Saproxylic beetles in the Grésigne forest management

Abstract

The Grésigne State Forest (Tarn, France) has been included in the European network Natura 2000 for its exceptional entomological richness, especially with saproxylic beetles. Among the many species encountered, the three species listed in the annexe II of the Habitat Directive, Limoniscus violaceus, Cerambyx cerdo and Lucanus cervus, are characteristic of different habitats (cavities at the bottom of the trees, dying trees and decaying wood) and imply specific management rules for their conservation. First, an "objective document" (Docob) was drawn up in appliance of the Habitat Directive. Then, a new forest management plan (2004-2021) was established, including measures to preserve these high heritage value species: setting up a network of old stands, increasing the dead wood volume compartment, preserving trees with cavities. Part of these measures is financed by a Natura 2000 contract, on a French state-European Community joint basis.