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): Alison C. Dibble; James W. Hinds; Ralph Perron; Natalie Cleavitt; Richard L. Poirot; Linda H. Pardo
    Date: 2016
    Source: Gen. Tech. Rep. NRS-165. Newtown Square, PA: U.S. Department of Agriculture, Forest Service, Northern Research Station. 44 p.
    Publication Series: General Technical Report (GTR)
    Station: Northern Research Station
    PDF: View PDF  (4.0 MB)

    Description

    To address a need for air quality and lichen monitoring information for the Northeast, we compared bulk chemistry data from 2011-2013 to baseline surveys from 1988 and 1993 in three Class I Wilderness areas of New Hampshire and Vermont. Plots were within the White Mountain National Forest (Presidential Range—Dry River Wilderness and Great Gulf Wilderness, New Hampshire) and the Green Mountain National Forest (Lye Brook Wilderness, Vermont). We sampled epiphyte communities and found 58 macrolichen species and 55 bryophyte species. We also analyzed bulk samples for total N, total S, and 27 additional elements. We detected a decrease in Pb at the level of the National Forest and in a subset of plots. Low lichen richness and poor thallus condition at Lye Brook corresponded to higher N and S levels at these sites. Lichen thallus condition was best where lichen species richness was also high. Highest Hg content, from a limited subset, was on the east slope of Mt. Washington near the head of Great Gulf. Most dominant lichens in good condition were associated with conifer boles or acidic substrates. The status regarding N and S tolerance for many lichens in the northeastern United States is not clear, so the influence of N pollution on community data cannot be fully assessed. Continued monitoring of lichens and bryophytes, especially if integrated with IMPROVE aerosol data, may reveal changes in air quality, climatic conditions, and other potential stressors or stimuli. Lichen health was impacted by low air quality at some of our sites.

    Publication Notes

    • Check the Northern Research Station web site to request a printed copy of this publication.
    • Our on-line publications are scanned and captured using Adobe Acrobat.
    • During the capture process some typographical errors may occur.
    • Please contact Sharon Hobrla, shobrla@fs.fed.us if you notice any errors which make this publication unusable.
    • 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

    Dibble, Alison C.; Hinds, James W.; Perron, Ralph; Cleavitt, Natalie; Poirot, Richard L.; Pardo, Linda H. 2016. Monitoring air quality in class I wilderness areas of the northeastern United States using lichens and bryophytes. Gen. Tech. Rep. NRS-165. Newtown Square, PA: U.S. Department of Agriculture, Forest Service, Northern Research Station. 44 p.

    Keywords

    lichens, bryophytes, air quality, monitoring, lead, mercury, nitrogen, thallus condition, IMPROVE, National Forest, Wilderness Area

    Related Search


    XML: View XML
Show More
Show Fewer
Jump to Top of Page
https://www.fs.usda.gov/treesearch/pubs/53332