ibclogo XVI International Botanical Congess


Abstract Number: 4676
Poster No. = 184


LICHEN FLORA OF GUAM CANYON (NORTHWESTERN CAUCASUS).


S. B. Krivorotov, Kuban State University, 350044, Krasnodar, Russia.


Lichens as an inseparable component of biosphere are not studied sufficiently. Lichenoflora of northern part of Lagonaki mountain area: Guam range (the left bank of the Kurdjips river) and Guam Canyon was studied in 1996-1997. The length of the canyon is 3 km, the depth is about 400 m. The rocky slopes are covered with forests of oak, beech, lime, yew, box, pine and fir. The investigation resulted in discovery of 43 lichen species belonging to 30 genera. The lichens of the Guam Canyon can be classified according to the substrate they are found: on chalkstone - 25 species, on sandstone - 10, ramped stones and mosses - 8 species. The leading place among ecobiomorphs belongs to plagiotropic life forms. The highest number of plagiotropic forms are formed by classes of crustose and foliose lichens (86.1%), umbilicatic, warty- or scaly-fruticose and fruticose constitute only 13.9%. The following lichen genera are among the most numerous of the Guam Canyon: Lecidea, Lecanora, Rhizoplaca, Physcia.


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