Client
Ministry of Ecological Transition – General Directorate of Energy and Climate
CALENDAR
2021-2025
LOCALISATION
Off the coast of the islands of Groix and Belle-Ile, FRANCE
Context
Since the Essoc Law, the first steps of the authorization procedure for the construction of a marine wind farm project and its connection are the responsibility of the State.
This was the case for the creation of the current state of the environment in the areas on which the competitive bidding procedures for the implementation of the projects will be based.
Setec énergie environnement was responsible for the creation of this current state of affairs. the AO5 area in South Brittany, across all biological compartments (marine habitats, benthic communities, plankton, fish, molluscs, crustaceans, marine megafauna, avifauna, chiroptera…), and some physical compartments such as water quality, noise (submarine and airborne) and the landscape.
DETAILED MISSIONS
The mission consisted of conducting, in addition to a bibliographic initial report, field studies in the open sea (20 km from the coast) in high-tide conditions and at depths of 80 to 100 m, necessary for all the compartments studied over a period of 1 to 2 years:
- For water quality: measurements and water sampling (1/month);
- For underwater noise: passive listening with hydrophones and C-PODS (continuous);
- For airborne noise: passive listening (2/year);
- For marine habitats and benthic communities: sampling by bucket (2/year), videos and photos by ROV (1/year);
- For plankton: measurements and sampling (1/month);
- For halieutic populations: scientific fishing (1/season);
- For the avifauna and the marine megafauna: expertises by boat and by plane, with observers (1/month);
- For chiropterans: passive listening on land and at sea (continuous from April to October);
- For the landscape: description and identification of the issues.
