Changes in structure and biodiversity of soil fauna on forest-steppe catena in Central Russia
1995
Striganova, B.R.
The soil mesofauna of eight forest plots located on the watershed slope was studied. Changes in the content of dominants, trophic structure, fauna abundance, and parameters of invertebrate biodiversity were analyzed for various mesorelief components. Biodiversity and likeness indices were shown to be minimal for undisturbed habitats at the extreme positions of the catena studied (watershed and overfloodland slope parts). Fauna structure was found to correspond to the local dynamics soil processes. At the transitive position, formalized parameters displayed the highest values. In the mesopedobiontic complexes of the middle part of the watershed slope, faunogenetic elements characteristic of the entire landscape zone were significant: representatives of a group of forest-steppe species occuring only in the zonal habitats within the boundaries of the forest-steppe were included in the content of dominants. The groups of invertebrates of secondary forests and forest plantations at the upper and lower positions of the catena displayed high similarity indices to the fauna of the middle part of the catena. These areas can be seen as the channels of soil fauna distribution over the mesorelief profile
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