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Projects

Biological Vulnerability to Hypoxia from Climate W...

This project will provide critical information and predictive tools to coastal managers for understanding how species will respond to changing hypoxia conditions from ongoing and projected warming in the Gulf ...

Causes and Consequences of Hypoxic Events in Low-i...

We are investigating the processes that lead to hypoxia in Southern California’s lagoons, and identifying its ecological impacts. These small estuaries, which have tidal inlets that can close to the ...

Coastal Ecosystem Susceptibility to Nutrient Pollu...

We studied the estuaries of the U.S. East Coast and Gulf of Mexico to determine which coastal areas are most vulnerable to changes in nutrient input. We modeled the environmental ...

Effects of Hypoxia and Warming on Zooplankton in C...

Arcatia tonsa is the dominant copepod in Chesapeake Bay and a critical food source for many fisheries species and a link between primary producers (phytoplankton) and upper trophic levels. Size ...

How Will Changing Temperature and Oxygen Condition...

We are supporting the application of coastal ocean models to determine the vulnerability of important species to changing temperature and oxygen in the California Current. This will enable coastal managers ...

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) ...

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, ...

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 ...

News

NCCOS-Supported Research Transitioning to Operatio...

Dungeness crab is Oregon’s most valuable single-species fishery. Photo Credit: Oregon Sea Grant. U.S. Integrated Ocean Observing System (IOOS) has awarded Oregon State University with an ocean technology transition grant ...

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 ...

NCCOS Partners with CERF ‘Rising Tides’- Contribut...

NCCOS sponsored and participated in the 2021 Coastal and Estuarine Research Federation (CERF) 26th Biennial Conference, which was held virtually on November 1-4 and November 8-11, 2021. NCCOS scientists and ...

Climate Change Likely to Worsen Impact of Urban Ru...

The downtown Los Angeles skyline. Credit Wikimedia Commons. An NCCOS-funded study found that nutrient-laden, urban runoff is fueling algal blooms in Southern California's coastal waters that are acidifying the water ...

NOAA Ecological Forecast Helps Solve Mystery in La...

Residents of several northeast Ohio Lake Erie towns were surprised by a strong, foul smell during the first days of September. The residents, fearing a dangerous gas leak, called their ...

Coral Bleaching May be Induced by Hypoxia

NCCOS-supported researchers found low oxygen (hypoxia) led to coral bleaching, mass coral mortality, and changes in the microbial community on a Caribbean coral reef. In 2017, hypoxia was detected on ...

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 ...

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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Data & Publications

A Reduced Complexity, Hybrid Empirical-Mechanistic Model of Eutrophication and Hypoxia in Shallow Marine Ecosystems

Numerical simulation models have a long history as research tools for the study of coastal marine ecosystems, and are increasingly being used to inform management, particularly related to nutrient-fueled eutrophication. Demand for modeling assessments is rapidly increasing, and managers need ...

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 ...

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 ...

Estuarine classification and response to nitrogen loading: Insights from simple ecological models

Estuaries exhibit a large range in their responses to nitrogen loadings determined in part by characteristics of the driver, such as magnitude and frequency, but also by such intrinsic characteristics as physical/chemical factors (e.g., depth, volume, hypsometry, salinity, turbidity) and ...

Evaluating confidence in the impact of regulatory nutrient reduction on Chesapeake Bay water quality

Excess nutrients derived from anthropogenic activity have resulted in the degradation of coastal water quality and an increase in low-oxygen and hypoxic events worldwide. In an effort to curb these impacts and restore water quality in the Chesapeake Bay, a ...

Evaluation of Lower Green Bay benthic fauna with emphasis on re-ecesis of Hexagenia mayfly nymphs

The last historic Hexagenia specimen in lower Green Bay was officially recorded in 1955. Field surveys and Hexagenia viability studies were completed to determine if lower Green Bay could support Hexagenia re-ecesis and where in the bay egg stocking could ...

Evidence of persistent, recurring summertime hypoxia in Green Bay

Six years (2009–2015) of temperature and dissolved oxygen profile data show hypoxic conditions are common in the bottom waters of southern Green Bay, Lake Michigan during the summer. Depleted oxygen concentrations (<5 mg L−1) affect nearly 70% of the 38 ...

Exploring estuarine eutrophication sensitivity to nutrient loading

The sensitivity of surface chlorophyll (Chl) and bottom water dissolved oxygen (DO) to total nitrogen (TN) load was investigated using a Bayesian?based process model fit to data from a range of estuaries. The model was used to test if the ...
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