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World Journal of Microbiology and Biotechnology

, Volume 31, Issue 11, pp 1683–1689 | Cite as

Within-lake heterogeneity of environmental factors structuring bacterial community composition in Lake Dongting, China

  • Yuan Niu
  • Hui YuEmail author
  • Xia Jiang
Original Paper

Abstract

Within-lake heterogeneity of bacterial community composition (BCC) was investigated in the large and shallow regulating Lake Dongting. Samples were collected at 13 sites located in different areas of the lake. PCR-denaturing gradient gel electrophoresis (DGGE) and redundancy analysis (RDA) were used for revealing spatial distribution of BCC and the relationships between BCC and environmental variables. The DGGE banding patterns revealed a remarkable spatial heterogeneity which was closely related to their geographical positions. RDA result demonstrated that TP and TN, as well as Secchi depth, were the three most influential factors, responsible for a major part of the observed variation in BCC. Total bacterial abundances were significantly higher in Eastern Dongting due to high TP and suspended solids. In conclusion, bacterial community diversity in Lake Dongting was mainly shaped by within-lake heterogeneity of nutrient and transparency.

Keywords

Bacterial community composition (BCC) Within-lake heterogeneity Denaturing gradient gel electrophoresis (DGGE) Redundancy analysis (RDA) Lake Dongting 

Notes

Acknowledgments

We thank the editor and anonymous reviewers for their constructive suggestions and professional editing. This research was supported by National Basic Research Program of China (2012CB417004). We are grateful to Zhongrui Zou, Yan Jiang for the help on sample collection.

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Copyright information

© Springer Science+Business Media Dordrecht 2015

Authors and Affiliations

  1. 1.Research Center for Lake Eco-environmentChinese Research Academy of Environmental SciencesBeijingChina

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