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Element concentrations in nestling tree swallows (Tachycineta bicolor) from the U.S. and Binational Great Lakes’ Areas of Concern: Data

Dates

Publication Date
Start Date
2010-05-01
End Date
2015-07-01

Citation

Thomas W. Custer, Chris Custer, Paul Dummer, Diana Goldberg, and J. Christian Franson, 2019, Element concentrations in nestling tree swallows (Tachycineta bicolor) from the U.S. and Binational Great Lakes’ Areas of Concern: Data: , U.S. Geological Survey data release, https://doi.org/10.5066/P93O6QLH.

Summary

Tree swallow, Tachycineta bicolor, nestlings were collected from 76 sites in the Great Lakes which included multiple sites at 27 Areas of Concern (AOCs) and 12 sites not listed as AOCs from 2010 to 2015. Livers were harvested and analyzed for 21 elements. Mercury concentrations differed among AOCs; however, all livers analyzed had concentrations well within background and generally comparable or lower than most sites outside of the Great Lakes. Mercury, the only element specifically identified in the designation of AOCs, does not seem to pose a threat to birds at any of the AOCs monitored. In contrast, selenium (Se) concentrations were elevated at sites on the southwest shore of Lake Michigan to levels that could be harmful to reproduction. [...]

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Element data_working.csv 122.4 KB
Mercury and other element concentrations in nestling tree swallows Tachycineta bicolor from the U.S. and Binational Great Lakes Areas of Concern.xml
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Purpose

The objective of the present study was to extend the evaluation of contaminant exposure to tree swallows at Great Lakes AOCs (C Custer 2016, T. Custer 2016) with the addition of element exposure. The intent of these data is to assist with the evaluation and remediation of Great Lakes AOCs and also to assist in the evaluation of the health of wildlife residing there.

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  • Upper Midwest Environmental Sciences Center (UMESC)

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