The participation of the practical partners aims at an intensive exchange of information - between the scientists and the practical partners but also between the practical partners themselves. On the one hand, their needs for improved management are to be recorded; on the other hand, a picture of the usage requirements agreed between the application partners is to be determined. This should take place with the active cooperation of the application partners. The exchange of visitor numbers and the participation in the planned surveys is a general form of cooperation. Rather, however, the project aims at participative modelling by the practical partners.