DATA COLLECTION METHODS FOR NUTRIENTS IN TEXAS STREAMS. Evaluation of Periphyton Abundance Joint Project In cooperation with the TCEQ Water Quality Standards Program. Project Team. Problem - Development of Nutrient Criteria for S treams. Chlorophyll-a
Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.
Evaluation of Periphyton Abundance
In cooperation with the TCEQ Water Quality Standards Program
Periphyton - attached macro- and micro-algae
To evaluate four field methods for monitoring attached macroalgae and microalgae in wadeable streams
Derived from the USGS National Water-Quality Assessment Program(Moulton II et al., 2002)
Moulton II, Stephen R., Jonathan G. Kennen, Robert M. Goldstein, and Julie A. Hambrook. 2002. Revised Protocols for Sampling Algal, Invertebrate, and Fish Communities as Part of the National Water-Quality Assessment Program. U.S. Geological Survey.
Obtain a composite sample from the richest target habitat (RTH) defined in descending priority:
Scrape designated number of samples for composite based on substrate
Gravel (epilithic habitat)
Cobble (epilithic habitat)
Woody Snag (epidendric habitat)
Measure in the Field -
Subsample Preservation -
Laboratory Analysis -
Derived from the Rapid Bioassessment Protocol developed by USEPA (Barbour et al., 1999)
Barbour, M.T., J. Gerritsen, B.D. Snyder, and J.B. Stribling. 1999. Rapid Bioassessment Protocols for Use in Streams and Wadeable Rivers: Periphyton, Benthic Macroinvertebrates and Fish, Second Edition. EPA 841-B-99-002. U.S. Environmental Protection Agency; Office of Water; Washington, D.C.
Uses a 5 gallon plastic bucket with a transparent bottom that contains a fixed grid of 50 dots
Dots characterized as:
Also measured -
(6 transects with 3 locations each totaling 18 locations per station)
Derived from field protocols developed by Utah State University (Hawkins, et al. 2001)
Hawkins, Charles, Jeff Ostermiller, Mark Vinson, and R. Jan Stevenson. 2001. Stream Algae, Invertebrate, and Environmental Sampling Associated with Biological Water Quality Assessments: Field Protocols. Utah State University.
3 diagonal transects uniformly subdivided into 6 sampling locations (total 18 locations)
At each sampling point, pick up the nearest piece of substrate
Derived from an algae growth study performed by Paul Price Associates, Inc. and Alan Plummer and Associates, Inc.
Paul Price Associates, Inc. and Alan Plummer and Associates, Inc. 1993. Study of Algae Growth in the Upper Brushy Creek Watershed.
Percent coverage of algae estimated from photos
Thickness and length of algae also recorded
To identify which Semi-Quantitative or Qualitative Method was best related to the Quantitative method
Viewing Bucket vs Quantitative Scrape Method
Transect vs Quantitative Scrape Method
Photo/Grid vs Quantitative Scrape Method
Evaluate relation of selected Semi-Quantitative with Qualitative Method with 2 years of data
Evaluate relationships of periphyton abundance to:
Scrape & Transect Methods
(Large amounts of sediment collected & high AFDM)
Scrape & Transect Methods