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LINKING NUTRIENTS TO ALTERATIONS IN AQUATIC LIFE IN CALIFORNIA WADEABLE STREAMS
Fetscher, E., M. Sutula, A. Sengupta, AND N. E. DETENBECK. LINKING NUTRIENTS TO ALTERATIONS IN AQUATIC LIFE IN CALIFORNIA WADEABLE STREAMS. U.S. Environmental Protection Agency, Washington, DC (NTIS EPA/600/R-14/043), 2014.
This report estimates the natural background and ambient concentrations of primary producer abundance indicators in California wadeable streams, identifies thresholds of adverse effects of nutrient-stimulated primary producer abundance on benthic macroinvertebrate and algal community structure in CA wadeable streams, and evaluates existing nutrient-algal response models for CA wadeable streams (Tetra Tech 2006), with recommendations for improvements. This information will be included in an assessment of the science forming the basis of recommendations for stream nutrient criteria for the state of California.
The objectives of the project are three-fold: 1. Estimate the natural background and ambient concentrations of nutrients and candidate indicators of primary producer abundance in California wadeable streams; 2. Explore relationships and identify thresholds of adverse effects of nutrient concentrations and primary producer abundance on indicators of aquatic life use in California wadeable streams; and 3. Evaluate the Benthic Biomass Spreadsheet Tool (BBST) for California wadeable streams using existing data sets, and recommend avenues for refinement. The intended outcome of this study is NOT final regulatory endpoints for nutrient and response indicators for California wadeable streams.
URLs/Downloads:RESERVREPORT_06OCT14FINAL.PDF (PDF,NA pp, 29793 KB, about PDF)
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Response to Embedded Comments (PDF,NA pp, 291 KB, about PDF)
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Comments of Reviewer 3 (PDF,NA pp, 337 KB, about PDF)
Comments of Reviewer 2 (PDF,NA pp, 243 KB, about PDF)
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Peer Reviewers (PDF,NA pp, 350 KB, about PDF)
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Record Details:Record Type: DOCUMENT (PUBLISHED REPORT/REPORT)
Organization:U.S. ENVIRONMENTAL PROTECTION AGENCY
OFFICE OF RESEARCH AND DEVELOPMENT
NATIONAL HEALTH AND ENVIRONMENTAL EFFECTS RESEARCH LAB
ATLANTIC ECOLOGY DIVISION
WATERSHED DIAGNOSTICS BRANCH