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Science chief warns on acid oceans

RATE THIS! +10
Posted in Science on 25th Oct, 2014 12:31 AM by AlexMuller

The UK's chief scientist says the oceans face a serious risk from man-made carbon emissions. The oceans absorb about a third of the CO2 that’s being produced by society, and this is changing the chemistry of seawater. Sir Mark Walport warns that the acidity of the oceans has increased by about 25% since the industrial revolution, mainly thanks to manmade emissions.

 
He told BBC News: “If we carry on emitting CO2 at the same rate, ocean acidification will create substantial risks to complex marine food webs and ecosystems.” He said the current rate of acidification is believed to be unprecedented within the last 65 million years, and may threaten fisheries in future.
 
The consequences of acidification are likely to be made worse by the warming of the ocean expected with climate change, a process which is also driven by CO2. Sir Mark’s comments come as recent British research suggests the effects of acidification may be even more pervasive than previously estimated. Until now studies have identified species with calcium-based shells as most in danger from changing chemistry.
 
But researchers in Exeter have found that other creatures will also be affected because as acidity increases it creates conditions for animals to take up more coastal pollutants like copper.

Tags: oceanacidfishCO2carbonpollutionsea

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