Gaigysh I., Tarasova V., Markovskaja E. Effect of forest fragmentation on the epiphytic lichen cover of pine trunks on the example taiga town // Principy èkologii. 2012. № 2. P. 65‒71. DOI: 10.15393/j1.art.2012.882


Issue № 2

Original research

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Effect of forest fragmentation on the epiphytic lichen cover of pine trunks on the example taiga town

Gaigysh
   Irina Sergeevna		Petrozavodsk State University, Petrozavodsk, Lenin av., 33, irinabikera@yandex.ru
Tarasova
   Viktoria 		Petrozavodsk State University, Petrozavodsk, Lenin av., 33, vika18@sampo.ru
Markovskaja
   Evgenyja 		Petrozavodsk State University, Petrozavodsk, Lenin av., 33, volev@sampo.ru
Keywords:
forest fragmentation
epiphytic lichens
pine
town		 Summary: The main characteristics of epiphytic lichen cover on pine trunks depending on the area of natural pine forest in Kostomuksha (north Karelia) were analysed. The town of Kostomuksha was built so that to provide the conservation of forest sites. 56 fragments with the area of 0.04 - 6.13 ha were studied. The average area of fragment is 0.62 ha, with 49 fragments (88%) having the area less than 1 ha. Biodiversity and lichen cover were studied in the each fragment with using framework 10x20 cm. 1792 sample plots were made on 448 trees. The total lichens cover varies from 0 to 85%,averaging 10%. 25 species of lichens were found. The number of species in the sample plots varies from 0 to 9. Dominant species found are Hypogymnia physodes, Parmeliopsis ambigua, P. hyperopta, Imshaugia aleurites, Cladonia. Species Alectoria sarmentosa, Cladonia macilenta, Pseudevernia fufruraceae, Bryoria fremontii were less common. It was shown that the main parameters of lichen cover are closely related to the size of the area left in the city forest fragments. The maximum values of species diversity and cover of lichens were found in the fragments of more 1-2 hectares.

© Petrozavodsk State University
Reviewer: N. Fadeeva
Reviewer: A. V. Korosov
Received on: 05 June 2012
Published on: 10 July 2012

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