the locality with 20 and 07 in Youpwe and Akwa-Nord respectively with observations using socio-economic data sheets. The results obtained show  that the ecosystemic services constitute a means of livelihood for the riverine populations. The flux of persons and goods were important and amounts to a turnover of 12 252 600 F CFA (24 505 USD)/canoe/year for Youpwe and 3 896 286 F CFA (7 792 USD)/canoe/year for Akwa-Nord respectively. However, the anthropogenic activities linked to this transport constitute threats to its perpetuity. © 2015 International Formulae Group. All rights reserved. Keywords: Mangrove, transport, ecosystemic services, financial stakes, threats

international journal of biological and chemical sciences

Revenus économiques et pollution écosystémique liés au transport des personnes et des biens traversant les mangroves de l’estuaire du Wouri (Douala, Cameroun)