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Hypoxia Special Session Lead by NCCOS at 2015 Aquatic Sciences Meeting

Leading a special session on advances in hypoxia modelling, scientists from NCCOS contributed to the global mission of the 2015 Aquatic Sciences (ASLO) Meeting in Grenada, Spain which focused on global and regional patterns of aquatic systems. The hypoxia special session highlighted diverse modeling approaches to a variety of issues from the development of hypoxia […]

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Low Oxygen Conditions Increase Parasite Infections in Oysters

A study funded in part by NCCOS has found that diel-cycling hypoxia—daily cycling of high to very low oxygen levels—in shallow coastal waters increases parasite infections in eastern oysters (Crassostrea virginica). The project team tested and confirmed that diel-cycling hypoxia increases eastern oyster susceptibility to Perkinsus marinus infection, most likely by reducing the oxygen carrying capacity […]

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Primary Cause of Dead Zones is Biological on Pacific Northwest Continental Shelves

Coastal waters of the northern portion of the California Current System experience a seasonal decline in oxygen concentrations and increasing hypoxia (dead zones) over the summer upwelling season resulting in negative impacts to many organisms. NCCOS-sponsored research modelling determined that plankton respiration was the leading influence on seasonal and interannual fluctuations in oxygen concentration and hypoxia in the […]

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Reducing the Gulf of Mexico Dead Zone Using Operational Hypoxia Scenario Models

A recently released white paper assesses the status of several empirical and deterministic models capable of characterizing Gulf hypoxia, also known as the Gulf dead zone. “Modeling Approaches for Scenario Forecasts for Gulf of Mexico Hypoxia” presents conclusions from the 2013 joint NOAA and Northern Gulf Institute Forum for the Gulf of Mexico Research and Coordination […]

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NOAA Estimates Nitrogen Removal Rates from Shellfish Farms around the World

Excessive nutrient input into estuarine and coastal environments, also known as eutrophication, can lead to algal blooms, oxygen depletion, fish kills, and a general loss of key habitats. New research from NOAA supports using shellfish aquaculture for nutrient removal and eutrophication reduction. To include shellfish aquaculture as part of a comprehensive approach to nutrient management, scientists measured […]

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Hypoxia Task Force Makes Progress to Reduce Runoff Fueling Gulf of Mexico Dead Zone

The Mississippi River Gulf of Mexico Watershed Nutrient Task Force (“Hypoxia Task Force”) works to reduce and control hypoxia, or the dead zone, in the Gulf of Mexico. At the Fall Public Meeting in Alton, Illinois, the Task Force reported recent progress in dead zone reduction. New measures and actions were passed to control  nutrient runoff which […]

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What Powers Florida Red Tides?

The results of a long-term research project, sponsored by NOAA’s National Centers for Coastal Ocean Science, focused on the Gulf of Mexico red tide are featured in a special issue of the scientific journal Harmful Algae. History records blooms of the harmful Florida red tide (caused by the microalgal dinoflagellate Karenia brevis) occurring centuries before Florida’s mid-late […]

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NCCOS helps Pennsylvania Prepare for Lake Erie Blooms

When Pennsylvania Governor Tom Corbett learned of the large toxic cyanobacteria (blue-green algae) bloom that disrupted the drinking water supply for hundreds of thousands of Ohio’s citizens, he expressed confidence his state was proactively planning to mitigate any potential human health impacts from toxic cyanobacteria blooms. This confidence grew from the state Department of Environmental Protection […]

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