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Title:   Author  item
                                            Harman Fetcho, Jenniferitem
                                            McConnell, Lauraitem
                                            Potter, Thomasitem
                                            Rice, Clifforditem
                                            Sadeghi, Aliitem
                                            Sefton, Kerryitem
                                            SCHAFFER, B - UNIV OF FLORIDAitem
                                            CURRY, R - NAT PARK SERVitem
                                            Bialek Kalinski, Krystynaitem
                                            Smith, Ramonaitem
                                            Hapeman, Cathleen
  Submitted to: Society of Environmental Toxicology and Chemistry (SETAC)
                                    Publication Type: Abstract Only
                                    Publication Acceptance Date: 8/12/2005
                                    Publication  Date: 11/17/2005
                                    Citation: Harman Fetcho, J.A., McConnell, L.L., Potter, T.L., Rice, C., Sadeghi, A.M., Sefton, K.A., Schaffer, B.A., Curry, R.W., Bialek Kalinski, K.M., Smith, R.D., Hapeman, C.J. 2005. Pesticide occurrence in selected south florida canals and biscayne bay during high agricultural activity [abstract]. Society of Environmental Toxicology and Chemistry Abstracts. p. 164.Interpretive Summary: .
                                Technical Abstract: Climate and soil conditions in South Florida along with an extensive canal system facilitate movement of agricultural pesticides into surface waters. In a two-year study (2002-2004) of the currently-used pesticides in South Florida, 91 surface water samples were analyzed for 39 pesticides. Atrazine, endosulfan, metolachlor, chlorpyrifos, and chlorothalonil were the most frequently detected in the canals and in Biscayne Bay, with average concentrations of 16, 11, 9.0, 2.6 and 6.0 ng/L, respectively. Concentrations of atrazine and chlorpyrifos were highest near corn production. Chlorothalonil and endosulfan concentrations were highest near vegetable production, with no clear trend for metolachlor which is used on multiple crops. Concentration data were used to calculate an aquatic life hazard potential for the planting period (November) versus the harvest period (March). This analysis indicated that a higher hazard potential occurs during harvest, primarily from the use of endosulfan. These data will also serve to document canal conditions prior to implementation of the Comprehensive Everglades Restoration Plan (CERP).


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