Mesofauna in soils of the ivolga depression (Western Transbaikal region)

Autor: V. I. Ubugunova, I. N. Lavrent’eva, T. P. Nikheleeva, L. L. Ubugunov
Rok vydání: 2007
Předmět:
Zdroj: Eurasian Soil Science. 40:866-874
ISSN: 1556-195X
1064-2293
DOI: 10.1134/s1064229307080091
Popis: Mesofauna of chestnut, meadow-chestnut, meadow alluvial, clayey mucky-gley swampy alluvial soils, and hydromorphic solonchaks has been studied within the Ivolga depression. Variations in the population density of soil invertebrates (from 29.9 to 284.3 specimens per m2) are controlled by the particular soil ecological conditions. Dominant mesofauna species are morphologically and physiologically adapted for living near the soil surface. About 85–90% of them are allocated to the uppermost 10-cm-thick soil layer. The hydrothermic regime (r = 0.94) and the low bioproductivity of phytocenoses (r = 0.74) are the major factors limiting the mesofauna functioning in soils of the Ivolga depression. The biocenotic similarity of the invertebrate complexes in the chestnut, meadow-chestnut, and solonchak soils and in the alluvial swampy and meadow soils is revealed. The highest diversity of the ecological groups of soil mesofauna is seen in the clayey mucky-gley swampy alluvial soils.
Databáze: OpenAIRE
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