An improved soil organic matter map for GeoPEARL_NL : Model description of version 4.4.4 and consequence for the Dutch decision tree on leaching to groundwater

Berg, F. van den; Tiktak, A.; Hoogland, T.; Poot, A.; Boesten, J.J.T.I.; Linden, A.M.A. van der; Pol, J.W.

doi:10.18174/424920

Cited by 18 publications

(26 citation statements)

References 17 publications

(24 reference statements)

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“…A general principle of tiered risk assessment is that lower tiers should be more conservative than higher tiers. To be sure of this requires an element of calibration and examples exist of this . The scenarios demonstrated in this paper suggest that the system is quite well calibrated already, but a systematic calibration should be conducted before Tier 3b could be considered a standardized system.…”

Section: Discussionmentioning

confidence: 98%

“…The data provided by Tier 3b can be used to make an informed policy decision rather than a blanket response based on highly conservative scenarios. In the Netherlands, the decision has been made and restrictions may be made according to the presence of a groundwater protection areas, other countries around the world have yet to develop their policy.…”

Section: Discussionmentioning

confidence: 99%

“…To be sure of this requires an element of calibration and examples exist of this. 9 The scenarios demonstrated in this paper suggest that the system is quite well calibrated already, but a systematic calibration should be conducted before Tier 3b could be considered a standardized system. A significant advantage of the Tier 3b approach is that local issues are picked up that can be missed with national level statistics.…”

Section: Tier 3b Pec P80 (In Time and Space) Administrative Zonal Assmentioning

confidence: 91%

“…Or finally, for 100% of the concentrations to be below the regulatory limit. Some countries have invested in defining this; the Netherlands have, for example, indicated that the SPG is that the annual average concentration in groundwater at 10 m beneath an average treated field should not exceed 0.1 μg L −1 in 90% of years . For most countries the debate about SPG is ongoing and the authors intend that this paper will contribute to it.…”

Section: Introductionmentioning

confidence: 99%

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Spatial assessment of pesticide leaching risk to groundwater: sub‐national decision making and model output aggregation

Dowling

Beulke

Garratt

2019

Pest Management Science

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BACKGROUND This study compares standard regulatory methodology (fixed scenarios and models) to spatial modelling at a 1 km landscape resolution for the evaluation of predicted environmental concentrations of pesticides in groundwater. The use of spatial modelling in the decision‐making processes is discussed and three options for the sub‐national evaluation and restriction of substances based on spatial environmental fate modelling are examined. Wheat and sugar beet are tested with two modified FOCUS substances (A and D) in the PEARL and GeoPEARL models. The 80th percentile value in time and space, aggregated to three different sub‐national divisions of interest to a regulator, is used as a regulatory relevant output. RESULTS Means and medians of predicted environmental concentrations at the national level are not useful summary statistics in the age of extensive and freely available geospatial data. A better statistic to use is the P80 (or other desired threshold/percentile combination) in time and space of predicted environmental concentration, combined with flexible and adaptable sub‐divisions of the country based on the desired protective target. CONCLUSION Tier 3b modelling is shown to provide an increase in localism and regulatory nuance over Tier 1 scenarios when combined with soil and aquifer type sub‐national units. © 2019 Society of Chemical Industry

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Section: Discussionmentioning

confidence: 98%

Section: Discussionmentioning

confidence: 99%

Section: Tier 3b Pec P80 (In Time and Space) Administrative Zonal Assmentioning

confidence: 91%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Spatial assessment of pesticide leaching risk to groundwater: sub‐national decision making and model output aggregation

Dowling

Beulke

Garratt

2019

Pest Management Science

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“…GeoPEARL 4.4.4. This implementation and its consequences for the decision tree for the assessment of leaching to groundwater is described in Van den Berg et al (2017).…”

Section: Introductionmentioning

confidence: 99%

User manual for GeoPEARL : version 4.4.4

Berg¹,

Tiktak²,

Kraalingen

et al. 2018

Self Cite

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In the Dutch Decision Tree for for the evaluation of the leaching potential of pesticides, the GeoPEARL model is used to calculate the 90 th spatial percentile of the median leaching concentration in time at a depth of 1.0 m. This user manual describes the use of the graphical user interface of this version. In addition a description of the input and output files is given which helps the user to use the GeoPEARL model without the interface.

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Mechanistic Effect Modeling of Earthworms in the Context of Pesticide Risk Assessment: Synthesis of the FORESEE Workshop

Forbes

Agatz²,

Ashauer

et al. 2020

Integr Envir Assess & Manag

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Earthworms are important ecosystem engineers, and assessment of the risk of plant protection products toward them is part of the European environmental risk assessment (ERA). In the current ERA scheme, exposure and effects are represented simplistically and are not well integrated, resulting in uncertainty when the results are applied to ecosystems. Modeling offers a powerful tool to integrate the effects observed in lower tier laboratory studies with the environmental conditions under which exposure is expected in the field. This paper provides a summary of the (In)Field Organism Risk modEling by coupling Soil Exposure and Effect (FORESEE) Workshop held 28–30 January 2020 in Düsseldorf, Germany. This workshop focused on toxicokinetic–toxicodynamic (TKTD) and population modeling of earthworms in the context of ERA. The goal was to bring together scientists from different stakeholder groups to discuss the current state of soil invertebrate modeling and to explore how earthworm modeling could be applied to risk assessments, in particular how the different model outputs can be used in the tiered ERA approach. In support of these goals, the workshop aimed at addressing the requirements and concerns of the different stakeholder groups to support further model development. The modeling approach included 4 submodules to cover the most relevant processes for earthworm risk assessment: environment, behavior (feeding, vertical movement), TKTD, and population. Four workgroups examined different aspects of the model with relevance for risk assessment, earthworm ecology, uptake routes, and cross‐species extrapolation and model testing. Here, we present the perspectives of each workgroup and highlight how the collaborative effort of participants from multidisciplinary backgrounds helped to establish common ground. In addition, we provide a list of recommendations for how earthworm TKTD modeling could address some of the uncertainties in current risk assessments for plant protection products. Integr Environ Assess Manag 2021;17:352–363. © 2020 SETAC

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An improved soil organic matter map for GeoPEARL_NL : Model description of version 4.4.4 and consequence for the Dutch decision tree on leaching to groundwater

Cited by 18 publications

References 17 publications

Spatial assessment of pesticide leaching risk to groundwater: sub‐national decision making and model output aggregation

Spatial assessment of pesticide leaching risk to groundwater: sub‐national decision making and model output aggregation

User manual for GeoPEARL : version 4.4.4

Mechanistic Effect Modeling of Earthworms in the Context of Pesticide Risk Assessment: Synthesis of the FORESEE Workshop

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