We all have become aware of the essential contribution of ecosystems to the human welfare. This is a strong driver for taking into account ecosystem services within decision processes. But the connection between ecosystems and theirs services is frequently neither readily apparent nor easy to...

This paper is part of an investigation to evaluate the benefits of landscape policies. Such policies are, within a specific area (here the Monts d’Arrée in Brittany), favouring some landscape attributes. We test out a procedure based on a double device. The first one relies on the choice...