Résumé
What can economics say about the management of ambivalent biological invasions? Contrasting with the usual assumption according to biological invasions are necessarily a public bad to be prevented or eradicated, the key of this paper is to ask, from an economics standpoint, how positive and ambivalent ecological and economic impacts affect policy making. Reviewing the literature, we highlight the gap between ecological and economics perspectives and discuss the importance of ecological and economic functioning in designing an appropriate policy response to biological invasions. In order to derive methodological insights, we describe a typology of ambivalences and discuss the economics of bio-invasions in the light of this typology presenting a road map for future researches.