Research and teaching centre
environmental geosciences
Research and teaching centre
environmental geosciences

Faced with the growing challenges of climate change and pressure on natural environments, understanding and sustainably managing the water cycle is more crucial than ever. CEREGE's “Water Resources and Cycle” cross-disciplinary action mobilises interdisciplinary expertise to explore the dynamics of water in all its forms: flows, storage, quality, interactions with human activities and ecosystems. Our work focuses on analysing both the quantitative and qualitative aspects of the resource, in a variety of contexts ranging from continental environments to coastal and wetland areas (lagoons, deltas, mangroves), particularly in Mediterranean and intertropical regions. They are based on the cutting-edge analytical and experimental resources developed in CEREGE's technical centres, which enable the water cycle to be explored on different time and space scales. By integrating water uses and their impacts from a systemic perspective, this area contributes to a better understanding of the interactions between climate, hydrosystems and societies, in order to anticipate and limit future pressures.

Doctoral theses

Theses in progress

Supervisors: Christine Vallet-Coulomb (CEREGE), Abdallah Mahamat Nour (U. N'Djamena), Florence Sylvestre (CEREGE)

Hugo Pellet (2025) : The dynamics of air and water flows in a coastal karstic carbonate massif and the impact on the alteration of the walls: application to the Cosquer cave and the state of conservation of its walls and its works.

Related publications :

Garance Marlier : Controlling the ecological and hydromorphodynamic resilience of a coastal system using soft engineering and optimal calculation (CONIFER)

Related publication : https://hal.science/hal-04786177

Souleyman Abba (2023): Hydrological, geochemical and isotopic functioning of volcanic lakes in Adamaoua (North Cameroon)

Related publication : https://hal.science/hal-04320382v1 

Thibaut Garin (2022) : Constraining recharge, flow modalities and structures in a carbonate context: application to water resources in the Huveaune and Port-Miou karst catchments (south-east France)

Related publication : https://hal.science/hal-03469966v1

Clément Outrequin (2022) : The 17O-excess of plant silica: towards a new indicator of atmospheric humidity

Related publications : 

Jérôme Texier (2022) : Characterisation of nappe-Rhône exchanges and the self-purification capacity of riverbanks: application to the Jouve site (Sorgues)

Related publications :

Abdallah Mahamat Nour (2019): Hydrological, chemical and isotopic functioning of the main tributary of Lake Chad: the Chari-Logone system

Related publications :

Aladin Andrisoa (2019): Ecological impacts of groundwater discharge to Mediterranean coastal lagoons

Related publications :

Marine David (2019): Influence of groundwater inputs on the hydrological and biogeochemical functioning of Mediterranean lagoons: the case of the L'Or lagoon

Related publication : https://hal.science/hal-02117547v1

Chloé Poulin (2019): Hydrological balances and study of the recharge of 3 lake-acquifer systems in the Lake Chad basin using a multi-tracer geochemical approach (18O,2H, 36Cl, 14C)

Related publication : https://hal.science/hal-02091134v1

Rachid Adallal (2019): Environmental variability of lakes in the Moroccan Middle Atlas: hydrogeochemical and hydrological functioning and response to climate change

Related publications :

Camille Bouchez (2016): Assessment and dynamics of river-lake(s)-aquifer interactions in the Lake Chad hydrological basin

Related publications:

Pierre Seraphin (2016): Contribution of isotope tracing (δ 18O and δ D) to the understanding and hydrogeological modelling of the Crau aquifer

Related publications :

Teaching

Educating future generations about the challenges of the water cycle, as a vital resource and an essential component of the climate and environmental system, is a central challenge for our action. CEREGE is committed to this mission by contributing to a number of degree, master's and doctoral courses in geosciences, hydrology, climate, environment and sustainable resource management. These courses are based on the most recent scientific advances, a strong link with the laboratory's research projects, and a focus on territories and societal issues.

Long-term observation activities

In a context of accelerating global change, long-term environmental observations are essential for understanding the evolution and state of water resources, hydro-ecosystems and territories. CEREGE is actively contributing to these efforts through the ongoing monitoring of key sites in conjunction with national and international observation networks. These activities provide essential data for research, teaching and prospective modelling, as well as decision support for sustainable management of water and the environment.