TY  - JOUR
AU  - Vanderborght, J.
AU  - Tiktak, A.
AU  - Boesten, J.J.T.I.
AU  - Vereecken, H.
TI  - Effect of pesticide fate parameters and their uncertainty on the selection of worst-casescenarios of pesticide leaching to groundwater
JO  - Pest management science
VL  - 67
SN  - 1526-498X
CY  - New York, NY
PB  - Wiley Interscience
M1  - PreJuSER-14524
SP  - 294 - 306
PY  - 2011
N1  - Record converted from VDB: 12.11.2012
AB  - For the registration of pesticides in the European Union, model simulations for worst-case scenarios are used to demonstrate that leaching concentrations to groundwater do not exceed a critical threshold. A worst-case scenario is a combination of soil and climate properties for which predicted leaching concentrations are higher than a certain percentile of the spatial concentration distribution within a region. The derivation of scenarios is complicated by uncertainty about soil and pesticide fate parameters. As the ranking of climate and soil property combinations according to predicted leaching concentrations is different for different pesticides, the worst-case scenario for one pesticide may misrepresent the worst case for another pesticide, which leads to 'scenario uncertainty'.Pesticide fate parameter uncertainty led to higher concentrations in the higher percentiles of spatial concentration distributions, especially for distributions in smaller and more homogeneous regions. The effect of pesticide fate parameter uncertainty on the spatial concentration distribution was small when compared with the uncertainty of local concentration predictions and with the scenario uncertainty.Uncertainty in pesticide fate parameters and scenario uncertainty can be accounted for using higher percentiles of spatial concentration distributions and considering a range of pesticides for the scenario selection.
KW  - Climate
KW  - Computer Simulation
KW  - Environmental Monitoring
KW  - European Union
KW  - Pesticides: analysis
KW  - Pesticides: chemistry
KW  - Risk Assessment
KW  - Soil Pollutants: analysis
KW  - Soil Pollutants: chemistry
KW  - Uncertainty
KW  - Water Pollutants, Chemical: analysis
KW  - Water Pollutants, Chemical: chemistry
KW  - Pesticides (NLM Chemicals)
KW  - Soil Pollutants (NLM Chemicals)
KW  - Water Pollutants, Chemical (NLM Chemicals)
KW  - J (WoSType)
LB  - PUB:(DE-HGF)16
C6  - pmid:21308955
UR  - <Go to ISI:>//WOS:000287680000007
DO  - DOI:10.1002/ps.2066
UR  - https://juser.fz-juelich.de/record/14524
ER  -