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Projects

Uncovering the Mechanisms behind Wintertime Occurr...

Paralytic shellfish toxins (PSTs) from the alga Alexandrium hinder the wintertime geoduck clam fishery in Southeast Alaska. With no winter blooms of Alexandrium on record, scientists hypothesize that the toxins ...
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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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User-Driven Tools to Predict and Assess Effects of...

We are developing user-friendly, management-scale forecasting tools and quantitative indicators for hypoxia impacts on the Northern Gulf of Mexico ecosystem. We will assess minimum data needs to ensure these forecasts ...
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Using Linked Models to Predict Impacts of Hypoxia ...

We are linking a suite of well-established models to quantify fish and shrimp population responses to combinations of nutrient loadings and planned river diversions. Our scenario analyses include different land-use ...
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Using Satellite Imagery to Assess Impacts of Land-...

Rainwater runoff from coastal watersheds, especially during flood events, transports sediment and other pollutants into estuaries and nearshore marine environments that often have negative effects on plants and animals living ...
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Validating the Technique for Identifying Paralytic...

Paralytic shellfish poisoning (PSP) is a world-wide, sometimes fatal seafood poisoning caused by potent algal neurotoxins that accumulate in shellfish. Most nations have certified shellfish PSP testing programs required for ...
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Where is all the Brevetoxin in Florida Dolphins?

After over 500 bottlenose dolphins washed ashore during a decade of Florida red tides, puzzled scientists measured little to no brevetoxin in them. An unusual mortality event occurred in 2004 ...
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Where is the Fish Food? Chesapeake Bay Mesozooplan...

The purpose of this project is to collect and document the abundance and composition of Chesapeake Bay mesozooplankton, an important food source for juvenile fish in the region. The information ...
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News

Another Average “Dead Zone” Predicted ...

Outlook incorporates multiple hypoxia models for the second year Scientists deploy a sensor to collect water samples to test oxygen levels during the 2015 cruise to measure the size of ...
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Students Learn the Value of Cetacean Strandings in...

More than 20 students and faculty from the University of Georgia's Maymester program visited NCCOSinCharleston, SC to learn how cetacean strandings can be used for coastal change detection. The lecture, ...
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Annual Lake Erie Harmful Algal Bloom Projections A...

The early season harmful algal bloom projection for Lake Erie started last month. The projection gives the range of severity of the cyanobacteria bloom that is likely to occur in ...
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Models Highlight Benefits of Aquaculture in Long I...

Shellfish bioextraction has the potential to improve water quality and boost the economy NOAA scientists are studying the effectiveness of shellfish aquaculture for nutrient removal around the Long Island Sound ...
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Gulf of Maine Red Tide Monitoring Season Begins fo...

Harmful algal bloom monitoring is underway in the Gulf of Maine, with near real-time early warning of potential toxic blooms being provided by three Environmental Sample Processors (ESPs). The ESPs ...
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NOAA Supports Florida’s Monitoring of Brown ...

NCCOS has approved a Harmful Algal Bloom Event Response project that will enhance state efforts to monitor and assess the extent of an active bloom of Aureoumbra lagunensis algae, also ...
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Offshore Sewage Release in Southern California Bri...

A scheduled sewage release off Los Angeles provided a unique opportunity to study before and after impacts of massive nutrient injection into coastal waters. Researchers hypothesized large, potentially harmful algal ...
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NOAA Improves Monitoring of Ciguatera in Fish

NCCOS and their partners have developed a new method for detecting ciguatoxins in fish that does not rely on the typical use of radioisotopes, which are highly regulated and often ...
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NCCOS Projects at the Forefront of Numerical Estua...

Scientists' use of simulation models has increased during the past several decades as a widely accepted tool for investigations into estuarine dynamics. A recently published scientific review paper, authored by ...
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Gulf of Maine Red Tide Forecast Predicts Small Blo...

This summer the Gulf of Maine red tide is predicted to be the smallest observed over the last eleven years, as forecast by researchers at Woods Hole Oceanographic Institution (WHOI) ...
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Data & Publications

Molecular and biochemical responses of hypoxia exposure in Atlantic croaker collected from hypoxic regions in the northern Gulf of Mexico

A major impact of global climate change has been the marked increase worldwide in the incidence of coastal hypoxia (dissolved oxygen, DO<2.0 mg l-1). However, the extent of hypoxia exposure to motile animals such as fish collected from hypoxic waters ...
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Molecular Characterization and Hypoxia-Induced Upregulation of Neuronal Nitric Oxide Synthase in Atlantic Croaker: Reversal by Antioxidant and Estrogen Treatments

Neuronal nitric oxide synthase (nNOS) catalyzes production of nitric oxide in vertebrate brains. Recent findings indicate that endothelial NOS and reactive oxygen species (ROS) are significantly increased during hypoxic stress and are modulated by antioxidants. However, the influence of antioxidants ...
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Molecular Response of the Bloom-Forming Cyanobacterium, Microcystis aeruginosa, to Phosphorus Limitation

Cyanobacteria blooms caused by species such as Microcystis have become commonplace in many freshwater ecosystems. Although phosphorus (P) typically limits the growth of freshwater phytoplankton populations, little is known regarding the molecular response of Microcystis to variation in P concentrations ...
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Molecular structure characterization of riverine and coastal dissolved organic matter with ion mobility quadrupole time-of-flight LCMS (IM Q-TOF LCMS)

Deciphering molecular structures of dissolved organic matter (DOM) components is key to understanding the formation and transformation of this globally important carbon pool in aquatic environments. Such a task depends on the integrated use of complementary analytical techniques. We characterize ...
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Monitoring Approaches for Early Warning of Domoic Acid Events in Washington State

On the U.S. west coast, blooms of the potentially toxic diatom Pseudo-nitzschia can cause amnesic shellfish poisoning (ASP), resulting in economic impacts to coastal economies and public health concerns. The transfer of toxin, via filter feeding of Pseudo-nitzschia or ingestion ...
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Monitoring Oregon Coastal Harmful Algae: Observations and Implications of a Harmful Algal Bloom-Monitoring Project

The accumulation of domoic acid (DA) and saxitoxins (STX), phycotoxins produced by some species of Pseudo-nitzschia and Alexandrium, respectively, in coastal food webs are a focus of research on the West Coast of the United States due to the deleterious ...
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Movement of Juvenile Weakfish (Cynoscion regalis) and Spot (Leistomus xanthurus) in Relation to Diel-cycling Hypoxia in an Estuarine Tributary: Assessment Using Acoustic Telemetry

Fish movement and the spatial and temporal dynamics of hypoxia determine hypoxia exposure and the effect of poor water quality on nursery habitat function. Although water quality criteria for dissolved oxygen (DO) are well defined, hypoxia exposure of juvenile estuary-dependent ...
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Multiple Stressors at the Land-Sea Interface: Cyanotoxins at the Land-Sea Interface in the Southern California Bight

Blooms of toxic cyanobacteria in freshwater ecosystems have received considerable attention in recent years, but their occurrence and potential importance at the land-sea interface has not been widely recognized. Here we present the results of a survey of discrete samples ...
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Multivariable statistical regression models of the areal extent of hypoxia over the Texas-Louisiana continental shelf

Observations of the areal extent of seasonal hypoxia over the Texas–Louisiana continental shelf from 1985 to 2010 are correlated with a variety of physical and biogeochemical forcing mechanisms. Significant correlation is found between hypoxic area and both nitrogen load (r2 ...
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Mussel Site Description and Sampling Procedures for Washington State

National Status and Trends (NS&T) Mussel Watch Program provides status of and temporal trends of coastal contaminant conditions. Bivalve tissues are analyzed for a suite of about 500 legacy and emerging chemicals of concern. In addition, bivalve tissues are assessed ...
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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.

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