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  3. Implementing Normal Operating Range Concepts For Pesticide Environmental Risk Assessments: Insights, Challenges, And Future Directions.
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  3. Implementing Normal Operating Range Concepts For Pesticide Environmental Risk Assessments: Insights, Challenges, And Future Directions.

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Implementing Normal Operating Range Concepts for Pesticide Environmental Risk Assessments: Insights, Challenges, and

Lara Ibrahim1, Oliver Jakoby1, Peter Vermeiren1

  • 1RIFCON GmbH, Hirschberg, Germany.

Integrated Environmental Assessment and Management
|May 5, 2026

View abstract on PubMed

Summary
This summary is machine-generated.

The Normal Operating Range (NOR) provides ecological context for pesticide risk assessments by accounting for natural biological variability. Implementing NORs requires collaboration to standardize methods and integrate data for better environmental protection goals.

Keywords:
background variabilityecological modellingecological risk assessmentexpert workshopspecific protection goals

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Area of Science:

  • Ecology
  • Environmental Science
  • Toxicology

Background:

  • The Normal Operating Range (NOR) describes natural variability in organisms and ecosystems.
  • NOR concepts are emerging in pesticide environmental risk assessment (ERA) to add ecological context.
  • This approach can support specific environmental protection goals.

Purpose of the Study:

  • To explore the derivation and application of NOR concepts in pesticide ERA.
  • To identify benefits and challenges of integrating NOR into regulatory frameworks.
  • To enhance ecological context in effect assessments.

Main Methods:

  • Expert workshop discussions on NOR derivation and applicability.
  • Review of current efforts and challenges in pesticide ERA.
  • Consideration of ecological modeling for variability analysis.

    • Main Results:

    • NOR approaches can enhance decision-making in pesticide ERA.
    • Key challenges include defining effect thresholds and ensuring consistency.
    • Data limitations and the need for standardized methodologies were highlighted.

    Conclusions:

    • Successful NOR implementation requires stakeholder collaboration for data and methods.
    • Integrating natural variability into decision-making is crucial.
    • A harmonized approach using empirical data and transparent methodologies is essential for pesticide ERA.