Laaksovirta, K/ Olkkonen, H 1979: Effect of air pollution on epiphytic lichen vegetation and element contents of a lichen and pine needles at Valkeakoski, S Finland. - Annales Botanici Fennici16: 285-296. [RLL List # 109-69 / Rec.# 10826] Keywords: FINLAND/ AIR POLLUTION/ EPIPHYTE/ ELEMENT CONTENT/ VANADIUM/ IRON/ SULFUR/ CALCIUM/ TITANIUM
Abstract: 10 figures. ["The most reliable indices of pollutant substances originating from combustion of fuel oil and the wood pulp industry were the sulphur and vanadium contents of the lichen, while the calcium, titanium and iron concentrations of the lichen gave a good idea of the distribution of dust raised from the roads by traffic."]
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