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Organic carbon suggests Swedish lakes were less acidified
Date:7/31/2011

on emissions. Studies of sediments in some of the lakes seem to bear out the idea that preindustrial organic carbon levels were at least as high as they are todayand considerably higher than they were in 1990. That in turn means the power station emissions did not contribute as much to lake acidification as was thought when liming programs were instigated.

Erlandsson and his coauthors say their work does not call into question the value of reducing power station emissions generally, since this has had many other benefits besides improving the condition of lakes. But they comment that their work does emphasize the importance of getting a better understanding of the amounts of dissolved organic carbon in lakes in pre-industrial times, because they have a large influence on the degree of acidification that can be blamed on power station emissions.


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Contact: Tim Beardsley
tbeardsley@aibs.org
703-654-2500 x326
American Institute of Biological Sciences
Source:Eurekalert

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