George Aiken 2002 spreadsheet http://sofia.usgs.gov/exchange/aiken/aikenchem.html The data are for dissolved organic carbon (DOC) and specific ultraviolet absorbance (SUVA) for surface water and pore water in the South Florida Water Management District (SFWMD) water conservation areas. It is well recognized that the chemical forms of mercury in the water column and sediments are intimately related to bioaccumulation and body burden. Interactions of mercury and dissolved organic matter may play an important role in controlling the bioavailability and reactivity of mercury. The goal of our research is to provide information about the interactions of mercury and dissolved organic matter that will better define this important, albeit, poorly understood process. Ultimately, this research will lead to a more complete model of mercury behavior in the Everglades. Our research focused on the effect of DOC on the transport and reactivity of mercury in the Everglades through a combined field and laboratory study. The underlying hypothesis of this research is that the chemistry and structural characteristics of organic matter in the Everglades have a controlling influence on mercury cycling processes such as methylamine and volatilization. The South Florida Water Management District, the U.S. Environmental Protection Agency, and the USGS South Florida Ecosystems Initiative have organized an intensive study of surface water chemistry in Southern Florida. In 1994, several onsite-research locations were selected in the Water Conservation Areas of the South Florida Water Management District in conjunction with this multidisciplinary, multiage research project. 199503 199806 ground condition Complete None planned -80.9 -80.1 26.79 25.59 none DOC dissolved organic carbon chemistry hydrology SUVA specific ultraviolet absorbance ISO 19115 Topic Category environment inlandWaters 007 012 Department of Commerce, 1995, Countries, Dependencies, Areas of Special Sovereignty, and Their Principal Administrative Divisions, Federal Information Processing Standard (FIPS) 10-4, Washington, DC, National Institute of Standards and Technology US United States U.S. Department of Commerce, 1987, Codes for the identification of the States, the District of Columbia and the outlying areas of the United States, and associated areas (Federal Information Processing Standard 5-2): Washington, DC, NIST Florida FL Department of Commerce, 1990, Counties and Equivalent Entities of the United States, Its Possessions, and Associated Areas, FIPS 6-3, Washington, DC, National Institute of Standards and Technology Broward County Miami-Dade County Palm Beach County none Central Everglades Greater Lake Okeechobee South East Coast Water Conservation Area 2 Water Conservation Area 3 WCA2 WCA3 none none George Aiken U.S. Geological Survey Project chief mailing address

3215 Marine Street, Suite E-127

Boulder CO 80303 303 541-3036 303 447-2505 graiken@usgs.gov http://sofia.usgs.gov/publications/fs/186-96/map.gif south Florida DOC study area (darkened area) GIF Project personnel include Kenna Butler MC Excel spreadsheets Haitzer, M. Aiken, G. R.; Ryan, J. N. 2002 paper 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. http://sofia.usgs.gov/publications/papers/hg_dom_binding/ Benoit, J. M. Mason, R. P.; Gilmour, C. C.; Aiken, G. A. 2001 paper Geochimica Et Cosmochimica Acta v. 65 no. 24 Oxford, United Kingdom Geochemical Society (Elsevier Science, Ltd.) http://sofia.usgs.gov/publications/papers/k_hgbinding Ravichandran, M Aiken, G. R.; Ryan, J. N.; Reddy, M. M. 1998 paper Environmental Science and Technology v. 32 Washington, DC American Chemical Society Entire paper is available from the Environmental Science and Technology website at http://pubs.acs.org/journals/esthag/index.html. Journal membership is required for download. http://sofia.usgs.gov/publications/papers/dislncinnabar Reddy, M. M. Aiken, G. R. 2001 paper Water, Air and Soil Pollution v. 132, nos. 1-2 Dordrecht, Netherlands Kluwer Academic Publishers Entire paper is available from the Water, Air, and Soil Pollution website. Journal membership is required. http://sofia.usgs.gov/publications/papers/fulvicacid Drexel, R. Todd Haitzer, Markus; Ryan, Joseph N.; Aiken, George R.; Nagy, Kathlyn L. 2002 paper Environmental Science and Technology v. 36 no.19 Washington, DC American Chemical Society Entire paper is available from the Environmental Science and Technology website at http://pubs.acs.org/journals/esthag/index.html. Journal membership is required for download. http://sofia.usgs.gov/publications/papers/merc_peat/ Reddy, Michael M. Aiken, George R.; Schuster, Paul F.; Gunthers, Charmaine; Charlton, Scott; Tregallas, Jason 1995 paper Reston, VA U.S. Geological Survey Prepared in cooperation the South Florida Water Management District and the U.S. Environmental Protection Agency http://sofia.usgs.gov/publications/reports/merc_carbon Ravichandran, M. Aiken, G. R.; Ryan, J. N.; Reddy, M. M. 1999 report Environmental Science and Technology v. 33, n. 9 Washington, DC American Chemical Society Entire paper is available from the Environmental Science and Technology website at http://pubs.acs.org/journals/esthag/index.html. Journal membership is required for download. http://sofia.usgs.gov/publications/papers/inhibitnagg Haitzer, Markus Aiken, George R.; Ryan, Joseph N. 2003 report Environmental Science and Technology v. 37, n. 11 Washington, DC Americal Chemical Society Entire paper is available from the Environmental Science and Technology website at http://pubs.acs.org/journals/esthag/index.html. Journal subscription is required for download. http://sofia.usgs.gov/publications/papers/bind_hg_humic Waples, Jacob S. Nagy, Kathryn L.; Aiken, George A.; Ryan, Joseph N. 2005 report Geochimica et Cosmochimica Acta v. 69, n. 6 Oxon, United Kingdom Geochemical Society (Elsevier Science, Ltd.) The entire article is available from the Geochimica et Cosmochimica website but journal membership is required. unavailable unknown Samples from select sites (ENR, STA 2, WCA-1, WCA-2, and WCA-3) were collected in June 2005 and were analyzed. The samples are part of a long term monitoring effort to identify changes in the concentration and chemical reactivity of dissolved organic matter (DOM) in the Everglades. Surface water samples were collected at a single depth from 7 locations and at two depths at 3 locations. Marsh pore-water samples were collected at several depths below the sediment-water interface at 4 locations. Surface water samples were collected each pore-water sampling location. A replicate sample was collected to evaluate onsite-sampling variability. Distilled-water blank samples and standard reference water samples (SRWS) were submitted to the laboratory with the onsite samples and were analyzed concurrently with them. Reference samples were processed using the same procedures as the onsite samples. Not complete George Aiken U.S. Geological Survey Project chief mailing address

3215 Marine Street, Suite E-127

Boulder CO 80303 303 541-3036 303 447-2505 graiken@usgs.gov SFWMD water conservation areas 1 1 Degrees, minutes, and decimal seconds North American Datum of 1983 Geodetic Reference System 80 6378137 298.257 Data available for surface water and DOC include site ID, date, DOC (mg.L) and SUVA (absorbance/mg C/L). Data for pore water also include sampling depth. Samples that had analytical results less that the detection limits of the selected methods are indicated in the dataset by the less than symbol. USGS personnel Heather S.Henkel U.S. Geological Survey mailing address

600 Fourth St. South

St. Petersburg FL 33701 USA 727 803-8747 ext 3028 727 803-2030 hhenkel@usgs.gov Surface Water DOC, Pore Water DOC, and Specific ultraviolet absorbance (SUVA) data The data have no guarantees explicit or implied Excel unknown 0.59 http://sofia.usgs.gov/exchange/aiken/aikenchem.html Data can be downloaded from the SOFIA website none 20071106 Heather Henkel U.S. Geological Survey mailing and physical address

600 Fourth Street South

St. Petersburg FL 33701 USA 727 803-8747 ext 3028 727 803-2030 sofia-metadata@usgs.gov Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998