Add to ORKGInternational audienceABSTRACT-While the objective is to make water and aquatic environments a central component of the urban project, wetland redevelopment operations reveal competing environmental causes. Public policies tend to use of ecosystem models to promote exclusive environmental concerns, limiting human presence to "naturalis-tic" observation. This ecological position competes directly with logic of water valo-rization in the public space, dominated by a landscape approach and a representation of an "urban nature" hygienized and controlled with regard to flood risk. These three motives oust a fourth, historical and social cause, that of "plural water" and the perpetuation of uses prior to the project (vegetable gardens). Based on ...