Bendis, B. J.. FL Dept. of Environmental Protection,
, . J.. ,

An analysis of water quality data, with emphasis on chlorophyll a, from Tampa Bay, Florida from 1974-1994 is presented. Chlorophyll a concentrations decrease from the head (Hillsborough Bay) to the mouth (Lower Tampa Bay). A seasonal cycle exists with maxima occurring in late summer/fall. Chlorophyll a peaked around 1983 and have declined since. Total phosphorus declined from 1974 to 1982 and since has remained relatively steady. Total phosphorus maxima in August and September coincide with maximum freshwater inflow during the wet season. Total nitrogen peaks in 1983 and 1987 also correspond to high freshwater inflows. These peaks occur throughout Tampa Bay and not only near large freshwater sources, i.e., rivers. Freshwater inflow peaked in 1979, 1983 and 1987. Loadings of TN and TP, as well as chlorophyll a concentrations, have declined in the bay over the time series, despite the high variability. The implementation of management practices aimed to improve water quality, such as advanced wastewater treatment in 1982, are certainly at least partially responsible for the improvement.
Day: Wednesday, Feb. 3
Time: Poster
Location: Sweeney Center
Code: CS59WE1004S