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Lichen Recolonization Following Air Quality Improvement

Ray E. Showman
The Bryologist
Vol. 84, No. 4 (Winter, 1981), pp. 492-497
DOI: 10.2307/3242556
Stable URL: http://www.jstor.org/stable/3242556
Page Count: 6
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Lichen Recolonization Following Air Quality Improvement
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Abstract

Air quality improvement near a coal-fired power plant led to recolonization of Parmelia caperata (L.) Ach. in a pollution-induced void area. Recolonization was first observed about four years after pollution abatement. Least-affected sites, i.e. near the edge of the original void, were first to recover while most-affected sites were slowest to recover. After eight years of improved air quality, the distribution of P. caperata has returned to near normal. Lichen bio-monitoring is useful not only to detect the effects of poor air quality but to document air quality improvement as well.

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