The model has then been built in order to take into account all these aspects. It is located on the Laboratoire Halieutique Linux web server in Rennes, and gathers the work of all partners. In order to test the impacts of various management measures, the user can change a large number of parameters and compare the biological and economic consequences of these changes. An example of a change in the number of boats by fleet is presented Figure 2. Thanks to the powerful web server computer, each simulation can be run in few seconds of calculation.
Some outputs are displayed as simple matrices, some others use a graphical application.
The detail of the model is not presented here, for that it is just an example of application of the methodology we described. We have tried to explain how useful the addition of an Internet interface could be, compared to a usual programmed model. This methodology can be easily implemented, by adding HTML tags to outputs files. Given the fast development of new technologies, it is clear that this kind of methods will be more and more used in all scientific fields, providing a useful tool for data analysis. Xith annual conference of the EAFE, Dublin, April 7 to 10, 1999.