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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
agricultural and biological sciences
Lichens of the Callahan Mine, a copper- and zinc-enriched superfund site in Brooksville, Maine, U.S.A.
Rhodora, Volume 113, No. 953, Year 2011
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Description
Metal-enriched habitats often harbor physiologically distinct biotas able to tolerate and accumulate toxic metals. Plants and lichens that accumulate metals have served as effective indicators of ecosystem pollution. Whereas the diversity of metal-tolerant lichens has been well documented globally, the literature of metal-tolerant lichen communities for eastern North America is limited. We examined the lichen flora of the Callahan Mine, a Cu-, Pb-, and Zn-enriched superfund site in Brooksville, Hancock County, Maine, U.S.A. Through collections along transects across metal-contaminated areas of the mine, we documented 76 species of lichens and related fungi. Fifty species were saxicolous, 26 were terricolous. Forty-three species were macrolichens, 31 were microlichens. Although no globally rare or declining species were encountered at the mine, two regionally rare or declining species, Stereocaulon tomentosum and Leptogium imbricatum, were found. The species found at the Callahan Mine were mostly ecological generalists frequenting disturbed habitats. Two extensively studied Cu-tolerant lichens, Acarospora smaragdula and Lecanora polytropa, and other known Cd-, Cu-, Pb-, and Zn-tolerant taxa, were found at the site. © 2011 by the New England Botanical Club.
Authors & Co-Authors
Rajakaruna, Nishanta
United States, San Jose
San Jose State University
United States, Bar Harbor
College of the Atlantic
Statistics
Citations: 22
Authors: 1
Affiliations: 5
Identifiers
Doi:
10.3119/10-03.1
ISSN:
00354902
Research Areas
Environmental