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Gwenaël Imfeld

Research Professor CNRS (DR) Earth & Environment Strasbourg
64 %
Libre accès
116
Documents
Affiliations actuelles
  • Institut Terre Environnement Strasbourg (ITES)
  • Institut national des sciences de l'Univers (INSU - CNRS)
  • Université de Strasbourg (UNISTRA)
Identifiants chercheurs
Contact

Présentation

Research interests

Pollutant biogeochemistry
Microbial transformation and ecology in continental hydrosystems
Biodegradation of industrial and micropollutants in wetlands, soils and aquifers
Sustainability science: freshwater sustainability, resilience and adaptation of socio-hydrosystems

Current research

Transformation of micropollutants at the water-sediment interface, in agricultural soils, in urban setting and on the catchment scale with stable isotope fractionation (compound-specific isotope analysis)

Understanding the transport and transformation of micropollutants from both toxic and diffuse sources presents a significant challenge in the 21st century, becoming crucial for the preservation of soil and water resources. Micropollutant fluxes, both surface and subsurface, can be intercepted and transformed in transitional reactive zones, such as wetlands and the interface between groundwater and surface water, before reaching downstream ecosystems. These reactive zones act as "biogeochemical hotspots," featuring dynamic interfaces among water, soil/sediment, and microorganisms. These zones exhibit complex combinations of electron acceptors and donors, which reflect microbial diversity and biogeochemical activity.

Key research questions in this field include: What are the hydrological and biogeochemical dynamics of these hotspots concerning pollutant transport and microbial transformation? What are the taxonomic and functional diversity, physiology, and metabolic roles of microorganisms involved in pollutant degradation? How do microorganisms respond to pollution regimes and hydro-biogeochemical fluctuations, and how do these responses influence key ecosystem services, such as water quality improvement, flood mitigation, and biodiversity enhancement? My research focuses on elucidating the microbial processes underlying pollutant transformation in agricultural systems, aquifers, and wetlands.

Domaines de recherche

Sciences de l'environnement

Compétences

Stable isotope analysis Microbial ecology Catchment hydrology

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Publications