The course includes a field trip, visits to institutions, participations on a Symposium or similar. Each study is responsible for a service for the students. Students must self-financing depending on destination. Excursion: In preparation, the collective work of biotopes to be visited. Group work will be presented orally and in writing. The reports written most be completed during the excursion. Symposium: Students make a presentation to the symposium and a final report.