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INRA
24, chemin de Borde Rouge –Auzeville – CS52627
31326 Castanet Tolosan CEDEX - France

Dernière mise à jour : Mai 2018

Menu Logo Principal Logo partenaire logo CARRTEL

Centre Alpin de Recherche sur les Réseaux Trophiques des Ecosystèmes Limniques

UMR CARRTEL

Centre Alpin sur les Réseaux Trophiques et Ecosystèmes Lacustre

Bioeochemical cycles & Meta-Ecosystems

coordinators : 
Dr. Jean-Philippe Jenny, Researcher 
Dr. Florent Arthaud, Assistant Professor 

Table below : Summary presenting the objectives and specific questions structuring the MyCYCLE axis for the 2020-2025 project.

MyCycle : Méta-ecosystème & Interfaces          

GOALS

THEMES

 SPECIFIC QUESTIONS

 

Understanding system-wide nutrient cascades: impact on lake operation, material storage and GHGs

 

TRANSFORMATION & INTERNAL RE-ALLOCATION

Contribution of the benthic compartment in the fate and transformation of nutrients and the functioning of the lake

Contribution of littoral aquatic vegetation in the control of stoichiometry of nitrogen, phosphorus and carbon in lakes?

CNP contribution to primary production and sedimentation of C

EXTERNAL CONTRIBUTIONS & EXCHANGES WITH THE ATMOSPHERE

Respective share of atmospheric nitrogen deposition in highland lakes and their watersheds? Their impacts on the functioning of the lacustrine meta-ecosystem?

-Role of the watershed (land use, CC, connectivity) in the regime of transfers of matter and sedimentation in lakes, lake deltas and dams

-Estimation and variability of GHG emissions by reservoirs and lakes?

                           

 

Understand the structuring role of BV and past and current occupation on the ecological status and emerging properties of the lake

 

LONG-TERM TRAJECTORY & HISTORICAL VARIABILITY

 

INTEGRATION OF LAC-BASIN SCALE CYCLES

 

- To determine the overall balance of C sequestration of lakes to the Anthropocene; analyze the spatial and temporal variability of C sequestration (organic and mineral)

- What are the sources and factors of variability of C sequestration: erosion, primary lake or terrestrial production

Role of human activities at centennial / millennial scales on the current functioning of lakes?