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Summary of Total Mercury Concentrations in Dragonfly Larvae, Western Mosquitofish, and Tree Swallow Eggs Collected from Cosumnes River Preserve 2011 – 2013

Dates

Publication Date
Start Date
2011
End Date
2013

Citation

Pierce, J.R., Eagles-Smith, C.A., Ackerman, J.T., Herzog, M.P., Hartman, C.A., and Herring, Garth, 2017, Summary of Total Mercury Concentrations in Dragonfly Larvae, Western Mosquitofish, and Tree Swallow Eggs Collected from Cosumnes River Preserve 2011 – 2013: U.S. Geological Survey data release, https://doi.org/10.5066/F7X928HW.

Summary

The Cosumnes River Preserve in the California’s Central Valley contains a mosaic of managed wetlands where conditions may promote high levels of methylmercury bioaccumulation. In order to document potential environmental health risk in these wetlands due to mercury, we analyzed dragonfly larvae, western mosquitofish, and tree swallow eggs collected from wetlands and rice fields of the Preserve from 2011 to 2013.

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Attached Files

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Cosumnes_DFvWMF_GeoMean.jpg thumbnail 38.51 KB
Cosumnes_Frequency.csv 573 Bytes
Cosumnes_Histogram_THg_benchmarks.jpg thumbnail 55.07 KB
Cosumnes_THg_con.csv 761 Bytes
Cosumnes_THg_con_formatted.jpg thumbnail 71.47 KB
Cosumnes_ToxBench.csv 670 Bytes
Cosumnes_ToxBench_Formatted.jpg thumbnail 42.04 KB
THg_Cosumnes_River_Preserve_2011_2013.xml
Original FGDC Metadata

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60.59 KB

Purpose

The Sacramento-San Joaquin River Delta in California’s Central Valley contains numerous floodplains and managed wetlands that could promote the production of MeHg. Aquatic transport of inorganic mercury downstream from the Sierra Nevada Mountains, where historic mining activity has resulted in extensive Hg contamination, to zones in the delta suited for high rates of methylation, poses a risk to wildlife in the region. These data summarize mercury (Hg) concentrations in dragonfly larvae, Western Mosquitofish (Gambusia affinis), and eggs of tree swallows (Tachycineta bicolor) from the Cosumnes River Preserve in the Sacramento-San Joaquin River Delta, and compares those Hg concentrations to toxicological benchmarks.
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Communities

  • Forest and Rangeland Ecosystem Science Center (FRESC)
  • USGS Data Release Products

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DOI https://www.sciencebase.gov/vocab/category/item/identifier doi:10.5066/F7X928HW

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