At the seventh Scientific Wadden Sea Symposium (Ameland, 1990) it was
asked if and how policy is influenced by the recommendations of the sc
ientific symposia. We carried out a study on this subject. In this stu
dy we surveyed the literature about science-and-policy to find out wha
t can be expected to be a result of scientific advice in general. Seco
ndly we compared the Wadden Sea policy, both on the national and on th
e trilateral level, with the recommendations of the symposia. In addit
ion we looked at the 'influence-lines' in the Wadden Sea science-and-p
olicy network. We asked a small group of participants of this network
about the impact of the symposia so far and about their expectations f
or the future. In this paper we present the results of the project. We
will give some recommendations to improve the relations between the s
ymposia and the several levels of Wadden Sea policy and management.