Lure : Fir encroachment and biodiversity in the Ventoux biosphere reserve

Which links between access modes to resources and biodiversity ?

Start date of project



Lure mountain


In September 2002, during the annual meeting of French biosphere reserves, it was decided to mount a research programme around shrub encroachment in partnership with the four biosphere reserve managers. An interdisciplinary research team was set up on the Lure mountain including researchers from University of Paris I and INRA in Avignon (ecologist, geographer, ethnologist, ethologist, forester and modeller). Thanks to funding from the IFB, M. Etienne proposed amalgamating each individual's approach by co-constructing a multi-agent system representing the interactions between natures and societies on the Lure mountain.

The approach was broken down into four phases:

  1.  Co-constructing the conceptual model using the ARDI method by identifying the main stakeholders, resources and dynamics taking part in Juniper encroachment and the dispersal of fir trees;
  2. Implementing the multi-agent model and identifying interactions required to deepen available knowledge;
  3.  Developing complementary interdisciplinary research on vegetation dynamics, grazing organisation, tree management, fir genetic diversity and the Orsini's viper population dynamics;
  4.  Developing probable evolution scenarios depending on whether or not livestock rearing was maintained, confirming global warming or implementing a dynamic forestry for storing carbon or for preserving the genetic biodiversity of the fir tree.

The approach stimulated close and fruitful collaboration between researchers from different disciplines and forest managers, and the implementation of interdisciplinary work culminating in crossed perspectives on the question of the biodiversity and access to resources. The attempts to use the model with local stakeholders to discuss the conflicts of use around Mont Serein or the objectives document of the Natura 2000 site on the Lure Mountain were unsuccessful.


French Institute for Biodiversity (IFB)


M. Etienne, E. Faugère,
E. Lécrivain
(Inra Ecodéveloppement Avignon)
B. Anselme, P. Pech, L. Simon (Univ. Paris I)
B. Fady (INRA, URFM Avignon) A Lyet (CNRS Montpellier)

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