Diversity and distribution of soil micro-fungi along an elevation gradient on the north slope of Changbai Mountain

Abstract

Elevational changes in patterns of diversity are important to understanding of the influence of global changes, yet few studies have addressed the distribution of microorganisms, e.g. soil micro-fungi. We studied the diversity of the forest soil micro-fungi in four vegetation belts along an elevation gradient on the north slope of Changbai Mountain in Changbai National Nature Reserve. The four belts were characterized as coniferous–deciduous mixed forest, coniferous forest, Erman’s birch forest, and alpine tundra. We estimated the quantity and distribution of the fungal species in each belt and calculated three indices, viz. Shannon–Wiener diversity (H′), Pielou’s evenness (J′), and Margalef’s abundance (E), to depict fungal species diversity. A total of 932 strains were recorded and identified, representing 53 genera, and 108 species. Among these, Penicillium, Aspergillus, Trichoderma, Mucor, Rhizopus and Fusarium were the dominant genera. With increasing elevation, the quantity of fungi and values of H′, E, and J′ gradually declined.

Keywords

Altitudinal gradient / Distribution / Diversities / Micro-fungi

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