Bacterial Demethylation of Methylmercury in the South Florida Ecosystem

Project Investigators: Ronald S. Oremland, Mark Marvin-DiPasquale Project Start Date: 1995 End Date: 1999 Proposals Data Metadata Publications Project Location Map

The objective of this research is to provide ecosystem managers with CH₃Hg⁺ degradation rate data from a number of study sites that represent a diversity of hydrologic and nutrient regimes common to the Everglades. Further, our focus is on better understanding the microbial and geochemical controls regulating CH₃Hg⁺ degradation. At present, little is known regarding the specific factors influencing this process in natural systems.

Proposals

• 1998
• 1999

Data

• Methylmercury Degradation Rates (from the data exchange pages)

Metadata

• Bacterial demethylation of methylmercury in the South Florida Ecosystem (project metadata)
• Methylmercury Degradation Rates (data set metadata)

Publications

Abstracts

• Bacterial Methylmercury Degradation in Florida Everglades Peat Sediment (Abstract only; see publications section below for entire document. Published in: Environmental Science and Technology)
• Environmental Controls on Methylmercury Production and Degradation in Everglades Sediments (PDF from the USGS Water Quality Workshop, October 2000)
• Methyl-Mercury Degradation in Florida Everglades Peat-Sediment
• Methyl-Mercury Degradation Pathways: A Comparison Among Three Mercury-Impacted Ecosystems (Abstract only; see publications section below for entire document. Published in: Environmental Science and Technology)
• Methylmercury Degradation in the Florida Everglades (from the South Florida Restoration Science Forum, May 1999)
• The Formation and Destruction of Methylmercury by Bacterial Processes (from the USGS Mercury Workshop, July 1996)

Fact Sheets

• Methyl-Mercury Degradation in Florida Everglades Peat-Sediment

Journal Articles

• Bacterial Methylmercury Degradation in Florida Everglades Peat Sediment (Published in: Environmental Science and Technology)
• Methyl-Mercury Degradation Pathways: A Comparison Among Three Mercury-Impacted Ecosystems (Published in: Environmental Science and Technology)

Posters

• Environmental Controls on Methylmercury Production and Degradation in Everglades Sediments (PowerPoint Presentation from the USGS Water Quality Workshop, October 2000)