The descriptive ecology of saxicolous lichens in an area of South Merionethshire, Wales

Richard A. Armstrong

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Saxicolous lichen vegetation on Ordovician rock at the mouth of the River Dovey, South Merionethshire, is examined in relation to aspect, slope angle, light intensity, rock porosity, rock microtopography and rock stability. A number of characteristic groups of species are recognized. The environmental factors measured are discussed in some detail. In addition, the wide tolerance of most saxicolous species is emphasized.
Original languageEnglish
Pages (from-to)33-45
Number of pages13
JournalJournal of Ecology
Issue number1
Publication statusPublished - Mar 1974



  • Saxicolous lichen

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