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Weight-of-Evidence Approaches for Assessing Ecosystem Impairment

Weight-of-Evidence Approaches for Assessing Ecosystem Impairment It is challenging determining whether an ecosystem is impaired. The complexity of direct and indirect interactions between physical, biological and chemical components with their varying temporal and spatial scales generally renders use of multiple assessment approaches mandatory, with a consequent need to integrate different lines-of-evidence. Integration generally involves some form of weight-ofevidence (WOE). WOE approaches reported in the literature vary broadly from subjective and qualitative to quantitative. No standard approach exists and no accepted guidelines exist describing how a WOE process should be conducted. This review summarizes the advantages, limitations, and uncertainties of different WOE approaches, critical issues involved in selecting and executing different lines-ofevidence, and the process for subsequent characterization of the likelihood of impairment. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Human & Ecological Risk Assessment Taylor & Francis

Weight-of-Evidence Approaches for Assessing Ecosystem Impairment

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References (61)

Publisher
Taylor & Francis
Copyright
Copyright Taylor & Francis Group, LLC
ISSN
1549-7860
eISSN
1080-7039
DOI
10.1080/20028091057547
Publisher site
See Article on Publisher Site

Abstract

It is challenging determining whether an ecosystem is impaired. The complexity of direct and indirect interactions between physical, biological and chemical components with their varying temporal and spatial scales generally renders use of multiple assessment approaches mandatory, with a consequent need to integrate different lines-of-evidence. Integration generally involves some form of weight-ofevidence (WOE). WOE approaches reported in the literature vary broadly from subjective and qualitative to quantitative. No standard approach exists and no accepted guidelines exist describing how a WOE process should be conducted. This review summarizes the advantages, limitations, and uncertainties of different WOE approaches, critical issues involved in selecting and executing different lines-ofevidence, and the process for subsequent characterization of the likelihood of impairment.

Journal

Human & Ecological Risk Assessment – Taylor & Francis

Published: Oct 1, 2002

Keywords: weight-of-evidence; hazard assessment; risk assessment; best professional judgment; uncertainty.

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