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  • Keyword = cyanobacteria.
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Records 1 to 25 of 437

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) ...
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...
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...
Special Report for the Great Lakes: 2015 National Coastal Condition Assessment and 2014-2016 Connecting River System Pilot Assessment
(PUBLISHED REPORT) [Published : Sep 01, 2019]
Companion report to OW's NCCA national report
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...
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...
Linking Water Quality to Drinking Water Treatment Costs Using Time Series Analysis: Examining the Effect of a Treatment Plant Upgrade in Ohio
(JOURNAL) [Published : May 01, 2022]
  We estimate a cost function for a water treatment plant in Ohio to assess the avoided-treatment costs resulting from improved source water quality. Regulations and source water concerns motivated the treatment plant to upgrade its treatment process by adding a granul...
Prophylactic Addition of Glucose Suppresses Cyanobacterial Abundance in Lake Water
(JOURNAL) [Published : Mar 07, 2022]
To mitigate harmful cyanobacterial blooms (HCBs), toxic algicides have been used, but alternative methods of HCB prevention are needed. Our goal was to test the prophylactic addition of glucose to inhibit HCB development, using Microcystis and the toxin microcystin as t...
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...
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...
A geospatial environmental and techno-economic framework for sustainable phosphorus management at livestock facilities
(JOURNAL) [Published : Dec 01, 2021]
Nutrient pollution of waterbodies is a major worldwide water quality problem. Excessive use and discharge of nutrients can lead to eutrophication and algal blooms in fresh and marine waters, resulting in environmental problems associated with hypoxia, public health issues related...
Advances in Environmental Monitoring - Water Sensors
(PRESENTATION) [Presented : Mar 16, 2022]
Sensors are playing an increasingly important role in the monitoring of water quality. EPA’s Office of Research and Development has several efforts aimed at the development and use of sensors—an easily accessible summary of many of these efforts can be found on ORD&rs...
Determination of Cyanotoxins and Prymnesins in Water, Fish Tissue, and Other Matrices: A Review
(JOURNAL) [Published : Mar 16, 2022]
Harmful algal blooms (HABs) and their toxins are a significant and continuing threat to aquatic life in freshwater, estuarine, and coastal water ecosystems. Scientific understanding of the impacts of HABs on aquatic ecosystems has been hampered, in part, by limitations in the met...
Predictive Model of Lake Photic Zone Temperature Across the Conterminous United States
(JOURNAL) [Published : Oct 18, 2021]
As the average global air temperature increases, lake surface temperatures are also increasing globally. The influence of this increased temperature is known to impact lake ecosystems across local to broad scales. Warming lake temperature is linked to disruptions in trophic linka...
Biodesalination of Brackish water using salt tolerant microalgae isolated from a saline Lake, Lake Beseka, Ethiopia
(PRESENTATION) [Presented : Aug 26, 2021]
Due to the limited availability of fresh water sources on our planet earth, desalination technologies have received significant attention to using vast brackish and seawater resources. Large scale desalination plants have been constructed in water-stressed countries and produced ...
Spatio-Temporal Modeling for Forecasting High-Risk Freshwater Cyanobacterial Harmful Algal Blooms in Florida
(JOURNAL) [Published : Nov 02, 2020]
Due to the occurrence of more frequent and widespread toxic cyanobacteria events, the ability to predict freshwater cyanobacteria harmful algal blooms (cyanoHAB) is of critical importance for the management of drinking and recreational waters. Lake system specific geographic vari...
Development of a Risk Characterization Tool for Harmful Cyanobacteria Blooms on the Ohio River
(JOURNAL) [Published : Feb 18, 2022]
A data-driven approach to characterizing the risk of cyanobacteria-based harmful algal blooms (cyanoHABs) was undertaken for the Ohio River. Twenty-five years of river discharge data were used to develop Bayesian regression models that are currently applicable to 20 sites spread-...