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Data for Biogeochemical and Physical Processes Controlling Mercury Methylation and Bioaccumulation in Lake Powell, Glen Canyon National Recreation Area, Utah and Arizona, 2014-2015

Dates

Publication Date
Start Date
2014
End Date
2015

Citation

Marvin-DiPasquale, M.C., Naftz, D.L., Krabbenhoft, D.P., Anderson, M., Boyd, E.S., Aiken, G.R., Conaway, C.H., Ogorek, J.M., Poulin, B.A., Fuller, C.C., Antweiler, R.C., and Stricker, C.A., 2017, Data for Biogeochemical and Physical Processes Controlling Mercury Methylation and Bioaccumulation in Lake Powell, Glen Canyon National Recreation Area, Utah and Arizona, 2014-2015: U.S. Geological Survey data release, https://doi.org/10.5066/F74X560J.

Summary

This dataset includes the field measurements and laboratory analyses of surface water, seston, and sediment collected from Lake Powell, within Glen Canyon National Recreation area (GLCA), during high flow (May-June 2014) and low flow (August 2015) conditions. The study area includes 12-13 sampling sites that follow a transect spanning the entire length of the reservoir from the Colorado River inflow to the Glen Canyon dam, as well as the San Juan River arm, the Escalante River arm and West Canyon. Bed sediment samples were analyzed for mercury speciation, methylmercury production and degradation rates, total reduced sulfur, iron speciation, organic content, and 16S rRNA gene templates as a proxy for microbial abundances. Water samples [...]

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LP_Photo.JPG thumbnail 2.35 MB
T1_Data_Dictionary_LP2014-2015.csv 99.07 KB
T2_Data_Sed_LP2014-2015.csv 6.15 KB
T3_Data_SW_LP2014-2015.csv 60.48 KB
T4_Data_SESTON_LP2014-2015.csv 22.74 KB
T5_Data_FISH_LP2014-2015.csv 7.83 KB
T6_EXO_Profiles_Main_Channel_LP2014-2015.csv 780.66 KB
T7_EXO_Profiles_Off_Channel_LP2014-2015.csv 223.44 KB
T8_QA-QC_Table_LP2014-2015.csv 9.43 KB
T9_Data_Molecular_LP2014-2015.csv 19.54 KB
Site_code_locations_LP_2014-2015.kmz 2.79 KB
Metadata_Record_LP2014-2015.xml
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16.13 KB
Extension: Sample_Sites_LP2014_2015.zip
Sample_Sites_LP2014_2015.sd 672.87 KB
thumbnail.png thumbnail 2.4 KB

Purpose

Lake Powell, part of the Glen Canyon National Recreation area (GLCA), in Utah and Arizona, is the second largest reservoir in the U.S. providing water recreation to nearly 3 million visitors each year and drinking water to major cities in the southwest (Las Vegas, Phoenix, Los Angeles, Tucson, and San Diego). In November 2012, Utah and Arizona issued a joint fish consumption advisory on striped bass harvested from the southern half of Lake Powell due to elevated Hg levels. Researchers from USGS, the National Park Service, and Montana State University conducted this study to gain a process-level understanding of the biogeochemical, microbial, and physical conditions causing the Hg accumulation in Lake Powell’s striped bass and particularly in the southern portion of the reservoir.
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DOI https://www.sciencebase.gov/vocab/category/item/identifier doi:10.5066/F74X560J

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