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publications > paper > surface-water transport of suspended matter through wetland vegetation of the Florida everglades > site description
Surface-water transport of suspended matter through wetland vegetation of the Florida everglades
2. Site Description[4] The particle tracer experiment was performed at a surface-water flume facility constructed within Shark River Slough (25° 38'31.2"N, 80° 43'20.4"W) in Everglades National Park. The flume facility, originally designed to monitor wetland response to low-level additions of phosphorus, has four open-ended channels, each 3 m wide and extending for 100 m in a southerly direction. Our experiment was conducted in the westernmost channel on 21 November 2002, when the depth of water equaled 60 cm. Phosphorous dosing in this channel started prior to our particle-tracer experiment and increased water-column concentrations of phosphorus at the head of the channel (where phosphorus was added) to 15 µg/L. Surface water collected from the channel contained high concentrations of dissolved organic carbon (14 mg/L) and had a pH and ionic strength of 6.9 and 0.004 M, respectively. Eleocharis cellulosa (806 stems/m2) and Eleocharis elongata (341 stems/m2) composed the dominant macrophytes in the channel (E. Gaiser, unpublished data, 2002), and periphyton (a matrix of algae and heterotrophic microbes) persisted as a discontinuous mat floating on the top few centimeters of the water column and as thin coatings ("sweaters") on macrophyte stems. The macrophytes were anchored in peat, which was approximately 0.5 m in thickness and underlain by limestone. Directly above the peat was a thin layer (0.04 m) of flocculent detrital organic matter.
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U.S. Department of the Interior, U.S. Geological Survey
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Last updated: 12 August, 2008 @ 05:07 PM(KP)