Under CopyrightHommen, U.U.HommenSchäfers, C.C.SchäfersStreloke, M.M.Streloke2022-03-1019.05.20042004https://publica.fraunhofer.de/handle/publica/34500310.24406/publica-fhg-3450031. Which studies are available? ,,manipulated" field studies for registration purposes - No; routinely environmental monitoring (e.g. WFD) - No; chemical monitoring on non target areas -Yes 2. Which approaches have been used for which questions? 3. Which effects of usual agricultural practice could be detected? 4. What are the relations between monitoring studies and the registration process? Suggestions: Focus on ecological monitoring in regions with high exposure potential, e.g. - intensive pesticide use; - high risk of run-off entries; - small catchment areas; -special areas ("Sondergebiete") with reduced mitigation measures Causal analysis of pesticide effects in model ecosystems with realistic crop and region specific pattern of pesticide entries - e.g. Alterra's "potato-mesocosm study" (WEPO7/019).en570610620660presentation