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Projects

Life and Death of Karenia brevis Blooms in the Eas...

An extensive bloom of the brevetoxin-producing Karenia brevis occurred from 2017 to 2019 in Florida. The economic, environmental, and human health impacts were quite severe during this event. This regional ...

Life and Death of a Karenia Bloom in the Western G...

Harmful algal blooms (HABs) are increasing in frequency and pose a threat to human and environmental health. Blooms of Karenia brevis occur nearly annually along the Florida coast which has ...

Linking Biogeochemistry to Harmful Algal Bloom Nut...

The Long Island Brown Tide (LIBT) threatens shellfish and sea grasses in mid-Atlantic estuaries. LIBT-specific gene expression assays are being developed and tested for enzymes and transporters that allow LIBT ...

Linking Models and Field Experiments to Forecast A...

We are investigating the links between environmental variables and harmful algal bloom (HAB) toxins in Lake Erie to better understand the process of toxin development and to forecast HAB toxicity ...

Mechanism of Harmful Algal Bloom Initiation in the...

Blooms of the toxic dinoflagellate, Karenia brevis, threaten human and ecosystem health and local economies around the Gulf of Mexico. Although the blooms mostly prevail on the west coast of ...

Metabolism and Physiology of Red Tide Toxins in Tu...

Endangered sea turtles experience severe mortality during Florida red tides. This project uses non-endangered freshwater turtles as a model animal to determine the effects of Florida red tide on endangered ...

Microcystins in Bivalves: Optimizing of Monitoring...

This project addresses an emerging concern across the US - the transfer of freshwater algal toxins into the marine environment where they can infiltrate the food web and present a ...

Mitigating Microcystis in the Chesapeake Bay

Chitosan, a natural compound, is added to concentrations of local sediments and commercial clays to control harmful algal blooms. We are studying the impacts of this mitigation technique on natural ...

Modeling Factors that Contribute to Harmful Algal ...

Harmful algal blooms that disrupt and degrade coastal aquatic ecosystems are occurring with greater frequency. We developed a model that shows these events are not only the result of nutrient ...

Modeling Favorable Habitat for Alexandrium catenel...

In Puget Sound, the toxic alga Alexandrium catenella threatens people who eat shellfish contaminated with the algal toxin. Previous studies identify “seedbeds” of Alexandrium resting stages (cysts) on the bottom ...

News

NOAA Announces FY22 Notice of Funding Opportunity ...

Lake Erie harmful algal bloom as seen from above on August 5, 2019 during a flight to assist in improvements to the NOAA HAB forecast. Credit: Aerial Associates Photography Inc, ...

Algal Toxins Found in U.S. Seabirds

A publication sponsored in part by NCCOS presents a retrospective analysis of harmful algal bloom (HAB) related mortality events in California, Washington and Rhode Island between 2007 and 2018 involving ...

NCCOS and IOOS Contribute to Successful Kickoff of...

On September 1, 2021 NCCOS, the U.S. Integrated Ocean Observing System (IOOSⓇ) Office, and the IOOS Association organized the inaugural meeting of a newly formed Harmful Algal Bloom Observing Group ...

Long Term Research on the HAB Toxin Domoic Acid In...

A coalition of researchers funded by the NOAA Monitoring and Event Response for Harmful Algal Blooms (MERHAB) Program recently came together to co-locate an Environmental Sample Processor (ESP) off the ...

Florida's HAB Problem: Why are HABs so Prevalent i...

A new publication, sponsored in part by NCCOS, reviews the history and status of harmful algal blooms in Florida, why they occur, the main species of concern and management challenges ...

NOAA Announces FY22 Funding Opportunity for Ocean ...

NOAA’s National Centers for Coastal Ocean Science Competitive Research Program and Ocean Acidification Program are pleased to announce a new 2022 Notice of Funding Opportunity (NOFO) for projects that address ...

Single-day Intensive Sampling Quantifies Algal Tox...

NCCOS-sponsored researchers and their partners conducted one-day intensive water sampling events in 2018 and 2019 to create high spatial resolution snapshots of the amount and locations of cyanobacterial toxins across ...

Workshop Report Defines Agenda for Integrated Rese...

Credit NOAA OAP. NOAA’s Ocean Acidification Program (OAP) and NCCOS have published the proceedings of the virtual Harmful Algal Blooms and Ocean Acidification Workshop in a NOAA Technical Memorandum (OAR-OAP-3) ...

Ice Seals as Sentinels for Algal Toxins in the Pac...

An NCCOS-supported study detected the algal toxins domoic acid and saxitoxin in three out of four species of ice seals in western and northern Alaska. The finding suggests that ice ...

Natural Algicide Eliminates Toxic Algae With Minim...

NCCOS-sponsored research on a natural algicide produced by Shewanella bacteria found that the compound can kill toxic algae without much harm to other organisms. The findings suggest that nature itself ...

Products

Maps, Tools & Applications

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Data & Publications

Phytoplankton-Associated Bacterial Community Composition and Succession during Toxic Diatom Bloom and Non-Bloom Events

Pseudo-nitzschia blooms often occur in coastal and open ocean environments, sometimes leading to the production of the neurotoxin domoic acid that can cause severe negative impacts to higher trophic levels. Increasing evidence suggests a close relationship between phytoplankton bloom and ...

Pilot-scale outdoor photobioreactor culture of the marine dinoflagellate Karlodinium veneficum: Production of a karlotoxins-rich extract

A pilot-scale bioprocess was developed for the production of karlotoxin-enriched extracts of the marine algal dinoflagellate Karlodinium veneficum. A bubble column and a flat-panel photobioreactors (80–281 L) were used for comparative assessment of growth. Flow hydrodynamics and energy dissipation rates (EDR) ...

Planktonic microbes in the Gulf of Maine area

In the Gulf of Maine area (GoMA), as elsewhere in the ocean, the organisms of greatest numerical abundance are microbes. Viruses in GoMA are largely cyanophages and bacteriophages, including podoviruses which lack tails. There is also evidence of Mimivirus and ...

Predicting euphotic-depth-integrated chlorophyll-a from discrete depth and satellite-observable chlorophyll-a off central California

Predicting water column integrated phytoplankton biomass from near-surface measurements has been an important effort in marine ecological research, particularly since the advent of satellite remote sensing of ocean color. Quantitative relationships between chlorophyll-aconcentrations (Chl-a) at the surface and its depth-integrated ...

Predicting harmful algal blooms: a case study with Dinophysis ovum in the Gulf of Mexico

Blooms of Dinophysis ovum and Mesodinium spp. have been observed in the Gulf of Mexico since 2007 using the Imaging FlowCytobot technology. Bloom dynamics of these two organisms in conjunction with ancillary environmental data for a 5-year period were analyzed ...

Prominent Human Health Impacts from Several Marine Microbes: History, Ecology, and Public Health Implications

This paper overviews several examples of important public health impacts by marine microbes and directs readers to the extensive literature germane to these maladies. These examples include three types of dinoflagellates (Gambierdiscus spp., Karenia brevis, and Alexandrium fundyense), BMAA-producing cyanobacteria, ...

Quantitative real-time polymerase chain reaction for Cochlodinium fulvescens (Dinophyceae), a harmful dinoflagellate from California coastal waters

Harmful blooms formed by species of the dinoflagellate Cochlodinium have caused massive fish kills and substantial economic losses in the Pacific Ocean. Recently, prominent blooms of Cochlodinium have occurred in central and southern California (2004–2008), and Cochlodinium cells are now ...

Rapid Downward Transport of the Neurotoxin Domoic Acid in Coastal Waters

Toxic phytoplankton blooms threaten coastlines worldwide by diminishing beach quality and adversely affecting marine ecosystems and human health. The common diatom genus Pseudo-nitzschia consists of several species known to produce the neurotoxin domoic acid. Recent studies suggest that algal blooms ...

Responses of the coastal phytoplankton community to tropical cyclones revealed by high-frequency imaging flow cytometry

To investigate the response of a subtropical coastal phytoplankton community to tropical cyclones, we utilized high temporal resolution (hours) data from the Imaging FlowCytobot (IFCB) deployed in the Gulf of Mexico. In 2010, four tropical cyclones (two during June–July and ...

Seasonal dynamics of the toxic dinoflagellate Alexandrium catenella at Redondo Beach, California, examined by quantitative PCR

The presence of neurotoxic species within the genus Alexandrium along the U.S. coastline has raised concern of potential poisoning through the consumption of contaminated seafood. Paralytic shellfish toxins (PSTs) detected in shellfish provide evidence that these harmful events have increased ...

General Pages

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NOAA Internship Opportunities

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