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  3. Biomass and methylmercury concentrations in biweekly biological samples from Brownlee and Oxbow Reservoir outflows, Snake River Hells Canyon Complex (Idaho-Oregon), 2018-2019

Biomass and methylmercury concentrations in biweekly biological samples from Brownlee and Oxbow Reservoir outflows, Snake River Hells Canyon Complex (Idaho-Oregon), 2018-2019

Dates

Publication Date
Start Date
2018-06-18
End Date
2019-09-23

Citation

Baldwin, A.K., Willacker, J.J., Eagles-Smith, C.A. and Bates, D., 2022, Biomass and methylmercury concentrations in biweekly biological samples from Brownlee and Oxbow Reservoir outflows, Snake River Hells Canyon Complex (Idaho-Oregon), 2018-2019: U.S. Geological Survey data release, https://doi.org/10.5066/P96E3DYN.

Summary

This dataset describes biomass and methylmercury concentrations in zooplankton, other invertebrates, fish, and coarse and fine detritus samples collected at the outflow locations of Brownlee and Oxbow Reservoirs in the Snake River Hells Canyon Complex. Based on the sampling locations, the sampled materials were presumed to have flowed through the dam turbines or over the spillway, thereby representing biological export from the reservoirs. Samples were collected biweekly at each location over a sixteen-month period, June 2018 – September 2019. Sampling and analysis methods are described in the Processing Steps section of the metadata.

Contacts

Point of Contact :
Austin K Baldwin, U.S. Geological Survey, NW-PACIFIC ISLAND REG
Originator :
Austin K Baldwin, James J Willacker, Collin A Eagles-Smith, Dain Bates
Metadata Contact :
Austin K Baldwin, U.S. Geological Survey, NW-PACIFIC ISLAND REG
Distributor :
U.S. Geological Survey - ScienceBase
SDC Data Owner :
Idaho Water Science Center
USGS Mission Area :
Ecosystems

Attached Files

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HCC_bio_MeHg_export.xml
“Metadata”
Original FGDC Metadata
View 		23.67 KB application/fgdc+xml
BioExport_Sampling_Nets.jpg
“Sampling nets” 		thumbnail 125.18 KB image/jpeg
HCC_bio_MeHg_export.xlsx
“Data” 		19.73 KB application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
SampleCollection.jpg
“Sample collection” 		thumbnail 432.33 KB image/jpeg

Purpose

These data were collected to assess the downstream export from reservoirs of biomass and biological methylmercury in different biological compartments.
Sample collection
Sample collection

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Communities

  • USGS Data Release Products
  • USGS Idaho Water Science Center

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Additional Information

Identifiers

Type Scheme Key
DOI https://www.sciencebase.gov/vocab/category/item/identifier doi:10.5066/P96E3DYN

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