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Projects

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 ...
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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, ...
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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 ...
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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 ...
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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 ...
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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 ...
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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, ...
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National Estuarine Eutrophication Assessment: Upda...

Eutrophication is the overabundance of nutrients in a body of water that results in harmful algal blooms, fish kills, and in some cases ecosystem collapse. We used the Assessment of ...
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Operational Gulf of Mexico Hypoxia Monitoring

The Gulf of Mexico hypoxia monitoring cruise is an annual shelf-wide survey of the Gulf's hypoxic area (i.e., “dead zone”) and the survey is the metric used by the interagency ...
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Oyster Aquaculture Related Ecosystem Services in t...

Eutrophication—the overabundance of nutrients in a body of water—threatens the normal function and benefits provided by coastal ecosystems. Attempts to reverse eutrophication have focused on reducing land-based sources of nutrients ...
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News

Bacterial Removal of Nitrogen, Methane from Gulf D...

NCCOS-supported researchers have determined the natural removal rates of nitrogen and the potent greenhouse gas methane from Louisiana's coastal waters. The study investigated patterns of pelagic denitrification (bacterial conversion of ...
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Building Partnerships to Track Hypoxia in Marine E...

Smart dissolved oxygen sensor deployed on spot prawn traps by WA Department of Fish and Wildlife (DFW) managers as part of the Puget Sound pre-season fishery survey. Credit WA DFW ...
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NOAA Forecasts Average ‘Dead Zone’ for Gulf of Mex...

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 ...
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Temperature and Oxygen Tolerances of Marine Specie...

NCCOS-supported researchers found that marine organism geographic distributions are best predicted by measuring temperature and dissolved oxygen together. Temperature and oxygen are closely linked in the physiology of marine animals ...
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Fishing for Hypoxia

A recovered crab pot with a dissolved oxygen sensor. Photo Credit: Pat Kemmish, F/V Richard H. A newly published article in Sea Technology highlights the power of collaborative research between ...
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Hypoxia in Tropical Marine Ecosystems, the Underst...

A recent review article by NCCOS-supported researchers assessing the state of knowledge of hypoxia (low oxygen) in tropical ecosystems finds little information in comparison to what is known about hypoxia ...
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Impacts of Hypoxia on Marine Life Neglected, Thoug...

Map shows coastal sites where anthropogenic nutrients have exacerbated or caused oxygen declines to <2 mg/L (red dots), as well as ocean oxygen-minimum zones at 300 meters of depth (blue ...
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Third Advisory Panel Workshop on Hypoxia Effects o...

The third Advisory Panel Workshop on Hypoxia Effects of Fish and Fisheries was held virtually on December 14, 2020 as part of an NCCOS NGOMEX project led by Dr. Kim ...
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NCCOS-supported Research Aids Site Selection for C...

NCCOS-supported researchers from the University of Florida and Smithsonian Marine Station paired water quality sensors with coral outplants to develop data-driven criteria for selection of restoration sites in the Florida ...
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Combining Geostatistical and Mechanistic Models Im...

NCCOS-sponsored scientists combined two traditional, but often separate, modeling approaches to better characterize, track, and predict coastal hypoxia in the northern Gulf of Mexico. Their study found that “fused” geostatistical ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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General Pages

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NOAA Internship Opportunities

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