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  • Keyword = harmful algal blooms OR HABs.
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Records 1 to 25 of 446

Technical Memorandum: Review of MWRA Water Quality Monitoring Results to Address Potential for Harmful Effects of the Deer Island Discharge on Threatened and Endangered Species in Massachusetts Bay
(PUBLISHED REPORT) [Published : Aug 04, 2022]
To assist US EPA Region 1 in addressing questions and concerns related to reissuance of the administratively continued NPDES discharge permit for MWRA’s Deer Island water treatment facility, EPA Region 1 requested that a review team from EPA’s Office of Research and Development e...
Technical Memorandum: Recommendations to adapt Ambient Monitoring and Contingency Thresholds to monitor potential ecological risks to Massachusetts Bay resulting from the Deer Island Discharge
(PUBLISHED REPORT) [Published : Aug 04, 2022]
To assist US EPA Region 1 in addressing questions and concerns related to reissuance of the administratively continued NPDES discharge permit for MWRA’s Deer Island water treatment facility, EPA Region 1 requested that a review team from EPA’s Office of Research and Development e...
East Fork Watershed Study: Overview
(PRESENTATION) [Presented : Apr 06, 2022]
U.S. EPA’s, Office of Research and Development’s (ORD’s) East Fork Watershed Study (EFWS) centers attention on the integration of water quality modeling and monitoring, excess nutrient management, and the partnership needed to effectively implement nutrient redu...
Nutrient uptake stoichiometry of harmful algal blooms on Lake Erie: Exploring the data
(PRESENTATION) [Presented : May 20, 2022]
Excess nutrients have long been linked to algal blooms, and significant effort has been made to reduce commonly limiting nutrients, i.e. phosphorus.  Despite significant reductions in Phosphorus loading in the Lake Erie watershed, ~40% reduction, harmful algal blooms (HABs) ...
Village Blue Public Outreach of Water Quality Sensor Data Using Reactive Artwork
(PRESENTATION) [Presented : May 26, 2022]
Water sensors output data as electronic signals in a variety of formats.  Even when these data are converted to numeric form, tables, or graphs, they can be difficult for communities to understand.  To make the sensor information more accessible, sensor signals have bee...
Satellites quantify the spatial extent of cyanobacterial blooms across the United States at multiple scales
(JOURNAL) [Published : Jul 01, 2022]
Previous studies indicate that cyanobacterial harmful algal bloom (cyanoHAB) frequency, extent, and magnitude have increased globally over the past few decades. However, little quantitative capability is available to assess these metrics of cyanoHABs across broad geographic scale...
A validation of satellite derived cyanobacteria detections with state reported events and recreation advisories across U.S. lakes
(JOURNAL) [Published : Jun 01, 2022]
Cyanobacteria harmful algal blooms (cyanoHABs) negatively affect ecological, human, and animal health. Traditional methods of validating satellite algorithms with data from water samples are often inhibited by the expense of quantifying cyanobacteria indicators in the field ...
Possible Antagonism between Cladosporium cladosporioides and Microcystis aeruginosa in a Freshwater Lake during Bloom Seasons
(JOURNAL) [Published : May 17, 2022]
To ensure drinking-water safety, it is necessary to understand the factors that regulate harmful cyanobacterial blooms (HCBs) and the toxins they produce. One controlling factor might be any relationship between fungi and the cyanobacteria. To test this possibility, water samples...
Using satellite imagery and national surveys to identify lakes at-risk for toxic cyanobacteria blooms in the U.S.
(PRESENTATION) [Presented : May 20, 2022]
Algal blooms caused by toxin-producing cyanobacteria are a threat to global water resources and human health. Water resource managers need tools that identify which lakes are at risk of toxic cyanobacteria blooms. We address this need by using Cyanobacteria Assessment Network sat...
Collaborative Monitoring of Cyanobacteria in Rhode Island Lakes and Ponds with Satellite Remote Sensing.
(PRESENTATION) [Presented : May 11, 2022]
Product Description / Abstract: Under certain conditions, cyanobacteria can experience rapid growth (blooms) and may produce toxins, which when released into surrounding waters can potentially cause health risks for wildlife, pets, livestock and humans. Working cooperatively, the...
Baseline Risk Communication for HABs
(PRESENTATION) [Presented : May 18, 2022]
Harmful algal blooms (HABs) are effecting New England waters, causing health risk to humans and the environment. Risk communication designed with best practices will help minimize exposure to these risks. Effective communication requires more than sharing facts. It demands awaren...
Linking multi-media modeling with machine learning to assess and predict lake chlorophyll a concentrations
(JOURNAL) [Published : Dec 13, 2021]
Eutrophication and excessive algal growth pose a threat on aquatic organisms and the health of the public, environment, and the economy. Understanding what drives excessive algal growth can inform mitigation measures and aid in advance planning to minimize impacts....
An Overview on Effectiveness of Agricultural Conservation Practices for Water Quality Improvement
(JOURNAL) [Published : Apr 01, 2022]
This article introduces a Special Collection of literature reviews documenting the performance and cost-effectiveness of six agricultural conservation practices (ACPs): conservation crop rotation, cover crop, filter strip, nutrient management, denitrifying bioreactor, and constru...
Development of reproducible culture methods to produce cyanotoxins to be used to generate acute and chronic endpoints for freshwater organisms.
(PRESENTATION) [Presented : May 19, 2022]
There is a lack of information to estimate safe exposure levels for aquatic life to natural toxins produced by cyanobacteria. The uncertainty in concentrations and purity of standards for cyanotoxins, and their high cost, challenge their use for acute and chronic toxicity tests. ...
Nutrient BMP Tool, RBEROST, and predictive models for cyanobacteria in estuaries and freshwater tidal rivers
(PRESENTATION) [Presented : May 03, 2022]
The River Basin Export Reduction Optimization Support Tool (RBEROST) was developed to allow stakeholders to identify the most cost-effective suite of management practices (wastewater treatment plant upgrades, agricultural conservation practices, stormwater best management practic...
The Historical Prevalence of Cyanobacteria in Spanaway Lake, Pierce County, Washington
(PUBLISHED REPORT) [Published : Mar 01, 2022]
Spanaway Lake in Pierce County (Washington) experiences annual harmful cyanobacterial blooms that produce high concentrations of the toxin, microcystin. The goal of this project was to understand whether, 1) cyanobacteria have been a dominant part of the lake phytoplankton histor...
Satellite-derived cyanobacteria frequency and magnitude in headwaters & near-dam reservoir surface waters of the Southern U.S.
(JOURNAL) [Published : Feb 07, 2022]
Reservoirs are dominant features of the modern hydrologic landscape and provide vital services. However, the unique morphology of reservoirs can create suitable conditions for excessive algae growth and associated cyanobacteria blooms in shallow in-flow reservoir locations by pro...
Use of Molecular Methods to Determine the Presence of Toxic Cyanobacteria in an Urban Lake - Cincinnati
(PRESENTATION) [Presented : Apr 26, 2022]
This presentation introduces molecular monitoring approaches used in the detection and quantification of cyanobacterial groups and cyanotoxin genes implicated in harmful algal blooms. It focuses on results from next generation sequence analysis and qPCR/RT-qPCR methods used to ch...
Multipollutant Reduction Simulation of BMPs with VELMA
(PRESENTATION) [Presented : May 03, 2022]
 This presentation focuses on Puget Sound applications of the U.S. EPA’s VELMA ecohydrological model for identifying watershed BMPs for reducing various pollutants impacting freshwater and marine water quality endpoints of concern. The presentation is one of six worksh...
Use of Molecular Methods to Determine the Presence of Toxic Cyanobacteria in an Urban Lake
(PRESENTATION) [Presented : Apr 26, 2022]
This presentation introduces molecular monitoring approaches used in the detection and quantification of cyanobacterial groups and cyanotoxin genes implicated in harmful algal blooms. It focuses on results from next generation sequence analysis and qPCR/RT-qPCR methods used to ch...
Chemical, Biological and Instrumental methods for detecting harmful algae blooms and their natural toxins
(NEWSLETTER ARTICLE) [Published : Apr 01, 2019]
Harmful algal blooms (HABs) in freshwater and marine systems are defined as an overgrowth of photosynthetic organisms (eukaryote and prokaryote) which have the potential to cause negative health, ecological or economic impacts. These negative impacts are caused by mechanisms that...
Spatial and Temporal Dynamics of Cyanobacterial Blooms in Rhode Island Ponds – an Update for the Friends of Warwick Pond.
(PRESENTATION) [Presented : Apr 18, 2022]
Cyanobacteria are found naturally in freshwater ecosystems and can form blooms under favorable conditions. These harmful algal blooms (cHABs) may be toxic and can affect human and environmental health. A better understanding of how and why blooms form is needed to predict bloom f...
Applications of conventional and advanced technologies for phosphorus remediation from contaminated water
(BOOK CHAPTER) [Published : Aug 27, 2021]
The phosphate remediation is a challenging and expensive environmental issue. It could cost billions to maintain and improve the treatment framework, using conventional wastewater treatment plants to meet the United States Environmental Protection Agency (US-EPA) requirements. Be...
Molecular Methods for HABs Monitoring
(PRESENTATION) [Presented : Apr 06, 2022]
This presentation will introduce molecular monitoring approaches used in the detection and quantification of cyanobacterial groups and cyanotoxin genes implicated in HABs. We will focus our discussion on results from next generation sequence analysis and qPCR/RT-qPCR methods used...
Analysis of incentive policies for phosphorus recovery at livestock facilities in the Great Lakes area
(JOURNAL) [Published : Feb 01, 2022]
Livestock operations have been highly intensified over the last decades, resulting in the advent of large concentrated animal feeding operations (CAFOs). Intensification decreases production costs but also leads to substantial environmental impacts. Specifically, nutrient runoff ...