Chemical and Physical Controls on Mercury Source Signatures in Stream Fish from the Northeastern United States

Metadata Updated: October 10, 2019

The Northeast Stream Quality Assessment (NESQA) performed mercury (Hg) isotope analysis of prey fish, game fish, and sediments from 29 sites across an urban to forested land-use gradient. The data presented here includes the chemical analysis of Hg concentrations and isotopes, capture information for fish species, land use, and stream water quality variables. Using these parameters it was determined that the preservation of Hg isotope signatures, which are indicative of source (e.g. atmospheric deposition, industrial point discharge), were dependent on land use, proximity to point sources, and variables related urbanization (e.g. road density and impervious surface cover). Additional Information regarding the interpretation of this data set can be found in the corresponding journal article: (

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License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

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Metadata Date July 30, 2019
Metadata Created Date October 10, 2019
Metadata Updated Date October 10, 2019
Reference Date(s) January 1, 2019 (publication)
Frequency Of Update notPlanned

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Harvested from DOI CKAN Harvest Source

Additional Metadata

Resource Type Dataset
Metadata Date July 30, 2019
Metadata Created Date October 10, 2019
Metadata Updated Date October 10, 2019
Reference Date(s) January 1, 2019 (publication)
Responsible Party MIDWEST REGION: UPPER MIDWEST WSC (Point of Contact)
Contact Email
Access Constraints Use Constraints: none, Access Constraints: none
Bbox East Long -69.969177246883
Bbox North Lat 43.711247986005
Bbox South Lat 40.767730340232
Bbox West Long -74.934997559185
Coupled Resource
Frequency Of Update notPlanned
Harvest Object Id ea3f30b9-a414-4655-8106-d982e18ac2f0
Harvest Source Id 34ce571b-cb98-4e0b-979f-30f9ecc452c5
Harvest Source Title DOI CKAN Harvest Source
Licence Unless otherwise stated, all data, metadata and related materials are considered to satisfy the quality standards relative to the purpose for which the data were collected. Although these data and associated metadata have been reviewed for accuracy and completeness and approved for release by the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data for other purposes, nor on all computer systems, nor shall the act of distribution constitute any such warranty.
Metadata Language
Metadata Type geospatial
Progress completed
Spatial Data Service Type
Spatial Reference System
Spatial Harvester true

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