2023 Early Hearing Detection & Intervention Conference
March 5-7, 2023 • Cincinnati, OH
5/25/2021 | 8:30 AM - 10:30 AM | ESTABLISHING FLOW TARGETS FOR MANAGEMENT: DECISION PROCESS SENSITIVITY, A CHALLENGE FOR IMPLEMENTATION | Virtual Platform
ESTABLISHING FLOW TARGETS FOR MANAGEMENT: DECISION PROCESS SENSITIVITY, A CHALLENGE FOR IMPLEMENTATION
Flow alteration is a pervasive source of habitat alteration that is of management concern worldwide. A key challenge in managing flow alteration is determining the level and pattern of alteration that is associated with impairment of biological communities. Bioassessment tools based on primary producers and consumers have been developed as useful indicators of stream health and for developing flow management targets. However, several decisions must be made to allow these tools to inform flow target development. Specifically, determining an index value threshold, and a threshold of probability that predicts the likelihood of achieving “healthy” biology, influence confidence in usability and implementation of the resulting tool. Using a functional flow approach that relates ecologically important aspects of flow regime to biological community response, we performed a flow-ecology analysis using regional bioassessment data, through which we determined biological alteration and flow targets for a highly urbanized watershed. We applied and compared combinations of alternative thresholds to assess the sensitivity of flow target outcome and uncertainty. We will present the outcomes of this analysis and discuss the implications of the threshold decisions made.
- Urban streams
- Management
- Flow regime
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Presenters/Authors
Katherine Irving
(), Southern California Coastal Water Research Project, katiei@sccwrp.org;
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Kris Taniguchi-Quan
(), Southern California Coastal Water Research Project, kristinetq@sccwrp.org;
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Ryan Peek
(), University of California, Davis, rapeek@ucdavis.edu;
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Eric Stein
(), Southern California Coastal Water Research Project, erics@sccwrp.org;
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