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Projects

Hypoxia in Green Bay, Wisconsin: Biogeochemical Dy...

Hypoxia conditions have plagued the lower part of Lake Michigan’s Green Bay and the Fox River for decades. We know nutrients are contributing to the problem, and we are developing ...

Hypoxia Response to Nutrient Management in Narraga...

We are developing observational and modeling tools and analyses to help management agencies in Narragansett Bay, Rhode Island assess the efficacy of nutrient management controls on hypoxia (low dissolved oxygen) ...

Impacts of Hypoxia on Fish and Fisheries in the No...

To protect fisheries and support ecosystem-based resource management in the northern Gulf of Mexico, we are developing modeling tools that will evaluate and simulate how large-scale changes in forcing factors ...

Integrated Ecosystem Modeling of the Causes of Hyp...

The largest low oxygen (hypoxic) zone affecting the United States is in the northern Gulf of Mexico, adjacent to the Mississippi River. This “dead zone” in the Gulf of Mexico ...

LEOFS-Hypoxia: Operational Lake Erie Hypoxia Forec...

Deep waters of Lake Erie’s central basin have areas of low dissolved oxygen. Weather conditions can determine if this low oxygen (hypoxic) water will be taken up by treatment plants, ...

Mechanisms Controlling Hypoxia – Glider Applicatio...

We evaluated the use of gliders to improve Gulf of Mexico hypoxic zone monitoring. The efficacy of this technology was determined and we developed a comprehensive plan that integrates glider ...

Modeling Factors that Contribute to Harmful Algal ...

Harmful algal blooms that disrupt and degrade coastal aquatic ecosystems are occurring with greater frequency. We developed a model that shows these events are not only the result of nutrient ...

Modeling Hypoxia and Ecological Responses to Clima...

We are developing modeling tools that can be used to predict ecological responses to climate and nutrient input management in coastal systems. This project is part of NOAA’s Coastal Hypoxia ...

Modeling Impacts of Hypoxia in the Northern Gulf o...

We are determining the effects of hypoxia (low dissolved oxygen) on reproduction of fish (Atlantic croaker) throughout the northern Gulf of Mexico to accurately model population outcomes and to assess ...

Modeling Ocean Acidification in the Coastal Zone

Adding carbon dioxide (CO2) to seawater raises the acidity of seawater, which can adversely affect marine life and fisheries. Coastal waters receive both atmospheric CO2 and CO2 from water pollution, ...

News

New Short Film on Understanding Hypoxia: Dead Zone...

With funding from NCCOS, a short film, "Understanding Hypoxia: Dead Zones on the Pacific Coast", was produced by Oregon State Productions, a documentary film team at Oregon State University. The ...

Hypoxia Impacts Macrobenthic Organism Densities an...

Caption: Los Peñasquitos Lagoon, a low-inflow estuary near La Jolla, California with the estuary mouth open. Credit: Michelle Cordrey NCCOS-supported researchers compared macrobenthic organisms in two low-inflow estuaries in Southern ...

NOAA Coastal Hypoxia Research Program Announces FY...

The NCCOS Competitive Research Program is pleased to announce a Fiscal Year 2023 Notice of Funding Opportunity (NOFO) for its Coastal Hypoxia Research Program. This funding opportunity seeks to improve ...

New Publication Evaluates Chlorophyll-a Algorithms...

Map of the study area showing each monitoring station from the Chesapeake Bay Program used in this study. A new scientific paper describes methods for evaluating the efficacy of five ...

Smaller than Expected Summer 2022 ‘Dead Zone’ Meas...

(Top) Map of measured Gulf hypoxia zone, July 25 – August 1, 2022. Red area denotes 2 mg/L of oxygen or lower, the level which is considered hypoxic, at the ...

Third Gulf of Mexico Hypoxia Task Force Report to ...

The Gulf of Mexico is home to the largest annual hypoxic zone in the United States, an area of low oxygen which puts at risk valuable commercial and recreational fisheries ...

NOAA Forecasts An Average ‘Dead Zone’ for Gulf of ...

NCCOS scientists are forecasting this summer’s Gulf of Mexico hypoxic zone or “dead zone”—an area of low to no oxygen that can kill fish and other marine life— to be ...

Modeling Shows Nitrogen Reductions Have Decreased ...

Management actions since the mid-1980s have reduced nutrient inputs to Chesapeake Bay, resulting in a smaller, annual “dead zone” — an area in the bay that lacks the oxygen needed ...

Reef-Building Coral Species Differ in Tolerance to...

NCCOS-supported researchers investigating the effects of hypoxia (low oxygen) on threatened coral species discovered that some species have surprisingly high tolerance to declining ocean oxygen levels. While investigating staghorn coral ...

Products

Maps, Tools & Applications

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Data & Publications

Council Monitoring and Assessment Program (CMAP): Inventory of Existing Habitat and Water Quality Monitoring, and Mapping Metadata for the Gulf of Mexico Programs

Under the Resources and Ecosystem Sustainability, Tourist Opportunities, and Revived Economies of the Gulf Coast States Act of 2012 (RESTORE Act), the Gulf Coast Ecosystem Restoration Council (RESTORE Council or Council ) is required to report on the progress of ...

Dynamics and distribution of natural and human-caused coastal hypoxia

Water masses can become undersaturated with oxygen when natural processes alone or in combination with anthropogenic processes produce enough organic carbon that is aerobically decomposed faster than the rate of oxygen re-aeration. The dominant natural processes usually involved are photosynthetic ...

Ecosystem Metabolism

This chapter contains sections titled: Introduction; Basic Definitions and Concepts; Measuring Ecosystem Metabolism; Regulating Factors and Spatial/Temporal Patterns; Ecosystem Metabolism Case Studies; Cross?Ecosystem Comparisons; Metabolic Responses to Climate Change and Variability; Conclusions; Acknowledgments; References; Citing Literature ...

Effect of Changes in Dissolved Oxygen Concentrations on the Spatial Dynamics of the Gulf Menhaden Fishery in the Northern Gulf of Mexico

Declines in dissolved oxygen (DO) concentrations in aquatic environments can lead to conditions of hypoxia (DO ? 2 mg/L), which can directly and indirectly affect aquatic organisms. Direct effects include changes in growth and mortality; indirect effects include changes in ...

Effects of hypoxia exposure on hepatic cytochrome P450 1A (CYP1A) expression in Atlantic croaker: molecular mechanisms of CYP1A down-regulation

Hypoxia-inducible factor-? (HIF-?) and cytochrome P450 1A (CYP1A) are biomarkers of environmental exposure to hypoxia and organic xenobiotic chemicals that act through the aryl hydrocarbon receptor, respectively. Many aquatic environments heavily contaminated with organic chemicals, such as harbors, are also ...

Effects of Nutrient Enrichment In the Nation’s Estuaries: A Decade of Change

The National Estuarine Eutrophication Assessment (NEEA) is a tool for evaluating both current eutrophic condition and the effectiveness of management actions aimed at reducing eutrophic condition. Eutrophication is caused by excess nutrients and is expressed by symptoms such as increased ...

Effects of the Changjiang (Yangtze) River discharge on planktonic community respiration in the East China Sea

Planktonic communities tend to flourish on the western margins of the East China Sea (ECS) fueled by substrates delivered largely from the Changjiang River, the fifth largest river in the world. To study the effects of the Changjiang River discharge ...

Effects of Winds on stratification and circulation in a partially mixed estuary

Numerical experiments are conducted to investigate how axial winds affect stratification and circulation in the partially mixed estuary of Chesapeake Bay. In the absence of rotational effects, stratification in the estuary decreases following both down?estuary and up?estuary winds, but stratification ...

Erratum to: Synthesis in estuarine and coastal ecological research

A caveat in the concluding section of our paper states that it would be impossible to provide a comprehensive sample of synthesis case studies that reflects all the major research areas in estuarine and coastal science. In retrospect, however, we ...

Eutrophication-Driven Deoxygenation in the Coastal Ocean

Human activities, especially increased nutrient loads that set in motion a cascading chain of events related to eutrophication, accelerate development of hypoxia (lower oxygen concentration) in many areas of the world’s coastal ocean. Climate changes and extreme weather events may ...

General Pages

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NOAA Internship Opportunities

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