Agrocampus Ouest, the CNRS, INRA, the Grand Bassin de l'Oust Mixed Trade Union and the University of Rennes 1 worked together to take stock of their research on the Lac au Duc watershed, aimed at :
- the estimation of inputs, location of sources in the watershed and determination of the objective of reducing inputs according to the uses of the lake
- the costs / efficiencies / benefits estimates of the reduction of the contributions
The purpose of this "balance sheet" report is to present the results acquired between January 2018 and September 2019 on the Lac au Duc watershed (Yvel-Hivet watershed) as part of the work carried out by the teams.