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Air quality biomonitoring with epiphytic lichens and mosses

In recent decades increasing attention is paid to biomonitoring of air quality. In this paper epiphytic mosses and lichens were chosen as bioindicators to estimate the level of atmospheric pollution. The paper presents the results of elemental analysis, as well as analysis of the carbon and nitrogen stable isotope ratios in mosses and lichens of Tomsk and Prokopyevsk (Russia, Western Siberia). The mean values of lichens δ13C for Prokopyevsk and Tomsk are ca. –26‰ and –27‰, respectively. The mean values of δ13C in mosses are similar for both cities (ca. –30‰). However, δ13C of some mosses samples collected in Prokopyevsk have lighter values (ca. –34‰), probably due to the mine methane influence. The mean δ15N values for mosses and lichens for Tomsk (+2.1 and –1.3‰, respectively) is heavier compared to the mean δ15N values for Prokopyevsk (δ15N for mosses = –1‰ and δ15N for lichens = –5‰). Based on this, it can be concluded that Tomsk has a large anthropogenic load in terms of emissions of nitrogen-containing compounds.