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Latest Ocean acidification Stories

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2009-01-19 08:10:00

A scientific voyage off Australia's southern coast has found new species of animals and more evidence of the destructive impact of the greenhouse gas carbon dioxide on deep-sea corals. The U.S. and Australian researchers explored a vertical slice in the earth's crust known as the Tasman Fracture Zone, which drops from approximately 1.2 miles to more 2.5 miles deep. "We set out to search for life deeper than any previous voyage in Australian waters," said Ron Thresher from Australia's...

2009-01-16 10:51:06

An international team of scientists has solved a mystery that has puzzled marine chemists for decades. They have discovered that fish contribute a significant fraction of the oceans' calcium carbonate production, which affects the delicate pH balance of seawater. The study gives a conservative estimate of three to 15 percent of marine calcium carbonate being produced by fish, but the researchers believe it could be up to three times higher.Published January 16th in Science, their findings...

2009-01-13 11:16:34

Madison, WI, January 12, 2009 "“ Following the Clean Air Act Amendments of 1970 and 1990 acidic deposition in North America has declined significantly since its peak in 1973. Consequently, research has shifted from studying the effects of acidic deposition to the recovery of these aquatic and terrestrial ecosystems. Regional-scale studies have focused primarily on aquatic systems and while many of these ecosystems are showing signs of chemical recovery (increases in acid neutralizing...

2008-12-18 15:48:24

Concern about increasing ocean acidification has often focused on its potential effects on coral reefs, but broader disruptions of biological processes in the oceans may be more significant, according to Donald Potts, a professor of ecology and evolutionary biology at the University of California, Santa Cruz, and an expert in coral reef ecology and marine biodiversity. Potts gave an invited talk on "Geobiological Responses to Ocean Acidification" at the Fall Meeting of the American...

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2008-12-16 15:21:00

Researchers say the elevated carbon dioxide levels expected to be found in the world's oceans by 2100 will likely lead to physiological impairments of jumbo (or Humboldt) squid. The squids' lifestyle could be strongly influenced by changes in ocean acidity, the researchers Wrote in the journal PNAS. Oceans are becoming more acidic as a result of absorbing the carbon dioxide released by human activities, according to climate models. Rises in acidity have already been shown to affect shellfish...

2008-12-12 15:19:11

Climate change is hampering the long-term recovery of rivers from the effects of acid rain, as wet weather counteracts improvements, according to a new study by Cardiff University. The research, by Professor Steve Ormerod and Dr Isabelle Durance of the School of Biosciences, took place over a 25 year period around Llyn Brianne in mid-Wales. Their findings are published online today in the British Ecological Society's Journal of Applied Ecology. Carried out in 14 streams, the research involved...

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2008-12-12 10:36:23

Researchers have discovered that the ocean's chemical makeup is less stable and more greatly affected by climate change than previously believed. The researchers report in the December 12, 2008 issue of Science that during a time of climate change 13 million years ago the chemical makeup of the oceans changed dramatically. The researchers warn that the chemical composition of the ocean today could be similarly affected by climate changes now underway "“ with potentially far-reaching...

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2008-11-25 08:15:00

Researchers now believe the ocean is growing more acidic faster than once thought, thanks to increasing levels of atmospheric carbon dioxide. University of Chicago scientists documented the phenomena in a paper published online in the Proceedings of the National Academy of Sciences. "Of the variables the study examined that are linked to changes in ocean acidity, only atmospheric carbon dioxide exhibited a corresponding steady change," said J. Timothy Wootton, the lead author of the study...

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2008-11-05 09:55:00

Imagine descending in a submarine to the ice-cold, ink-black depths of the ocean, 800 meters under the surface of the Atlantic. Here the tops of the hills are covered in large coral reefs. NIOZ-researcher Furu Mienis studied the formation of these unknown cold-water relatives of the better-known tropical corals. Furu Mienis studied the development of carbonate mounds dominated by cold-water corals in the Atlantic Ocean at depths of six hundred to a thousand meters. These reefs can be found...

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2008-10-28 11:20:00

New research in Australia has found disturbing new evidence to show that the world's coral reefs may be in more immediate danger than some experts previously considered. Australian scientists studied the effects of climate change and rising sea temperatures to find that these events may speed the process of coral bleaching, thus leading to the destruction of the world's reefs. "Previous predictions of coral bleaching have been far too conservative, because they didn't factor in the effect of...


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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