2023 Early Hearing Detection & Intervention Conference
March 5-7, 2023 • Cincinnati, OH
5/22/2018 | 10:15 AM - 10:30 AM | APPLYING OREGON’S SEDIMENT-SPECIFIC STRESSOR INDEX: SCIENTIFIC AND POLICY CHALLENGES | 330 A
APPLYING OREGON’S SEDIMENT-SPECIFIC STRESSOR INDEX: SCIENTIFIC AND POLICY CHALLENGES
Identifying causes of biological impairment remains a substantial challenge to water quality management programs. To address this need, we developed a stressor-specific index utilizing macroinvertebrate assemblages to identify excess fine sediments in Oregon (USA) streams. We faced various technical challenges including: How to define “fine” sediment? How to set thresholds for an index built without reference populations? How to link the sediment-specific index to an index of biological integrity? While the scientific challenges were difficult, the challenges associated with implementing the index into a policy framework has proven even more so. This was especially true given the lack of numeric water quality standards for both biocriteria and the stressor.
- Bioindicators
- Sediment
- Diagnostic Indices
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Presenters/Authors
Shannon Hubler
(), Oregon Department of Environmental Quality, hubler.shannon@deq.state.or.us;
ASHA DISCLOSURE:
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