Sulfur Contamination in the Florida Everglades: Initial Examination of Mitigation Strategies

Orem, William H.

doi:10.3133/ofr20071374

Cited by 9 publications

(2 citation statements)

References 130 publications

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“…As a result, Typha dominance in areas of the Everglades receiving nutrient input may be due, at least in part, to the greater tolerance of sulphide in Typha . In fact, increased sulphate has been observed in the northern Everglades where Cladium has been replaced by the invasion of Typha (Orem, 2007).…”

Section: Introductionmentioning

confidence: 99%

Does sulphate enrichment promote the expansion of Typha domingensis (cattail) in the Florida Everglades?¹

Mendelssohn

Chen

et al. 2009

Freshwater Biology

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1. The expansion of Typha domingensis into areas once dominated by Cladium jamaicense in the Florida Everglades has been attributed to altered hydrology and phosphorus enrichment, although increased concentrations of sulphate and phosphorus often coincide. The potential importance of hydrogen sulphide produced from sulphate in the expansion of Typha has received little attention. The present study aimed to quantify the comparative growth and photosynthetic responses of Cladium and Typha to sulphate ⁄ sulphide. 2. Laboratory experiments showed that Cladium is less tolerant of sulphide than Typha. Cladium was adversely affected at sulphide concentrations of approximately 0.22 mM M , while Typha continued to grow well and appeared healthy up to 0.69 mM M sulphide. 3. Experiments in field mesocosms provided strong support for species-specific differences in physiology and growth. Regardless of interstitial sulphide concentrations attained, Typha grew faster and had a higher photosynthetic capacity than Cladium. However, sulphide concentrations in the mesocosms reached only 0.18 mM M which, based on the hydroponic study, was insufficient to affect the growth or photosynthetic responses of either species. Nevertheless, the upper range of sulphide (0.25-0.375 mM M ) in Everglades' soil is high enough, based on our results, to impact Cladium but not Typha. 4. This research supports the hypothesis that sulphide accumulation could affect plant species differentially and modify species composition. Consequently, the role of sulphate loading should be considered, in conjunction with hydroperiod, phosphorus availability and disturbances, in developing future management plans for the Everglades.

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Section: Introductionmentioning

confidence: 99%

Does sulphate enrichment promote the expansion of Typha domingensis (cattail) in the Florida Everglades?¹

Mendelssohn

Chen

et al. 2009

Freshwater Biology

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“…Potential sources contributing to the SO 4 2j enrichment in Everglades wetlands include groundwater, rainwater, sea aerosol, internal S flux from sediments, and surface water inputs from Lake Okeechobee and the EAA (Schueneman, 2001). It has been reported that S from the EAA is a likely key contributor (Bates et al, 2002;Orem, 2007).…”

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Sulfur Distribution and Transformations in Everglades Agricultural Area Soil as Influenced by Sulfur Amendment

Ye¹,

Wright

Orem

et al. 2010

Soil Science

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Nutrient export from the Everglades Agricultural Area (EAA) has been implicated in causing sulfur (S) enrichment of Everglades wetlands. However, quantification of the S budget and transformations in EAA soils is inadequate. The objective of this study was to quantify various S fractions and investigate how elemental S amendment affects S dynamics in EAA soils. Reduced S compounds were not detected in soil before elemental S application. Organic S was the major form of S, comprising 87% of total S, followed by extractable SO 4 -S (13%). Extractable SO 4 -S for soils receiving 448 kg S ha j1 was 36%, 131%, 201%, and 270% higher than for unamended soils at 2, 6, 9, and 13 months, respectively. Elemental S was significantly higher in soils receiving 448 kg S ha j1 (482 mg kg j1 ) than in soils receiving 224 (111 mg kg j1 ) and 112 kg S ha Y1 (55 mg kg j1 ) and unamended soil (0 mg kg j1 ) at 2 months after S application. Similar to extractable SO 4 -S, elemental S significantly decreased during the growing season. Sulfur application did not affect the sulfatase activity, however, mineralizable S increased concurrently with S application rate, and the effects continued throughout the growing season. This result was largely attributed to the oxidation of the applied elemental S. Our results suggest that large-scale S application in the EAA soils is likely to increase SO 4 2j concentrations in soils, which poses a potential risk of SO 4 2j export to sensitive Everglades wetlands.

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Bioremediation of Mine Water

Klein

Tischler

Mühling

et al. 2013

Advances in Biochemical Engineering/Biotechnology

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Caused by the oxidative dissolution of sulfide minerals, mine waters are often acidic and contaminated with high concentrations of sulfates, metals, and metalloids. Because the so-called acid mine drainage (AMD) affects the environment or poses severe problems for later use, treatment of these waters is required. Therefore, various remediation strategies have been developed to remove soluble metals and sulfates through immobilization using physical, chemical, and biological approaches. Conventionally, iron and sulfate-the main pollutants in mine waters-are removed by addition of neutralization reagents and subsequent chemical iron oxidation and sulfate mineral precipitation. Biological treatment strategies take advantage of the ability of microorganisms that occur in mine waters to metabolize iron and sulfate. As a rule, these can be grouped into oxidative and reductive processes, reflecting the redox state of mobilized iron (reduced form) and sulfur (oxidized form) in AMD. Changing the redox states of iron and sulfur results in iron and sulfur compounds with low solubility, thus leading to their precipitation and removal. Various techniques have been developed to enhance the efficacy of these microbial processes, as outlined in this review.

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Sulfur Contamination in the Florida Everglades: Initial Examination of Mitigation Strategies

Cited by 9 publications

References 130 publications

Does sulphate enrichment promote the expansion of Typha domingensis (cattail) in the Florida Everglades?¹

Does sulphate enrichment promote the expansion of Typha domingensis (cattail) in the Florida Everglades?¹

Sulfur Distribution and Transformations in Everglades Agricultural Area Soil as Influenced by Sulfur Amendment

Bioremediation of Mine Water

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Sulfur Contamination in the Florida Everglades: Initial Examination of Mitigation Strategies

Cited by 9 publications

References 130 publications

Does sulphate enrichment promote the expansion of Typha domingensis (cattail) in the Florida Everglades?1

Does sulphate enrichment promote the expansion of Typha domingensis (cattail) in the Florida Everglades?1

Sulfur Distribution and Transformations in Everglades Agricultural Area Soil as Influenced by Sulfur Amendment

Bioremediation of Mine Water

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Product

Resources

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Does sulphate enrichment promote the expansion of Typha domingensis (cattail) in the Florida Everglades?¹

Does sulphate enrichment promote the expansion of Typha domingensis (cattail) in the Florida Everglades?¹