2023 Early Hearing Detection & Intervention Conference
March 5-7, 2023 • Cincinnati, OH
6/05/2017 | 10:15 AM - 10:30 AM | USING MEASURES OF BETA DIVERSITY TO BETTER INFORM BIOASSESSMENTS AND CLEAN WATER ACT MANAGEMENT | 305A
USING MEASURES OF BETA DIVERSITY TO BETTER INFORM BIOASSESSMENTS AND CLEAN WATER ACT MANAGEMENT
For Clean Water Act regulatory purposes State environmental agencies group similar stream reaches into single management units, called assessment units (AUs). In many cases, AUs are delineated using features that are easy to map but may not be ecologically meaningful, such as road crossings, political boundaries, etc. For biologic monitoring and assessment, measures of compositional similarity may be more meaningful for delineating AUs. We collected spatially dense macroinvertebrate samples (~10m -1km) at 12-15 locations longitudinally along multiple streams. We compared Beta-diversity using Sorensen dissimilarity among flow connected sampling sites to determine if there was a significant relationship among dissimilarity and distance. We hypothesized, at this scale, distance-dissimilarity relationships would be nonlinear and significant thresholds could be developed to determine a distance at which sites should be lumped or split into ecologically meaningful AUs. We also compared thresholds and rate of change among streams to determine if environmental quality or landscape-level attributes structured distance-dissimilarity relationships. If distance-dissimilarity thresholds can be applied across watersheds, then this information can be used to efficiently design State biologic monitoring and assessment programs.
- C17 Bioassessment
- C36 Water Resource Management
- S21 Practical applications of metacommunity theory in stream and river management
Presentation:
This presentation has not yet been uploaded.
Handouts:
Handout is not Available
Transcripts:
CART transcripts are NOT YET available, but will be posted shortly after the conference
Presenters/Authors
Michael Shupryt
(), WI Department of Natural Resources, Michael.Shupryt@wisconsin.gov;
ASHA DISCLOSURE:
Financial -
Nonfinancial -
James Amrhein
(), WI Department of Natural Resources, james.amrhein@wisconsin.gov;
ASHA DISCLOSURE:
Financial -
Nonfinancial -
Micahel Sorge
(), WI Department of Natural Resources, Michael.Sorge@wisconsin.gov;
ASHA DISCLOSURE:
Financial -
Nonfinancial -
Jean Unmuth
(), WI Department of Natural Resources, Jean.unmuth@wisconsin.gov;
ASHA DISCLOSURE:
Financial -
Nonfinancial -