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A spatiotemporally explicit modeling approach for more realistic exposure and risk assessment of off‐field soil organisms
Integrated environmental assessment and management, 2024-01, Vol.20 (1), p.263-278
Schad, Thorsten
Bub, Sascha
Wang, Magnus
Holmes, Christopher M.
Kleinmann, Joachim
Hammel, Klaus
Ernst, Gregor
Preuss, Thomas G.
2024
Volltextzugriff (PDF)
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Autor(en) / Beteiligte
Schad, Thorsten
Bub, Sascha
Wang, Magnus
Holmes, Christopher M.
Kleinmann, Joachim
Hammel, Klaus
Ernst, Gregor
Preuss, Thomas G.
Titel
A spatiotemporally explicit modeling approach for more realistic exposure and risk assessment of off‐field soil organisms
Ist Teil von
Integrated environmental assessment and management, 2024-01, Vol.20 (1), p.263-278
Ort / Verlag
United States: Blackwell Publishing Ltd
Erscheinungsjahr
2024
Quelle
MEDLINE
Beschreibungen/Notizen
Natural and seminatural habitats of soil living organisms in cultivated landscapes can be subject to unintended exposure by active substances of plant protection products (PPPs) used in adjacent fields. Spray‐drift deposition and runoff are considered major exposure routes into such off‐field areas. In this work, we develop a model (xOffFieldSoil) and associated scenarios to estimate exposure of off‐field soil habitats. The modular model approach consists of components, each addressing a specific aspect of exposure processes, for example, PPP use, drift deposition, runoff generation and filtering, estimation of soil concentrations. The approach is spatiotemporally explicit and operates at scales ranging from local edge‐of‐field to large landscapes. The outcome can be aggregated and presented to the risk assessor in a way that addresses the dimensions and scales defined in specific protection goals (SPGs). The approach can be used to assess the effect of mitigation options, for example, field margins, in‐field buffers, or drift‐reducing technology. The presented provisional scenarios start with a schematic edge‐of‐field situation and extend to real‐world landscapes of up to 5 km × 5 km. A case study was conducted for two active substances of different environmental fate characteristics. Results are presented as a collection of percentiles over time and space, as contour plots, and as maps. The results show that exposure patterns of off‐field soil organisms are of a complex nature due to spatial and temporal variabilities combined with landscape structure and event‐based processes. Our concepts and analysis demonstrate that more realistic exposure data can be meaningfully consolidated to serve in standard‐tier risk assessments. The real‐world landscape‐scale scenarios indicate risk hot‐spots that support the identification of efficient risk mitigation. As a next step, the spatiotemporally explicit exposure data can be directly coupled to ecological effect models (e.g., for earthworms or collembola) to conduct risk assessments at biological entity levels as required by SPGs. Integr Environ Assess Manag 2024;20:263–278. © 2023 Applied Analysis Solutions LLC and WSC Scientific GmbH and Bayer AG and The Authors. Integrated Environmental Assessment and Management published by Wiley Periodicals LLC on behalf of Society of Environmental Toxicology & Chemistry (SETAC) Key Points We developed an open‐source spatiotemporally explicit modular landscape model (xOffFieldSoil) and associated scenarios to estimate exposure of off‐field soil habitats from pesticide spray‐drift deposition and runoff. Model outcomes can be aggregated as a collection of percentiles over time and space, as contour plots, and as maps that can be presented to the risk assessor in a way that addresses the dimensions and scales defined in specific protection goals. The results show that exposure patterns of off‐field soil organisms are of a complex nature due to spatial and temporal variabilities combined with landscape structure and event‐based processes. We demonstrate that more realistic exposure data can be meaningfully consolidated to serve in standard‐tier risk assessments and that real‐world landscape‐scale scenarios indicate risk hot‐spots that support the identification of efficient risk mitigation.
Sprache
Englisch
Identifikatoren
ISSN: 1551-3777
eISSN: 1551-3793
DOI: 10.1002/ieam.4798
Titel-ID: cdi_proquest_miscellaneous_2828364313
Format
–
Schlagworte
Assessment endpoints
,
Buffers (chemistry)
,
Deposition
,
Drift
,
Ecological effects
,
Ecosystem
,
Ecotoxicology
,
Environmental assessment
,
Environmental Impact Assessment
,
Environmental management
,
Exposure
,
Habitats
,
Integrated environmental assessment
,
Landscape‐scale
,
Mitigation
,
Models, Theoretical
,
Off‐field soil risk
,
Organisms
,
Pesticide exposure
,
Plant protection
,
Risk Assessment
,
Risk reduction
,
Runoff
,
Soil
,
Soils
,
Specific protection goals
,
Toxicology
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