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Continued investigations on epiphytic lichen flora around kvarntorp in naerke sweden


, : Continued investigations on epiphytic lichen flora around kvarntorp in naerke sweden. Acta Phytogeographica Suecica 68: 141-152

The Kvarntorp area is heavily influenced by industry that releasing great quantities of SO2 into the air, formerly also from smouldering ash heaps. Recently, the emmission has diminished because some of the industries have closed. The effect of emmission on the lichen flora was studied in 1952-1953, 1967-1968 and 1979. Many lichens disappeared between the first 2 registrations. Environmental protection measures have been initiated, but the regeneration of the lichen flora has been insignificant, except perhaps for Lecanora conyzaeoides and Kecidea scalaris. The pH of the bark, depressed by SO2', has risen appreciably between 1967 and 1979.

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