Monitoring parameters:
Piezometric monitoring:
20 piezometers have been installed and monitored monthly since 2016.
Physico-chemical monitoring:
A physico-chemical probe is installed on the marsh and measures water transparency, conductivity, dissolved oxygen, water pH, water height and silt depth.
Ecological monitoring:
A monitoring of amphibians, reptiles (laying 80 herpetological plates), fish and aquatic invertebrates was carried out. The Large Marsh Grasshopper population has been monitored since 2019.
The floral procession evolution is monitored in oligotrophic and peaty areas by applying a National Museum of Natural History methodology to record the communities evolution.
Bird counts have been carried out by the Hunting Federation of Ille-et-Vilaine Department for 30 years. Since 2016, they have been supplemented by a winter waterbird count, a monitoring of the reedbed passerines, ardeidae and anatidae reproduction. A mapping of the singing passerines is also carried out.