Abstract
Studies of a natural parks network revealed the stakeholders difficulty to prioritize the ecosystem services directly. In addition, there is a lack of Decision Support Systems to manage environmental services, which are the most important in Mediterranean protected areas. As these services are free, their management should be supported by the society. We propose a multiple criteria methodology to manage and evaluate the ecosystem services by using group decision making. We define criteria, indicators and methods for allocating resources to the most important services for the stakeholders.
