Duarte, PedroAzevedo, BrunoRibeiro, CatarinaPereira, AntónioFalcão, ManuelaSerpa, DalilaBandeira, RuiReia, João2008-10-172011-10-062008-10-172011-10-062008-10-17http://hdl.handle.net/10284/831Ria Formosa is a natural park managed partly by the Portuguese end-users of the DITTY project – Ria Formosa Natural Park authority, under “Instituto para a Conservação da Natureza (ICN)”. There are many conflicting interests over the management of this important coastal area: fishing, tourism, aquaculture, salt production, harbour activities, urban development and conservation. Furthermore, several institutions, such as the Natural Park Authority, municipalities, the Portuguese Navy, just to mention a few, are involved in decision-making over several areas of the natural park. Within DITTY, several scenarios were selected among those relevant for the management of this coastal ecosystem, considering available information from the end-users, relative importance of the mentioned scenarios, modelling and time constraints.engreport