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Record Search Query: ServiceParameters>MODELS>COMPONENT PROCESS MODELS

Methylmercury Degradation Rates
 Entry ID: USGS_SOFIA_MeHg_degrad_rates

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Summary
Abstract: The spreadsheet contains the data for 12 sites for sediment methylmercury degradation potential rate measurements.

High concentrations of methyl-mercury (CH3Hg+), a toxic substance to both animals and humans, recently have been measured in a number of top predators (including panthers and game fish) native to the Florida Everglades. The objective of this research was 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. The focus was on better understanding the microbial and geochemical controls regulating CH3Hg+ degradation. At the time of the study, little was known about the specific factors influencing this process in natural systems.
Related URL
Link: GET DATA
Description: Data may be downloaded from the SOFIA website.
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Multimedia Sample
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ISO Topic Category
ENVIRONMENT
Project
USGS_SOFIA >South Florida Information Access Supplemental Info
Quality Data were collected at a suite of sites between 1995 and 1998 in the Water Conservation Areas and Everglades National Park. Due to changes in methodology, only data collected since June 1996 is included in the dataset.

Not all sites have data for all dates.

Periodic field measurements of ... View entire text
Access Constraints None
Use Constraints None.
Ancillary Keywords
Palm Beach County
Miami-Dade County
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Distribution Media
Distribution_Size: 0.041
Distribution_Format: MS Excel
Fees: None
Personnel
MARK MARVIN-DIPASQUALE
Role: TECHNICAL CONTACT
Phone: 650-329-4442
Fax: 650-329-4463
Email: mmarvin at usgs.gov
Contact Address:
U.S. Geological Survey
Bldg 15, McKelvey Building
345 Middlefield Road, MS 480
City: Menlo Park
Province or State: CA
Postal Code: 94025
Country: USA
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Publications/References
Marvin-DiPasquale, Mark C., Oremland, Ronald S. 1998; Bacterial methylmercury degradation in Florida Everglades peat sediment; Environmental Science and Technology, v. 32, n. 17, American Chemical Society All users may view the abstract of this article. If you are a subscriber, you may view the article. If you are not a subscriber, you may purchase and download the PDF version of the article.
http://pubs3.acs.org/acs/journals/doilookup?in_doi=10.1021/es971099l

Marvin-DiPasquale, Mark C., Agee, Jennifer; McGowan, Chad; Oremland, Ronald S.; Thomas, Martha; Krabbenhoft, David; Gilmour, Cynthia C. 2000; Methyl-mercury degradation pathways: a comparison among three mercury-impacted ecosystems; Environmental Science and Technology, v. 34 , n. 23, American Chemical Society All users may view the abstract of this article. If you are a subscriber, you may view the article. If you are not a subscriber, you may purchase and download the PDF version of the article.
http://sofia.usgs.gov/exchange/marvin-dipasquale/mmdindex.html
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