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Harmful Algal Bloom Intensity May be Tied to Ocean Carbon Dioxide Levels

Recent findings show that increases in oceanic carbon dioxidefrom the burning of fossil fuels over the last 200 years may have increased the intensity and toxicity of Karenia brevis blooms. Researchers from the National Centers for Coastal Ocean Science (NCCOS) report that this effect is projected to increase substantially by the turn of the century with […]

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Texas Alerted to Toxic Pseudo-nitzschia Bloom in Galveston Bay

Volunteers with NOAA’s Phytoplankton Monitoring Network have reported a bloom of the diatom, Pseudo-nitzschia in Galveston Bay, Texas, and NOAA’s Analytical Response Team has confirmed that the bloom is producing domoic acid, a neurotoxin that can cause amnesiac shellfish poisoning. State managers of the Texas Parks and Wildlife Department and Texas Department of State Health […]

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Improving Paralytic Shellfish Poisoning Response in Alaska

Harmful algal blooms, particularly those that cause paralytic shellfish poisoning, pose a threat to human health, food security, and the economy of local communities in Alaska. There is a need for greater understanding of these blooms by community members and for the development of an effective and integrated monitoring system. To meet these needs, NCCOS […]

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Galveston Bay Closed to Oyster Harvesting After Scientists Detect Toxic Algal Bloom

The Texas Department of State Health Services is temporarily closing all of the Galveston Bay system to the harvesting of oysters, clams, and mussels because of elevated levels of an alga that can produce a toxin in some shellfish. NCCOS-funded scientists at Texas A&M University detected the harmful algal bloom and notified the state agency, […]

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NCCOS-developed Method for Toxins Detection Approved for Regulatory Testing of Shellfish in the U.S

Earlier this year, the Interstate Shellfish Sanitation Conference (ISSC) approved a new assay developed by the National Centers for Coastal Ocean Science (NCCOS) as an official method for identifying toxicity that could result in paralytic shellfish poisoning. This approval is the culmination of more than a decade of effort to find an alternative to live animal […]

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Working with State to Document First Occurrence of Harmful Karenia mikimotoi Algae in Alaskan Waters

Starting in late Sept. 2013, a bloom of the phytoplankton Karenia mikimotoi began, progressed, and ultimately covered most of Kachemak Bay, Alaska. The bloom caused the water to turn brown and foam at the surface for several weeks, causing concern in local communities. In response, the Kachemak Bay National Estuarine Research Reserve and the NCCOS […]

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Ocean Acidification Promotes Disruptive and Harmful Algal Blooms on Our Coasts

The general decline in ocean pH (i.e., more acidic conditions) from the increasing concentrations of carbon dioxide (CO2) is well documented. Also well documented are increased nutrients entering coastal waters often promoting excessive and ecosystem disruptive algae blooms, including harmful algal blooms. The decay of these coastal blooms promotes bacterial respiration resulting in increased CO2, […]

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NCCOS Continues to Help Pennsylvania Respond to Lake Erie Harmful Algal Bloom

Following the first reported cyanohab bloom in Presque Isle State Park in July 2013, the NCCOS Harmful Algal Bloom (HAB) Rapid Response Team supported the Pennsylvania Department of Environmental Protection (PADEP) as they mobilized to address public concerns about toxins, recreational restrictions, and health advisories. This aid helped keep swimmers in the popular park safe, […]

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