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Evaluation of Toxicity of Algaecide and Released Cyanobacterial Cell Material to Aquatic Organisms Under Rising Surface Water Temperatures - SETAC
Citation:
Goodrich, S., A. Boegehold, N. Dugan, Jim Lazorchak, AND H. Ryu. Evaluation of Toxicity of Algaecide and Released Cyanobacterial Cell Material to Aquatic Organisms Under Rising Surface Water Temperatures - SETAC. SETAC OVC, NA, Virtual, March 04, 2022.
Impact/Purpose:
The information from this presentation will be used by EPA regional personnel, state primacy personnel, and local water managers to make harmful algal bloom management decisions.
Description:
In-vivo toxicity tests with aquatic indicator species, Ceriodaphnia dubia, were performed with both the cyanobacterial extract and algaecide at water temperatures of 25°C and 27°C degrees Celsius to better understand how temperature affects algaecide and cyanobacterial cell toxicity measured by mortality of the test organisms. The LC50 for organisms at 25° Celsius exposed to hydrogen peroxide was 3.63 mg/L. The LC50 for organisms at 25° Celsius exposed to cell lysates was 1056 µg/L. The LC50 for organisms at 27° Celsius exposed to hydrogen peroxide was 2.99 mg/L. The LC50 for organisms at 27° Celsius exposed to cell lysates was above 1700 µg/L.