Caribbean-Florida Water Science Center
Baseline Aquatic Contamination and Endocrine Status in Resident Fish Populations of Biscayne National Park and in the Adjacent Coastal Environment
Project Chief: Timothy Bargar, Southeast Ecological Science Center
Figure 1. Location of the coastal wetlands that will be re-hydrated and the South District Wastewater Treatment Plant in relation to Biscayne National Park.
Contaminant monitoring in Biscayne Bay (the Bay) has focused on current and legacy pesticides as well as on metals and other industrial pollutants. However, the existence of landfills, septic tank effluents, leaky sewer lines, and land application of wastewater or wastewater solids within the drainage basin of the Bay create the potential for the occurrence of organic wastewater compounds (OWCs) within the Bay and canals entering the Bay. A proposal to use treated wastewater for rehydration of coastal wetlands has led to a concern that OCWs could ultimately enter the Biscayne National Park (the Park) (fig. 1) and adversely impact aquatic biota. . Other studies have reported incidences of endocrine disruption in fish as a result of exposure to treated wastewater effluents. Without an assessment of pre-hydration conditions, it would be difficult to differentiate between impacts from the WWTP effluent and other OWC sources in the region.
1) Determine the occurrence of OWC in surface waters, sediments, and fish of Biscayne Bay, influent canals, and coastal wetlands, and the influence of seasonality (wet and dry season) on OWC inputs
2) Identify potential sources of OWCs for Biscayne Bay
3) Determine the potential for endocrine disruption from the OWCs that are present, as well as the current endocrine status of a selected resident fish species
The study was limited primarily to Biscayne National Park and the water ways (i.e., canals) in the vicinity of potential OWC sources for the Park. Tarpon Bay in the adjacent Florida Bay served as a reference.
Not yet available
A USGS Scientific Investigation Report will describe the environmental contamination and endocrine status in resident fish populations of Biscayne National Park and in the adjacent coastal environment.