Abstract
Air pollution detection in Dimitrovgrad has not been done yet. In this work different lichen have been used as a bioindication to establish different air pollution levels. At 18 investigated points 22 lichen taxa have been found. Using the Index of Atmospheric Purity (IAP) it has been found that there are 3 different air pollution zones in Dimitrovgrad: 'lichen desert', 'transitional' and 'normal zone'. The most sensitive lichen taxa in Dimitrovgrad are Evernia prunastra, Ochrolechia pallescens, Parmelia sulcata, and Physcia tenella and the most tolerant are Phaeophyscia orbicularis, Physcia adscendens, Physconia distorta, Physconia grisea, and Xanthoria parietina. .
Highlights
The quality of air quality is getting worse all over the world
Bioindication of air pollution by using lichens has not been done in Dimitrovgrad until now
Dimitrovgrad is an urban settlement in southeastern Serbia, near the border with the Republic of Bulgaria
Summary
The quality of air quality is getting worse all over the world. The presence and absence of lichens and different species around different pollution sources has been used for problems connected to air pollution. Many scientists have been dealing with this problem (Henderson, 1991, Henderson, 1993, Henderson, 1994, Nali et al, 2007, Jovan, 2008). Interest in this type of investigation started in Serbia in last decade of 20th century ( Cvijan, Stamenkovic, 1996, Savić, 1998, Savić, Tibell, 2006, Stamenković, 1997). Dimitrovgrad is an urban settlement in southeastern Serbia, near the border with the Republic of Bulgaria. It has a population of around 8 000. The o mean annual air temperature is 9.7 C, the mean annual air humidity is 72% and the mean annual rainfall is only 581.2 mm. (Fig. 1) The most frequent winds in Dimitrovgrad are southeasterly and easterly (Figure 2) Industry in Dimitrovgrad is not well developed and traffic has a relatively high intensity
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