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Other research aims to obtain data on vegetation analysis of species lichens in Aek Nauli-Forest and TAHURA, Karo North Sumatera. This study transect method, determination of tree stands in purpossive sampling with exploratory surveys and inventories, is descriptive. The results showed a high diversity and obtained 22 species of lichens, the 19 species in Aek Nauli and 14 species in TAHURA. Thallus lichens forms encountered on two locations: crustose, foliose and fruticose. Data analysis Relative Density (RD) of Vegetation Relative Frequency (FR) Relative Dominance (RDm) and Importance Value (IV), the highest for Aek Nauli consecutive Pyrhospora quernea the type (25.56%, 15.52%; 25,56% and 68.63%). Data analysis of RD; FR; RDm and IV for the highest consecutive Tahura the type of Pertusaria amara (24.80%, 21.05%, 24.80% and 70.64%). Almost all types of lichens both locations showed clumped distribution pattern and one type which shows a random distribution pattern. Through measurements of physico-chemical factors on the standing tree Styrax sp. Aek Nauli obtained in air temperature, air humidity and light intensity on average (22.90C, 60%; 827.1 Joules). While in the TAHURA, has a temperature, humidity and light intensity on average (21.20C; 77.9%, 894.4 Joules).

proceedings of the proceedings of the 5th annual international seminar on trends in science and science education, aistsse 2018, 18-19 october 2018, medan, indonesia

Analysis of Vegetation Lichens of Corticolous on the Styrax Sp. in Aek Nauli Forest Simalungun and Tahura, Karo North Sumatera, Indonesia