Predictors of Soil Microbial Community Structure and Functioning

A special issue of Microorganisms (ISSN 2076-2607). This special issue belongs to the section "Environmental Microbiology".

Deadline for manuscript submissions: closed (30 September 2022) | Viewed by 5909

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Department of Ecology, Swedish University of Agricultural Sciences, Ulls väg 16, 756 51 Uppsala, Sweden
Interests: biogeography; mycorrhiza; microbial ecology; biotic interactions; fungi; metagenomics

Special Issue Information

Dear Colleagues,

Microbes (including bacteria, fungi, protists, and archaea) drive nutrient cycling and other key ecosystem functions in terrestrial ecosystems. Our knowledge about the factors determining the structure and function of microbial communities has been growing due to rapid advances in molecular methods. Although accumulating evidence suggests that climate and soil factors contribute to the structuring of microbial communities, we still know little about the effects of biotic factors and how such effects are translated into microbial functions.  

For this Special Issue of Microorganisms, we invite authors to submit articles on the predictors of microbial communities. This topic includes microbial community ecology, microbial biogeography, and plant–soil interactions.

Dr. Mohammad Bahram
Guest Editor

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Published Papers (1 paper)

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Research

17 pages, 38342 KiB  
Article
Relative Importance of Deterministic and Stochastic Processes on Soil Microbial Community Assembly in Temperate Grasslands
by Nana Liu, Huifeng Hu, Wenhong Ma, Ye Deng, Qinggang Wang, Ao Luo, Jiahui Meng, Xiaojuan Feng and Zhiheng Wang
Microorganisms 2021, 9(9), 1929; https://doi.org/10.3390/microorganisms9091929 - 10 Sep 2021
Cited by 38 | Viewed by 5167
Abstract
Changes in species composition across communities, i.e., β-diversity, is a central focus of ecology. Compared to macroorganisms, the β-diversity of soil microbes and its drivers are less studied. Whether the determinants of soil microbial β-diversity are consistent between soil depths and between abundant [...] Read more.
Changes in species composition across communities, i.e., β-diversity, is a central focus of ecology. Compared to macroorganisms, the β-diversity of soil microbes and its drivers are less studied. Whether the determinants of soil microbial β-diversity are consistent between soil depths and between abundant and rare microorganisms remains controversial. Here, using the 16S-rRNA of soil bacteria and archaea sampled at different soil depths (0–10 and 30–50 cm) from 32 sites along an aridity gradient of 1500 km in the temperate grasslands in northern China, we compared the effects of deterministic and stochastic processes on the taxonomic and phylogenetic β-diversity of soil microbes. Using variation partitioning and null models, we found that the taxonomic β-diversity of the overall bacterial communities was more strongly determined by deterministic processes in both soil layers (the explanatory power of environmental distance in topsoil: 25.4%; subsoil: 47.4%), while their phylogenetic counterpart was more strongly determined by stochastic processes (the explanatory power of spatial distance in topsoil: 42.1; subsoil 24.7%). However, in terms of abundance, both the taxonomic and phylogenetic β-diversity of the abundant bacteria in both soil layers was more strongly determined by deterministic processes, while those of rare bacteria were more strongly determined by stochastic processes. In comparison with bacteria, both the taxonomic and phylogenetic β-diversity of the overall abundant and rare archaea were strongly determined by deterministic processes. Among the variables representing deterministic processes, contemporary and historical climate and aboveground vegetation dominated the microbial β-diversity of the overall and abundant microbes of both domains in topsoils, but soil geochemistry dominated in subsoils. This study presents a comprehensive understanding on the β-diversity of soil microbial communities in the temperate grasslands in northern China. Our findings highlight the importance of soil depth, phylogenetic turnover, and species abundance in the assembly processes of soil microbial communities. Full article
(This article belongs to the Special Issue Predictors of Soil Microbial Community Structure and Functioning)
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