The project of Zone Atelier Pyrenees-Garonne (ZA PYGAR) Pyrénées-Garonne LTSER

Jl Prosbt (1) , Annie Ouin (2) , S. Beranger (3) , Simon Blanchet , Julien Cucherousset (4) , José Darrozes (5) , Marc Deconchat (2) , Jean-François Dejoux (6) , J.P. del Corso (7) , C. Delire (8) , François Delmas (9) , Michel Duru (10) , Didier Galop (11) , Morgane Gibert (12) , Florent Hautefeuille (13) , Wilfried Heintz (2) , Mark Hewison (14) , Aurélien Jamoneau (9) , Emilie Lerigoleur (11) , Francis Macary (15) , Laurent Polidori (16) , C. Schrive (17) , David Sheeren (2) , Virginie Marie Stevens , E. Tabacchi (1) , Nicolas Valdeyron (13) , Philippe Valette (11)

1 ECOLAB - Laboratoire Ecologie Fonctionnelle et Environnement
2 DYNAFOR - Dynamiques Forestières dans l'Espace Rural
3 BRGM - Bureau de Recherches Géologiques et Minières (BRGM)
4 EDB - Evolution et Diversité Biologique
5 GET - Géosciences Environnement Toulouse
6 CESBIO - Centre d'études spatiales de la biosphère
7 LEREPS - Laboratoire d'Etude et de Recherche sur l'Economie, les Politiques et les Systèmes Sociaux
8 CNRM - Centre national de recherches météorologiques
9 UR EABX - Ecosystèmes aquatiques et changements globaux
10 AGIR - AGroécologie, Innovations, teRritoires
11 GEODE - Géographie de l'environnement
12 LA - Laboratoire d'Anthropobiologie
13 TRACES - Travaux et recherches archéologiques sur les cultures, les espaces et les sociétés
14 CEFS - Unité de recherche Comportement et Ecologie de la Faune Sauvage
15 UR ETBX - Environnement, territoires et infrastructures
16 LHEEA - Laboratoire de recherche en Hydrodynamique, Énergétique et Environnement Atmosphérique
17 INEE - Institut Ecologie et Environnement

The ZA PYGAR project aims at studying the spatial dynamics of socio-ecological systems (SES) in SouthWestern France, going from the Pyrenees mountains to the plains of the Garonne river basin. PYGAR tries to answer three main scientific questions: 1/ What are the respective contributions of climate change and local anthropogenic disturbances to ecosystem changes (biodiversity, bio-physical characteristics)? 2/ How human practices drive ecosystem services? 3/ What are the relationships between resources availability and their accessibility, and the historic and prehistoric human population structure? The main transversal question of PYGAR is the adaption and response time of the different SES to global changes. The SES are studied at different time scales from the last glacial maximum to the present-day. PYGAR clusters 17 Labs (40 full-time permanent staffs: 23 researchers/professors & 17 engineers/technicians) from Toulouse and Bordeaux, supported by the University of Toulouse and several French research organisms (CNRS, INRA, IRSTEA, IRD, CNES, BRGM, Météo France). Socioeconomic partners (companies, farmer's associations…) and public services (Occitania Region, Water Agency…) are strongly interested in the project. PYGAR includes 4 territories (sites ateliers): the central Pyrenees mountain range, the Garonne River, the agricultural hills and valleys of the Gascogne region and the Viaur-Aveyron river basin. The theory of SES provides a valuable tool to set up an interdisciplinary approach to deal with the co-evolution and resilience of the social and ecological templates of the studied systems facing global changes (climate change and land cover).

Keywords: Agriculture; Biodiversity; Mountains; Resilience; River water

Domains: Humanities and Social Sciences; Geography

Jl Prosbt, Annie Ouin, S. Beranger, Simon Blanchet, Julien Cucherousset, et al.. The project of Zone Atelier Pyrenees-Garonne (ZA PYGAR) Pyrénées-Garonne LTSER. International Long Term Ecological Rsearch Network- Zones Ateliers & Critical Zone Observatory Networks (LTER-France), Oct 2017, Nantes, France. 2017. ⟨hal-01659265⟩