Distribution of Heavy Metals and Foraminiferal Assemblages in Sediments of Biscayne Bay, Florida, USA

Carnahan, Elizabeth A.; Hoare, A.; Hallock, Pamela; Lidz, Barbara H.; Reich, Christopher D.

doi:10.2112/06-0666.1

Cited by 42 publications

(23 citation statements)

References 21 publications

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“…Despite this, most pollution studies focus exclusively on bulk sediment analyses and/or foraminiferal distribution patterns (e.g. Alve, 1991Alve, , 1995Vilela et al, 2004;BuzasStephens and Buzas, 2005;Carnahan et al, 2008), partly due to the fact that accurate distribution coefficients have not yet been determined for linking sea water chemistry with foraminiferal carbonates for many of the elements of interest. As polluted sediments are usually suboxic or anoxic due to enrichment in organic matter with high levels of sulphate reduction, heavy metals are often accumulated and bound to highly insoluble minerals such as sulphides.…”

Section: Introductionmentioning

confidence: 99%

Heavy metal incorporation in foraminiferal calcite: results from multi-element enrichment culture experiments with <i>Ammonia tepida</i>

et al. 2010

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Abstract. The incorporation of heavy metals into carbonate tests of the shallow water benthic foraminifer Ammonia tepida was investigated under controlled laboratory conditions. Temperature, salinity, and pH of the culture solutions were kept constant throughout the duration of this experiment, while trace metal concentrations were varied. Concentrations of Ni, Cu, and Mn were set 5-, 10-, and 20 times higher than levels found in natural North Sea water; for reference, a control experiment with pure filtered natural North Sea water was also analysed. The concentrations of Cu and Ni from newly grown chambers were determined by means of both µ-synchrotron XRF and Laser Ablation Inductively Coupled Plasma Mass Spectroscopy (LA-ICP-MS). The results of both independent analytical techniques agreed within the analytical uncertainty. In general, the concentration of the analysed elements in the tests increased in line with their concentration in the culture solutions. Potential toxic and/or chemical competition effects might have resulted in the decreased incorporation of Ni and Cu into the calcite of the specimens exposed to the highest elemental concentrations. Mn incorporation exhibited large variability in the experiment with the 20-fold increased element concentrations, potentially due to antagonistic effects with Cu. The partition coefficients of Cu and Ni were calculated to be 0.14 ± 0.02 and 1.0 ± 0.5, respectively, whereas the partition coefficient of Mn was estimated to be least 2.4. These partition coefficients now open the way for reconstructing past concentrations for these elements in sea water.

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Section: Introductionmentioning

confidence: 99%

Heavy metal incorporation in foraminiferal calcite: results from multi-element enrichment culture experiments with <i>Ammonia tepida</i>

et al. 2010

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“…South Florida is a peninsula with a complex hydrological configuration that includes the Florida Everglades, which receive upland effluents rich in agricultural wastes that eventually flow into Biscayne Bay, Florida Bay, and the Florida Reef Tract (Brand 2002. Coastal lagoons are also localized adjacent to large metropolitan centers (e.g., Miami, Key West, Key Largo), and thus highly susceptible to the impacts caused by over five million people living within a narrow coastal band (Meeder and Boyer 2001, Carnahan et al 2008.…”

Section: Introductionmentioning

confidence: 99%

Spatio-temporal patterns and nutrient status of macroalgae in a heavily managed region of Biscayne Bay, Florida, USA

et al. 2011

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The coastal bays of South Florida are located downstream of the Florida Everglades, where a comprehensive restoration plan will strongly impact the hydrology of the region. Submerged aquatic vegetation communities are common components of benthic habitats of Biscayne Bay, and will be directly affected by changes in water quality. This study explores community structure, spatio-temporal dynamics, and tissue nutrient content of macroalgae to detect and describe relationships with water quality. The macroalgal community responded to strong variability in salinity; three distinctive macroalgal assemblages were correlated with salinity as follows: (1) low-salinity, dominated by Chara hornemannii and a mix of filamentous algae; (2) brackish, dominated by Penicillus capitatus, Batophora oerstedii, and Acetabularia schenckii; and (3) marine, dominated by Halimeda incrassata and Anadyomene stellata. Tissue-nutrient content was variable in space and time but tissues at all sites had high nitrogen and N:P values, demonstrating high nitrogen availability and phosphorus limitation in this region. This study clearly shows that distinct macroalgal assemblages are related to specific water quality conditions, and that macroalgal assemblages can be used as community-level indicators within an adaptive management framework to evaluate performance and restoration impacts in Biscayne Bay and other regions where both freshwater and nutrient inputs are modified by water management decisions.

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“…Bioaccumulation and spatial patterns in Hg cycling were then investigated, which lead to the identification of important factors (surface water dissolved organic matter (DOC sw , pH, chloride, etc.) in controlling THg distribution (Liu et al 2009 dealt with the assessment of eco-toxicity for a limited number of metals using data measured in Everglades' soil/sediment Carnahan et al 2008;Rand and Schuler 2009). There is still a general lack of knowledge on the source, distribution, transport, and risk of metals in the Everglades.…”

Section: Previous Studies On Metals In the Everglades And Surroundingmentioning

confidence: 99%

The Distribution of Toxic and Essential Metals in the Florida Everglades

Duan¹

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Distribution of Heavy Metals and Foraminiferal Assemblages in Sediments of Biscayne Bay, Florida, USA

Cited by 42 publications

References 21 publications

Heavy metal incorporation in foraminiferal calcite: results from multi-element enrichment culture experiments with <i>Ammonia tepida</i>

Heavy metal incorporation in foraminiferal calcite: results from multi-element enrichment culture experiments with <i>Ammonia tepida</i>

Spatio-temporal patterns and nutrient status of macroalgae in a heavily managed region of Biscayne Bay, Florida, USA

The Distribution of Toxic and Essential Metals in the Florida Everglades

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Distribution of Heavy Metals and Foraminiferal Assemblages in Sediments of Biscayne Bay, Florida, USA

Cited by 42 publications

References 21 publications

Heavy metal incorporation in foraminiferal calcite: results from multi-element enrichment culture experiments with &lt;i&gt;Ammonia tepida&lt;/i&gt;

Heavy metal incorporation in foraminiferal calcite: results from multi-element enrichment culture experiments with &lt;i&gt;Ammonia tepida&lt;/i&gt;

Spatio-temporal patterns and nutrient status of macroalgae in a heavily managed region of Biscayne Bay, Florida, USA

The Distribution of Toxic and Essential Metals in the Florida Everglades

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Heavy metal incorporation in foraminiferal calcite: results from multi-element enrichment culture experiments with <i>Ammonia tepida</i>

Heavy metal incorporation in foraminiferal calcite: results from multi-element enrichment culture experiments with <i>Ammonia tepida</i>