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Over the past 50 years, large areas of agricultural land have been drained and put into intensive agricultural production (Hodge and McNally, 2000). This fact holds truth when it's applied to the Florida Everglades. Water to the Everglades is now being delivered by several water control structures. These water control structures are predominantly fed by canals, which obtain water from Lake Okeechobee. This becomes an issue because of the anthropogenic influences around the Lake Okeechobee area. Some examples of human activity are storm water runoff from the nutrient enriched Everglades Agricultural Area, mercury pollution, and invading species (DeAngelis et al., 1998).
One area of the southern Everglades that has been influenced by the agricultural areas of central Florida is Taylor Slough. Currently the S332 and S332D pump supply water to Taylor Slough. The water from the S332 pump shows an overload of nitrogen and phosphorus that is being transported into the system compared with another site to the south of the structure. The quality of the water being delivered suggests that point pollution is present. The impact of water quality point pollution in Taylor Slough affects the ecosystem level processes that happen within the area. The understanding of the changes in the ecosystem level process due to enriched water inputs is crucial for a successful restoration. The objectives of the Taylor Slough monitoring project are to observe nutrient transformations in the water flowing from canals and through the freshwater wetlands of the Southern Everglades, to quantify the potential effects of that water on these wetlands, and to investigate ecological implications for the estuarine wetland zone.

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S332D pumping structure on the L-31W canal |
The Taylor Slough monitoring project includes three transects located in the upper, middle, and lower sections of Taylor Slough. Each transect contains three sites oriented from west to east. Also there are two end member sites located at the S332D and Argyle Henry (AH). Each site contains three 1m2 plots in which macrophytes, specifically Cladium jamaicense, are counted and one third of the total are measured to calculate biomass. Each plot contains a porewater device that is set 5cm below the soil surface so that the porewater at this depth can be sampled. Porewater samples are analyzed for organic and inorganic nutrients. Also when water is present, the pH and Eh of the soil are measured. All these sites, 11 in total, are sampled bimonthly.
Four water quality stations are located in the Park Road, S332, S332D, and AH. Each station contains one autosampler, rain level gage, and water level gage. The stations are fully functional only when water is present, June through January. The autosamplers are programmed to take a 1L sample every 3 days as a composite of 4 250mL subsamples drawn every 18 hours (to include a dawn sample, dusk sample, a noon sample, and a midnight sample). Also when rain events dump more than 1in. of water in an hour, the autosamplers are programmed to take a 500mL sample half an hour after its threshold is reached. All water samples are analyzed for TN and TP. |
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