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Projects

A Mechanism Based Intervention for Brevetoxin Indu...

The Florida manatee inhabits environments in which blooms of the toxic dinoflagellate, Karenia brevis, frequently occur. K. brevis produces brevetoxins, that result in fish kills, contamination of shellfish, and respiratory ...
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A Study of Gambierdiscus ‘Super Bugs’ ...

Ciguatera fish poisoning (CFP) is the most common algal-borne illness worldwide. It is a debilitating syndrome caused by consumption of fish contaminated with ciguatoxins (CTXs) produced by the dinoflagellate Gambierdiscus ...
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Application of Quantitative Molecular Methods to C...

This project supports development for two lab-based quantitative molecular methods for more rapid, accurate detection of Alexandrium catenella resting cysts in sediment from the Gulf of Maine, Puget Sound, and ...
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Are Growth and Toxicity of the Dinoflagellate Alex...

Blooms of Alexandrium fundyense result in economic losses to fisheries, aquaculture, and pose public health risks. Typically, A. fundyense growth and toxicity are seen as dependent on light, temperature, and ...
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Causes and Consequences of Cell Death in the Toxic...

Numerous studies have increased understanding of processes that lead to algal bloom initiation, growth, and transport but little is known about the causes of bloom decline and termination. Preliminary results ...
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Complex Interactions Between Harmful Phytoplankton...

We identified how nutrients and exotic zebra mussels interact to promote harmful algal blooms (HABs) in the Great Lakes. Results show the relationship between nutrient loading, herbivore grazing, and HABs ...
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Cross-Regional Comparison of Dinophysis Bloom Dyna...

Harmful algal blooms of Dinophysis have recently emerged as a human health threat in the U.S., resulting in closures of shellfish harvesting to prevent Diarrhetic Shellfish Poisoning. We are working ...
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Deposition and Resuspension of Alexandrium fundyen...

Toxins from annual blooms of Alexandrium fundyense accumulate in shellfish; shellfish harvesting closures protect human health, but are economically disruptive. Seed-like cysts produced by A. fundyense accumulate in bottom sediments ...
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Development of a Coupled Hydrodynamic-Biogeochemic...

Harmful Algal Blooms (HABs) in the Chesapeake Bay, which threaten human and ecosystem health, are more frequent and severe than decades ago. We are developing a new model that incorporates ...
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ECOHAB: GOMTOX: Dynamics of Alexandrium fundyense ...

Extensive shellfish resources in the Gulf of Maine are frequently contaminated with toxins produced by the red tide dinoflagellate Alexandrium fundyense. Shellfish harvesting must be closed to protect public health ...
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News

NCCOS Research Provides Scientific Foundation for ...

A recent U.S. Supreme Court (SCOTUS) ruling found that pollution discharge into groundwater from a Maui County (HI) sewage treatment plant (County of Maui v. Hawaii Wildlife Fund) fueled macroalgal ...
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Co-occurrence of Different HAB Toxins Detected in ...

NCCOS-sponsored research has documented the presence of three harmful algal bloom (HAB) toxins at seven different locations, about 18 to 33 miles apart, off the coast of southern California. All ...
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NCCOS “HABs Grab” Takes One-Day Snapshot of Lake E...

HABs Grab 2019 research team. Credit J. Chaffin, Ohio State University. Initiated and funded in part by NCCOS, scientists in the Western Basin of Lake Erie conducted the largest coordinated ...
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Why are Toxic Pseudo-nitzschia Blooms Increasing i...

In the Gulf of Maine (GOM), the presence of the toxic diatom genus Pseudo-nitzschia (PN) is growing. Unprecedented levels of domoic acid in 2016 led to the first Amnesic Shellfish ...
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Protecting Your Dog from Harmful Algal Blooms: Inf...

Infographic: Keeping Your Dog Safe from HABs. Transcript here | Download graphic here HAB 101: Harmful algal blooms — commonly called HABs — are found in every state in the U.S., ...
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Florida Governor Appoints NCCOS Scientist to Red T...

Dr. Quay Dortch. Credit: NOAA. Governor Ron DeSantis has appointed NCCOS's Dr. Quay Dortch to the recently re-organized Florida Red Tide Task Force. The governor made the announcement at an ...
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Underwater Robotic Sensors Deployed in Gulf of Mai...

Map showing locations of ESPs (yellow dots) and cruise survey stations (blue dots) in the Bay of Fundy and the Gulf of Maine. Credit: Woods Hole Oceanographic Institution. Last week, ...
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Toxicity of the Dinoflagellate Alexandrium Control...

A new study supported by NCCOS shows that the presence of zooplankton grazers dramatically increases toxin production in the marine dinoflagellate Alexandrium catenella, a species notorious for its paralytic shellfish ...
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Products

Maps, Tools & Applications

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Data & Publications

A changing nutrient regime in the Gulf of Maine

Recent oceanographic observations and a retrospective analysis of nutrients and hydrography over the past five decades have revealed that the principal source of nutrients to the Gulf of Maine, the deep, nutrient-rich continental slope waters that enter at depth through ...
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A quantitative real-time PCR assay for the identification and enumeration of Alexandrium cysts in marine sediments

Harmful algal blooms (HABs) are a global problem that affects both human and ecosystem health. One of the most serious and widespread HAB poisoning syndromes is paralytic shellfish poisoning, commonly caused by Alexandrium spp. dinoflagellates. Like many toxic dinoflagellates, Alexandrium ...
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Asynchronous vertical migration and bimodal distribution of motile phytoplankton

Some motile phytoplankton have the capability to exploit deep sources of nutrients in a vertical migration cycle: photosynthesis in the near-surface layer, transit to depth, uptake of the limiting nutrient and transit back to the surface layer. If all four ...
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Bloom dynamics of the red tide dinoflagellate Alexandrium fundyense in the Gulf of Maine: a synthesis and progress towards a forecasting capability

Paralytic shellfish poisoning (PSP) is a recurrent and widespread problem in the Gulf of Maine (GOM) caused by the dinoflagellate Alexandrium fundyense. Blooms of this species have been the subject of more than a decade of investigation through the ECOHAB-GOM ...
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Detecting copepod grazing on low-concentration populations of Alexandrium fundyense using PCR

Zooplankton grazing is often a significant loss term for phytoplankton populations, including harmful algae, impacting the development and decline of blooms. However, detecting and quantifying predation on phytoplankton is often challenging, particularly during early bloom stages when phytoplankton cell concentrations ...
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Diversity and dynamics of a widespread bloom of the toxic dinoflagellate Alexandrium fundyense

Historically, cosmopolitan phytoplankton species were presumed to represent largely unstructured populations. However, the recent development of molecular tools to examine genetic diversity have revealed differences in phytoplankton taxa across geographic scales and provided insight into the physiology and ecology of ...
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Does the fall phytoplankton bloom control recruitment of Georges Bank haddock, Melanogrammus aeglefinus, through parental condition?

In 2003, the Georges Bank stock of haddock (Melanogrammus aeglefinus) experienced the largest recruitment event recorded during its assessed history. Several hypotheses have been advanced to explain recruitment variability in this much-scrutinized stock, including variability in the retention of eggs ...
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Drifter Observations of the Gulf of Maine Coastal Current

Two-hundred and twenty seven satellite-tracked drifters were deployed in the Gulf of Maine (GoM) from 1988 to 2007, primarily during spring and summer. The archive of tracks includes over 100,000 km logged thus far. Statistics such as transit times, mean ...
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Dynamics of a mesoscale eddy off Cape Ann, Massachusetts in May 2005

Observations and numerical modeling indicate that a mesoscale anti-cyclonic eddy formed south of Cape Ann at the northern entrance of Massachusetts Bay (MB) during May 2005, when large river discharges in the western Gulf of Maine and two strong Nor'easters ...
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Effects of inorganic and organic nitrogen and phosphorus on the growth and toxicity of two Alexandrium species from Hong Kong

The effects of three nitrogen (N) and two phosphorus (P) inorganic and organic forms on the growth, toxin content and composition, toxin production, and chemical composition of Alexandrium catenella and Alexandrium tamarense isolated from coastal waters of Hong Kong were ...
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General Pages

ECOHAB

Ecology and Oceanography of HABs (ECOHAB)Toxic Karenia brevis stains the water off South Padre Island, Texas, a rusty red. We fundresearch to understand the biology of harmful algae species and ...
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Funding Opportunities

NCCOS Funding OpportunitiesNCCOS supports the Competitive Research Program (CRP) and the RESTORE Science Program that provide the critical information and predictive capabilities required to manage the nation’s coastal resources in ...
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HABHRCA

Harmful Algal Bloom and Hypoxia Research and Control ActThe Issue Harmful algal blooms (HABs) and hypoxic events (severe oxygen depletion) are some of the most scientifically complex and economically damaging ...
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MERHAB

Monitoring and Event Response (MERHAB)Our funding enhances state and regional monitoring with advanced harmful algae detection capabilities, from low-cost shellfish toxin tests to high-tech sensors at sea. (Credit: Washington State ...
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PCMHAB

Prevention, Control, and Mitigation of HABs (PCMHAB)NCCOS projects identify and evaluate a range of methods to prevent, control or mitigate blooms of harmful algae in ways that are safe for ...
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Stressor Impacts and Mitigation

Stressor Impacts & MitigationHarmful Algal BloomsManagers of fisheries, beaches, and water treatment facilities need information on HAB detection and forecasting to plan for and deal with the adverse environmental, economic, ...
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NOAA Internship Opportunities

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NCCOS delivers ecosystem science solutions for stewardship of the nation’s ocean and coastal resources, in direct support of NOS priorities, offices, and customers, and to sustain thriving coastal communities and economies.

National Centers for Coastal Ocean Science
1305 East West Highway, Rm 8110
Silver Spring, MD 20910
Phone: (240) 533-0300 / Fax: (301) 713-4353
Email: nccos.webcontent@noaa.gov

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