Carbon dioxide maker


  • Anonymous


“The world's lakes are sources, rather than sinks, for atmospheric CO2,” George W. Kling of the University of Michigan reports in the September 9 issue of Science. On the basis of data from an assortment of more than 1800 lakes, the Michigan biologist and his colleagues found that nearly 90% of all lakes had carbon dioxide concentrations that were on average threefold greater than those of the surrounding atmosphere. Traditionally, many scientists have believed that lakes soak up atmospheric CO2—not pump it back into the atmosphere. This finding may indicate that land plants and soils play an important role in regulating lake ecosystems, Kling says, though the precise mechanism for the carbon transfer remains unknown.