Mercury species and other selected constituent concentrations in water, sediment, and biota of Sinclair Inlet, Kitsap County, Washington, 2007-10

Huffman, Raegan L.; Wagner, Richard J.; Toft, Jason D.; Cordell, Jeffery R.; DeWild, John F.; Dinicola, Richard S.; Aiken, George R.; Krabbenhoft, DavidP.; Marvin-DiPasquale, Mark C.; Stewart, Aubrey; Moran, Patrick; Paulson, Anthony J.

doi:10.3133/ds658

Cited by 2 publications

(1 citation statement)

References 6 publications

(6 reference statements)

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“…Sediment porewater was obtained via centrifugation and subsequent filtration (0.45 μm) in an N 2 flushed glove bag, with sub-samples collected and preserved for sulfide (S 2− ), ferrous iron (Fe 2+ ), sulfate (SO 4 2− ), chloride (Cl − ), and dissolved organic carbon (DOC). Details on sample preservation and analysis for the above sediment and porewater constituents has been previously documented (Huffman et al, 2012;Marvin-DiPasquale et al, 2008). Sediment porewater salinity was measured using a Vista A366ATC refractometer.…”

Section: Mercury Speciation and Ancillary Sediment And Porewater Paramentioning

confidence: 99%

Effect of salinity on mercury methylating benthic microbes and their activities in Great Salt Lake, Utah

Boyd

Barkay

et al. 2017

Science of The Total Environment

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Surface water and biota from Great Salt Lake (GSL) contain some of the highest documented concentrations of total mercury (THg) and methylmercury (MeHg) in the United States. In order to identify potential biological sources of MeHg and controls on its production in this ecosystem, THg and MeHg concentrations, rates of Hg(II)-methylation and MeHg degradation, and abundances and compositions of archaeal and bacterial 16 rRNA gene transcripts were determined in sediment along a salinity gradient in GSL. Rates of Hg(II)-methylation were inversely correlated with salinity and were at or below the limits of detection in sediment sampled from areas with hypersaline surface water. The highest rates of Hg(II)-methylation were measured in sediment with low porewater salinity, suggesting that benthic microbial communities inhabiting less saline environments are supplying the majority of MeHg in the GSL ecosystem. The abundance of 16S rRNA gene transcripts affiliated with the sulfate reducer Desulfobacterium sp. was positively correlated with MeHg concentrations and Hg(II)-methylation rates in sediment, indicating a potential role for this taxon in Hg(II)-methylation in low salinity areas of GSL. Reactive inorganic Hg(II) (a proxy used for Hg(II) available for methylation) and MeHg concentrations were inversely correlated with salinity. Thus, constraints imposed by salinity on Hg(II)-methylating populations and the availability of Hg(II) for methylation are inferred to result in higher MeHg production potentials in lower salinity environments. Benthic microbial MeHg degradation was also most active in lower salinity environments. Collectively, these results suggest an important role for sediment anoxia and microbial sulfate reducers in the production of MeHg in low salinity GSL sub-habitats and may indicate a role for salinity in constraining Hg(II)-methylation and MeHg degradation activities by influencing the availability of Hg(II) for methylation.

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Section: Mercury Speciation and Ancillary Sediment And Porewater Paramentioning

confidence: 99%

Effect of salinity on mercury methylating benthic microbes and their activities in Great Salt Lake, Utah

Boyd

Barkay

et al. 2017

Science of The Total Environment

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A conceptual site model of contaminant transport pathways from the Bremerton Naval Complex to Sinclair Inlet, Washington, 2011–21

Conn,

Janssen,

Opatz

et al. 2024

Scientific Investigations Report

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This study and report were funded through U.S. Navy Military Interdepartmental Purchase Request N4425A-20-MP-001GS. The Center for Transformative Environmental Monitoring Program provided rental equipment and technical support for the fiber optic distributed temperature sensing survey.The U.S. Geological Survey's (USGS) Hydrologic Remote Sensing Branch also provided technical support for the fiber optic distributed temperature sensing survey. USGS hydrologist Steve Cox designed the pore-water sampler and provided technical expertise to the project. USGS team members included

show abstract

Mercury species and other selected constituent concentrations in water, sediment, and biota of Sinclair Inlet, Kitsap County, Washington, 2007-10

Cited by 2 publications

References 6 publications

Effect of salinity on mercury methylating benthic microbes and their activities in Great Salt Lake, Utah

Effect of salinity on mercury methylating benthic microbes and their activities in Great Salt Lake, Utah

A conceptual site model of contaminant transport pathways from the Bremerton Naval Complex to Sinclair Inlet, Washington, 2011–21

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