Science Keywords>HUMAN DIMENSIONS>HABITAT CONVERSION/FRAGMENTATION>RECLAMATION/REVEGETATION/RESTORATION
Integrated Biogeochemical Studies of Contaminants in the Everglades: Task 1 -Nutrients, Sulfur, and Organic MatterEntry ID: USGS_SOFIA_nuts_S_orgmat_04
Abstract: The scientific focus of this project is to examine the complex interactions (synergistic and antagonistic) of contaminants (externally derived nutrients, mercury, sulfur, pesticides, herbicides, polycyclic aromatic and aliphatic hydrocarbons, and other metals), ecosystem responses to variations in contaminant loading (time and space dimensions), and how imminent ecosystem restoration steps may ... affect existing contaminant pools. The major objectives of this project are to use an integrated biogeochemical approach to examine: (1) anthropogenic-induced changes in the water chemistry of the Everglades ecosystem, (2) biogeochemical processes within the ecosystem affecting water chemistry, and (3) the predicted impacts of restoration efforts on water chemistry. The project uses a combination of field investigations, experimental approaches (mesocosm experiments in the ecosystem, and controlled laboratory experiments), and modeling to achieve these objectives. Contaminants of concern will include nutrients, sulfur, mercury, organic compounds, and other metals. Protocols for the collection of samples and chemical analyses developed during earlier studies will be employed in these efforts. Integration of the individual tasks within the project is achieved by colocation of field sampling sites, and cooperative planning and execution of laboratory and mesocosm experiments. Results from all tasks within the project are archived within a single database for use in Decision Management GIS systems and ecosystem models.
This project is an integration of a number of individual but interrelated tasks that address environmental impacts in the south Florida ecosystem using geochemical approaches. The Everglades restoration program is prescribing ecosystem-wide changes to some of the physical, hydrological, and chemical components of this ecosystem. However, it reamins uncertain what overall effects will occur as these components react to the perturbations especially of the biological and chemical components and toward what type of "new ecosystem" the Everglades will evolve. Results of these geochemical investigations will provide the critical elements for building ecosystem models and screening-level risk assessment for contaminants in the ecosystem.
Data Set Citation
Dataset Originator/Creator: William H. Orem David P. Krabbenhoft
Dataset Title: Integrated Biogeochemical Studies of Contaminants in the Everglades: Task 1 -Nutrients, Sulfur, and Organic MatterOnline Resource: http://sofia.usgs.gov/projects/int_geochem_nutrients/
Start Date: 2000-10-01Stop Date: 2005-09-30
AGRICULTURE > AGRICULTURAL CHEMICALS > PESTICIDES
BIOSPHERE > TERRESTRIAL ECOSYSTEMS > WETLANDS
HUMAN DIMENSIONS > ENVIRONMENTAL IMPACTS > CONTAMINANT LEVELS/SPILLS
HUMAN DIMENSIONS > HABITAT CONVERSION/FRAGMENTATION > RECLAMATION/REVEGETATION/RESTORATION
TERRESTRIAL HYDROSPHERE > WATER QUALITY/WATER CHEMISTRY > CONTAMINANTS
TERRESTRIAL HYDROSPHERE > WATER QUALITY/WATER CHEMISTRY > HYDROCARBONS
TERRESTRIAL HYDROSPHERE > WATER QUALITY/WATER CHEMISTRY > NUTRIENTS
TERRESTRIAL HYDROSPHERE > WATER QUALITY/WATER CHEMISTRY > ORGANIC MATTER
BIOSPHERE > AQUATIC ECOSYSTEMS > WETLANDS
Access Constraints None
Use Constraints These data are subject to change and are not citeable until reviewed and approved for official publication.
Data Set Progress
Role: TECHNICAL CONTACT
Email: borem at usgs.gov
U.S. Geological Survey 12201 Sunrise Valley Drive
Province or State: VA
Postal Code: 20192
Role: DIF AUTHOR
Email: alicia.m.aleman at nasa.gov
Goddard Space Flight Center Code 610.2
Province or State: MD
Postal Code: 20771
Haitzer, M., Aiken, G. R.; Ryan, J. N., 2002, Binding of Mercury (II) to Dissolved Organic Matter: The Role of the Mercury-to-DOM Concentration Ration, Environmental Science and Technology, v. 36, Washington, DC, American Chemical Society, The entire paper is available from the Environmental Science and Technology Journal web site; however, a journal subscription is required.
Bates, A. L., Orem, W. H.; Harvey, J.. W.; Spiker, E. C., 2001, Geochemistry of Sulfur in the Florida Everglades: 1994 through 1999, USGS Open-File Report, OFR 01-007, Tallahassee, FL, U.S. Geological Survey.
Orem, William H., Lerch, Harry E.; Rawlik, Peter, 1997, Geochemistry of Surface and Pore Water at USGS Coring Sites in Wetlands of South Florida: 1994 and 1995, USGS Open-File Report, OFR 97-454, St. Petersburg, FL, U.S. Geological Survey.
Bates, Anne L, Orem, William H.; Harvey. Judson W.; Spiker, Elliot C., 2002, Tracing sources of sulfur in the Journal of Environmental Quality, v. 31 no. 1, Madison, WI, American Society of Agronomy,
The journal is published jointly by the American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America.
Gough, L. P., Kotra, R. K.; Holmes, C. W.; Orem, W. H.; Hageman, P. L.; Briggs, P. H.; Meier, A. L.; Brown, Z. A., 2000, Regional Geochemistry of Metals in Organic-Rich Sediments, Sawgrass, and Surface Water from Taylor Slough, Florida, USGS Open-File Report, OFR 00-327, Reston, VA, U.S. Geological Survey.
Bates, Annie L., Spiker, Elliott C.; Holmes, Charles W., 1998, Speciation and isotopic composition of sedimentary sulfur in the Everglades, Florida, USA, Chemical Geology, 146 (3-4), Amsterdam, Netherlands, Elsevier.
Orem, W. H., Holmes, C. W.; Kendall. C.; Lerch, H. E.; Bates, A. L.; Silva, S. R.; Boylan, A.; Corum, M.; Marot, M.; Hedgman, C., 1999, Geochemistry of Florida Bay sediments: I. nutrient history at five sites in eastern and central Florida Bay, Journal of Coastal Research, v. 15, Royal Palm Beach, FL, Coastal Research and Education Foundation (CERF), The entire paper is available from the Journal of Coastal Research website at,
Journal membership is required for download. http://sofia.usgs.gov/publications/papers/geochem_flbaysed
Orem, W. H., 2004, Impacts of sulfate contamination on the Florida Everglades ecosystem, USGS Fact Sheet, 109-03, Reston, VA.
Louda, J. W., Loitz, J. W.; Melisiotis, A.; Orem, W.H., 2004, Potential sources of hydrogel stabilization of Florida Bay lime mud sediments and implications for organic matter preservation, Journal of Coastal Research, v. 20, n.2, Royal Palm Beach, FL, Coastal Education and Research Foundation (CERF).
Zielinski, R. A., Orem, W. H.; Simmons, K. R.; Bohlen, P. J., 2006, Fertilizer-derived uranium and sulfur in rangeland soil and runoff: a case study in central Florida, Water, Air, & Soil Science, v. 176, n 1-3,
Dordrecht, Netherlands, Springer Netherlands,
Paper is available from the Springer website at http://www.springerlink.com/content/m3140808618r7202/
journal membership is required to obtain the full article
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Creation and Review Dates
DIF Creation Date: 2007-02-20
Last DIF Revision Date: 2009-02-24