Preliminary Survey of Chemical Contaminants in Water, Sediment, and Aquatic Biota at Selected Sites in Northeastern Florida Bay and Canal C-111

Goodman, Larry R.; Lewis, Michael A.; Macauley, John M.; Smith, Ralph G.; Moore, James C.

doi:10.18785/goms.1701.01

Cited by 11 publications

(13 citation statements)

References 10 publications

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“…The differences in loads of allochthonous MeHg (produced in the upstream marshes and the mangrove transition zones) to the two embayments appear to be significant. This may explain the greater MeHg biomagnification observed in the biota of Little Madeira Bay compared to Joe Bay (Cantillo et al 1997;Goodman et al 1999;D. Evans, NOAA).…”

Section: Differences Between Terrestrial Watershedsmentioning

confidence: 99%

Source Identification of Florida Bay's Methylmercury Problem: Mainland Runoff Versus Atmospheric Deposition and In situ Production

Rumbold

Evans

Niemczyk

et al. 2010

Estuaries and Coasts

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The first advisory to limit consumption of Florida Bay fish due to mercury was issued in 1995. Studies done by others in the late 1990s found elevated water column concentrations of both total Hg (THg) and methylmercury (MeHg) in creeks discharging from the Everglades, which had its own recognized mercury problem. To investigate the significance of allochthonous MeHg discharging from the upstream freshwater Everglades, we collected surface water and sediment along two transects from 2000 to 2002. Concentrations of THg and MeHg, ranging from 0.36 ng THg/L to 5.98 ng THg/L and from <0.02 ng MeHg/L to 1.79 ng MeHg/L, were elevated in the mangrove transition zone when compared both to upstream canals and the open waters of Florida Bay. Sediment concentrations ranged from 5.8 ng THg/g to 145.6 ng THg/ g and from 0.05 ng MeHg/g to 5.4 ng MeHg/g, with MeHg as a percentage of THg occasionally elevated in the open bay. Methylation assays indicated that sediments from Florida Bay have the potential to methylate Hg. Assessment of mass loading suggests that canals delivering stormwater from the northern Everglades are not as large a source as direct atmospheric deposition and in situ methylation, especially within the mangrove transition zone.

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Section: Differences Between Terrestrial Watershedsmentioning

confidence: 99%

Source Identification of Florida Bay's Methylmercury Problem: Mainland Runoff Versus Atmospheric Deposition and In situ Production

Rumbold

Evans

Niemczyk

et al. 2010

Estuaries and Coasts

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“…In a SFWMD monitoring program of South Florida canals from 1992 to 2001, the most common pesticides in surface water were the herbicides atrazine and ametryn, while DDE and DDD were the most frequently detected pesticides in sediment samples (Pfeuffer and Rand 2004). The U.S.EPA, in 1995, also monitored contaminants in surface water, sediment, and biota in the C-111 and creeks of northeast Florida Bay (Goodman et al 1999). Endosulfan residues were detected in sediments of the C-111, and in sediments of Shell and Trout Creeks (in northeast Florida Bay).…”

Section: Introductionmentioning

confidence: 99%

Aquatic risk assessment of pesticides in surface waters in and adjacent to the Everglades and Biscayne National Parks: I. Hazard assessment and problem formulation

Carriger

Rand

2008

Ecotoxicology

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An aquatic risk assessment under the U.S. Environment Protection Agency (EPA) ecological risk framework was conducted for atrazine, metolachlor, malathion, chlorpyrifos, and endosulfan in the C-111 freshwater basin (eastern boundary of the Everglades National Park), northeast Florida Bay, and south Biscayne Bay in South Florida. Based on the use of the hazard quotient approach, measured concentrations of chlorpyrifos and endosulfan in surface waters suggest potential hazards to aquatic organisms and were, therefore, considered as chemicals of potential ecological concern (COPECs). The problem formulation included an overview of the physical/chemical and environmental fate characteristics and aquatic toxicology of the COPECs. Background surface water exposure concentrations of endosulfan and toxicity data from laboratory and field studies indicate that fish and invertebrate mortality may be a concern when endosulfan is applied in agricultural areas near aquatic ecosystems.

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“…), and catfish (Ictalurus spp.). Osprey in south Florida feed on fish that have relatively high levels of contaminants, such as mercury (Hg), leading to particularly high levels in both juvenile and adult birds through biomagnification (Evans and Crumley 1999;Goodman et al 1999). Though most osprey populations are migratory, there are a few colonies that are resident, such as the Florida Bay population that resides in the Everglades National Park, Florida.…”

Section: Introductionmentioning

confidence: 99%

Metal concentrations in osprey (Pandion haliaetus) populations in the Florida Bay estuary

et al. 2008

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Mercury and trace metal contamination is a concern in the Florida Bay estuary, but the effects on biological pathways are not very well understood. The analysis of mercury and trace metals (beryllium, vanadium, chromium, cobalt, nickel, copper, arsenic, cadmium, antimony, and lead) was conducted on tissues of adult and juvenile osprey (Pandion haliaetus) to examine the bioaccumulation and distribution in Florida Bay. Mercury concentrations were found at levels associated with decreased reproductive success, and no significant differences were found between adult and juvenile samples. Concentrations of other trace metals were generally below levels known to cause environmental problems. Mercury levels were particularly high in birds from central and eastern Florida Bay. In addition to mercury, vanadium was the only trace metal that showed significant geographic variation. Mercury concentrations in adult samples were comparable to levels reported in adult osprey from two other sites in North America, but concentrations in juvenile tissues were higher in Florida Bay. Although ospreys are a potential biomonitoring species for mercury contamination, further inter-population comparisons are needed, as well as additional information about the risks associated with bioaccumulation.

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Preliminary Survey of Chemical Contaminants in Water, Sediment, and Aquatic Biota at Selected Sites in Northeastern Florida Bay and Canal C-111

Abstract: Santa Rosa County, FL) that were held in cages in the C-ll1 canal and at selected sites in northeastern Florida Bay. Samples were collected during June and July 1995.

Cited by 11 publications

References 10 publications

Source Identification of Florida Bay's Methylmercury Problem: Mainland Runoff Versus Atmospheric Deposition and In situ Production

Source Identification of Florida Bay's Methylmercury Problem: Mainland Runoff Versus Atmospheric Deposition and In situ Production

Aquatic risk assessment of pesticides in surface waters in and adjacent to the Everglades and Biscayne National Parks: I. Hazard assessment and problem formulation

Metal concentrations in osprey (Pandion haliaetus) populations in the Florida Bay estuary

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