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|Title:||Large-scale operations management test of use of the white amur for control of problem aquatic plants. Report 1, Baseline studies. Volume VI, The water and sediment quality of Lake Conway, Florida|
Orange County Pollution Control Dept. (Fla.).
United States. Army. Corps of Engineers. Jacksonville District.
Aquatic Plant Control Research Program (U.S.)
Miller, H. Douglas.
Ragsdale, Peter B.
Kaleel, Raymond T.
|Keywords:||Aquatic plant control|
|Publisher:||Environmental Laboratory (U.S.)|
Engineer Research and Development Center (U.S.)
Abstract: Sampling and testing procedures utilized by the Orange County Pollution Control Department in collecting and analyzing water and sediment samples during the baseline data collection period of the Large-Scale Operations Management Test at Lake Conway, Fla., are documented in this report. Water quality data obtained during the baseline period, January 1976-August 1977, are compiled for each of the 12 sampling stations. Mean values and standard deviations are included for all of the relevant parameters. An analysis of water quality data showed little variability within each lake pool but indicated var iations between the pools. Several water quality indicators were consistently lower in the South and Middle pools of Lake Conway. An increase in biochemical oxygen demand, chemical oxygen demand, solids, and nutrients occurred in the East and West pools of the system and a further increase in nutrients, solids, and chlorophyll concentrations was noted in Lake Gatlin. In general, phytoplankton productivity levels were low throughout the Lake Conway system. Nutrient levels were also low, correlating well with the low plankton productivity. Future comparisons should give particular attention to assessing any changes in nutrient and productivity levels and community succession. Significant seasonal variations were indi cated for temperature, organic nitrogen, total phospho rus, and chlorophyll-a concentrations. A direct relationship existed between organic nitrogen and chlorophyll-a concentrations, whereas an inverse relationship was noted between temperature and total filterable phosphorus. Sediment samples were collected on a quarterly basis and analyzed for various constituents. Since only limited sediment quality data were collected, only a cursory analysis is provided in this report. Seasonal variations in the parameter values are documented in this report. Samples of aquatic macrophytes were collected during the prestocking period and analyzed for plant nutrients and heavy.metals. These data were obtained so that evaluations relating to an overall nutrient budget in the lake system could be made.
|Appears in Collections:||Technical Report|
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|TR-A-78-2-Report-1-Volume-6.pdf||10.97 MB||Adobe PDF|