Clam Bay Seagrass Assessment Collier County Coastal Zone ...

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Methods Table 2.1- Braun-Blanquet seagrass coverage method. Assessed Value Percent Seagrass Coverage 0 No coverage 0.1 Solitary short shoot 0.5 Sparse of
Methods Table 2.2 - Sampled water quality parameters for Clam Bay sites. Physical pH Parameter Unit Method Standard units YSI Temperature °C YSI Dissolved Oxygen (DO) mg/l YSI Specific Conductivity µmhos/l YSI Secchi Depth cm Secchi Disk/ measuring tape Turbidity NTU SM 18 2130 B Color Pt-Co 110.2 Total Suspended Solids (TSS) mg/l 160.2 Volatile Suspended Solids (VSS) mg/l 160.2 Chemical Total Kjeldahl (TKN) mg/l SM20 4500-Norg D Total Phosphorus (TP) mg/l SM18 4500-P E (P Nitrate+Nitrite (NOx) mg/l EPA 353.2 Ortho-Phosphate (SRP) mg/l SM18 4500- P E Total Phosphorus (TP) Biological mg/l Chlorophyll a (Chl a) µg/l SM18 10200H Finally, the water quality data sets collected within Clam Bay by the Conservancy of Southwest Florida and the Pelican Bay Services Division were reviewed and analyzed, if found appropriate, to examine trends in nutrients, salinity, etc. within Clam Bay. 2.3 Task 3 – Development of Estimated Freshwater and Pollutant Loading Estimates for the Clam Bay Watershed 2.3.1 Model Development An approach used by regulatory agencies in Florida estimates the average annual pollutant load to quantify the amount of nonpoint source pollutants from surface waters discharged into a waterbody. Calculations were conducted using the PBS&J Pollutant Loading Model. This model is a GIS-based Pollutant Loading and Removal Model that uses data on hydrologic characteristics, drainage characteristics, average annual rainfall, hydrologic parameters and pollutant event mean concentrations (EMC). Developing estimates of pollutant loads requires estimating both the stormwater runoff volume and the corresponding concentration of the pollutants under consideration. Following the flow chart seen in Figure 2.1 and described below, the Pollutant Loading Model incorporates, Soils, Land Use, and Best Management Practices (BMP) GIS layers with Rainfall, Runoff, EMC, and BMP efficiency lookup tables to calculate runoff volumes, gross loads, and net loads. 9 Clam Bay Seagrass Assessment DRAFT October 2007
Page 1 and 2: Clam Bay Seagrass Assessment Prepar
Page 3 and 4: Contents List of Figures Figure 1.1
Page 5 and 6: 1.0 Introduction 1.1 Development of
Page 7 and 8: Introduction Based on assessments o
Page 9 and 10: Introduction Figure 1.4 - Spatial e
Page 11: 2.0 Methods 2.1 Task 1 - Kickoff Me
Page 15 and 16: Methods 2.3.2 Major Watersheds When
Page 17 and 18: Methods category of “wetlands”
Page 19 and 20: Methods Table 2.5 - BMP Removal Eff
Page 21 and 22: Results Figure 3.2 - Presence (gree
Page 23 and 24: Results Figure 3.3 - Location of
Page 25 and 26: Results coverage was never more tha
Page 27 and 28: Results 3.2 Water Quality The locat
Page 29 and 30: Results 3.2.1 Based on the data col
Page 31 and 32: Results regression analysis was use
Page 33 and 34: Results Figure 3.11 Comparison of a
Page 35 and 36: Results Figure 3.15 - Total phospho
Page 37 and 38: Results 3.3.1 Net Pollutant Loads T
Page 39 and 40: Results Table 3.6 - Gross Historic,
Page 41 and 42: Conclusions and Action Plan • Wat
Page 43 and 44: Conclusions and Action Plan 3. Init

Clam Bay Seagrass Assessment Collier County Coastal Zone ...

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