EARLY HEARING DETECTION AND INTERVENTION VIRTUAL CONFERENCE
MARCH 2-5, 2021
(Virtually the same conference, without elevators, airplane tickets, or hotel room keys)
6/05/2017 | 3:00 PM - 3:15 PM | EXAMINING THE ALGAL COMMUNITY TO UNDERSTAND EUTROPHICATION IN THE HIGHLY TURBID INTERNATIONAL RED RIVER OF THE NORTH | 306B
EXAMINING THE ALGAL COMMUNITY TO UNDERSTAND EUTROPHICATION IN THE HIGHLY TURBID INTERNATIONAL RED RIVER OF THE NORTH
The International Red River Board (IRRB) identified excess nutrients as an important issue in the Red River of the North. The IRRB determined that the best approach to developing nutrient targets for Red River of the North (RRN) would be to understand the biological stressor-responses for nutrients, suspended sediments, and other parameters. A lack of data prompted the development of a plan for collecting periphyton, phytoplankton, and water quality data from 30 sites from the headwater to the mouth of the RRN. Overall, a stressor effect from excess nutrients was documented for both the quantity and quality of the algal community and observed throughout the gradient of the river though turbidity effects were identified. The response of the periphyton community to the nutrient gradient resulted in delineating nutrient targets of 0.15 milligrams per liter (mg/L) for TP and 1.15 mg/L for TN as nutrient criteria for the Red River of the North. Exploration of watershed effects in the stressor-response model indicate anthropogenic disturbances may be more critical than water quality parameters in determining algae variance.
- C01 Algae
- C06 Large River Ecology
- C01 Algae & C24 Eutrophication
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Presenters/Authors
Tony Miller
(), Beaver Creek Hydrology, tony@beavercreekhydrology.com;
ASHA DISCLOSURE:
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Julie Blackburn
(), RESPEC, julie.blackburn@respec.com;
ASHA DISCLOSURE:
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