Gaëlle Tallec

Hydraulic head interpolation in an aquifer unit using ANFIS and Ordinary Kriging

In this study, Ordinary Kriging (ok), and Adaptive Neuro Fuzzy based Inference System (anfis) are evaluated for assessing hydraulic head distribution in an aquifer unit covering 40 km2. Cartesian coordinates of the samples were used as inputs of anfis. Calibrated models are used to interpolate the hydraulic head distribution on a 50 m square - grid. Both simulations have realistic pattern (R2 > 0.97) even if ok performs slightly better than anfis at sampling location. The two methods capture different patterns. The Comparison of the two distributions allows for identifying area of estimate uncertainty, what can be used to improve the sampling network.

RECOTOX, a French initiative in ecotoxicology-toxicology to monitor, understand and mitigate the ecotoxicological impacts of pollutants in socioagroecosystems

RECOTOX is a cross-cutting initiative promoting an integrated research to respond to the challenges of monitoring, understanding, and mitigating environmental and health impacts of pesticides in agroecosystems. The added value of RECOTOX is to develop a common culture around spatial ecotoxicology including the whole chain of pressure-exposure-impact, while strengthening an integrated network of in natura specifically equipped sites. In particular, it promotes transversal approaches at relevant socioecological system scales, to capitalize knowledge, expertise, and ongoing research in ecotoxicology and, to a lesser extent, environmental toxicology. Thus, it will open existing research infrastructures in environmental sciences to research programs in ecotoxicology of pesticides.