Bacterial community structure in soils of the Tibetan Plateau affected by discontinuous permafrost or seasonal freezing

Julien Ollivier, Sizhong Yang, Corina Dörfer, Gerhard Welzl, Peter Kühn, Thomas Scholten, Dirk Wagner, Michael Schloter

Research output: Contribution to journalArticlepeer-review

19 Scopus citations

Abstract

In this study, we assessed the abundance and diversity of bacterial communities by 16S rRNA gene-based qPCR and T-RFLP across different soil depths of three sites located on the Tibetan Plateau which are affected by discontinuous permafrost or characterized as seasonally frozen ground. Our data indicates that bacterial community structure was significantly influenced by soil depth mainly at the site affected by seasonal freezing and thawing. In contrast at sites affected by permafrost, diversity pattern of bacterial communities in the top soil and deeper soil layers changed to a far lower extend. This might be related to the fact that the investigated sites were not waterlogged at the permafrost layer, thus no processes that shifts towards bacterial communities, which require anoxic environments, could be expected. Overall, at all sites, labile and stable C as well as N pools act as main drivers for bacterial communities.

Original languageEnglish
Pages (from-to)555-559
Number of pages5
JournalBiology and Fertility of Soils
Volume50
Issue number3
DOIs
StatePublished - Apr 2014
Externally publishedYes

Keywords

  • 16S rRNA gene fingerprinting
  • Bacterial diversity
  • Permafrost
  • Tibetan Plateau

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