Waters and territories

eaux et territoires

Faced with the challenges represented by the fragility of water resources in the context of the Anthropocene, the objective and commitment of the Water and Territories team is to understand the mechanisms and interactions of the different compartments of socio-eco-hydrosystems in an approach involving interaction between science and society in order to develop sustainable solutions.

The question of water resources under an approach of the functioning of the resource, the impact of climate change and human activities, as well as the methods of management of this resource is at the heart of its approaches. The team also recognizes itself in a very interdisciplinary approach. It includes hydrologists, hydrogeologists, geophysicists, geochemists and organic chemists and claims partnerships with teams outside these disciplinary fields in the field of human and social sciences (geographers, lawyers, political scientists, sociologists, anthropologists). In addition, for several recent projects, the team is also part of a transdisciplinary approach, that is to say in research approaches co-constructed with non-academic partners, which constitutes one of its points of originality.

Members

ronan Abhervé PhD Student
Luc Aquilina Professor Rennes 1
Olivier Bour
Professor Rennes 1
Eliot Chatton Research Engineer - OSUR
Alexandre Coche Post-doctoral Position  
Nicolas Cornette PhD Student
Alain Crave Junior Scientist CNRS
Jean-Raynald de Dreuzy Senior scientist CNRS
Elias Ganivet PhD Student  
Gérard Gruau Senior scientist CNRS
Salomé de Foville Research Engineer  
Emilie Jardé Junior Scientist CNRS
Laurent Jeanneau Junior Scientist CNRS
Ayoob Karami Post-Doctoral position Ayoob Karami
Thierry Labasque Research Engineer CNRS
Marine Liotaud Engineer CNRS  
Laurent Longuevergne Senior scientist CNRS
Martin Le Mesnil PhD Student
Frédérique Moreau Assistant Professor Rennes 1  
Florence Poirier PhD Student univ Caen  
Clément Roques Associate Researcher Univ. Neuchâtel
Virginie Vergnaud IResearch Engineer CNRS - OSUR

 

Scientific subjects

Dynamics of hydrogeological processes: climate-geomorphology interaction and its control on flow partitioning, storage, distribution of residence times and transfer of elements;

Understanding of processes at deep-surface interfaces: groundwater-river-atmosphere exchanges, hydroecology, dynamics of biogeochemical processes, morphology of watercourses;

The work focuses on the functioning of deep hydrogeological systems. They also focus on the mobilization of the different compartments of the hydrosystem, in particular on the impact of groundwater dynamics on the mechanisms of destabilization of organic C in soils and its export to aquifers and rivers.

Water resource management: Evolution of water resources and extreme events (droughts and floods) in response to global changes;

This approach focuses on the resilience of drinking water supply systems, the identification of new resources and the modeling of management practices with regard to the dynamics of hydrological systems. Through a modeling approach, we seek in particular the hydrological determinants of the systems and their temporal and spatial variability, in response to climate change.

Origin and transfer of anthropogenic pollutants and emerging pollutants (geochemical nature of aquifers, sources and occurrences of contaminants, biodegradation/dynamics, natural reactivity of pollutants, geochemical flows, etc.);

Projects dealing with this issue concern anthropogenic pollutants such as nitrates and phosphorus and emerging pollutants such as drug residues and biocides. Through observation-experimentation approaches, the aim is to understand the dynamics of these pollutants through the landscape mosaic in connection with natural organic matter as well as their impact on biogeochemical cycles.

Water uses, ecosystems and human activities (impact of flows and human activities on biological communities, ecosystem services, governance and actors, etc.);

The projects involving the human sciences that are being developed within the team aim to address the questions of uses and the place of the different compartments of the ecosystem within uses. They address in particular ecological and social approaches on and the inclusion of poorly represented human communities and non-human communities within modes of governance. These projects implement transdisciplinarity by co-constructing research questions with actors in the field.

Current projects

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Dynamics of hydrogeological processes: climate-geomorphology interaction and its control on flow partitioning, storage, distribution of residence times and transfer of elements;

Chair of Excellence “Water Resources of the Future” (Hydrogeomorphological analysis of the impact of climate change on water resources at the regional scale) (2019-2021). Funding from Rennes Métropole and Rennes1 University.

Understanding of processes at deep-surface interfaces: groundwater-river-atmosphere exchanges, hydroecology, dynamics of biogeochemical processes, morphology of watercourses;

Rivers 2070 (A new approach to rivers: 50-year outlook at the crossroads of natural and anthropogenic dynamics, 2019-2021). Prime 80 project. https://miti.cnrs.fr/projet-multi-quipe/rivieres2070/

AMI Eau “Berceau” project (shared management strategies for the restoration of waterways, 2017–2021, funding from the Brittany Region, Loire Brittany Water Agency and department 35). LEARN project (impact of the removal of dams on the Sélune River, 2019-2023, funding from the Seine Normandy Water Agency).

BOSCO project (Space Observatory of Soil Water Content in Brittany, 2022-2023, CNES funding) https://www.spaceclimateobservatory.org/fr/bosco-bretagne

Water resource management: Evolution of water resources and extreme events (droughts and floods) in response to global changes;

Rivages Normands 2100 project (climate change impact on flooding by groundwater overflow) (2019-2024). Funding Seine Normandy Water Agency, DREAL and 7 local authorities. http://alex.gauvain.free.fr/RIVAGES

Chair of the Rennes 1 Foundation “Waters and Territories” (impact of climate change on water resources) (2019-2021). Funding from the Rennais Basin Water Authority.

https://fondation.univ-rennes1.fr/chaire-eaux-et-territoires

Origin and transfer of anthropogenic pollutants and emerging pollutants (geochemical nature of aquifers, sources and occurrences of contaminants, biodegradation/dynamics, natural reactivity of pollutants, geochemical flows, etc.);

AMI Water project “Diagnosis of parcels at risk” (phosphorus and phytosanitary transfers)(2018-2021).

ImPro project (impact of sedimentary flows on the proliferation of green algae on mudflats) (2019-2021).

Water uses, ecosystems and human activities (impact of flows and human activities on biological communities, ecosystem services, governance and actors, etc.);

Interreg project (France – Channel – England) CPES (Channel Payment for Ecosystem Services) (2017-2021), 14 Franco-English partners).

https://www.cpes-interreg.eu/en/

Loire-Brittany Water Agency project (2020-2021) Experimentation of a "Private-Private" PES mechanism in a territory with high environmental challenges and high potential for innovation (Lac au Duc, Morbihan, 3B1 territory).

PIA3 EQUIPEX+ TERRA FORMA project (Designing and testing the intelligent observatory of territories at the time of the Anthropocene, 2021-2029), PIA funding, and ANR

https://terra-forma.cnrs.fr/

Team supports

Part of the team's activities is based on field practice through the observatories in which it participates: H+ and AgrHys observatories, the Sélune watershed and the Armorique workshop area. It therefore participates fully in the OZCAR and e-LTER research infrastructures. Within the observatories, the work makes it possible to analyze the functioning of hydrosystems, in particular in its medium and long-term trends and the impact of direct and indirect human activities. They also allow a strong multidisciplinarity through the meeting of teams from other laboratories and they also offer the possibility of forging partnerships with non-academic actors in the field.

https://hplus.ore.fr/

https://www6.inrae.fr/ore_agrhys

https://osur.univ-rennes1.fr/za-armorique

https://www.ozcar-ri.org/fr/ozcar-observatoires-de-la-zone-critique-applications-et-recherche/

The OSUR Condate-Eau platform is also a structure that supports the research carried out by the team and that the team animates in return. In addition to offering tools for characterizing the origin of water and elements and constraining their transfer into the environment, the platform is also the place where many partnerships are built.

https://osur.univ-rennes1.fr/condate-eau

The team contributes strongly to the Water Resources and Expertise Center in Brittany CRESEB. https://www.creseb.fr/

The team also participates in the Joint Environmental Intelligence Program at OSUR and MSHB PIEC, which is being built at the scale of the Rennes site.

https://osur.univ-rennes1.fr/PIEC