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Red Tide Toxin Metabolite Accumulates in Organs, May Pose Greater Risk to Shellfish Consumers

In 2012, the state of Texas experienced the longest red tide on record, leading to a collapse of its oyster industry. Red tides in the Gulf of Mexico affect humans, wildlife, fisheries, and the regional tourist-related economy. They are caused by the harmful algae Karenia brevis, which release a neurotoxin called brevetoxin that accumulates in exposed shellfish and […]

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The National Coral Reef Monitoring Program begins “Puerto Rico” Phase

This summer, National Centers for Coastal Ocean Science (NCCOS) researchers began collecting data on coral reefs around the island of Puerto Rico to help local natural resource managers address coral reef management concerns as part of the National Coral Reef Monitoring Program’s “Puerto Rico phase.” This program collects standardized biological, physical, and socioeconomic monitoring data […]

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Coastal Ocean Acidification: The Other Eutrophication Problem

Eutrophication, or increased nutrient loading to estuaries, causes algae to bloom and consequently coastal hypoxia (low oxygen waters) when the algal biomass decomposes. Often overlooked, eutrophication can also produce carbon dioxide, which leads to a lowering of seawater pH (or increasing acidity). A recent invited paper by scientists supported by NCCOS and the NOAA Ocean Acidification Program shows low […]

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Average 2014 Gulf of Mexico ‘Dead Zone’ Confirms NOAA-supported Forecast

National Centers for Coastal Ocean Science supported scientists documented that the 2014 “dead zone” (area of hypoxia, or low oxygen) in the northern Gulf of Mexico west of the Mississippi River delta now covers 5,052 square miles of sea floor, or about the size of the state of Connecticut. Though average in size and smaller than last year, […]

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Gliders Map Large Red Tide Bloom in Gulf of Mexico for Rapid Response

NCCOS is supporting the rapid deployment of self-propelled underwater robotic gliders to map an emerging red tide bloom in the Gulf of Mexico. The bloom of Karenia brevis, Florida Red Tide, was detected by an NCCOS-sponsored new modeling tool on July 23 and the Florida Fish and Wildlife Commission (FWC) promptly issued a public red tide notice alerting the public of […]

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Declining Oxygen Levels Threaten Oysters in Chesapeake Bay

NCCOS-sponsored research by the Smithsonian Institution Environmental Research Center (SERC) reveals low dissolved oxygen (hypoxia) hampers oysters’ ability to fight Dermo, a disease that has ravaged oysters throughout the Chesapeake Bay, resulting in up to two to three times more infected oysters than in waters with normal oxygen levels. Hypoxia is commonly studied on large geographic […]

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Puget Sound Stakeholders See Value in HAB Forecasts

At a June 26 meeting, NCCOS-funded ECOHAB project investigators concluded that climate change could increase the window of opportunity for blooms of the toxic dinoflagellate, Alexandrium catenella to occur. In light of this information, state officials expressed strong interest in seasonal HAB forecasts, while industry and local managers requested daily to weekly forecasts. Although future climate change will […]

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New Modeling Tool Detects and Forecasts Red Tide in the Gulf of Mexico

The week of July 21, a new modeling tool based on models funded by the NCCOS Ecology and Oceanography of Harmful Algal Bloom (ECOHAB) and Monitoring and Event Response for Harmful Algal Blooms (MERHAB) Programs predicted and detected a Red Tide harmful algal bloom (HAB) off the West Coast of Florida. The University of South […]

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