Du bois mort pour la biodiversité. Des forestriers entre doute et engagement

Abstract

Dead wood is a key element in forest biodiversity, which is used as one of the indicators for sustainable development of forests. A survey was conducted among foresters and users in the Landes de Gascogne and île-de-France areas so as to assess practises and social representations associated with dead wood. From the results of the survey, it appears that there is a diversity of practices and divergences about the implications connected with dead wood. The 64 respondents can be divided into roughly six groups (G1: "industrial foresters", G2: the "silvicultural foresters", G3: the "remote foresters", G4: the "environmentalist foresters", G5: the "naturalists" and G6: the "users"). Among other things, they can be differentiated by their management practises, their degree of knowledge about and concern with ecology, their social networks, their aesthetic judgment, their perception of risks and their economic requirements. While underscoring the scarce popularity on average of the biodiversity-related issues, this sociological survey also highlights: the need for a minimal regulatory framework to achieve integrated retention of dead wood, the serious concern of forest managers in the Landes with plant health risks associated with dead wood, and the need for a functional justification for keeping dead wood in the ecosystem.