International audienceIn France, recent researches on « shrinking cities » outline various local public policies which have been implemented for a new attractiveness of these urban areas. However, these studies do not address too much the ecological transition in this urban regeneration. In fact, this article aims to outline potentials contributions and impacts of alternative strategies of local resources management by firms. In order to measure these impacts, we have contextualized an urban shrinkage thought urban utopia and ecological transition. In addition, we have used for empirical analysis data from city of Dunkerque (France) where various industrial ecology. projects have been implemented since many years. With these both approaches...