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News

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 ...

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 ...

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 ...

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, ...

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 ...

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 ...

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 ...

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 ...

Large ‘Dead Zone’ Measured in Gulf of Mexico

Dr. Nancy Rabalais (at left) and crew, aboard R/V Pelican, prepare to deploy a conductivity, temperature, and depth (CTD) carousel (rosette) containing an array of Niskin water sampling bottles. The ...

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Data & Publications

Linking Coasts and Seas to Address Ocean Deoxygenation

Accelerated oxygen loss in both coastal and open oceans is generating complex biological responses; future understanding and management will require holistic integration of currently fragmented oxygen observation and research programmes ...

Long-term decline in the calanoid copepod Acartia tonsa in central Chesapeake Bay, USA: An indirect effect of eutrophication

A long-term abundance record of the calanoid copepod Acartia tonsa in the Maryland portion of Chesapeake Bay was compiled from 1966 to 2002. A significant downward trend in the summertime abundance of Acartia tonsa was found in central Chesapeake Bay ...

Long-term trends in Chesapeake Bay seasonal hypoxia, stratification, and nutrient loading

A previously observed shift in the relationship between Chesapeake Bay hypoxia and nitrogen loading has pressing implications on the efficacy of nutrient management. Detailed temporal analyses of long-term hypoxia, nitrogen loads, and stratification were conducted to reveal different within-summer trends ...

Louisiana Hypoxia Survey 2009: Biological, chemical, and physical data collected off the coast of Louisiana as part of the Hypoxia Studies in the Northern Gulf of Mexico project in 2009 (NODC Accession 0099531)

CTD data were taken during the 2009 surveys of the Louisiana continental shelf. Hydrographic data were obtained with the LUMCON SeaBird 911+ CTD system and a YSI 6820. Nutrient, pigment, suspended sediment, surface salinity, secchi depth, and station information data ...

Louisiana Hypoxia Surveys 1998 - 2002: Physical, biological, and chemical data collected off the coast of Louisiana as part of a long-term study of hypoxia (NODC Accession 0002033)

The physical, biological and chemical data collected are part of a long-term coastal Louisiana dataset. The goal is to understand physical and biological processes that contribute to the causes of hypoxia and use the data to support environmental models for ...

Louisiana Hypoxia Surveys 2003: Biological, chemical, and physical data collected off the coast of Louisiana as part of the Hypoxia Studies in the Northern Gulf of Mexico project in 2003 (NODC Accession 0020956)

Biological, chemical, and physical data collected off the coast of Louisiana as part of the Hypoxia Studies in the Northern Gulf of Mexico project in 2003 ...

Louisiana Hypoxia Surveys 2004: Biological, chemical, and physical data collected off the coast of Louisiana as part of the Hypoxia Studies in the Northern Gulf of Mexico project in 2004 (NODC Accession 0032050)

Biological, chemical, and physical data collected off the coast of Louisiana as part of the Hypoxia Studies in the Northern Gulf of Mexico project in 2004 ...

Louisiana Hypoxia Surveys 2005: Biological, chemical, and physical data collected off the coast of Louisiana as part of the Hypoxia Studies in the Northern Gulf of Mexico project in 2005 (NODC Accession 0039733)

Biological, chemical, and physical data collected off the coast of Louisiana as part of the Hypoxia Studies in the Northern Gulf of Mexico project in 2005 ...

Louisiana Hypoxia Surveys 2006: Biological, chemical, and physical data collected off the coast of Louisiana as part of the Hypoxia Studies in the Northern Gulf of Mexico project in 2006 (NODC Accession 0049435)

Biological, chemical, and physical data collected off the coast of Louisiana as part of the Hypoxia Studies in the Northern Gulf of Mexico project in 2006 ...

Louisiana Hypoxia Surveys 2007: Biological, chemical, and physical data collected off the coast of Louisiana as part of the Hypoxia Studies in the Northern Gulf of Mexico project in 2007 (NODC Accession 0060060)

Biological, chemical, and physical data collected off the coast of Louisiana as part of the Hypoxia Studies in the Northern Gulf of Mexico project in 2007 ...

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