Abstract Title

Field verification of Cyanobacteria Assessment Network (CyAN) derived satellite estimates of cyanobacteria harmful blooms in Ohio lakes

Presenter Information

Jessica Cicale, USGSFollow

Start Date

23-5-2022 3:15 PM

End Date

23-5-2022 3:30 PM

Abstract

Limited scientific understanding of cyanobacterial harmful algal blooms (cyanoHABs) frequency, spatial extent, and magnitude prevents prediction of toxic cyanobacteria blooms in lakes and reservoirs. The Cyanobacteria Assessment Network (CyAN) is a national, multi-agency project between the Environmental Protection Agency (EPA), National Aeronautics and Space Administration (NASA), National Oceanic and Atmospheric Administration (NOAA), and the U.S. Geological Survey (USGS) to develop a nationwide early warning system using satellite data to detect cyanoHABs in freshwater systems. On the ground verification is necessary to validate satellite algorithms used to detect and quantify cyanobacteria blooms, and to improve the utility of CyAN as an early-warning monitoring system for the occurrence of HABs and algal toxins in freshwater.

At inland lakes in Ohio, the presence of cyanoHABs has been increasing in recent years. During 2020 and 2021, critical in situ water-quality, biological, and environmental data were collected during satellite overflights from Caesar Creek and Buck Creek Lake, Ohio (cyanoHAB-impacted reservoirs) to provide data for the CyAN project. Discrete samples were analyzed for microcystin, cylindrospermopsin, saxitoxin, anatoxin-a, chlorophyll, nutrients, cyanobacterial genes, phytoplankton community composition and abundance. Additionally, site-specific statistical models to predict the probability of exceeding an advisory-level cyanotoxin concentration threshold are being developed as a potential tool for management decisions.

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May 23rd, 3:15 PM May 23rd, 3:30 PM

Field verification of Cyanobacteria Assessment Network (CyAN) derived satellite estimates of cyanobacteria harmful blooms in Ohio lakes

Limited scientific understanding of cyanobacterial harmful algal blooms (cyanoHABs) frequency, spatial extent, and magnitude prevents prediction of toxic cyanobacteria blooms in lakes and reservoirs. The Cyanobacteria Assessment Network (CyAN) is a national, multi-agency project between the Environmental Protection Agency (EPA), National Aeronautics and Space Administration (NASA), National Oceanic and Atmospheric Administration (NOAA), and the U.S. Geological Survey (USGS) to develop a nationwide early warning system using satellite data to detect cyanoHABs in freshwater systems. On the ground verification is necessary to validate satellite algorithms used to detect and quantify cyanobacteria blooms, and to improve the utility of CyAN as an early-warning monitoring system for the occurrence of HABs and algal toxins in freshwater.

At inland lakes in Ohio, the presence of cyanoHABs has been increasing in recent years. During 2020 and 2021, critical in situ water-quality, biological, and environmental data were collected during satellite overflights from Caesar Creek and Buck Creek Lake, Ohio (cyanoHAB-impacted reservoirs) to provide data for the CyAN project. Discrete samples were analyzed for microcystin, cylindrospermopsin, saxitoxin, anatoxin-a, chlorophyll, nutrients, cyanobacterial genes, phytoplankton community composition and abundance. Additionally, site-specific statistical models to predict the probability of exceeding an advisory-level cyanotoxin concentration threshold are being developed as a potential tool for management decisions.