We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Microbial Diversity in Buried Steppe Paleosols in Relation to Former Pattern of Annual Precipitation.
- Authors
Khomutova, T. E.; Borisov, A. V.
- Abstract
Comparison of microbial diversity in the exposed surface Cambisol and paleosols buried beneath kurgans from 3900–3700 to 2400–2300 cal BC in the desert-steppe zone of the Ergeny Upland was carried out. Chemical and morphological properties of paleosols differed indicating different natural conditions of the time of kurgan erection. Microbial diversity in Ae and Bt horizons was studied by the TRFLP method. Using the RDP database, the taxonomic identification of bacterial phylotypes was carried out. Bacterial communities were diverse and reflected the functioning of soil biota, including plant and fauna pathogens. In the exposed surface soil bacterial diversity in Ae and Bt horizons differed, while in paleosols they were more similar. In the most ancient paleosol buried at 3900–3700 cal BC, bacterial groups were common to other paleosols and/or to the exposed surface soil. In contrast, two paleosols buried at the arid periods of the Bronze Age (second half of 3rd Millennium BC) had more specific bacterial groups, especially the paleosol buried on the peak of climate aridization (2400–2300 cal BC). High microbial biodiversity of buried soils of arid periods is related to the changes in the intra-annual course of precipitation.
- Subjects
PALEOPEDOLOGY; BACTERIAL diversity; ARID soils; STEPPES; PHYTOPATHOGENIC microorganisms; MICROBIAL diversity
- Publication
Eurasian Soil Science, 2022, Vol 55, Issue 11, p1591
- ISSN
1064-2293
- Publication type
Article
- DOI
10.1134/S1064229322110060