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Anthropogenic Effects on the Distribution of Four Epiphytic Lichens in Chiang Mai-Lamphun Basin, Thailand


Paper Type 
Contributed Paper
Title 
Anthropogenic Effects on the Distribution of Four Epiphytic Lichens in Chiang Mai-Lamphun Basin, Thailand
Author 
Nattakarn Sransupphasirigul*, Wanaruk Saipunkaew, Pitchaya Mungkornasawakul, Boontarika Srithai and Chitsupang Kheawsalab
Email 
s.natkarn@gmail.com
Abstract:

Lichens are widely known as indicators because of their sensitivity to changes in environmental

qualities. This study investigated the effects of human activities on lichens in the Chiang Mai-Lamphun
basin, Thailand. Lichen frequencies were surveyed in 47 study sites using a 20 x 50 cm2 grid frame
divided into 10 small square units. The surveying frame was put on the tree trunk at 100 cm above
ground level to count the frequency of each lichen species. Four epiphytic lichen species were selected,
and their distributions were mapped. These maps illustrated that each species has different ranges
of tolerance to anthropogenic effects. Hyperphyscia adglutinata (Flörke) H. Mayrhofer & Poelt and
Pyxine cocoes (Sw.) Nyl. showed a wide distribution. P. cocoes was abundant in areas with a high degree
of human activities, while H. adglutinata was found particularly along main roads and in crowded
residential areas. Dirinaria picta (Sw.) Clem. & Shear was observed in high frequency in areas with low
human activities, while Peltula corticola Büdel & R. Sant. exhibited the narrowest distribution and was
present in areas where high anthropogenic impact and high traffic occurred.
Start & End Page 
382 - 394
Received Date 
2020-02-27
Revised Date 
2020-08-31
Accepted Date 
2020-09-25
Full Text 
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Keyword 
bioindicator, biomonitoring, distribution map, land use
Volume 
Vol.48 No.2 (March 2021)
DOI 
Citation 
Sransupphasirigul* N., Saipunkaew W., Mungkornasawakul P., Srithai B. and Kheawsalab C., Anthropogenic Effects on the Distribution of Four Epiphytic Lichens in Chiang Mai-Lamphun Basin, Thailand, Chiang Mai Journal of Science, 2021; 48(2): 382-394.
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