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Latest Biological oceanography Stories

56b9293463c6c936a29f39ba7f7282891
2011-03-20 06:44:28

Research can help assess impacts of climate change, other threats to coral reef ecosystems University of Miami (UM) Rosenstiel School of Marine & Atmospheric Science scientist Chris Langdon and colleagues developed a new tool to monitor coral reef vital signs. By accurately measuring their biological pulse, scientists can better assess how climate change and other ecological threats impact coral reef health worldwide. During a March 2009 experiment at Cayo Enrique Reef in Puerto Rico, the...

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2011-03-05 11:43:55

Ongoing climate-driven changes to the Arctic sea-ice could have a significant impact on the blooming of tiny planktonic plants (phytoplankton) with important implications for the Arctic ecosystem, according to new research conducted by scientists at the UK's National Oceanography Centre (NOC)."Ice-edge phytoplankton blooms in the Arctic Ocean provide food for planktonic animals called zooplankton, which are in turn exploited by animals higher up the food chain such as fish," explained Dr...

c84bdfc10f2d949b3a01b39ea55114321
2011-03-03 12:27:56

Phytoplankton peak arising up to 50 days early, with unknown impacts on marine food chain and carbon cycling Warming temperatures and melting ice in the Arctic may be behind a progressively earlier bloom of a crucial annual marine event, and the shift could hold consequences for the entire food chain and carbon cycling in the region. Scientists at Scripps Institution of Oceanography at UC San Diego, along with colleagues in Portugal and Mexico, plotted the yearly spring bloom of...

e506ad9e9ea99fb85389e70e874db45c
2011-03-01 10:04:36

Diatoms account for a large proportion of the phytoplankton found in the water, and live both in the open sea and in freshwater lakes. By reviving 100-year-old spores that had laid buried and inactive in bottom sediment, researchers at the University of Gothenburg, Sweden, have shown that diatoms are also genetically stable and survival artists. Recent research has shown that diatoms exhibit great genetic differences and that they occur in discrete populations, which means that they multiply...

2011-02-24 23:36:31

Adding particles to liquids to make currents visible is a common practice in the study of fluid mechanics, one that was adopted and perfected by artist Paul Matisse in sculptures he calls Kalliroscopes. Matisse's glass-enclosed liquid sculptures contain an object whose movement through the liquid creates whorls that can be seen only because elongated particles trailing the object align with the direction of the current; light reflects off the particles, making the current visible to the...

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....

8acb4bd5e5fffbb8899186a5c5b52a321
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...

f58707dd0c2ac65ac66894d2897daae91
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...

960f28281ad2a9a627fdf3152a8575641
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...


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...

45_9dcdfc9da62991a8f200f2f82f8638d9
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...

39_6e87e3fa1b5a996861bc65cc76c916fa
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
toccata
  • In music, a work for a keyboard-instrument, like the pianoforte or organ, originally intended to utilize and display varieties of touch: but the term has been extended so as to include many irregular works, similar to the prelude, the fantasia, and the improvisation.
This word is Italian in origin, coming from the feminine past participle of 'toccare,' to touch.
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