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Anatoxin-a (ATX) is a neurotoxic cyanotoxin found in freshwater globally. Multiple genera of cyanobacteria can produce anatoxins and include producers associated with planktonic blooms such as Aphanizomenon, Dolichospermum, and Planktothrix and those most associated with benthic ...

Harmful algal blooms are occur frequently in fresh and marine waters. Anatoxin-a (ATX) is a neurotoxin produced by cyanobacteria mainly in freshwater. Human health guidelines are limited by a scarcity of toxicological data although it has caused illness in humans, and illness and...

Harmful Algal Blooms (HABs) are a hazard for coastal environments worldwide; identifying screening thresholds of chlorophyll-a (chl-a) associated with increased risk of HABs is a management priority. Molecular surveillance of coastal phytoplankton and bivalve biotoxins ...

Human-driven environmental change has caused harmful algal blooms (HABs) to increase in aquatic ecosystems worldwide, yet our understanding of their impacts on food webs and the fisheries that they support remains incomplete. This information gap is especially conspicuous in Lake...

Background: Cyanobacterial harmful algal blooms (cyanoHABs) pose risks to human and animal health. Methods: We investigated the relationship between cyanoHABs and asthma or wheeze-related emergency department (ED) visits near three Wisconsin cities (Green Bay, Madison, ...

Cyanobacteria have recently been detected in coastal systems in the U.S., with cyanotoxins measured in shellfish in downstream estuaries at levels of concern for human health. Goal 4 of EPA’s draft Harmful Algal Blooms (HABs) Strategy highlights EPA’s critical role in the Advanc...

The Cyanobacteria Assessment Network (CyAN) is a multi-agency, satellite-enabled program that delivers daily, national-scale monitoring, summary metrics, and forecasting of cyanobacterial harmful algal blooms (cyanoHABs) for thousands of U.S. lakes using 300 m Sentinel-3 OLCI obs...

Interest in using DNA metabarcoding as part of monitoring and assessment programs continues to increase since 2020 when EPA first published a study on its use to quantify diatom responses to nutrients in streams at a watershed scale. Results from this initial work were subsequent...

The Cyanobacteria Assessment Network (CyAN) is a multi-agency, satellite-enabled program that delivers daily, national-scale monitoring, summary metrics, and forecasting of cyanobacterial harmful algal blooms (cyanoHABs) for thousands of U.S. lakes using 300 m Sentinel-3 OLCI obs...

In 2024/2025 spatially balanced probability surveys for benthic HABs were conducted in five different systems. Here we use the preliminary results of the survey of the Hanford and Richland Sections of the Columbia River near the Tri-Cities, WA to provide context and an update to ...

In 2024 a spatially balanced probability survey for benthic HABs was conducted in the Hanford and Richland Sections of the Columbia River near the Tri-Cities, WA. Thirty nine sites were visited late September and mid October. Surface water grab samples were taken at each. A trans...

Spring 2025 Puget Sound Liquid chromatography mass spectrometry (LCMS) algal toxin concentration results from aqueous and solid phase adsorption toxin tracking (SPATT) samples 

This Dataset includes the spatial and temporal measurements of water quality probe parameters taken in the field within the canal and river system of St. Mary's, OH for the years 2023-2025.

HABS-BLOCKS© infused with glucose have been shown to reduce cyanobacterial populations and microcystin (MC) concentrations in laboratory mesocosm studies. An in situ limno-corral (LC) mesocosm study of HABS-BLOCKS© was conducted for two weeks during the 2025 algal bloom...

In Lake Erie, harmful algal blooms have become a recurrent problem during the summer-through-fall growing season. We investigated if the annual disturbance of harmful algal blooms in Lake Erie relates to distinct differences in carbon and nitrogen stable isotope composition (&del...

Compared to the contiguous United States (CONUS), little is currently known about the potential vulnerability of public water systems (PWS) in the State of Alaska to freshwater harmful algal blooms (HABs). A Regional-Office of Research and Development (ORD) Applied Research (ROAR...

Quantitative Polymerase Chain Reaction (qPCR) is a well-established method for molecular detection and quantification of microorganisms. Molecular detection of toxigenic cyanobacteria using qPCR has also been employed as a useful tool for predicting cyanotoxin production and form...

Area burned by wildfire has increased in the contiguous United States and in many places globally in recent years, impacting communities and ecosystems nearby and even far downwind of fires. We examined the potential effects of smoke on surface chlorophyll-a concentrations in lak...

Cyanobacterial harmful algal blooms are widespread, dynamic, and consequential. Traditional field-based monitoring alone cannot provide the spatial and temporal coverage along, and this work examines how integrating satellite observations with in situ sampling and models enables ...

Publicly available cyanobacterial harmful algal blooms (cyanoHAB) forecasts are now available at www.epa.gov/habs/hab-forecasts, offering water quality and public health managers a tool for anticipating cyanoHAB conditions in the largest United States lakes and reservoirs. T...

An update to the Ohio River Valley Water Sanitation Commission's Technical Committee on Ohio River HABs research and monitoring that occurred over 2025 will be provided. Progress for the year includes refinement of the 14 day ahead HABs occurrence forecast, revision of scripts us...

This subproduct is a gene count dataset generated by gene expression of mouse liver and brain tissue after exposure to 5 days of the freshwater cyanotoxin anatoxin-a. Male and female CD-1 mice were dosed with either vehicle (water), 2, 4, or 6 mg/kg (+)-anatoxin-a extracted and p...

Lake Erie has been re-experiencing excessive nutrient loading (i.e., eutrophication) during recent decades, the causes and consequences of which remain incomplete (Scavia et al., 2014; Sinclair et al., 2023; Watson et al., 2016). Our general understanding is that increased runoff...

Satellite constellations often launch platforms over several years, increasing observational frequency and capturing additional, potentially more extreme, events. Consequently, reported changes in satellite-derived data may inadvertently capture variations in observational freque...

Harmful cyanobacterial blooms (HCBs) are a public health concern and require ongoing surveillance to monitor the negative water quality effects and cyanotoxins associated with these blooms. (+)-Anatoxin-a (ATX) is a potent neurotoxin produced by select cyanobacteria during HCB fo...