The "Diffuse pollution" team is specialised in the study of the dissipation of crop protection products within catchment areas.
The "Diffuse pollution" team pays particular attention to the role of inter-fragmented spaces, on different scales:
- Local (metric), including hydrological discontinuities: untreated areas, grass strips and woodland in particular, ditches,
- Those included in groups of plots or slopes (hectometric)
- Those included in small catchment areas (mileage).
The team has developed recognised expertise in:
- The combined monitoring of natural conditions linked to water and of crop treatment products in the soil and water systems (on a small scale)
- Experimentation in the field and the laboratory,
- Local and integrated mechanistic modelling (hydrological interface / discontinuity). In particular, they address the issue of the role of lateral flow in water transfer and the consequences in terms of the transfer of pesticides to surface waters.
|BUFFER ZONES GUIDES AVAILABLE|
They have been working for 15 years on the influence of landscape features, including les zones tampons enherbées, in the transfer of crop protection products to surface water. They work in connection with the aquatic environments analysis laboratory, to improve the monitoring methods for water quality concerning crop protection products in small catchment areas. The research team provides support for the public authorities (Ministries of Agriculture and the Environment, ONEMA – The French National Agency for Water and Aquatic Environments) in the form of media (reports, guides, software) or as expertise (for example, participation in regional and national work groups).
With the introduction of the environmental protection areas system, resulting from Article 21 of the Law on water and aquatic environments of 30 December 2006, and especially the choice of the 507 priority "Grenelle" catchments, the work of the team now also broaches catchment feeding areas particularly where water resources are mainly on the surface.
With the introduction of the environmental protection areas system, resulting from Article 21 of the Law on water and aquatic environments of 30 December 2006, and especially the choice of the 507 priority "Grenelle" catchments, the work of the team now also broaches catchment feeding areas.
The team develops guidelines for diagnosis and design of grassed buffer zones (à nouveau lien sur zones-tampons): read more.
- SIE Pesticides
- Ecophyto 1: assessment and remediation of the effects of pesticides
- Ecophyto 2: Buffer Zones Working Group
Tools and techniques
- Grass strip organisation (Villié-Morgon, department 69)
- Monitoring at the outlet of the Morcilla (5 km²) and Ardières catchment areas (200 km²) in the Beaujolais wine region (department 69)
- Hydrological monitoring on a slope and two pits at the ARVALIS Plant Institute (agricultural applied research organisation) of La Jaillière (department 44)
- Rainfall and runoff simulator.
- Experimental canal
- Micropollutant team of laboratory for physicochemical analyses of aquatic environments
Make-up of the team
Guy Le Henaff
Rafael Munoz Carpena
Staff on fixed-term contracts