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Projects

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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Ecophysiology and Toxicity of the Toxic Alga Heter...

We are identifying toxins and environmental factors causing fish-killing blooms by the alga Heterosigma akashiwo in Puget Sound. We develop tools to improve monitoring, early warning, and mitigation to prevent ...
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Effects and Discovery of Chronic Domoic Acid Expos...

Domoic acid, a naturally occurring marine neurotoxin, threatens the health of marine mammals, seabirds, and humans via severe and long-term yet low-level exposure through the food web. Researchers discovered a ...
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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 ...
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Implementation of an Operational Model for Predict...

Earlier NOAA-funded research developed models to predict blooms of toxic Alexandrium fundyense. Toxins accumulate in shellfish, causing illness in human consumers, so states must monitor shellfish and ban harvesting when ...
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Integration of Alternative Methods of Analysis wit...

We are seeking Interstate Shellfish Sanitation Conference approval for a quick test to replace the mouse bioassay in some regulatory instances as the method for monitoring brevetoxins in shellfish. These ...
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News

2017-2018 Florida Red Tide Determined by Ocean Cir...

A composite of all observations of Karenia brevis made by the Florida Wildlife Research Institute from 1953 through 2007. The white ellipse denotes the hypothesized, mid-shelf initiation region. The arrows ...
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Socioeconomic Impacts of Harmful Algal Blooms Stor...

“Hitting us where it hurts“ story map lead image. Credit: NOAA. Increasing numbers of toxic algal blooms in coastal waters and lakes have large social and economic impacts. NOAA’s new ...
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Algae with Mixed Feeding Capabilities May have Adv...

New NCCOS-sponsored research shows the importance of “mixotrophy”—the ability to photosynthesize like a plant and consume like an animal—to the growth of some single-celled organisms, such as the toxic dinoflagellate ...
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NCCOS Research Featured at Florida Red Tide Forum

Red Tide Transport to the Coastline. Given observations indicative of K. brevis red tide, where would these cells go if transported by the circulation? Dr Weisberg and his team applied ...
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NCCOS Forecasts, Funding, Research Help South Flor...

Dead fish on beach near Sarasota, Florida, killed by brevetoxins from 2018 red tide. Credit: Bob Currier, Texas A&M University. NCCOS is doing several things to help south Florida address ...
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NCCOS Funds Ongoing Florida Red Tide Sampling to D...

Flow cam output shows K. brevis cells in samples taken off Madeira Beach, FL in Pinellas County. Credit: NOAA NOAA’s National Centers for Coastal Ocean Science has provided a HAB ...
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New Research from NCCOS Could Improve Survival of ...

The threatened Florida manatee, Trichechus manatus latirostris, inhabits coastal environments where blooms of the toxic red tide dinoflagellate, Karenia brevis, frequently occur. K. brevis produces a suite of neurotoxins, called ...
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NOAA Trains Next Generation of Harmful Algal Bloom...

Dr. Michael Parsons (FGCU) leads a discussion on the toxic dinoflagellate Protoceratium at the third Training Course on the Identification of Harmful Algae in United States Marine Waters. Credit: Bigelow ...
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NOAA Funds Testing of Treatment for Birds Sickened...

A double crested cormorant spreads its wings. Credit: US Fish and Wildlife Service The NCCOS Harmful Algal Bloom Event Response Program awarded $8,250 to Florida’s Clinic for the Rehabilitation of ...
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NCCOS, Partners Respond to Prolonged Florida Red T...

NOAA's Southwest Florida "Red Tide" Respiratory Irritation Forecast for August 20, 2018. Credit: NOAA. A bloom of the red tide alga, Karenia brevis, currently extends over 100 miles along Florida’s ...
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Products

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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 high-resolution pre-operational forecast model of circulation on the Texas-Louisiana continental shelf and slope

A new pre-operational model of circulation over the Texas-Louisiana continental shelf and slope, based on the Regional Ocean Modelling System (ROMS) is presented. The model is designed with a number of practical applications in mind: to predict oil spill trajectories, ...
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A Novel Antibody-Based Biomarker for Chronic Algal Toxin Exposure and Sub-Acute Neurotoxicity

The neurotoxic amino acid, domoic acid (DA), is naturally produced by marine phytoplankton and presents a significant threat to the health of marine mammals, seabirds and humans via transfer of the toxin through the foodweb. In humans, acute exposure causes ...
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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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Analyses of the complete chloroplast genome sequences of two members of the Pelagophyceae: Aureococcus anophagefferens CCMP1984 and Aureoumbra lagunensis CCMP1507

Heterokont members of the Pelagophyceae form the massive brown tides that have continually plagued the coastal regions of the eastern U.S. seaboard and the Gulf of Mexico. To gain a better understanding of the photosynthetic competence that may be linked ...
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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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Causality of an extreme harmful algal bloom in Monterey Bay, California, during the 2014-2016 northeast Pacific warm anomaly

An ecologically and economically disruptive harmful algal bloom (HAB) affected much of the northeast Pacific margin in 2015, during a prolonged oceanic warm anomaly. Caused by diatoms of the genus Pseudo-nitzschia, this HAB produced the highest particulate concentrations of the ...
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Chronic Low-Level Domoic Acid Exposure Alters Gene Transcription and Impairs Mitochondrial Function in the CNS

Domoic acid is an algal-derived seafood toxin that functions as a glutamate agonist and exerts excitotoxicity via overstimulation of glutamate receptors (AMPA, NMDA) in the central nervous system (CNS). At high (symptomatic) doses, domoic acid is well-known to cause seizures, ...
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Coordinated sampling of dynamic oceanographic features with underwater vehicles and drifters

We extend existing oceanographic sampling methodologies to sample an advecting feature of interest using autonomous robotic platforms. GPS-tracked Lagrangian drifters are used to tag and track a water patch of interest with position updates provided periodically to an autonomous underwater ...
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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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PCMHAB

Prevention, Control, and Mitigation of HABs (PCMHAB)PCMHAB projects identify and evaluate a range of methods, like spraying clay shown here, to eliminate or control blooms of harmful algae in ways ...
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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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