The spatial and seasonal variations of bacterial community structure and influencing factors in river sediments

Journal of Environmental Management
Mingzhu ZhangLele Sun

Abstract

Studying the composition and structure of bacterial communities in sediments helps to understand the contribution of bacteria to environmental changes and the role of feedback in response to disturbances. However, seasonal changes in bacterial communities of river sediments with different pollution levels and sources have not been clear yet. In this study, we collected sediment samples during the dry season, wet season and level season from 40 sites with various pollution sources in three inflow rivers (Fengle-Hangbu River, Nanfei River and Zhegao River) of Chaohu Lake. Bacterial community compositions were determined based on high-throughput sequencing. The 'Bioenv' in the R package 'Vegan' and redundancy analysis was used to explore the influence of environmental factors on the bacterial community in the river sediments. Results showed that a significant deviation in bacterial communities was found among seasons and rivers. In addition, seasonal dynamics had a greater impact on shaping bacterial communities than rivers with different pollution sources. A higher diversity was found in the wet season as compared to the other seasons. The bacterial diversity was negatively correlated with nutrients (OM, TN, NH4+, IP, OP and TP) ...Continue Reading

Citations

Aug 30, 2020·Water Environment Research : a Research Publication of the Water Environment Federation·Kendrick Jaglal
Nov 21, 2020·The Science of the Total Environment·Ruichang ShenJiakuan Chen
Feb 6, 2021·Applied Microbiology and Biotechnology·Zhongyi LuMeng Li
Jul 30, 2021·Environmental Pollution·Parichaya TiralerdpanichPrinpida Sonthiphand

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