All Downloads from the category: “Technical”
Bauer et al. (2023) A Toxicokinetic–Toxicodynamic Modeling Workflow Assessing the Quality of Input Mortality Data
Toxicokinetic–toxicodynamic (TKTD) models simulate organismal uptake and elimination of a substance (TK) and its effects on the organism (TD). The Reduced General Unified Threshold model of Survival (GUTS‐RED) is a TKTD modeling framework that is well established for aquatic risk assessment to simulate effects on survival.
PDF
1 MB
Faupel et al. (2023) Precision farming and environmental pesticide regulation in the EU—How does it fit together?
Precision farming technology allows pesticides to be applied precisely to the target while leaving the rest of the field untreated. In the regulation of pesticides, however, a homogeneously sprayed field is considered as the standard scenario.
PDF
113 KB
Wittwer, Jakoby (2023) Evaluation of wind speed measurements published by th German Meteorological Service (DWD) for the years 2004 to 2020
Sowing of seeds treated with agrochemicals is common practice in agriculture. German regulatory authorities are requesting that seeds treated with plant protection products must not be sown at average hourly wind speeds exceeding 5 m/s (at 2 m above ground) unless the environmental risk assessment indicates a large margin of safety.
PDF
1 MB
Singer, Nickisch, Gergs (2022) Joint survival modelling for multiple species exposed to toxicants
In environmental risk assessment (ERA), the multitude of compounds and taxa demands cross-species extrapolation to cover the variability in sensitivity to toxicants. However, only the impact of a single compound to a single species is addressed by the general unified threshold model of survival (GUTS).
PDF
2 MB
Sur, Herrmann (2022) Determination of transfer factors for solute concentrations from agricultural fields to drinking water abstraction points
The stepwise attenuation of solute concentrations has been determined, starting from the unsaturated zone underneath treated fields across the deeper aquifer, down to drinking water abstraction wells. The partial or overall transfer or attenuation factor may help to make informed decisions on the magnitude of the decrease in concentrations from shallow leachate to drinking water abstraction, which is largely caused by mixing.
PDF
643 KB
Faupel et al. (2022) Precision farming and environmental pesticide regulation in the EU—How does it fit together?
Precision farming technology allows pesticides to be applied precisely to the target while leaving the rest of the field untreated. In the regulation of pesticides, however, a homogeneously sprayed field is considered as the standard scenario.
PDF
113 KB
Herrmann, Sur (2021) Natural attenuation along subsurface flow paths based on modeling and monitoring of a pesticide metabolite from three case studies
Groundwater—especially for the use as drinking water—is a strictly protected resource in the existing guidelines for pesticide registration and drinking water protection in the EU.
PDF
10 MB
Klopper et al. (2020) How to reduce computation effort for GUTS modelling while retaining output reliability for risk assessment use?
The practicability of approaches can influence their usability in environmental risk assessment (ERA). The anticipated 20- year data in aquatic RA would considerably amplify computational effort and therefore pose a challenge for General Unified Threshold Model of Survival (GUTS) applications in ERA.
PDF
667 KB
Lückmann et al. (2020) Precision pesticide application as a tool to reduced exposure of crop visiting pollinators?
Recent publications on severe declines of insects moved the topic of biodiversity in agricultural landscapes into the focus of public attention. Consequently, European policy is under increasing public pressure to minimize the amount of synthetic pesticides applied and to reform the criteria for their authorization and use.
PDF
1 MB
Ludwigs et al. (2019) Response to David R. Crocker and Steven D. Langton “When Is It Legitimate to Downplay Individual Differences?”
In their letter, Crocker and Langton (2019) critically discuss the approach of 21‐dMonte Carlo PT (portion of diet from a pesticidetreated area) simulations proposed in Ludwigs et al. (2017). The aim of this method is to assess realistic 21‐d PT values by including daily variability in habitat use for individual animals.
PDF
47 KB
Faupel et al. (2019) Functional endpoints as perspective for the definition of protection goals in regulatory ecotoxicology
The development of guidance documents by EFSA for regulatory ecotoxicology under regulation ( 1107 2009 is lacking by the definition of specific protection goals
PDF
1 MB
Jakoby et al. (2019) Designing and conducting mesofauna field studies What should study design consider in terms of sample storage, extraction and detectable differences?
Mesofauna field studies can be conducted as higher tier refinement option. Such studies investigate effects on species composition and abundance at community/population level under realistic exposure conditions
PDF
1 MB