China Building Northwest Design and Research Institute Co.

Fengcheng, China

China Building Northwest Design and Research Institute Co.

Fengcheng, China
SEARCH FILTERS
Time filter
Source Type

Liu R.,Xi'an University of Technology | Wu W.,Xi'an University of Technology | Zhou X.,Xi'an University of Technology | Yue Z.,China Building Northwest Design and Research Institute Co. | And 2 more authors.
Huanjing Kexue Xuebao/Acta Scientiae Circumstantiae | Year: 2017

The variation of the community structure of planktonic bacteria in Weihe River was investigated by using terminal restriction fragment length polymorphism (T-RFLP) and high-throughput sequencing in normal, dry and wet seasons. The results show that the community structure changed both spatially and seasonally, while temperal effect was more profound. Shannon indices of planktonic bacterial communities were 2.13~2.82, 2.05~2.84 and 2.61~2.91 in normal, dry and wet seasons, respectively. Bacterial communities in the normal season present the greatest spatial variation of diversity (RSD=16.75%), the lowest similarity of community structure (26.8%) and the highest predominant terminal restriction fragments (T-RF=23), while an opposite trend was found in wet season. Bacterial community diversity in Xianyang-Xi'an segment of the Weihe River was relatively lower than those in other segments. Canonical Correspondence Analysis (CCA) and Redundancy Analysis (RDA) indicated that the environmental factors influencing planktonic bacterial community varied with season, while total suspended solids (TSS) always had profound impacts on bacterial community during all these three sampling periods. A total number of 21 bacterial phyla and 26 candidate divisions were detected in the waters collected during the wet season. Proteobacteria and Bacteroidetes were the major bacterial groups and accounted for more than 75% in each sampling site. In wet season, bacterial community structures in the stems of the Weihe River illustrated slight difference, and also showed high similarity to that in the Jinghe River, but distinct difference from that in the Heihe River. © 2017, Science Press. All right reserved.

Loading China Building Northwest Design and Research Institute Co. collaborators
Loading China Building Northwest Design and Research Institute Co. collaborators