2023 Early Hearing Detection & Intervention Conference
March 5-7, 2023 • Cincinnati, OH
5/21/2018 | 12:00 PM - 12:15 PM | USING OXYGEN ISOTOPES TO TRACE THE FLOW OF DRP ENTERING THE WESTERN BASIN OF LAKE ERIE | 420 B
USING OXYGEN ISOTOPES TO TRACE THE FLOW OF DRP ENTERING THE WESTERN BASIN OF LAKE ERIE
Algal blooms in the Western Basin of Lake Erie are dependent upon nutrients provided by major rivers within Northwest Ohio. To develop more accurate methods of defining major contributors of DRP, this study uses ?18O of phosphate molecules as a kind of tracer. 10-30L water samples were collected at several locations within the major rivers emptying into the Western Basin of Lake Erie as well as from the Lake itself. Through a series of precipitations, these water samples were transformed with an end product of silver phosphate for ?18O analysis.
Initial results, from water samples collected during low flow conditions, suggest that equilibration due to biological processing within the water column may be producing deviation from expected ?18O patterns. However, more recent samples collected at high flow will depict a more accurate representation of the use of ?18O to determine paths of DRP flow into the Western Basin. Finally, these ?18O values will be compared to those of possible sources of DRP to further knowledge on the origins of nutrients contributing to the eutrophication of Lake Erie.
- Area of Concern
- Great Lakes
- New Methods
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Presenters/Authors
Melanie Marshall
(), Bowling Green State University, melaniemarshall14@gmail.com;
ASHA DISCLOSURE:
Financial -
Nonfinancial -
Kevin McCluney
(), Bowling Green State University, kmcclun@bgsu.edu;
ASHA DISCLOSURE:
Financial -
Nonfinancial -