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Latest Biological oceanography Stories

2011-02-24 15:32:28

Researchers conduct first-ever genetic sequencing of harmful algal blooms A team involving University of Tennessee, Knoxville, researchers has conducted the first-ever genetic sequencing of a harmful algal bloom (HAB) species, cracking the genome of the micro-organism responsible for the Eastern Seaboard's notorious brown tides. Brown tides decimated the scallop industries of New York and New Jersey in the 1980s and 1990s and continue to plague the waters off North America and South Africa....

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2011-02-24 09:10:00

Warming seas, rising levels of atmospheric carbon dioxide and other factors such as over-fishing could wipe out the world's coral reefs by 2050 unless urgent action is taken to counteract these threats, environmental advocates warned on Wednesday. More than three quarters of all reefs are currently threatened, said advocates from U.S. government and non-governmental organizations while releasing the report entitled, "Reefs at Risk Revisited." Swift action must be taken to protect these...

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2011-02-22 09:34:26

By Pam Frost Gorder, Ohio State University Researchers studying the origin of Earth's first breathable atmosphere have zeroed in on the major role played by some very unassuming creatures: plankton. In a paper to appear in the online Early Edition of the Proceedings of the National Academy of Sciences (PNAS), Ohio State University researcher Matthew Saltzman and his colleagues show how plankton provided a critical link between the atmosphere and chemical isotopes stored in rocks 500 million...

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2011-02-21 15:23:19

For the first time, researchers have sequenced the genome of a harmful algal bloom species. Researchers found that Aureococcus' unique gene complement allows it to outcompete other marine phytoplankton and thrive in human-modified ecosystems, which could help explain the global increases in harmful algal blooms. The brown tides caused by Aureococcus do not produce toxins that poison humans, but the long-lasting blooms are toxic to bivalves and have decimated sea grass beds leading to...

2011-02-20 21:50:51

New studies demonstrate potential increases in waterborne toxins and microbes A panel of scientists speaking today at the annual meeting of the American Association for the Advancement of Science (AAAS) unveiled new research and models demonstrating how climate change could increase exposure and risk of human illness originating from ocean, coastal and Great Lakes ecosystems, with some studies projecting impacts to be felt within 30 years. "With 2010 the wettest year on record and third...

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2011-02-20 07:05:00

US scientists, speaking at the annual meeting of the American Association for the Advancement of Science (AAAS) in Washington Saturday, said climate change could increase exposure to water-borne diseases originating in the world's oceans, lakes and coastal ecosystems, adding that the impact will most likely be felt within the next 30 years, and as early as the next 10 years. Numerous studies have shown that shifts from climate change make ocean and freshwater ecosystems more susceptible to...

2011-02-17 08:43:40

(Ivanhoe Newswire) "“ Blue-green algae may be responsible for producing an estrogen-like compound in the environment which could disrupt the normal activity of reproductive hormones and adversely affect fish, plants, and human health. Previously, human activities were thought to be responsible for producing these impacts. Researchers looked into blue-green algae and their effects on zebrafish. They discovered the algae may add a new harmful element into the way they understand and...

2011-02-16 16:40:17

Scientists are reporting for the first time that previously unrecognized substances released by algae blooms have the potential to act as endocrine disruptors, which can interfere with the normal activity of reproductive hormones. The effect is not caused by microcystin toxins, long recognized as potentially harmful to humans and aquatic animals, but as yet unidentified substances. As a result, the scientists are calling for a revision of environmental monitoring programs to watch for these...

2011-02-16 12:58:47

University of Tennessee, Knoxville, researchers have found that blue-green algae may be responsible for producing an estrogen-like compound in the environment which could disrupt the normal activity of reproductive hormones University of Tennessee, Knoxville, researchers have found that blue-green algae may be responsible for producing an estrogen-like compound in the environment which could disrupt the normal activity of reproductive hormones and adversely affect fish, plants and human...

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2011-02-09 11:40:00

Our growing reliance on coastal waters for food, trade and tourism means that these delicate ecosystems need to be more closely monitored to guarantee their future sustainability. ESA's CoastColour project is helping scientists develop techniques to take full advantage of the unique capabilities of the Medium Resolution Imaging Spectrometer (MERIS) sensor on its Envisat satellite. With a resolution of 300 m, MERIS provides the sharpest view of coastal waters to date, and includes spectral...


Latest Biological oceanography Reference Libraries

Ocean Acidification
2013-04-01 10:32:20

Ocean acidification is the name that was given to the ongoing decrease in the pH of Earth’s oceans, a cause of the uptake of anthropogenic carbon dioxide from the atmosphere. About 30 to 40 percent of the carbon dioxide that is released by humans into the atmosphere dissolves into the lakes, oceans, and rivers. To maintain the chemical equilibrium, some of it reacts with the water to create carbonic acid. Some of these extra carbonic acid molecules react with a water molecule to provide a...

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2014-01-12 00:00:00

A salp is a barrel-shaped, free-floating tunicate (any living organism which has a saclike body enclosed in a thick membrane or tunic with two openings or siphons for the ingress and egress of water). It moves by contracting which pumps water through its body. The salp strains the water with internal feeding filters as it goes through the body. It consumes phytoplankton that are strained from the water. Salps are common throughout equatorial, temperate, and colder seas. They are most often...

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2007-04-03 00:34:20

The South American pilchard, Sardinops sagax, is a sardine of the Family Clupeidae, the only member of the genus Sardinops, found in the indo-Pacific oceans. Their length is up to 15.75 in (40 cm). It has a number of other common names: Australian pilchard, Blue pilchard, Blue-bait, Californian pilchard, Chilean sardine, Japanese pilchard, Pacific sardine, and Southern African pilchard. The South American pilchard is a coastal species that forms large schools. Coloration is blue green on...

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Word of the Day
omadhaun
  • A fool; a simpleton: a term of abuse common in Ireland and to a less extent in the Gaelic-speaking parts of Scotland.
This word is partly Irish in origin.