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Posted Mon Mar 9 2009: from
Reuters:
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Rising ocean acidity cutting shell weights - study http://apocadocs.com/s.pl?1236616113
Acidifying oceans caused by rising carbon dioxide levels are cutting the shell weights of tiny marine animals in a process that could accelerate global warming, a scientist said on Monday.
William Howard of the University of Tasmania in Australia described the findings as an early-warning signal, adding the research was the first direct field evidence of marine life being affected by rising acidity of the oceans.
Oceans absorb large amounts of CO2 emitted by mankind through the burning of fossil fuels. The Southern Ocean between Australia and Antarctica is the largest of the ocean carbon sinks.
But scientists say the world's oceans are becoming more acidic as they absorb more planet-warming CO2, disrupting the process of calcification used by sea creatures to build shells as well as coral reefs.
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[Read more stories about:
climate impacts, massive die-off, ocean acidification, ocean warming]
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