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Projects

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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An Early Warning System for Pseudo-nitzschia Harmf...

Blooms of some species of the diatom Pseudo-nitzschia produce a neurotoxin that accumulates in shellfish, which can cause illness and even death in humans who eat them. Shellfish managers monitor ...
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Characterization of an Algicidal Agent Produced by...

We examined a biological control agent isolated from a bacteria species that may provide a mechanism for halting the growth of certain types of toxic dinoflagellate harmful algal blooms. We ...
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Comparative Analysis of Quantitative Detection Met...

We are providing a thorough comparison of two different genetic methods used to quickly count the number of harmful algae present in a water sample. Our results will improve harmful ...
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Development and Implementation of an Operational H...

This project developed a prototype operational statistical nowcast/forecast system for three harmful algal bloom (HAB) organisms in the Chesapeake Bay ecosystem, specifically the dinoflagellates Karlodinium veneficum, Prorocentrum minimus, and the ...
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Differences in the Toxicity of the Alga Gambierdis...

The goal of this project is to advance our understanding of toxins produced by different species of the alga Gambierdiscus and how these toxins and their varieties move through the ...
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Harmful Algal Bloom Detection Instrument Validatio...

We are improving detection of species of the toxin-producing alga Alexandrium in the field by producing highly portable, efficient, and effective biosensors. Alexandrium can be hard to identify and sample, ...
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Harmful Algal Bloom Event Response: Helping New Yo...

Emergency funds from NCCOS allowed New York to monitor algal toxins during a bloom event that coincided with a state spending freeze. Shellfish consumers and the reputation of one of ...
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Harmful Algal Blooms Event Response: Responding to...

We helped Alaska state regulators, the shellfish industry, and community leaders initiate routine, rapid screening of noncommercial shellfish in southeast Alaska for paralytic shellfish poisoning (PSP) toxins. We also worked ...
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Improving the Gulf of Maine HAB Forecast with Envi...

Toxic algal blooms pose a serious health risk and often disrupt valuable regional shellfisheries. Eating seafood tainted with algal toxins can sicken or even kill people. We are pioneering use ...
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News

NOAA Aids Efforts to Manage Risks from Lipophilic ...

MERHAB Azadinium sampling in Puget Sound and the Washington outer coast. Sampling sites for twice-monthly mussel and SPATT deployment plus weekly water collection from April 2 – Sept 28, 2018.Water ...
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Mitigation Strategies for Harmful Algal Blooms Spa...

New NCCOS-sponsored research describes a paradigm shift in our understanding of the conditions that control eutrophication (nutrient overenrichment) and harmful algal blooms (HABs) across the freshwater-to marine continuum, and offers ...
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HAB Forecast Gives Washington Confidence to Procee...

Last week's NOAA-sponsored harmful algal bloom forecast for the Pacific Northwest gave the Washington Department of Fish and Wildlife (WDFW) confidence to proceed with this week's opening of the Washington recreational ...
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Four Different Algal Toxins Found in San Francisco...

Scientists have identified four kinds of algal toxins in mussels collected from San Francisco Bay. The study, published in Harmful Algae, is the first to report the co-occurrence of both freshwater and marine ...
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NCCOS and Alaska Partners Provide Harmful Algal Bl...

The newly established Alaska Harmful Algal Bloom Network (AHAB) provides statewide awareness of harmful algal blooms. Alaska shellfish are an important component of the economy, providing food and income to Alaskans ...
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Ninth U.S. Symposium on Harmful Algae Features NCC...

The biennial U.S. Symposium on Harmful Algae provides a comprehensive look at harmful algae and its impacts on the United States marine and freshwater environment. At the 9th US Symposium ...
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NCCOS Helps Shellfish Growers Stay Informed on HAB...

The Jamestown S’Klallam Tribe Oyster Farm in Sequim, Washington. Credit: NOAA. NCCOS organized a special session for the 71st Annual Meeting of the Pacific Coast Shellfish Growers Association that addressed ...
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NCCOS Helps Ohio Respond to Unusual Harmful Algal ...

Sites samples along the Maumee River by BGSU, University of Toledo and Defiance College. Credit: NOAA Concerns regarding a large cyanobacteria harmful algal bloom (HAB) of Microcystis spp. and Planktothrix spp., ...
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National Harmful Algal Bloom Observing Network Hol...

The National Harmful Algal Bloom Observing Network (NHABON) Working Group recently met to document current HAB observing capabilities and identify outstanding requirements or gaps in existing regional observing networks. During ...
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Gulf of Maine Red Tide Monitoring Provides Real-ti...

Figure 1: Depiction of Environmental Sample Processor (ESP) and buoy configured for deployment in the Gulf of Maine. Credit: WHOI From late April to early July 2016, the National Centers ...
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Products

Maps, Tools & Applications

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Data & Publications

An unprecedented coastwide toxic algal bloom linked to anomalous ocean conditions

A coastwide bloom of the toxigenic diatom Pseudo-nitzschia in spring 2015 resulted in the largest recorded outbreak of the neurotoxin, domoic acid, along the North American west coast. Elevated toxins were measured in numerous stranded marine mammals and resulted in ...
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Blooms of Pseudo-nitzschia and Domoic Acid in the San Pedro Channel and Los Angeles Harbor Areas of the Southern California Bight, 2003-2004

Abundances of Pseudo-nitzschia spp. and concentrations of particulate domoic acid (DA) were determined in the Southern California Bight (SCB) along the coasts of Los Angeles and Orange Counties during spring and summer of 2003 and 2004. At least 1500 km2 ...
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Blurred lines: Multiple freshwater and marine algal toxins at the land-sea interface of San Francisco Bay, California

San Francisco Bay (SFB) is a eutrophic estuary that harbors both freshwater and marine toxigenic organisms that are responsible for harmful algal blooms. While there are few commercial fishery harvests within SFB, recreational and subsistence harvesting for shellfish is common ...
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Climatic regulation of the neurotoxin domoic acid

Domoic acid is a potent neurotoxin produced by certain marine microalgae that can accumulate in the foodweb, posing a health threat to human seafood consumers and wildlife in coastal regions worldwide. Evidence of climatic regulation of domoic acid in shellfish ...
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Comparison of sandwich hybridization assay and quantitative PCR for the quantification of live and preserved cultures of Heterosigma akashiwo (Raphidophyceae)

In this study, we directly compared two molecular techniques, sandwich hybridization assay (SHA) and quantitative PCR (qPCR), for quantifying laboratory cultures of the ichthyotoxic raphidophyte Heterosigma akashiwo. To maximize comparisons, all experiments entailed raising H. akashiwo in the laboratory, generating ...
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Effects of an Acute Hypoxic Event on Microplankton Community Structure in a Coastal Harbor of Southern California

Fish mortality and hypoxic events occur in many coastal and inland systems and may result from natural or anthropogenically mediated processes. The effects of consequent changes in water biogeochemistry have been investigated for communities of benthic invertebrates and pelagic metazoans ...
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Effects of growth phase, diel cycle and macronutrient stress on the quantification of Heterosigma akashiwo using qPCR and SHA

The development of molecular probe technologies over the last several decades has enabled more rapid and specific identification and enumeration of phytoplankton species compared to traditional technologies, such as light microscopy. Direct comparisons of these methods with respect to physiological ...
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Gambierdiscus species exhibit different epiphytic behaviors toward a variety of macroalgal hosts

Ciguatera fish poisoning is a common form of seafood poisoning caused by toxins (ciguatoxins) that accumulate in demersal (reef) food webs. The precursors of ciguatoxins are produced by dinoflagellates of the genus Gambierdiscus, and enter the food web via herbivory ...
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Harmful Algae and Their Potential Impacts on Desalination Operations off Southern California

Seawater desalination by reverse osmosis (RO) is a reliable method for augmenting drinking water supplies. In recent years, the number and size of these water projects have increased dramatically. As freshwater resources become limited due to global climate change, rising ...
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Initiation and Development of a Toxic and Persistent Pseudo-nitzschia Bloom off the Oregon Coast in Spring/Summer 2015

In spring/summer 2015, a toxic bloom by the diatom Pseudo-nitzschia (PN) occurred along the west coast of the United States which led to closures of the harvest of razor clams and Dungeness crabs. Twice monthly observations of temperature, salinity, nutrients, ...
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General Pages

Rapid Response

Rapid ResponseNCCOS's rapid response provides state and local coastal public health and resource managers with ready access to critical data on the types of HAB species and toxins present during ...
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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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