Abstract
This study was conducted to determine heavy metals i.e. Lead (Pb) and Cadmium (Cd) concentrations
in lichen along different roads having varied traffic density and to find impact of the metals on its growth in
Miandam valley Swat, Pakistan. Dermatocarpon miniatum species samples were collected from control site,
primary, secondary and tertiary roads and were investigated for Pb and Cd concentrations and reduction in
chlorophyll contents. The data were analyzed using ANOVA, correlation and regression analysis. Significant
(P<0.05) variation in Pb and Cd concentrations in lichens along different roads were found. It was concluded
that traffic density was responsible for Pb and Cd accumulation in lichen. Present findings further highlighted
that there was significant variation in the chlorophyll content which amplify the heavy metal accumulation and
subsequently inhibited growth of lichens
ASADULLAH KHAN, MUHAMMAD AYAZ KHAN, ALIA NAZ, ABDULLAH KHAN, NAUREEN AURANGZEB. (2018) Impact of Air Pollution on Growth of Lichens in Miandam Valley Swat, Pakistan, Biologia – Journal of Biological Society of Pakistan, Volume 64 (I), Volume 64 (I).
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