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Projects

Toxicity and Potential Food-Web Impacts of Alexand...

Once limited to the U.S. south Atlantic and the Gulf of Mexico, Alexandrium monilatum has extended its range to the lower Chesapeake Bay, where it affects commercial fisheries and shellfisheries ...
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Upwelling and Coastal Land Use Patterns on the Dev...

We are comparing coastal “hot spots” of harmful algal blooms (HABs) in central and southern California to determine why hot spots exist and how human influences, such as nutrient runoff, ...
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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 ...
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Data & Publications

Effects of temperature and salinity on the growth of Alexandrium (Dinophyceae) isolates from the Salish Sea

Toxin-producing blooms of dinoflagellates in the genus Alexandrium have plagued the inhabitants of the Salish Sea for centuries. Yet the environmental conditions that promote accelerated growth of this organism, a producer of paralytic shellfish toxins, is lacking. This study quantitatively ...
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Environmental controls, oceanography and population dynamics of pathogens and harmful algal blooms: Connecting sources to human exposure

Coupled physical-biological models are capable of linking the complex interactions between environmental factors and physical hydrodynamics to simulate the growth, toxicity and transport of infectious pathogens and harmful algal blooms (HABs). Such simulations can be used to assess and predict ...
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Environmental Monitors on Lobster Traps (eMOLT): long-term observations of New England's bottom-water temperatures

Nearly one hundred New England lobstermen have installed temperature sensors on their traps to record hourly values at fixed locations since 2001. These moorings are distributed primarily along the shelf edge in the northern Mid-Atlantic Bight and along the entire ...
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Evaluation of Rapid, Early Warning Approaches to Track Shellfish Toxins Associated with Dinophysis and Alexandrium Blooms

Marine biotoxin-contaminated seafood has caused thousands of poisonings worldwide this century. Given these threats, there is an increasing need for improved technologies that can be easily integrated into coastal monitoring programs. This study evaluates approaches for monitoring toxins associated with ...
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Factors regulating excystment of Alexandrium in Puget Sound, WA, USA

Factors regulating excystment of a toxic dinoflagellate in the genus Alexandrium were investigated in cysts from Puget Sound, Washington State, USA. Experiments were carried out in the laboratory using cysts collected from benthic seedbeds to determine if excystment is controlled ...
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Harmful Algal Blooms along the North American West Coast Region: History, trends, causes, and impacts

Along the Pacific coast of North America, from Alaska to Mexico, harmful algal blooms (HABs) have caused losses to natural resources and coastal economies, and have resulted in human sicknesses and deaths for decades. Recent reports indicate a possible increase ...
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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 ...
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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 ...
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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 ...
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Model initialization in a tidally energetic regime: A dynamically adjusted objective analysis

A simple improvement to objective analysis of hydrographic data is proposed to eliminate spatial aliasing effects in tidally energetic regions. The proposed method consists of the evaluation of anomalies from observations with respect to circulation model fields. The procedure is ...
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