Skip to Main Content
U.S. Forest Service
Caring for the land and serving people

United States Department of Agriculture

Home > Search > Publication Information

  1. Share via EmailShare on FacebookShare on LinkedInShare on Twitter
    Dislike this pubLike this pub
    Author(s): Randall K. Kolka; E.A. Nater; D.F. Grigal; E.S. Verry
    Date: 1999
    Source: Water; Air; and Soil Pollution 113: 273-294, 1999
    Publication Series: Miscellaneous Publication
    PDF: View PDF  (525 KB)

    Description

    Inputs of mercury (Hg) and dissolved organic carbon (DOC) in throughfall and stemflow waters were measured for an upland/bog watershed in northern Minnesota, and were compared to the deposition in a nearby opening to determine the influence of tree canopies on Hg and DOC deposition. Twice as much Hg and seven times as much DOC was deposited in the forested watershed compared to the opening. Mass balance studies that are based on wet-only deposition in openings severely underestimate atmospheric deposition of Hg in forests. Conifer canopies are more efficient filters of airborne particulates than are deciduous canopies as indicated by much higher Hg concentrations and total deposition in throughfall and stemflow waters under conifers. Significant positive relationships existed between Hg and DOC in both throughfall (36-57% of the variation) and stemflow waters (55-88%) of the variation). Hg complexation by DOC appears to be related to the contact time between precipitation and carbon sources.

    Publication Notes

    • You may send email to pubrequest@fs.fed.us to request a hard copy of this publication.
    • (Please specify exactly which publication you are requesting and your mailing address.)
    • We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
    • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.

    Citation

    Kolka, Randall K.; Nater, E.A.; Grigal, D.F.; Verry, E.S. 1999. Atmospheric Inputs of Mercury and Organic Carbon into a Forested Upland/Bog Watershed. Water; Air; and Soil Pollution 113: 273-294, 1999

    Keywords

    atmospheric deposition, dissolved organic carbon, mercury, stemflow, throughfall

    Related Search


    XML: View XML
Show More
Show Fewer
Jump to Top of Page
https://www.fs.usda.gov/treesearch/pubs/2068