Science to restore the nation's ...( Hydrologists biologists geologists an...)

Hydrologists, biologists, geologists and geographers from the U. S. Geological Survey (USGS) will discuss their science at the First National Conference on Ecosystem Restoration (NCER) Dec. 6-10 at the Wyndham Palace in Orlando, Fla. The conference will assemble resource managers, policymakers, and scientists to exchange information for sustainable landscape-scale ecosystem restoration through science, planning, and policy. Among the presentations:

Tues. Dec. 7

Mercury Contamination of the Florida Everglades: A Convergence of External Forces and Natural Ecosystem Sensitivity, D. Krabbenhoft, USGS, Middleton, WI, 10:45-11am, Location: Cloister
Mercury contamination of aquatic ecosystems is a global issue that is at a cross roads of substantial science-policy debate. The dominant source of mercury to most aquatic ecosystems is atmospheric deposition, and as a result, there are presently proposed regulations in the US and elsewhere to reduce mercury emissions. In the Everglades, deposition from the atmosphere is only one of the factors that control the distribution of toxic methylmercury. Scientists have focused on determining the relative importance of these factors, and whether the Everglades restoration could affect mercury toxicity in the future.

Sulfur Contamination in the Florida Everglades: Where Does It Come From, What Is Its Extent, What Are Its Impacts, and What Can We Do About It?, W. Orem, USGS, Reston, VA, 11:00-11:15am, Location: Cloister.
Sulfur contamination represents a significant water quality issue for Everglades' restoration. Near canal water discharge, concentrations greatly exceed those of pristine areas. The major known impact of sulfur contamination in the Everglades is its dual link to methylmercury production, which peaks at moderate sulfur concentrations. So, simply lowering sulfur could at some locations aggravate the problem. Sulfur contamination may have other unknown impa
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Contact: Michelle Barret
mbarret@usgs.gov
601-594-6234
United States Geological Survey
6-Dec-2004


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