Influence of Environmental Factors on the Structure of Soil Microscopic Fungi of Tropical Forests in Vietnam
A. V. ALEXANDROVA1, I. I. ALDOBAEVA2, K. A. KALASHNIKOVA1, A. N. KUZNETSOV2,3
1M. V. Lomonosov Moscow State University, 19192, Moscow, Lenin’s Gory, 1
2Joint Vietnam-Russian Tropical Research and Technological Centre, Vietnаm, Hanoy, Nguyen Van Huen, Ngia Do, Cau Zai
3A. N. Severtsov Institute of ecology and evolution, RAS, 119071, Moscow, Leninsky ave., 33
Keywords: почвенные микроскопические грибы, распространение, видовое разнообразие, экологические факторы, тропические леса, экология, soil microscopic fungi, distribution, species diversity, ecological factors, tropic forests, ecology
Abstract
The results of a multi-year complex study of species diversity, features and patterns of distribution, substrate colonization and ecology of soil microscopic fungi in the lowland, piedmont and mountain monsoon rain forests of Vietnam are presented for the first time. In 97 forest habitats studied within 13 specially protected areas of Vietnam, located in the northern, central and southern parts of the country, 510 species of micromycetes from 148 genera were identified. The influence of environmental factors (climatic features, relief, soils, forest types, and others) on the formation of complexes of micromycetes was analyzed, as a result the dependence of the number of colony forming units (CFU) on the type of the substrate and season (wet/dry) was established: in dry season (October - March) significantly more species were detected ( p < 0.05) compared with the wet one, and many species were associated with specific plant species. Indicators of species diversity decrease with increasing altitude above sea level ( p < 0.01). In this case, the ratio of the taxonomic groups of micromycetes naturally changes. A latitudinal-zonal trend is revealed in the change of the species composition of microscopic fungi determined by a combination of environmental factors.
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