Elevation rather than season determines the assembly and co-occurrence patterns of soil bacterial communities in forest ecosystems of Mount Gongga

Applied Microbiology and Biotechnology
Bingjian ZhuXiangzhen Li

Abstract

Seasonal dynamics of soil microbial communities may influence ecosystem functions and services. However, few observations have been conducted on the dynamics of a bacterial community assembly across seasons in different elevations in mountain forest ecosystems. In this study, the diversity, compositions, community assembly processes, and co-occurrence interactions of soil bacterial communities were investigated using Illumina sequencing of 16S rRNA genes across different seasons during two consecutive years (2016 and 2017) at two elevational sites in Mount Gongga, China. These two sites included an evergreen broad-leaved forest (EBF, 2100 m a.s.l.) and a dark coniferous forest (DCF, 3000 m a.s.l.). The results showed that bacterial diversity and structure varied considerably between the two elevational sites with only limited seasonal variations. Interannuality had a significant effect on the diversity and structure of soil bacterial communities. The bacterial alpha diversity was significantly higher at site EBF(e.g., OTUs richness, 2207 ± 276) than at site DCF(e.g., OTUs richness, 1826 ± 315). Soil pH, temperature, elevation, and water content were identified as important factors shaping soil bacterial communities in the mount...Continue Reading

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Citations

Nov 7, 2020·Global Change Biology·Futing LiuYuanhe Yang
Jul 1, 2021·The Science of the Total Environment·Congcong ShenYuan Ge

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Datasets Mentioned

BETA
SRP148431

Methods Mentioned

BETA
PCR
electrophoresis
amplicon sequencing

Software Mentioned

MASS
R
FastTree
car
R package stats
PERMANOVA
vegan
FLASH
ANOSIM
QIIME

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