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Projects

Establishing the Sources of Toxic Cyanobacteria Bl...

Although phosphorus typically limits the growth of freshwater phytoplankton populations, little is known about how the common toxic alga Microcystis aeruginosa responds to variations in phosphorus concentrations and sources. Our ...

Estimating Economic Losses and Impacts of Florida ...

This project, funded by NCCOS through the Gulf of Mexico Coastal Ocean Observing System, will examine the economic impacts of Karenia brevis events across 80 different economic sectors, based on ...

Evaluation of Mitigation Strategies for Harmful Al...

We will assess the potential economic benefits of mitigation strategies for harmful algal blooms in the Dungeness crab fishery along the U.S. West Coast. Why We Care In 2015, the ...

Expanding ISSC Validated Options for Monitoring Di...

In the U.S., the Interstate Shellfish Sanitation Conference (ISSC) and the Food and Drug Administration (FDA) establish methods of toxin analysis to regulate shellfish, and the National Shellfish Sanitation Program ...

Expanding the Southeast Alaska Tribal Ocean Resear...

This project expands existing harmful algal bloom (HAB) monitoring conducted by the Sitka Tribe of Alaska Environmental Research Laboratory (STAERL) to include testing shellfish for domoic acid and diarrhetic shellfish ...

Expansion of Anatoxin-a Monitoring Methods for Har...

This project will improve monitoring and response to harmful blooms of cyanobacteria by expanding the utility of an existing analytical method for detecting members of the anatoxin-a family, a toxin ...

Fast Tool to Detect Toxic Shellfish

The marine food source and livelihood of tribes and communities along the Pacific coast are threatened by Pseudo-nitzschia blooms that produce domoic acid, a potent neurotoxin. To provide remote communities ...

Florida Regional Ecosystem Stressors Collaborative...

We are investigating the current and future impacts of five key stressors–ocean acidification, hypoxia, harmful algal blooms, warming, and eutrophication–on South Florida’s coastal ecosystems. Results will provide actionable information for ...

Genomics of HAB Dinoflagellates: Identification of...

We are working to identify key genes and processes encoded in the dinoflagellate genome that are responsible for regulating the growth, maintenance, and termination of toxic dinoflagellate blooms. Analogous to ...

HABON-NE, An Adaptive Observing Network for Real-T...

New England coastal waters have long been impacted by Alexandrium, a species that causes paralytic shellfish poisoning. Other species have recently emerged in the Gulf of Maine, including Pseudo-nitzschia and ...

News

New Publication Evaluates Chlorophyll-a Algorithms...

Map of the study area showing each monitoring station from the Chesapeake Bay Program used in this study. A new scientific paper describes methods for evaluating the efficacy of five ...

Gulf Stream Warm Core Rings Can Enhance Slope Wate...

Figure 1: (a) Satellite images of SST on 24 Aug, 2016 highlighting 6 WCRs in the slope sea off the Mid-Atlantic Bight and Gulf of Maine. (b) Figure showing the ...

NCCOS Provides HABscope Training for Chesapeake Ba...

Dr. Margaret Mulholland from Old Dominion University (left) and Dr. Kim Reece from the Virginia Institute of Marine Science (center, at microscope) test the HABscope system during last month’s training ...

Smaller Harmful Algal Bloom Predicted for Western ...

Bloom severity index for 2002–2021, and the forecast for 2022. The index is based on the amount of biomass over the peak 30-days. NOAA and its research partners are forecasting ...

New Virtual Workshop Expands Tribal HAB Sampling t...

Thomas Farrugia of AOOS demonstrating the digital microscope to be used by participants. NCCOS scientists from the Phytoplankton Monitoring Network (PMN), in collaboration with the Alaska Ocean Observing System and ...

Scientists Train Underwater Gliders to Find, Track...

The dynamic nature of the ocean, including its many chemical and biological processes, makes it challenging to monitor microscopic, marine algae in real time, but NCCOS-funded scientists have shown it ...

Harmful Algal Blooms May Soon Wreak Havoc in Arcti...

Climatic changes in Arctic Alaska are resulting in more harmful algal blooms (HABs) for the region, signaling a potential growing threat to human and ecosystem health. Over the last decade, ...

Model Predicts Reducing Only Phosphorus Will Make ...

Harmful algal bloom in Western Basin of Lake Erie. Credit: Aerial Associates Photography, Inc. by Zachary Haslick. A new model from NCCOS-funded researchers describes the cellular mechanisms driving toxin production ...

Workshop Empowers Southcentral Tribal Communities ...

NCCOS, Ocean and Earth Environmental Services, and the Chugach Regional Resources Commission (CRRC) have initiated their Cooperative Research and Development Agreement (CRADA) with a two day training workshop at the ...

NOAA Predicts a Smaller than Average Algal Bloom f...

Blooms with a severity index above 5 generally pose greater risk to drinking water and recreation in Lake Erie, but the impact of a bloom also depends on its location, ...

Products

Maps, Tools & Applications

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Data & Publications

Harmful Algal Blooms in Coastal Waters: Options for Prevention, Control and Mitigation

This report is the product of a panel of experts in the science of blooms of unicellular marine algae which can cause mass mortalities in a variety of marine organisms and cause illness and even death in humans who consume ...

Histological techniques for marine bivalve mollusks and crustaceans

During the mid-1950s, massive and widespread oyster mortalities, particularly in the Delaware and Chesapeake Bay areas, served as a stimulus to establish a federal oyster mortality study program. Consequently, Congress appropriated funds to the then Bureau of Commercial Fisheries (BCF) ...

Identification of a vacuolar proton channel that triggers the bioluminescent flash in dinoflagellates

In 1972, J. Woodland Hastings and colleagues predicted the existence of a proton selective channel (HV1) that opens in response to depolarizing voltage across the vacuole membrane of bioluminescent dinoflagellates and conducts protons into specialized luminescence compartments (scintillons), thereby causing ...

Identification of Azadinium species and a new azaspiracid from Azadinium poporum in Puget Sound, Washington State, USA

The identification of a new suite of toxins, called azaspiracids (AZA), as the cause of human illnesses after the consumption of shellfish from the Irish west coast in 1995, resulted in interest in understanding the global distribution of these toxins ...

Identifying Bloom Origins of the Toxic Dinoflagellate Karenia brevis in the Western Gulf of Mexico Using a Spatially Explicit Individual-Based Model

Harmful algal blooms caused by Karenia brevis result in large fish kills, human respiratory irritation, and shellfishing closures in affected areas. Most previous work on bloom formation in the Gulf of Mexico has focused on the west coast of Florida ...

Initial skill assessment of the California Harmful Algae Risk Mapping (C-HARM) system

Toxic algal events are an annual burden on aquaculture and coastal ecosystems of California. The threat of domoic acid (DA) toxicity to human and wildlife health is the dominant harmful algal bloom (HAB) concern for the region, leading to a ...

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, ...

Investigation of 2006 Alexandrium fundyense bloom in the Gulf of Maine: In-situ observations and numerical modeling

In-situ observations and a coupled bio-physical model were used to study the germination, initiation, and development of the Gulf of Maine (GOM) Alexandrium fundyense bloom in 2006. Hydrographic measurements and comparisons with GOM climatology indicate that 2006 was a year ...

Karmitoxin: An Amine-Containing Polyhydroxy-Polyene Toxin from the Marine Dinoflagellate Karlodinium armiger

Marine algae from the genus Karlodinium are known to be involved in fish-killing events worldwide. Here we report for the first time the chemistry and bioactivity of a natural product from the newly described mixotrophic dinoflagellate Karlodinium armiger. Our work ...

LC-MS/MS Detection of Karlotoxins Reveals New Variants in Strains of the Marine Dinoflagellate Karlodinium veneficum from the Ebro Delta (NW Mediterranean)

A liquid chromatography-tandem mass spectrometry (LC-MS/MS) method was developed for the detection and quantitation of karlotoxins in the selected reaction monitoring (SRM) mode. This novel method was based upon the analysis of purified karlotoxins (KcTx-1, KmTx-2, 44-oxo-KmTx-2, KmTx-5), one amphidinol ...

General Pages

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NOAA Internship Opportunities

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