Anticipating changes in mountain pastures to adapt pastoral systems

Partner RPNs: Luberon, Mont Ventoux, Vercors

INRAE departments and units: ACT-Lessem

The ‘Alpages sentinelles’ action-research network was set up in the Écrins National Park in 2007 following severe drought. Its aim is to anticipate the consequences of climate change on sub-alpine mountain pastures. As such, it is a source of collaboration between INRAE and the three national parks bordering the French Alps.
The network is based on three mechanisms:

  • Forums for debate aimed at sharing a culture of pastoral management of mountain pastures.
  • An observatory to monitor changes in vegetation, grazing practices and weather conditions;
  • Interdisciplinary working groups producing knowledge for farmers;

Thanks to these mechanisms, a number of results have been obtained and promoted to technical stakeholders. Ecologists have shown, for example, that the height of vegetation is an indicator of the sensitivity of grasslands to climatic variability, and that temperature is the main driver of growth peaks. Sociologists have stressed the importance of taking better account of the weariness and hopes of the professionals involved in the network in order to maintain their commitment over the long term. Data from Météo-France has been used to produce agroclimatic profiles that predict the impact of weather conditions on vegetation growth. Lastly, a diagnostic approach has been devised to assess mountain pastures’ vulnerability to climate change.

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