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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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How Climate Change Could Impact Harmful Algal Blooms

Harmful algal blooms (HABs) are projected to increase as sea surface temperatures rise and ocean acidification continues according to Dr. Alan Lewitus, of NOAA’s National Centers for Coastal Ocean Science. His findings were shared during a symposium at George Mason University in October which covered such topics as climate change and extreme weather effects on […]

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NCCOS Partners with White House to Improve Detection of Excess Nutrients in Aquatic Environments

Earlier this month, NOAA’s National Centers for Coastal Ocean Science and other partners joined the White House Office of Science and Technology Policy in Washington, DC for a workshop to accelerate the development and adoption of nutrient sensors. Excessive amounts of nutrients (mainly nitrogen and phosphorus) entering lakes, rivers, streams, and coastal waters are causing […]

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Tenacity of Brown Tides Linked to Genetic Flexibility

The genetic flexibility of Aureococcus anophagefferens, the harmful alga responsible for “brown tides” off Long Island, allows it to thrive in conditions other algae cannot tolerate. NCCOS-sponsored scientists assessed this alga’s response to environmental stressors, such as low nutrients and low light, by looking at pieces of its RNA, which tell Aureococcus which proteins to […]

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