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Lecture Informs Public of Long Island’s Coastal Ills, Solutions

NCCOS-funded researcher Dr. Christopher Gobler and his students recently reported on the nearly complete collapse of hard clam fisheries in Great South Bay and bay scallop fisheries off the East End of Long Island due to annually occurring harmful algal blooms, hypoxia, and acidification. The team discovered excess nitrogen entering groundwater from septic tanks and […]

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Some Coastal Fish May be Able to Adapt to an Acidifying Environment

A new study shows that some coastal fish may be able to condition their offspring to tolerate seasonally acidifying environments, a result never shown before in wild fish populations. Researchers funded by NCCOS and NOAA’s Ocean Acidification Program sampled a wild, spawning population of Atlantic silversides, then combined this information with carbon dioxide exposure experiments […]

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Marine Shellfish Get a ‘One-Two Punch’ from Acidification and Low Oxygen

Recent research has shown that ocean acidification and low oxygen interact to harm early life stages of bay scallops (Argopecten irradians) and hard clams (Mercenaria mercenaria). The study, conducted by Stony Brook University and sponsored by NCCOS and NOAA’s Ocean Acidification Program, found that the combined effects of low pH (high acidity) and low oxygen […]

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Environmental Conditions Can Influence Development of Dermo Disease in Oysters

A recent NCCOS-sponsored study by the Smithsonian Institution showed that long-term exposure to daily fluctuations of hypoxia (low dissolved oxygen) increased Dermo disease (Perkinsus marinus) infection in previously uninfected eastern oysters. Surprisingly, daily-cycling pH (a measure of acidity) did not affect Dermo disease infection levels in conjunction with daily-cycling hypoxia or with continuous normal oxygen […]

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Ocean Sciences Meeting Highlights Results of Sponsored Research

The 2014 Ocean Sciences Meeting showcased the reach and extent of research sponsored by NCCOS, including coral reefs, harmful algal blooms, hypoxia, applying research to management solutions, and integrated ecosystem assessments. NCCOS staff and sponsored research scientists gave over 25 oral and poster presentations and co-chaired a special session on mapping, monitoring, and managing mesophotic […]

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Tackling Ocean Acidification in Maine

Ocean chemistry is rapidly changing due to rising levels of atmospheric carbon dioxide, which has increased the acidity of seawater worldwide. Ocean acidification can affect marine resources such as fish and shellfish and may be particularly acute in Gulf of Maine waters because low temperatures and runoff from the land can exacerbate acidic conditions. On […]

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Ocean Acidification Promotes Disruptive and Harmful Algal Blooms on Our Coasts

The general decline in ocean pH (i.e., more acidic conditions) from the increasing concentrations of carbon dioxide (CO2) is well documented. Also well documented are increased nutrients entering coastal waters often promoting excessive and ecosystem disruptive algae blooms, including harmful algal blooms. The decay of these coastal blooms promotes bacterial respiration resulting in increased CO2, […]

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NCCOS Research in Today’s Rapidly Changing Global Environment

Two national science conferences recently highlighted NCCOS research: The theme at the 7th Symposium on Harmful Algae in the United States (Oct. 27–31, 2013; Sarasota, FL) was harmful algal blooms (HABs) in a changing world, especially a more acidic one. NCCOS HAB scientists and sponsored researchers  organized, advised,  chaired sessions, and presented some 13 oral […]

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