2023 Early Hearing Detection & Intervention Conference
March 5-7, 2023 • Cincinnati, OH
6/05/2017 | 2:00 PM - 2:15 PM | CORRELATIONS OF THE COMPOSITION OF ALGAE ASSEMBLAGES TO THE TROPHIC STATE OF MIDDLE TENNESSEE STREAMS | 306B
CORRELATIONS OF THE COMPOSITION OF ALGAE ASSEMBLAGES TO THE TROPHIC STATE OF MIDDLE TENNESSEE STREAMS
The ecological understanding of algae communities and their compositional response to eutrophication is limited. Therefore, the use of algae for bioassessment is less common relative to fish and macroinvertebrates. In this study, the effects of eutrophication on algae assemblages was analyzed. Eight streams in eight watersheds in Tennessee were sampled to describe the composition of algal assemblages. There were two primary goals of this study: 1) to document the diversity of algae taxa found in Tennessee streams, and 2) to correlate the composition of both, diatom and soft- algae assemblages to the trophic state. We identified 232 soft-algae and diatom taxa. A student’s t-test determined significant seasonal variation in diatom and soft-algae composition between May and August. The algae trophic index (ATI) indicator values for soft-algae taxa were derived from the abundance-weighted average of chlorophyll-a (A-WAchl-a) and the abundance- weighted average of pollution tolerance index (A-WAPTI). The results demonstrate that the composition of algae assemblages, represented in terms of abundance-weighted averages, is an accurate indicator of trophic state.
- C24 Eutrophication
- C17 Bioassessment
- C01 Algae & C24 Eutrophication
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Presenters/Authors
Molly Grimmett
(), Austin Peay State University, mgrimmett1@my.apsu.edu;
ASHA DISCLOSURE:
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Nonfinancial -