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At the modern stage of development of systematics of grasses, one may assume that in high mountainous regions of Siberia there are 18 species and 5 subspecies of the genus Poa. The core of the group is composed of high-mountainous  (P. smirnovii Roshev. S. L., P. alpigena subsp. sobolevskiana (Gudoschn.) Tzvel., P. vereczaginii Tzvel., P. attenuata subsp. attenuata (Trin.) Tzvel., P. attenuata subsp. tchuensis (serg.) Olon., P. rangkulensis Ovez et Czuk., P. glauca subsp. litvinoviana (Ovez.) Tzvel., P. glauca subsp. tristis (Trin.) Olon., P. altaica Trin., P.ircitica Roshev.) and arctic-mountainous (Poa alpigena subsp. alpigena, P. alpina) species. Species widespread in different zones are also found in Siberia. These are arctic P. arctica R. Br., P. tolmatchevii Roshev., P. paucispicula Scribn. et Mewrr., P. pseudoabbreviata Roshev found in the mountains of South Siberia as relicts, P. sibirica subsp. sibirica (Roshev) Tzvel. Existing as forest and mountainous races, the montane-steppe P. tianshanica (Regel.) Hack ex O. Fedtsch. and  the plurizonal P. supina Schrad., P. annua L., P. pratensis L. s. str., and P. palustris L.

As a result of comprehensive studies carried out in 1984

For the first time, a complete conspect of club fungi including 94 species belonging to three orders

Using the thematic (landscape, geobotanic, soil, agroclimatic) maps of factual habitats of plants and animals, the authors have developed a method for mapping the refugia of the Baikal region. The drawn-up map reflects not only the already known refugia, but also territories with their probable presence. In the present work 4 groups and 9 subgroups of refugia are considered, and the question of protection of unique plants and animals is raised.

The Altay-Sayani mountain region was demonstrated to have a unified forest-steppe complex. This complex includes mesophilous and xerophilous meadow steppes, petrophilous steppes, mesophilous and xerophilous forests, forest meadows. The basis of the forest-steppe belt floristic complex is formed with three floristic nuclei. The floristic nuclei of meadow steppes and mesophilous forests is associated with zone habitats, the floristic nucleus of petrophilous steppes is due to the edaphic factors

The dependence of flora and fauna diversity on the geochemical characteristics of territories is analyzed. In mountainous landscapes of the Hubsugul and East Sayan, in geochemical fieldfs, highly productive ecosystems with peculiar composition are formed. Dependence of species on the landscape geochemistry is an important theoretical problem that requires further study.

The steppe and forest meadows of the Altay-Sayani foret-steppe and subtaiga belts are considered in this article.The analysis of constant species of the steppe, forest and secondary meadows is carried out. Zone-belt and sector features of the steppe meadow coenoflora are revealed.

A database developed at the Institute of Theoretical and Applied Mechanics of the Siberian Branch of the Russian Academy of Sciences is described, which is designed to store both experimental and numerical results in the field of aerodynamics. The system is constructed using the client-server technology. The software operates on various platforms (Linux, Windows). Experimental data are compared with numerical simulations performed using the system proposed.

The peculiar features of fluctuation diagrams are analysed at subsonic and supersonic velocities of the flow for acoustic disturbances propagating at some angle to the flow. It is shown that location of minimum of the fluctuation diagram for an acoustic mode depends on the direction of acoustic wave propagation; the diagram is either a line segment or consists of two sections in the form of letter V with its vertex on an abscissa axis. At subsonic flow velocities a cross point of the fluctuation diagram for the acoustic mode with the abscissa axis is always farther from a coordinate origin than the similar point for the vortical mode. At supersonic velocities an inverse picture is observed. The relations between the fluctuation diagram and the acoustic disturbance characteristics have been obtained. It is found that the V-formed fluctuation diagrams  at supersonic velocities correspond to the acoustic disturbance sources moving in the flow only at subsonic difference of the flow velocities and sources. In case when the coordinate of a cross point of the diagram continuation with the abscissa axis is negative, a linear diagram of fluctuations can correspond to both subsonic and supersonic differences of the flow velocities and sources.

The gas oscillations arising in a planar duct under the excitation of a wall part are studied numerically on the basis of the solution of an aeroelasticity problem. A spatial localization of transverse and streamwise waves has been revealed computationally, and the character of the power spectra of pressure oscillations upstream and downstream of the excitation region has been established.