SubjectKey to Lichens on Twigs
Wolseley, James and Alexander
8 pages, col illus, foldout chart.
Unbound | 2003 | #141380 | ISBN: 1851538844
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| $5/€4 approx.
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This key is designed to enable you to identify lichens found on twigs and use them to assess local atmospheric conditions. This key indicates which lichens are acid-tolerant and nitrogen- tolerant (2 of the major pollutants that affect lichens) and also indicates lichens that are associated with unpolluted sites.
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related organisations include:
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