Ecological surveys
Cergy, Île-de-France
Ecological and biodiversity surveys in Cergy: four-season fauna and flora surveys, VNEI, CNPN application, Natura 2000 impact assessment and the mitigation hierarchy (Avoid-Reduce-Offset, "ERC").
Updated 16 July 2026
Cergy · Île-de-France
Ecological surveys in Cergy.
In Cergy, the ecological stakes revolve around the loop of the Oise, its alluvial wetlands and the ponds of the former leisure park, a whole that forms a major aquatic continuity in the north-west of the Île-de-France. The proximity of the Vexin and its farmland plains adds stakes linked to open-habitat species, whose survey protocols differ from those applied in an urban context. Our ecologists carry out fauna and flora surveys over a full biological cycle, the delineation of wetlands under the Water Act, the ecological chapter of the impact assessment and the CNPN application.
In Cergy, the wealth of natural habitats (Natura 2000 sites, ZNIEFF, protected species) makes ecological survey work a structuring prerequisite for development. Four-season surveys, VNEI, CNPN application and the mitigation hierarchy secure environmental authorisation and planning permission.
Our services
Ecological surveys in Cergy: what we do.
Four-season fauna and flora surveys
Ecological chapter of the impact assessment (VNEI)
Protected-species derogation application (CNPN)
Natura 2000 impact assessment
Mitigation hierarchy (Avoid-Reduce-Offset) and offset measures
Coverage area
Ecological surveys in Cergy and the surrounding area.
Our teams travel from Aix-en-Provence to Cergy and the neighbouring municipalities of the 95 department.
FAQ
FAQ, ecological surveys in Cergy
Other locations
Ecological surveys across the region.
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