South Florida Ambient Pesticide Monitoring Program

Pfeuffer, Richard J.; Rand, Gary M.

doi:10.1023/b:ectx.0000023565.91904.20

Cited by 26 publications

(19 citation statements)

References 2 publications

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“…Restoration efforts, including best management practices (BMPs) for phosphorus use in the EAA, and the construction of stormwater treatment areas (STAs) have reduced phosphorus in water discharged to the Everglades to present levels of 30-50 µg l −1 (Reddy et al, 2006). Phosphorus contamination, however, is not the only water quality issue of concern in the Everglades (Bates et al, 2002;Pfeuffer and Rand, 2004;Scheidt and Kalla, 2007). Sulfur has emerged as another critical water quality issue (Orem, 2004).…”

Section: Introductionmentioning

confidence: 99%

Sulfur in the South Florida Ecosystem: Distribution, Sources, Biogeochemistry, Impacts, and Management for Restoration

Orem

Gilmour

Axelrad

et al. 2011

Critical Reviews in Environmental Science and Technology

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Section: Introductionmentioning

confidence: 99%

Sulfur in the South Florida Ecosystem: Distribution, Sources, Biogeochemistry, Impacts, and Management for Restoration

Orem

Gilmour

Axelrad

et al. 2011

Critical Reviews in Environmental Science and Technology

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“…In South Florida, the a-and b-endosulfan isomers and endosulfan sulfate have been detected in surface water (fresh-and salt-water) and sediment (fresh-and salt-water) since the early 1990s in monitoring studies conducted by the South Florida Water Management District (SFWMD) (Miles and Pfeuffer 1997;Pfeuffer and Rand 2004), NOAA (Scott et al 1994(Scott et al , 2002Fulton et al 2004), U.S.EPA (Goodman et al 1999) and U.S. Department of Agriculture (Harman-Fetcho et al 2005). At several fresh-and saltwater sampling sites in these monitoring studies, U.S.EPA water quality criteria (WQC) for freshwater and marine life were exceeded for endosulfan.…”

Section: Introductionmentioning

confidence: 99%

Endosulfan and its metabolite, endosulfan sulfate, in freshwater ecosystems of South Florida: a probabilistic aquatic ecological risk assessment

et al. 2010

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Endosulfan is an insecticide-acaricide used in South Florida and is one of the remaining organochlorine insecticides registered under the Federal Insecticide Fungicide and Rodenticide Act by the U.S.EPA. The technical grade material consists of two isomers (alpha-, beta-) and the main environmental metabolite in water, sediment and tissue is endosulfan sulfate through oxidation. A comprehensive probabilistic aquatic ecological risk assessment was conducted to determine the potential risks of existing exposures to endosulfan and endosulfan sulfate in freshwaters of South Florida based on historical data (1992-2007). The assessment included hazard assessment (Tier 1) followed by probabilistic risk assessment (Tier 2). Tier 1 compared actual measured concentrations in surface freshwaters of 47 sites in South Florida from historical data to U.S.EPA numerical water quality criteria. Based on results of Tier 1, Tier 2 focused on the acute and chronic risks of endosulfan at nine sites by comparing distributions of surface water exposure concentrations of endosulfan [i.e., for total endosulfan (summation of concentrations of alpha- and beta-isomers plus the sulfate), alpha- plus beta-endosulfan, and endosulfan sulfate (alone)] with distributions of species effects from laboratory toxicity data. In Tier 2 the distribution of total endosulfan in fish tissue (whole body) from South Florida freshwaters was also used to determine the probability of exceeding a distribution of whole body residues of endosulfan producing mortality (critical lethal residues). Tier 1 showed the majority of endosulfan water quality violations in South Florida were at locations S-178 followed by S-177 in the C-111 system (southeastern boundary of Everglades National Park (ENP)). Nine surface water sampling sites were chosen for Tier 2. Tier 2 showed the highest potentially affected fraction of toxicity values (>10%) by the estimated 90th centile exposure concentration (total endosulfan) was at S-178. At all other freshwater sites there were <5% of the toxicity values exceeded. Potential chronic risk (9.2% for total endosulfan) was only found at S-178 and all other sites were <5%. Joint probability curves showed the higher probability of risk at S-178 than at S-177. The freshwater fish species which contain tissue concentrations of endosulfan (total) with the highest potential risk for lethal whole body tissue residues were marsh killifish, flagfish and mosquitofish. Based on existing surface water exposures and available aquatic toxicity data, there are potential risks of total endosulfan to freshwater organisms in South Florida. Although there are uncertainties, the presence of tissue concentrations of endosulfan in small demersal fish, is of ecological significance since these fish support higher trophic level species, such as wading birds.

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“…However, the large scale use of ametryne results in negative effects on the environment. Ametryne is difficult to be degraded by soil microorganisms due to an aromatic ring structure in its molecule, and can undergo leaching affecting aquatic organisms (Farré et Pfeuffer & Rand (2004) detected ametryne in surface water and sediment samples in South Florida, United States. Koskine & Harper (1990) detected the presence of triazine herbicide residues in Mé larchez waters on the island of Martinique, France.…”

Section: Introductionmentioning

confidence: 99%

Toxicity Studies of Ametryne to Land and Aquatic Organisms

Régo

Bidóia

Reganhan-Coneglian

2017

AST

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The ametryne herbicide is largely used on sugar cane plantation in Brazil. It is persistent in the environment and can be found in bodies of water, impacting the aquatic and terrestrial ecosystems. Generally, in crops are applied mixtures of herbicides in order to obtain a higher success in combating weeds. This study evaluated the toxicity only of ametryne herbicide, without mixture with other herbicides, in order to quantify only the degree of dangerousness. This work evaluated the toxicity of ametryne to one aquatic test organism (Daphnia similis) and two land test organism (Eruca sativa and Lactuca sativa). Immobility of D. similis was evaluated in the presence of ametryne. Influences of ametryne on seed germination and root growth of E. sativa and L. sativa were evaluated. Even at low concentrations (5.00 mg/L), ametryne caused toxic effects on the mobility of D. similis, and 0.25 g/L caused toxic effects on the seeds. Root growth and the percentage of inhibition showed greater sensitivity to ametryne compared with seed germination. Thus, ametryne resulted in toxic effects to the analyzed organisms, which may bring damage to both aquatic and terrestrial ecosystems.

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South Florida Ambient Pesticide Monitoring Program

Cited by 26 publications

References 2 publications

Sulfur in the South Florida Ecosystem: Distribution, Sources, Biogeochemistry, Impacts, and Management for Restoration

Sulfur in the South Florida Ecosystem: Distribution, Sources, Biogeochemistry, Impacts, and Management for Restoration

Endosulfan and its metabolite, endosulfan sulfate, in freshwater ecosystems of South Florida: a probabilistic aquatic ecological risk assessment

Toxicity Studies of Ametryne to Land and Aquatic Organisms

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