The BIODIVERSITY The problems caused by the road building The measures taken in favor of the nature preservation
Presentation of the site (carte1) VEGETATION: Forests Bocage Moor FAUNA: Big mammals (Roe Deer,Boar) Small mammals (Fox,Otter…) Batratians Avifauna, reptiles, invertebrates…
The Forestry clump Main moving of Mammals National road RENNES Forest of Rennes Forest of Chevre Forest of Liffre FOUGERES Movements of big mammals in the forestry clump(carte2)
The road causes the fragmentation or isolation of habitat and population(carte3)
The necessary measures to restore the exchange quality: Creation of an ecological network of connected hedges like bocage Building fauna ways through the road Building walls along the road in order to avoid collisions
The necessary measures to protect the interesting areas Classification as N.D. in the Plan of Soil Occupation (P.O.S.) Biotope Order Land acquisition financed by the public service Contract between the State and farmers
The destruction of habitats and population The Cornilla varia:Expropriation order The moor of “Beauge”: A Floristic inventory must be compiled before any measures are taken What are the necessary measures to limit the road impact?
Way for fauna above the road(carte4)
Bibliography Carte1:Acte des troisiemes rencontres “routes et faune sauvage”.Ministere de l’ammenagement du territoire et de l’environnement Carte2-4:Instruction mixte a l’echelon central.A83 Rennes- Avranche. Ministere de l’equipement des transports et du tourisme.Direction des routes Carte3: L’autoroute des estuaires et la dynamique de l’agglomeration rennaise.Impact sur le massif des marches de Bretagne.Office National des Forets.Direction Regional de Bretagne(1992).