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News

Lake Erie Hypoxia Forecast Helps Treatment Plant O...

Low dissolved oxygen (hypoxia) in a water body can certainly harm aquatic life, but it can also create problems for water treatment plant operators. Personnel have to respond quickly when ...
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Oxygen Loss and Ecosystem Impacts in the Californi...

Aerobic habitat compression for anchovy. Aerobic habitat compression in 2100 compared to 2000. Areas in red will lose the most habitat suitable for anchovy. Circles are anchovy observations, with larger ...
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NCCOS Monitoring Cyanobacterial Blooms in Lake Pon...

The Bonnet Carré Spillway is a flood control operation designed to divert the nutrient-rich waters of the Mississippi River into Lake Pontchartrain when river water levels get too high, in ...
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Model Combines Reduced Nutrients, Increased Temps ...

A team of NCCOS sponsored scientists have enhanced a hypoxia model with an unprecedented, multi-decadal oceanographic dataset to predict the combined effects of reduced nutrient loading, increased temperature, and freshwater ...
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Hypoxia Study Shows Fish Diet and Catchability Cha...

NCCOS sponsored research on hypoxia (low oxygen concentrations within the water column) finds that hypoxic conditions in the northern Gulf of Mexico have variable effects on fish diet, food webs, ...
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Smaller, More User-friendly Sensor Developed to De...

NCCOS-supported scientists and engineers have developed a smaller and more user-friendly low cost sensor that fishermen can use to detect and track the onset of low oxygen events off the ...
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Student-developed Sensor Used to Measure Impacts o...

NCCOS-supported scientists are using a new technology developed by undergraduate students at the University of California, San Diego to measure the impacts of low oxygen (hypoxia) on oysters living in ...
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Florida Event Response Funding Helps Jump-Start Ci...

A relatively small, one-time NCCOS funding contribution to aid the study of red tide off southwest Florida has helped produce an unexpected long-term benefit – the establishment of a citizen ...
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Testing the Feasibility of Robotic Gliders to Moni...

NCCOS has evaluated the use of underwater gliders to improve Gulf of Mexico hypoxic zone, also known as the dead zone, monitoring. This effort resulted in the development of a ...
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Products

Maps, Tools & Applications

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Data & Publications

Hypoxia-induced shifts in nitrogen and phosphorus cycling in Chesapeake Bay

We investigated interactions between hypoxia and nutrient cycling in Chesapeake Bay using quantitative analysis of long?term monitoring data covering the periods 1965?1980 and 1985?2007. The data included vertical water column profiles of temperature, salinity, NH+4, PO3?4, and O2, as well ...
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Improving methods and indicators for evaluating coastal water eutrophication: A pilot study in the Gulf of Maine

Study Goals and Objectives: 1) Improve existing nutrient-related eutrophication assessment methods, updating (from early 1990s to early 2000s) the eutrophication assessment for systems included in the study with the improved method. 2) Develop a human-use/socioeconomic indicator to complement the assessment ...
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In situ, high-resolution time series of dissolved phosphate in Green Bay, Lake Michigan

In nearly every instance in which the environment has been sampled on a higher resolution in time or space, fundamental processes have come to light that were previously undetected or unobserved. In this study, an autonomous dissolved phosphate sensor was ...
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Integrated Assessment on Hypoxia in the Gulf of Mexico, Topic 1 Report: Characterization of Hypoxia

As part of a process of considering options for responding to hypoxia, the U.S. Environmental Protection Agency (EPA) formed the Mississippi River/Gulf of Mexico Watershed Nutrient Task Force during the fall of 1997, and asked the White House Office of ...
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Integrated Assessment on Hypoxia in the Gulf of Mexico, Topic 2 Report: Ecological and Economic Consequences of Hypoxia

As part of a process of considering options for responding to hypoxia, the U.S. Environmental Protection Agency (EPA) formed the Mississippi River/Gulf of Mexico Watershed Nutrient Task Force during the fall of 1997, and asked the White House Office of ...
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Integrated Assessment on Hypoxia in the Gulf of Mexico, Topic 3 Report: Flux and Sources of Nutrients in the Mississippi-Atchafalaya River Basin

As part of a process of considering options for responding to hypoxia, the U.S. Environmental Protection Agency (EPA) formed the Mississippi River/Gulf of Mexico Watershed Nutrient Task Force during the fall of 1997, and asked the White House Office of ...
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Integrated Assessment on Hypoxia in the Gulf of Mexico, Topic 4 Report: Effects of Reducing Nutrient Loads to Surface Waters within the Mississippi River Basin and the Gulf of Mexico

As part of a process of considering options for responding to hypoxia, the U.S. Environmental Protection Agency (EPA) formed the Mississippi River/Gulf of Mexico Watershed Nutrient Task Force during the fall of 1997, and asked the White House Office of ...
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Integrated Assessment on Hypoxia in the Gulf of Mexico, Topic 5 Report: Reducing Nutrient Loads, Especially Nitrate-Nitrogen, to Surface Water, Ground Water, and the Gulf of Mexico

As part of a process of considering options for responding to hypoxia, the U.S. Environmental Protection Agency (EPA) formed the Mississippi River/Gulf of Mexico Watershed Nutrient Task Force during the fall of 1997, and asked the White House Office of ...
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Integrated Assessment on Hypoxia in the Gulf of Mexico, Topic 6 Report: Evaluation of the Economic Costs and Benefits of Methods for Reducing Nutrient Loads to the Gulf of Mexico

As part of a process of considering options for responding to hypoxia, the U.S. Environmental Protection Agency (EPA) formed the Mississippi River/Gulf of Mexico Watershed Nutrient Task Force during the fall of 1997, and asked the White House Office of ...
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Landscape-Level Variation in Disease Susceptibility Related to Shallow-Water Hypoxia

Diel-cycling hypoxia is widespread in shallow portions of estuaries and lagoons, especially in systems with high nutrient loads resulting from human activities. Far less is known about the effects of this form of hypoxia than deeper-water seasonal or persistent low ...
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