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Latest Ocean acidification Stories

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2010-12-05 07:05:00

The world's oceans are facing far-reaching implications for its marine biodiversity and food security, due to changes in their chemistries not seen in more than sixty million years, according to a new study released by the United Nations on Thursday. "Environmental Consequences of Ocean Acidification," published by the UN Environmental Program (UNEP), warns that some sea organisms including coral and shellfish will have an increasingly difficult time surviving, as acidification shrinks the...

2010-11-30 16:58:10

ASU study of endolithic cyanobacteria has implications for coral reefs and mussel aquaculture Geo-microbiologists from Arizona State University have solved a long-standing conundrum about how some photosynthetic microorganisms, endolithic cyanobacteria, bore their way into limestone, sand grains, mussel shells, coral skeletons and other substrates composed of carbonate. According to the lead investigator, ASU professor Ferran Garcia-Pichel, the answer to the mystery of what is "at the heart...

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2010-11-17 13:41:47

The U.S. Environmental Protection Agency (EPA) said states with coastal waters that are becoming more acidic because of carbon dioxide should list them as impaired under the Clean Water Act. The agency's memo recognizes carbon dioxide as not only an air pollutant but a water pollutant, and notes the serious impacts that ocean acidification can have on aquatic life. Ocean acidification refers to the decrease in the alkalinity of oceans, which is caused by the absorption of excess carbon...

fdfe2142dfa41ded535dd437801b1c971
2010-11-09 09:25:00

Univ. of Miami scientists illustrate threat of increased carbon dioxide to coral reproduction A new study led by scientists at the University of Miami Rosenstiel School of Marine and Atmospheric Science suggests that over the next century recruitment of new corals could drop by 73 percent, as rising CO2 levels turn the oceans more acidic. The research findings reveal a new danger to the already threatened Caribbean and Florida reef Elkhorn corals. "Ocean acidification is widely viewed as an...

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2010-11-01 06:25:00

'It is past time to get serious about measuring what's happening to the seas around us' The ocean surface is 30 percent more acidic today than it was in 1800, much of that increase occurring in the last 50 years - a rising trend that could both harm coral reefs and profoundly impact tiny shelled plankton at the base of the ocean food web, scientists warn. Despite the seriousness of such changes to the ocean, however, the world has yet to deploy a complete suite of available tools to monitor...

2010-10-23 01:33:28

Eutrophication of the Baltic Sea has clear negative effects, such as dead bottoms and massive blooms of cyanobacteria. But high plankton production can also have positive effects on acidification. Researchers at the University of Gothenburg, Sweden, have shown that it is possible to work out the aggregate effects of various environmental measures. "The environmental state of the Baltic Sea is affected by many different processes at the same time and on several different time scales....

2010-10-14 08:45:54

Projects address concern for acidifying marine ecosystems With increasing levels of carbon dioxide accumulating in the atmosphere and moving into marine systems, the world's oceans are becoming more acidic, scientists have shown. To address the growing concern for acidifying marine systems, the National Science Foundation (NSF) has awarded 21 grants under the Ocean Acidification theme of its Climate Research Investment. The awards are supported and managed by NSF's Office of Polar Programs,...

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2010-10-12 23:00:21

Contrary to some previous, highly publicized, reports, ocean acidification is not likely to worsen the hearing of whales and other animals, according to a Woods Hole Oceanographic Institution (WHOI) scientist who studies sound propagation in the ocean.Tim Duda, of WHOI's Applied Ocean Physics & Engineering Department, undertook a study in response to warnings that as the ocean becomes more acidic"”due to elevated levels of atmospheric carbon dioxide (CO2)--noise from ships will be...

2010-09-30 17:03:29

The future of the world's coral reefs in a time of dramatic change and increasing human pressures is the focus of a major scientific symposium in Canberra, Australia,on October 7 and 8, 2010. Leading marine scientists from Australia, Britain, the USA, Israel and other countries will report on the latest findings on the state of the world's reefs and their prospects for survival in the coming decades. "Coral Reefs in a Changing Environment" celebrates more than 80 years of Australian coral...

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2010-08-20 09:46:37

Emissions of carbon dioxide are causing ocean acidification as well as global warming. Scientists have previously used computer simulations to quantify how curbing of carbon dioxide emissions would mitigate climate impacts. New computer simulations have now examined the likely effects of mitigation scenarios on ocean acidification trends. They show that both the peak year of emissions and post-peak reduction rates influence how much ocean acidity increases by 2100. Changes in ocean pH over...


Latest Ocean acidification 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...

Reef0607
2012-04-03 17:24:13

Rice Coral, (Montipora capitata), also known as Pore Coral, is a species of stony coral in the Acroporidae family. It is found in the tropical north and central areas of the Pacific Ocean at depths down to 66 feet. It is common in the waters near Hawaii, especially where the sea is turbulent. This is a reef-building species that forms colonies. As it matures, it develops tree-like branches. Its corallites are tiny and well separated by a calcareous (calcium carbonate) skeleton. The walls...

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Word of the Day
cruet
  • A vial or small glass bottle, especially one for holding vinegar, oil, etc.; a caster for liquids.
This word is Middle English in origin, and ultimately comes from the Old French, diminutive of 'crue,' flask.
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