SEASONAL DYNAMICS OF COMPOSITION AND STRUCTURE OF SOIL MACROFAUNA IN INDIGENOUS COMMUNITIES TERRACE OF THE IRTYSH
Conducted study of the seasonal dynamics of composition and structure of soil invertebrate communities in native terrace of the Irtysh river. It is revealed that seasonal fluctuations in the number and mass is characteristic almost for all groups of the macrofauna, but is especially pronounced among Oligochaeta, Aranei, Coleoptera and Diptera. In all communities the maximum concentration of invertebrates observed in the autumn, at this time in the soil is fully formed, the outgoing winter composition. Revealed that, despite having the same effect of weather conditions, dynamics of the density of the populations of most invertebrates do not have a common orientation. Great, if not decisive influence on the composition and seasonal variations in abundance of macrofaunaintra biotopical factors: vegetation cover (power litter, opacity, floristic diversity) and hydrothermal regime of the soil, the most dynamic in open habitats. The important role played by environmental and biological aspects of invertebrates, such as the length of the life cycles, massive outbreaks of the population, are confined to habitats and food selectivity.