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Study Supports EPA to Control Both Nitrogen and Phosphorus in Freshwaters

One of the most common bloom-forming cyanobacteria (blue green algae) in freshwater ecosystems is Microcystis, which produces the liver toxin microcystin. Like many cyanobacteria, blooms of Microcystis are associated with higher temperatures and the availability of nitrogen (N) and phosphorus (P). Many freshwater ecosystems are P-limited, meaning P plays the key role in the occurrence of most cyanobacteria blooms, […]

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NCCOS Sponsors 20 New Research Projects

NCCOS awarded nearly $4.5 million in new research grants while maintaining sponsorship of 42 continuing projects during 2015 for a total of $8.2 million in funding for innovative research. All of the endeavors address significant and complex coastal issues. The projects were selected using a rigorous, competitive, and peer-review process. The cutting-edge research will provide critical […]

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Investigating Diamondback Terrapin Die-Offs in New York

From late April into May 2015 hundreds of diamondback terrapin turtles (Malaclemys terrapin)  began dying and washing up on beaches in the western part of Long Island, New York. Simultaneously an on-going Alexandrium fundyense bloom occurred. Alexandrium produces a potent neurotoxin, saxitoxin, which is the cause of paralytic shellfish poisoning (PSP). The terrapin tissues were […]

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Science Informs Vote to Protect Mid-Atlantic Deep-Sea Corals

On June 10, NCCOS’s cross-NOAA partnerships and investment in carrying out spatial analyses of deep-sea coral ecosystems informed a near-unanimous vote by the Mid-Atlantic Fishery Management Council (MAFMC) to protect more than 38,000 square miles of seafloor, stretching from New York to Virginia, from bottom fishing activities. NCCOS played a lead role producing statistical models […]

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Water Quality Improvements Through Shellfish Aquaculture Highlighted in NOAA Science Seminar Series

A recent presentation highlighted a new NCCOS modeling study in Long Island Sound (LIS) and Great Bay Piscataqua Regional Estuaries (GBP) that focused on the water quality benefits of shellfish aquaculture. The presentation, “Eutrophication and Aquaculture; Shellfish can help the Bay!,”reported nitrogen removal estimates through cultivation of oysters equivalent to 1% of total nutrient inputs discharged […]

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NCCOS Works to Track and Eliminate Freshwater Algal Toxins

A new study has documented the fate of microcystins—the most common of the freshwater blue-green algae toxins—and the challenges for monitoring them. The study is part of a larger NCCOS-sponsored project whose goal is to identify bacteria capable of degrading microcystins and to develop an affordable and efficient water filtration system to house such microorganisms. Microcystins inhibit and […]

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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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Algal Toxins Pose Health Risk to Dogs

Harmful algal bloom (HAB) toxins, including microcystins, pose health threats and even death for dogs and other pets exposed to the contaminated water, explains a new educational brochure from the New York Sea Grant Program. The brochure, a product of a National Centers for Coastal Ocean Science sponsored research project in the Great Lakes, describes freshwater HABs and their […]

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