Bio-Indicator Lichens of Sikandra Hills of North West Himalaya
Journal Title: Asian Journal of Advanced Basic Sciences - Year 2018, Vol 6, Issue 2
Abstract
During the lichen floristic studies, three hundred specimens of lichens were collected from Sikandra hill, which is situated in Shivalik zone of North West Himalaya. These specimens were then investigated morphochemo- taxonomically and thirty species of lichens have been identified. Out of these, ten species of lichens (viz. Candelaria concolor (Dicks.) Arnold, Heterodermia pseudospeciosa (Kurok.) W.L. Culb, Lecanora chlarotera Nyl, Parmotrema praesorediosum (Nyl.) Hale, Parmotrema tinctorum (Despr. ex Nyl.) Hale, Phaeophyscia hispidula (Ach.) Essl, Physcia stellaris (L.) Nyl., Punctelia subrudecta (Nyl.) Krog, Pyxine subcinerea Stirt) act as bio-indicator. Candelaria concoloris a nitrophile and act as indicator of nitrogen pollution, whereas, Punctelia subrudecta is nitrogen tolerant. Heterodermia pseudospeciosa belong to physcioid lichen community and is toxi-tolerant species. The other seven lichen speciesact as bio-indicator of heavy metal air pollutants (iron, chromium, copper, zinc, lead and nickel. These potential bio-indicator lichen species can be used for monitoring of environmental quality in the study area.
Authors and Affiliations
Monika Thakur, Hem Chander
Keywords
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