ocean acidity | Indymedia Australia

ocean acidity

Marine extinction looms with ocean acidification increasing

Submitted by takver on Sun, 21/02/2010 - 5:00pm

Scientiists from Bristol University say that ocean acidification is ocurring at a faster pace than anytime in the last 65 million years, raising the possibility of a mass marine extinction event similar to what ocurred about 55 million years ago.

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Scientist: Extinction threatens coral reefs unless CO2 limited to 350ppm

Submitted by takver on Thu, 10/12/2009 - 2:31pm

COPENHAGEN. Dec 9, 2009. Extinction of Coral reefs and 10-20% of marine species is likely if greehouse gases aren't brought down to 350ppm, warned Professor Ove Hoegh-Guldberg from the University of Queensland. He gave a presentation (audio 14mins 19s) at the US Pavilion at the COP15 climate negotiations in Copenhagen about the threat of climate change to the world's coral reefs. Over 500 million people living in approximately 90 nations are dependant in some way on coral reefs.

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Marine Scientists call for climate action over Ocean Warming and Acidification

Submitted by takver on Sat, 28/11/2009 - 9:42pm

A Marine Climate Change reportcard released by Australian Scientists has warned that: ocean temperatures have warmed; the flow of the East Australian Current has strengthened, and will likely increase a further 20% by 2100; Marine biodiversity is changing in south-east Australia in response; and declines of over 10% in growth rates of massive corals on the Great Barrier Reef are likely due to ocean acidification and thermal stress.

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Scientists call for emissions slashed to save Great Barrier Reef

Submitted by takver on Wed, 18/11/2009 - 1:08am

Marine and climate scientists have called for at least a 25% cut in carbon emissions from developed countries like Australia to save the Great Barrier Reef. A 25% cut in emissions would amount to peaking at less than 450ppm atmospheric CO2 and a 50/50 chance of staying below 2 degrees Centigrade. And by 2050, emissions would have to decline by up to 90 percent below 2000 levels. Even with this scenario tropical reefs may be substantially degraded.

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