Science Inventory

Search Criteria:

Records with

  • Keyword = harmful algal blooms OR HABs.
  (Sorted by Revision Date)
Records 1 to 25 of 221

Research Update: Nutrient Management and Control (PRESENTATION)
Presentation to be given at the 2018 Nutrients Permitting Workshop, Columbus, OH. Presentation Outline: U.S. EPA, ORD Overview Research Plans – Safe and Sustainable Water Examples: Green Infrastructure Performance Monitoring LCA of Nutrient Control Technologies Nutrient Con...
Harmful Algal Bloom Response (PRESENTATION)
A presentation to be given at the 2018 APHL Annual Meeting and Twelfth Government Environmental Laboratory Conference. Harmful algal blooms or HABs are overgrowth of cyanobacteria in water bodies. These bacteria produce several harmful toxins (called cyanotoxins) that have detri...
Conventional Treatment Options for HABs Impacted Waters, Atlanta (PRESENTATION)
This presentation presents data describing: (1) the removals of cyanobacterial cells through coagulation, flocculation, sedimentation and filtration, at the pilot- and full-scale; (2) the impact of powdered activated carbon on the removal of cyanobacterial toxins; (3) the impact ...
The time scale of resilience-based forecasts and their potential use (PRESENTATION)
It is notoriously difficult to predict abrupt changes involving critical transitions (a type of regime shift), and these changes include management-relevant events like fisheries, collapses, and harmful algal blooms. However, recent theoretical and experimental work suggests that...
Cyanobacteria Assessment Network (CyAN) (NASA Applied Sciences Water Resources Team Meeting) (PRESENTATION)
Specific goals: • Create a systematic method to detect cyanobacteria blooms using satellite data • Develop an information dissemination system for expedient public health advisory postings • Understand the connections between health, economic, and environmental ...
Cyanobacteria Assessment Network - Mobile device application for monitoring cyanobacteria harmful algal blooms using Sentinel-3 satellite Ocean and Land Colour Instruments (PRESENTATION)
The Cyanobacteria Assessment Network (CyAN) is a multi-agency (NASA, USGS, NOAA, and EPA) project and its mission supports the environmental management and public use of U.S. lakes and reservoirs by providing a capability of detecting and quantifying algal blooms using satellite ...
Using Multi-media Modeling to Investigate Conditions Leading to Harmful Algal Blooms (ITM 2018) (PRESENTATION)
Clean water for drinking and sanitary purposes is a precondition for human health and well-being and essential for ecosystem health and survival (WMO, 2013). Water quality is influenced by both non-point pollution from farming activities and point-source pollution from sewage tre...
IOCCG Report: Earth Observations in Support of Global Water Quality Monitoring (PUBLISHED REPORT)
The information throughout this report is provided for water quality managers and various stakeholders interested in monitoring and assessing coastal and inland waters with satellite remote sensing. Water quality managers are identified as anyone who is responsible for protecting...
The Cyanobacteria Monitoring Collaborative: Multi-Tiered Approach to Citizen Science Based Cyanobacteria Monitoring (PRESENTATION)
Cyanobacteria (sometimes referred to as blue-green algae) are tiny organisms that can be found in diverse environments ranging from deserts to oceans. Under the right conditions cyanobacteria can spread quickly, forming dense “blooms” on a waterbody’s surface. ...
Conventional Treatment Options for HABs Impacted Waters, Cincinnati (PRESENTATION)
The presentation contains results of bench-scale trials conducted in EPA laboratories, as well as the results of field visits by EPA personnel to drinking water treatment facilities. The presentation will focus on drinking water treatment options for waters impacted by harmful a...
Cyanobacterial community structure changes with seasonal mixing and dissolved oxygen dynamics in three urban eutrophic lakes. (PRESENTATION)
Nutrients contribute to the development of toxic cyanobacterial blooms yet information about other drivers is needed to better predict when and where blooms will occur. We monitored cyanobacterial community dynamics in three Gulf Coast urban lakes. The SW and SE lakes were both...
Eutrophication Model Development for Life Cycle Impact Assessment in the United States (ICOSSE '18 presentation) (PRESENTATION)
Eutrophication describes the buildup of excess nutrients, such as nitrogen and phosphorus, in a body of water. This buildup can lead to excess plant growth, such as harmful algal blooms (HABs), resulting in deficiency of dissolved oxygen (hypoxia), and in some cases the productio...
Overview of HABs Research Program (PRESENTATION)
This presentation is an overview of the cyanobacteria/harmful algal blooms research currently being performed within the Office of Research and Development's Safe and Sustainable Water Resources research program. The presentation highlights results in the following areas: lake m...
Lake Harsha: Three Years of HABs Monitoring (PRESENTATION)
USEPA’s Office of Research and Development has partnered with the Clermont County, OH Water Resources Department in an on-going study to assess HAB trends and develop monitoring tools and approaches. Lake Harsha, a multi-use reservoir and primary drinking water source in southwes...
Measuring Total Microcystins in Fish Tissue using the 2-methyl-3-methoxy-4-phenylbutyric acid (MMPB) procedure - Minneapolis (PRESENTATION)
There are limited methods for the analyses of multiple algal toxins in aquatic food webs, phytoplankton, zooplankton, periphyton, macroinvertebrates, forage fish, bottom feeders and top carnivore fish. Algal toxins in freshwater systems do not necessarily occur as single contamin...
US Environmental Protection Agency Efforts to address Harmful Algal Blooms (HABs) Impacting Drinking and Recreational Waters (NEWSLETTER ARTICLE)
This is a short article for a European cyanobacteria newsletter that discusses EPA efforts in the following areas: toxin monitoring in public water systems, toxin guidance values in drinking and recreational waters, and research in the areas of treatment, monitoring, methods deve...
pH dependent octanol–water partitioning coefficients of microcystin congeners (JOURNAL)
Hazardous algal blooms can generate toxic compounds with significant health impacts for exposed communities. The ubiquitous class of algal toxins known as microcystins exhibits significant heterogeneity in its peptide structure, which has been minimally studied, given the signifi...
Using Rapid Small Scale Column Testing to Evaluate Granular Activated Carbon Adsorption of Cyanotoxins from Drinking Water (PAPER IN NON-EPA PROCEEDINGS)
Increases in cyanotoxin containing harmful algal blooms in recent years has raised the level of concern within the water treatment industry to remove these dangerous bacteria and chemicals. Typical methods used to treat intracellular and extracellular cyanotoxins include pretreat...
Who messed up my lake? (PRESENTATION)
Initial results from a lake-wide agent based simulation releasing virtual drifters from multiple tributaries over time. We examine the use of agent based modeling to break down the sources contributing to the composition of nearshore waters. Knowing that flow is highly biased in ...
Evaluating Lake Superior nearshore offshore gradients using autonomous gliders (PRESENTATION)
Slocum electric gliders are autonomous vehicles capable of continuously mapping subsurface conditions at high resolution for months at a time. During the 2016 CSMI in Lake Superior, seven glider deployments were undertaken through a partnership between University of Minnesota Dul...
An approach to monitoring cyanobacteria blooms at surface drinking water intakes using satellite imagery (10th National Monitoring Conference) (PRESENTATION)
Cyanobacterial blooms occur worldwide and are associated with human respiratory irritation, undesirable taste and odor of potable water, increased drinking water treatment costs, loss of revenue from recreational use, and human illness as a result of ingestion or skin exposure du...
Satellite-based monitoring of cyanobacteria blooms from 2002–2011 for 11 reservoirs with watersheds along an agricultural gradient (PRESENTATION)
Imagery acquired by the Envisat Medium Resolution Imaging Spectrometer from 2002-2011 was used to estimate cyanobacteria cell densities for 11 reservoirs in Indiana, Ohio, and Kentucky, USA (surface areas 8–43 km2; 864 total images spanning May–September). This initia...
Using Satellite Data to Monitor the Impacts of CyanoHAB Events on Drinking Water: A Texas Case Study (PRESENTATION)
Overview of CYAN and it's mission to support the environmental management and public use of U.S. lakes and estuaries by providing a capability of detecting and quantifying algal blooms and related water quality using satellite data records.
Applications of agent-based modeling to nutrient movement Lake Michigan (PRESENTATION)
As part of an ongoing project aiming to provide useful information for nearshore management (harmful algal blooms, nutrient loading), we explore the value of agent-based models in Lake Michigan. Agent-based models follow many individual “agents” moving through a simul...
Spatial and Temporal Dynamics of Cyanobacterial Blooms in Two Rhode Island Ponds. (PRESENTATION)
Cyanobacteria are natural components of freshwater ecosystems. When conditions are favorable (e.g., high nutrient inputs), cyanobacteria can form dense blooms that have negative effects on human and animal health, ecosystem functioning, and aesthetics. When blooms occur they can ...