The BIODIVERSITY The problems caused by the road building The measures taken in favor of the nature preservation.

Présentation au sujet: "The BIODIVERSITY The problems caused by the road building The measures taken in favor of the nature preservation."— Transcription de la présentation:

1 The BIODIVERSITY The problems caused by the road building The measures taken in favor of the nature preservation

2 Presentation of the site (carte1) VEGETATION: Forests Bocage Moor FAUNA: Big mammals (Roe Deer,Boar) Small mammals (Fox,Otter…) Batratians Avifauna, reptiles, invertebrates…

3 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)

4 The road causes the fragmentation or isolation of habitat and population(carte3)

5 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

6 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

7 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?

8 Way for fauna above the road(carte4)

9 Bibliography Carte1:Acte des troisiemes rencontres “routes et faune sauvage”.Ministere de l’ammenagement du territoire et de l’environnement 1998. Carte2-4:Instruction mixte a l’echelon central.A83 Rennes- Avranche. Ministere de l’equipement des transports et du tourisme.Direction des routes.1992. 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).