This status depends on the specific composition of habitats, their evolutionary dynamics, their surface area, their sensitivity to pressures, but also the efficiency of the ecological functions they provide for the balance of the entire marine environment. The assessment of the conservation status of marine habitats, carried out by the UMS PatriNat (MNHN-OFB), is based on a proven scientific method, shared with other European States, and involving most national specialists in the study of benthic communities.
Marine habitats are essential for our health, our quality of life and the maintenance of our economy. Accurately identifying habitat services and anticipating how they will be impacted by changing activities will provide the basis for supporting the implementation of effective protection measures. This information will also be important to generate a collective commitment to marine habitats.
Habitats do not need to be managed overall, but the uses that are made of them and the pressures that are exerted on them do. To do this, Marha uses already established methods for identifying and classifying the different pressures identified on marine habitats, characterizing the sensitivity of the habitats to these different pressures, and then evaluating these pressures through local studies to quantify the uses. This work makes it possible to identify the sectors in which the accumulation of pressures is greater than the tolerance of natural habitats and imposes pressure reduction measures.