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René M. Price Department of Earth and Environment Southeast Environmental Research Center

2009 Florida Coastal Everglades Mid-Term Review. Coastal Groundwater Discharge. René M. Price Department of Earth and Environment Southeast Environmental Research Center. FCE LTER. FCE II CENTRAL HYPOTHESIS 3:

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René M. Price Department of Earth and Environment Southeast Environmental Research Center

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  1. 2009 Florida Coastal Everglades Mid-Term Review Coastal Groundwater Discharge René M. Price Department of Earth and Environment Southeast Environmental Research Center FCE LTER

  2. FCE II CENTRAL HYPOTHESIS 3: • Water residence time, groundwater inputs, and tidal energy interact with climatic and disturbance regimes to modify ecological pattern and process in oligotrophic estuaries; this dynamic will be most pronounced in the oligohaline ecotone. • GENERAL QUESTION 1: • How will the interactions of precipitation, surface water, groundwater, tides and evapotranspiration control the conditions [physical and chemical] in the oligohaline ecotone under increasing freshwater inflows from the Everglades? FCE LTER

  3. SRS-1 LTER sites USGS Groundwater sites SRS-2 USGS SH1 SRS-3 LTER II Proposed Groundwater sites TS/Ph-1 USGS SH2 TS/Ph-2 SRS-4 USGS SH3 SRS-5 SRS-6 TS/Ph-3 USGS E-146 TS/Ph-6 USGS Upper Taylor TS/Ph-7 HISTORY Price, R.M., P.K. Swart, J.W. Fourqurean. 2006. Coastal groundwater discharge - an additional source of phosphorus for the oligotrophic wetlands of the Everglades. Hydrobiologia , 569(1): 23-36.

  4. HISTORY groundwater Gulf of Mexico Eastern Florida Bay surface water Price, R.M., P.K. Swart, J.W. Fourqurean. 2006.

  5. MODELS FCE II Hydrology Working Group Conceptual Model CGD Solutes • Question 1: • How will changing inflows from the upstream Everglades affect the position of the brackish zone and alter geochemical conditions in the ecotone by suppressing brackish groundwater discharge.

  6. Position of Mixing Zone SRS-1 SRS-2 SRS-3 SRS-4 TS/Ph-1 TS/Ph-2 SRS-5 SRS-6 TS/Ph-3 TS/Ph-6 TS/Ph-7 Salinity contour in June – Aug 2003 5 Salinity contour in Sept. 2007 5 Price, Stalker, Anderson, Smith

  7. Groundwater Groundwater Surface Water Surface Water Position of Mixing Zone SH2/SRS-4 Groundwater salinity lags water level by 3 months Surface water salinity lags water level by 0.5-4 mo. centered on 2 months Moses, Price, Anderson, Smith

  8. Tamiami Trail L-67ext • Monitoring prior to the “Grand Experiment”

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