A comparison of mercury exposure and risk between artificial impoundments and natural lakes measured in Common Loons and their prey, 1996-97

Metadata Updated: October 9, 2019

In 1996-97, data on Hg distribution and MeHg availability in reservoirs and natural lakes were collected. The prey sampling strategy was based on a Common Loon feeding selection study conducted by Barr (1996). In 1996, we targeted four size classes of Yellow Perch (Perca flavescens) and three size classes of White Sucker (Catostomus commersoni), both species preferentially chosen by loons. In 1997, Yellow Perch were emphasized because we found a strong relationship between perch Hg and adult loon blood Hg (Evers and Reaman 1997). On lakes where Yellow Perch were not present we collected three size classes of minnows and other species that were available to adult and juvenile loons. Whole fish (all organs and muscle tissue) composites were analyzed for total Hg in 1996, and both total and MeHg in 1997.

Access & Use Information

Restricted: This dataset can only be accessed or used under certain conditions. 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.
The information resource is proprietary and/or copyrighted. Access to this information by the public is very limited. Please contact the associated Point of Contact regarding additional use constraints and requirements for obtaining the information.

Downloads & Resources

References

https://ecos.fws.gov/ServCat/Reference/Profile/61472

References

https://ecos.fws.gov/ServCat/Reference/Profile/61472

Dates

Metadata Created Date April 30, 2019
Metadata Updated Date October 9, 2019

Metadata Source

Harvested from DOI CKAN Harvest Source

Additional Metadata

Resource Type Dataset
Metadata Created Date April 30, 2019
Metadata Updated Date October 9, 2019
Publisher Fish and Wildlife Service
Unique Identifier FWS_ServCat_61472
Maintainer
Brent Frakes
Maintainer Email
Public Access Level restricted public
Bureau Code 010:18
Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
Metadata Catalog ID C:\Program Files (x86)\FWS\DataStore\Application\OpenData\FWS_ServCat_v1_1.json
Schema Version https://project-open-data.cio.gov/v1.1/schema
Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
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Harvest Object Id 005b370e-649e-483d-864f-cef29585c718
Harvest Source Id 34ce571b-cb98-4e0b-979f-30f9ecc452c5
Harvest Source Title DOI CKAN Harvest Source
Data First Published 1998-12-07
Homepage URL https://ecos.fws.gov/ServCat/Reference/Profile/61472
Data Last Modified 1998-12-07
Program Code 010:094, 010:028
Related Documents "https://ecos.fws.gov/ServCat/Reference/Profile/61472"
Rights The information resource is proprietary and/or copyrighted. Access to this information by the public is very limited. Please contact the associated Point of Contact regarding additional use constraints and requirements for obtaining the information.
Source Datajson Identifier true
Source Hash d3f1795cbcb3602cab963b255f59933f91545349
Source Schema Version 1.1
Spatial -71.5869141,43.4369659,-66.90674,46.98025
Temporal 1996-01-01/1997-01-01
Category "Unpublished Report"

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