Skip to Main Content
Lichen elemental indicators for air pollution in Eastern United States forests; a pilot study in the upper MidwestAuthor(s): Susan Will-Wolf; Sarah Jovan; Michael C. Amacher; Paul L. Patterson
Source: Gen. Tech. Rep. PNW-GTR-985. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 178 p.
Publication Series: General Technical Report (GTR)
Station: Pacific Northwest Research Station
Download Publication (3.0 MB)
DescriptionFive lichen species were evaluated as element-content pollution bioindicators for a pilot study in Wisconsin and adjacent U.S. states, using data for 20 elements. Goodquality elemental data for aluminum, cobalt, chromium, copper, iron, nitrogen, and sulfur—mostly from nonspecialist U.S. Forest Service Forest Inventory and Analysis staff collections with extensively documented protocols—clearly indicated a site pollution load in the project area. The percentage of nearby land in forest was the strongest predictor for sample collection at study sites of the two most frequent species; such knowledge facilitates improved broad applications. Improved protocols and three lichen species were recommended for implementation as elemental bioindicators in the north-central United States; species were also recommended for three other Eastern U.S. regions. The three reccomended species are Evernia mesomorpha Nyl.; Flavoparmelia caperata (L.) Hale, and the combined Physcia aipolia (Ehrh. ex Humb.) Fürnr var. aipolia and P. stellaris (L.) Nyl.
- Visit PNW's Publication Request Page to request a hard copy of this publication.
- 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.
CitationWill-Wolf, Susan; Jovan, Sarah; Amacher, Michael C.; Patterson, Paul L. 2020. Lichen elemental indicators for air pollution in Eastern United States forests; a pilot study in the upper Midwest. Gen. Tech. Rep. PNW-GTR-985. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 178 p.
KeywordsAir pollution, element, forest health, land cover, indicator, lichen, metals, nitrogen, sulfur.
- Chapter 6 - Lichen species to bioindicate air quality in Eastern United States from elemental composition: lessons from the Midwest
- Lichen elemental content bioindicators for air quality in upper Midwest, USA: A model for large-scale monitoring
- Lichen elements as pollution indicators: evaluation of methods for large monitoring programmes
XML: View XML