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Ecotoxicological Methodologies to Evaluate Biomarkers at Different Scales in Neotropical Anurans
08:14

Ecotoxicological Methodologies to Evaluate Biomarkers at Different Scales in Neotropical Anurans

Published on: April 28, 2023

Identifying thresholds for ecosystem-based management.

Jameal F Samhouri1, Phillip S Levin, Cameron H Ainsworth

  • 1Pacific States Marine Fisheries Commission, Portland, Oregon, United States of America. Jameal.Samhouri@noaa.gov

Plos One
|February 4, 2010
PubMed
Summary
This summary is machine-generated.

Developing ecosystem-based management (EBM) requires identifying utility thresholds. This quantitative method helps pinpoint pressure levels for significant ecosystem improvements, aiding resource managers in EBM implementation.

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Area of Science:

  • Marine ecology
  • Ecosystem management
  • Quantitative methods

Background:

  • Implementing ecosystem-based management (EBM) is hindered by a lack of systematic criteria for management actions.
  • Defining ecosystem-level reference points remains a significant challenge in EBM practice.

Purpose of the Study:

  • Introduce a quantitative and transferable method for identifying utility thresholds.
  • Assist resource managers and policymakers in developing EBM decision criteria.
  • Provide a framework for protecting ecosystem structure and function.

Main Methods:

  • Detecting nonlinearities in ecosystem attribute-pressure relationships.
  • Illustrating the method with a marine ecosystem model for British Columbia, Canada.
  • Deriving numerical threshold values using indicator species (sablefish and jellyfish) under fishing and habitat pressure.

Main Results:

  • A quantitative method for identifying utility thresholds was developed.
  • Numerical threshold values were derived for specific pressures and indicator groups.
  • The method demonstrated how to incorporate uncertainty into threshold estimation.

Conclusions:

  • Understanding utility thresholds offers insights into management interventions needed for ecosystem improvement.
  • The approach is applicable to single or multiple pressures across various ecosystems (marine, freshwater, terrestrial).
  • This method facilitates more effective ecosystem-based management and decision-making.