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News

Coastal Ocean Acidification: The Other Eutrophicat...

Northeast U.S. coastal areas experiencing low oxygen and acidic conditions. (Courtesy C. Gobler, SUNY Stony Brook) Eutrophication, or increased nutrient loading to estuaries, causes algae to bloom and consequently coastal ...
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Declining Oxygen Levels Threaten Oysters in Chesap...

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 ...
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Puget Sound Stakeholders See Value in HAB Forecast...

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 ...
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Volunteers Enhance the Living Shoreline of Rachel ...

A group of enthusiastic volunteers helped plant Spartina alterniflora, or salt marsh cordgrass, at the Rachel Carson Reserve, a component of the North Carolina National Estuarine Research Reserve in Beaufort, ...
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Sea Level Rise Could Drown Some North Carolina Sal...

Natural fringing marshes in Carteret County, N.C., may not be able to keep up with sea level rise. A recent study shows that, over the last 10 years, these marshes ...
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NOAA Expertise Leads ‘Beneath the Waves̵...

"Saving North Carolina's Reefs" - one of the film shorts shown at the "Beneath the Waves" Film Festival - highlights North Carolina oyster reef research. North Carolina -based scientists were ...
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Study Describes Social-ecological System of La Par...

A new study describes the social-ecological system of La Parguera, Puerto Rico, and identifies the different pressures that have changed this system over the last 40 years. According to the ...
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Lecture Informs Public of Long Island’s Coas...

Populations of bay scallops have declined in Long Island's coastal bays. Credit: NOAA. NCCOS-funded researcher Dr. Christopher Gobler and his students recently reported on the nearly complete collapse of hard ...
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Some Coastal Fish May be Able to Adapt to an Acidi...

A new study shows that some coastal fish may be able to condition their offspring to tolerate seasonally acidifying environments, a result never shown before in wild fish populations. Experiments ...
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NOAA Data Support Groundwater Protection in Marsha...

Scientists from the National Centers for Coastal Ocean Science (NCCOS) and the Coastal Services Center recently recorded underwater video and collected sonar data off Kwajalein Atoll in the Republic of ...
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Data & Publications

Tidal hydrodynamics under future sea level rise and coastal morphology in the Northern Gulf of Mexico

This study examines the integrated influence of sea level rise (SLR) and future morphology on tidal hydrodynamics along the Northern Gulf of Mexico (NGOM) coast including seven embayments and three ecologically and economically significant estuaries. A large-domain hydrodynamic model was ...
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Transgenerational exposure of North Atlantic bivalves to ocean acidification renders offspring more vulnerable to low pH and additional stressors

While early life-stage marine bivalves are vulnerable to ocean acidification, effects over successive generations are poorly characterized. The objective of this work was to assess the transgenerational efects of ocean acidifcation on two species of North Atlantic bivalve shellfsh, Mercenaria ...
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U.S. Shrimp Market Integration

Recent supply shocks in the Gulf of Mexico—including hurricanes, the Deepwater Horizon oil spill, and the seasonal appearance of a large dead zone of low oxygen water (hypoxia)—have raised concerns about the economic viability of the U.S. shrimp fishery. The ...
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Using Multiple Watershed Models to Predict Water, Nitrogen, and Phosphorus Discharges to the Patuxent Estuary

We analyzed an ensemble of watershed models that predict flow, nitrogen, and phosphorus discharges. The models differed in scope and complexity and used different input data, but all had been applied to evaluate human impacts on discharges to the Patuxent ...
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Variability of biogeochemical processes and physical transport in a partially stratified estuary: a box-modeling analysis

Regional, seasonal, and interannual variations of freshwater inputs, biogeochemical transformations, and pelagic-benthic interactions were examined in the Patuxent River estuary. Monthly rates of net biogeochemical production (or consumption) and physical transport of carbon, oxygen, and nutrients were calculated for 6 ...
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Variations in chemical speciation and reactivity of phosphorus between suspended-particles and surface-sediment in seasonal hypoxia-influenced Green Bay

Water, suspended-particles, and surface-sediment samples were collected from Green Bay, Lake Michigan, for the measurements of phosphorus (P) species, including dissolved/particulate-P, inorganic/organic-P, and five different forms of particulate-P, namely exchangeable- or labile-P (Ex-P), iron-bound-P (Fe-P), biogenic-apatite and/or CaCO3-associated-P (CFA-P), organic-P ...
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Vulnerability of early life stage Northwest Atlantic forage fish to ocean acidification and low oxygen

Global oceans are undergoing acidification and deoxygenation, yet the concurrent effects of low oxygen and acidification on marine fish are unknown. This study quantified the separate and combined effects of low pH and low oxygen on 4 vital early life-history ...
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Wind-driven lateral circulation in a stratified estuary and its effects on the along-channel flow

In the stratified rotating estuary of Chesapeake Bay, the Ekman transport drives a counterclockwise lateral circulation under down?estuary winds and a clockwise lateral circulation under up?estuary winds (looking into estuary). The clockwise circulation is about twice as strong as the ...
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