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News

Study of Freshwater Turtles to Improve Treatment o...

New research is paying off long-term for endangered sea turtles facing illness and even death during Florida red tides. From 2011-2014, the NCCOS sponsored project “Brevetoxin Metabolism and Physiology – ...

Robots Help Locate Origins of Shellfish Toxicity i...

Scientists deployed four underwater robotic Environmental Sample Processors (ESPs) in the Bay of Fundy and the eastern Gulf of Maine at the end of last month. The ESPs count the Paralytic Shellfish Poisoning ...

Why the Exceptional Toxicity during the 2015 West ...

New research sponsored by NCCOS explains what might have caused the high toxicity in Monterey Bay, CA during the massive 2015 toxic bloom of the marine diatom Pseudo-nitzschia along the ...

Small Bloom Predicted for Gulf of Maine Red Tide i...

NCCOS and WHOI scientists prepare a sediment corer to collect Alexandrium cysts last fall for the 2017 forecast. Credit: NOAA. This summer's red tide in the Gulf of Maine is ...

NCCOS Joins USGS in Congressional Briefing on Harm...

On April 4, a Congressional Briefing held in Washington, DC, focused on harmful algal blooms (HABs) and their increasing impacts on coastal, Great Lakes, and inland communities and economies. NCCOS's ...

Reducing Migratory Duck Mortality on Padre Island,...

An extremely toxic Microcystis bloom on a pond in the Padre Island National Seashore was associated with a significant mortality of redhead ducks (Aythya americana). The primary concern is the ...

New Guidance for Managing HAB Impacts on Californi...

A newly released report from the California Ocean Science Trust highlights efforts to learn from the 2015 massive bloom of the toxin-producing marine diatom Pseudo-nitzschia that formed off the U.S ...

Predicting the Risks of Harmful Algal Blooms for C...

In California, domoic acid-producing harmful algal blooms (HABs) of the diatom Pseudo-nitzschiaincreasingly threaten bivalve and crab harvesters, aquaculture, and coastal ecosystems. Using a blend of models and satellite ocean color ...

NCCOS Helps New England Respond to Unprecedented H...

For the first time in New England's coastal waters, shellfish have exceeded the regulatory limit for domoic acid - a potent neurotoxin produced by the diatom Pseudo-nitzschia. Domoic acid accumulates ...

NOAA Provides Harmful Algae Identification Trainin...

Effective monitoring and management of harmful algal blooms (HABs) relies on accurate and timely identification of the species involved. Phytoplankton responsible for HABs varies dramatically in size, shape, pigmentation, toxins, ...

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Data & Publications

Patterns of River Influence and Connectivity Among Subbasins of Puget Sound, with Application to Bacterial and Nutrient Loading

Puget Sound is an estuarine inland sea fed by 14 major rivers and also strongly influenced by the nearby Fraser River. A comprehensive, particle-based reanalysis of an existing circulation model was used to map the area of influence of each ...

Phosphorus cycling in the red tide incubator region of Monterey Bay in response to upwelling

This study explores the cycling of phosphorus (P) in the euphotic zone following upwelling in northeastern Monterey Bay (the Red Tide Incubator region) of coastal California, with particular emphasis on how bacteria and phytoplankton that form harmful algal blooms mediate ...

Phylogenetic analysis of Brachydinium capitatum (Dinophyceae) from the Gulf of Mexico indicates membership in the Kareniaceae

Brachidinium capitatum F. J. R. Taylor, typically considered a rare oceanic dinoflagellate, and one which has not been cultured, was observed at elevated abundances (up to 65 cells · mL?1) at a coastal station in the western Gulf of Mexico ...

Planktonic microbes in the Gulf of Maine area

In the Gulf of Maine area (GoMA), as elsewhere in the ocean, the organisms of greatest numerical abundance are microbes. Viruses in GoMA are largely cyanophages and bacteriophages, including podoviruses which lack tails. There is also evidence of Mimivirus and ...

Predicting euphotic-depth-integrated chlorophyll-a from discrete depth and satellite-observable chlorophyll-a off central California

Predicting water column integrated phytoplankton biomass from near-surface measurements has been an important effort in marine ecological research, particularly since the advent of satellite remote sensing of ocean color. Quantitative relationships between chlorophyll-aconcentrations (Chl-a) at the surface and its depth-integrated ...

Predicting harmful algal blooms: a case study with Dinophysis ovum in the Gulf of Mexico

Blooms of Dinophysis ovum and Mesodinium spp. have been observed in the Gulf of Mexico since 2007 using the Imaging FlowCytobot technology. Bloom dynamics of these two organisms in conjunction with ancillary environmental data for a 5-year period were analyzed ...

Prominent Human Health Impacts from Several Marine Microbes: History, Ecology, and Public Health Implications

This paper overviews several examples of important public health impacts by marine microbes and directs readers to the extensive literature germane to these maladies. These examples include three types of dinoflagellates (Gambierdiscus spp., Karenia brevis, and Alexandrium fundyense), BMAA-producing cyanobacteria, ...

Proteome changes driven by phosphorous deficiency and recovery in the brown tide-forming alga Aureococcus anophagefferens

Shotgun mass spectrometry was used to detect proteins in the harmful alga, Aureococcus anophagefferens, and monitor their relative abundance across nutrient replete (control), phosphate-deficient (?P) and ?P refed with phosphate (P-refed) conditions. Spectral counting techniques identified differentially abundant proteins and ...

Quantifying nitrogen assimilation rates of individual phytoplankton species and plankton groups during harmful algal blooms via sorting flow cytometry

While 15N-labeled nitrogen (N) compounds have been used to quantify N uptake rates by plankton communities for decades, accurately ascribing those rates to individual populations or species has been a challenge. Here, we apply sorting flow cytometry combined with species-specific ...

Quantitative real-time polymerase chain reaction for Cochlodinium fulvescens (Dinophyceae), a harmful dinoflagellate from California coastal waters

Harmful blooms formed by species of the dinoflagellate Cochlodinium have caused massive fish kills and substantial economic losses in the Pacific Ocean. Recently, prominent blooms of Cochlodinium have occurred in central and southern California (2004–2008), and Cochlodinium cells are now ...

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