Vertical distribution of macrolichens on the birches near Petropavlovsk-Kamchatskii

Abstract

Species composition and frequency of occurrence of macrolichens on Betula ermanii and B. platyphylla are studied. Frequency of occurrence of most species of these lichens is less than 10%. Frequency of occurrence of some species on different trunk levels was considerably different. Usually, frequency of occurrence of macrolichens on B. ermanii was higher than on B. platyphylla. Distribution of ten dominant species on different trunk height was studied applying one-factored ANOVA. Cladonia coniocraea, Parmelopsis sp., and Vulpicida pinastri occur preferably on trunk bottoms. Cetraria sepincola was homogeneously on trunks of both birch species. Hypogymnia physodes, Parmelia squarrosa, and P. sulcata are definitely confined to the middle part of trunks and branches only on B. ermanii. On B. platyphylla, these species are homogeneously distributed.