Microbial communities of alluvial soils in the Volga River delta

Autor:	M. A. Egorov, N. A. Sal’nikova, Z. Tyugai, L. M. Polyanskaya, A. N. Sal’nikov
Rok vydání:	2009
Předmět:	chemistry.chemical_classification Soil organic matter Soil Science Biomass Soil classification Mineralization (soil science) Humus Agronomy chemistry Microbial population biology Environmental science Organic matter Gleysol Earth-Surface Processes
Zdroj:	Eurasian Soil Science. 42:56-61
ISSN:	1556-195X 1064-2293
Popis:	The number and biomass of the microbial community in the upper humus horizon (0–20 cm) were determined in the main types of alluvial soils (mucky gley, desertified soddy calcareous, hydrometamorphic dark-humus soils) in the Volga River delta. Fungal mycelium and alga cells predominate in the biomass of the microorganisms (35–50% and 30–47%, respectively). The proportion of prokaryotes in the microbial biomass of the alluvial soils amounts to 2–6%. No significant seasonal dynamics in the number and biomass of microorganisms were revealed in the alluvial soils. The share of carbon of the microbial biomass in the total carbon content of the soil organic matter is 1.4–2.3% in the spring. High coefficients of microbial mineralization and oligotrophy characterize the processes of organic matter decomposition in the alluvial soils of the mucky gley, desertified soddy calcareous, and hydrometamorphic dark humus soil types.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::8e2b2c26733af25a6dbe556e8f59e311 https://doi.org/10.1134/s1064229309010074 Zobrazit plný text záznamu Full text from SpringerLink