title: [Some rules of soil invertebrate community organization (by the example of Amur Basin mesofauna)].
abstract: Some rules of organization of soil communities in the zone of mixed, Jeddo spruce, and larch taiga as well as forest-steppe in the Amur Basin have been formulated on the basis of the factual data. Abundant resources in the soil layer proved to decrease the competition in favor of neutralism, which allows sister species to occupy the same ecological niche. The stability of soil conditions allows considerable contraction of the realized niche volume, which increases species richness in soil. The biocenotic significance of soil organisms is determined by their biomass, productivity, and functional interchangeability. Ecological redundancy makes the mesofauna community much more resistant to environmental factors. The interaction type can change with environmental conditions. Competition prevails in soil communities outside their ecological optimum. Under these conditions, the community demonstrates the concentration of domination and decreased species richness due to the disappearance of closely related invertebrate species largely in biologically regressing groups.
authors.forename: G N
authors.initials: GN
authors.lastname: Ganin
mesh_terms: D000818:Animals; D044822:Biodiversity; D004784:Environmental Monitoring; D007448:Invertebrates / Q000145:classification / Q000254:growth & development*; D045483:Rivers; D012800:Siberia; D012987:Soil / Q000032:analysis*; D014197:Trees; D053833:Wetlands
chemical_list: D012987:Soil