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Acid rain poses a previously unrecognized threat to Great Lakes sugar maples
Date:12/15/2011

like it'll be difficult for new seeds to replace the forest overstory in the future," she said "So the populations of sugar maples in this region could potentially decline."

The article is titled "Simulated N deposition negatively impacts sugar maple regeneration in a northern hardwood ecosystem." The other authors are Andrew J. Burton of Michigan Technological University, Alan F. Talhelm of the University of Idaho and Kurt S. Pregitzer of the University of Idaho.

Funding for the study has been provided by grants from the National Science Foundation and the U.S. Department of Energy's Division of Environmental Biology.

"The surprising results reported in this study are an example of the value of long-term research," said Saran Twombly, program director in the National Science Foundation's Division of Environmental Biology, which funded the work.

"Uncovering the unexpected link between nitrogen deposition and sugar maple seedling success depended on the ability to simulate increased nitrogen deposition year after year," Twombly said. "The manipulations used to reveal the details of this link could not have worked in other than a long-term study."


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Contact: Jim Erickson
ericksn@umich.edu
734-647-1842
University of Michigan
Source:Eurekalert  

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