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Relative Importance of Deterministic and Stochastic Processes on Soil Microbial Community Assembly in Temperate Grasslands
Liu, Nana; Hu, Huifeng; Ma, Wenhong; Deng, Ye; Wang, Qinggang; Luo, Ao; Meng, Jiahui; Feng, Xiaojuan; Wang, Zhiheng
2021-09
Source PublicationMICROORGANISMS
Volume9Issue:9Pages:-
AbstractChanges in species composition across communities, i.e., beta-diversity, is a central focus of ecology. Compared to macroorganisms, the beta-diversity of soil microbes and its drivers are less studied. Whether the determinants of soil microbial beta-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 beta-diversity of soil microbes. Using variation partitioning and null models, we found that the taxonomic beta-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 beta-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 beta-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 beta-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 beta-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.
Department中国科学院环境生物技术重点实验室
Keywordcommunity composition environmental selection dispersal limitation subsoil microbial diversity rare microbes bacteria archaea
WOS Research AreaMicrobiology
Document Type期刊论文
Identifierhttps://ir.rcees.ac.cn/handle/311016/46147
Collection中国科学院环境生物技术重点实验室
Affiliation1.Peking Univ, Coll Urban & Environm Sci, Inst Ecol, Minist Educ, Beijing 100871, Peoples R China
2.Peking Univ, Coll Urban & Environm Sci, Key Lab Earth Surface Proc, Minist Educ, Beijing 100871, Peoples R China
3.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China
4.Inner Mongolia Univ, Coll Ecol & Environm, Hohhot 010021, Peoples R China
5.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, CAS Key Lab Environm Biotechnol, Beijing 100085, Peoples R China
6.Agricultural Univ, Coll Resources & Environm Sci, Dept Ecol & Ecol Engn, Key Lab Biodive
Recommended Citation
GB/T 7714
Liu, Nana,Hu, Huifeng,Ma, Wenhong,et al. Relative Importance of Deterministic and Stochastic Processes on Soil Microbial Community Assembly in Temperate Grasslands[J]. MICROORGANISMS,2021,9(9):-.
APA Liu, Nana.,Hu, Huifeng.,Ma, Wenhong.,Deng, Ye.,Wang, Qinggang.,...&Wang, Zhiheng.(2021).Relative Importance of Deterministic and Stochastic Processes on Soil Microbial Community Assembly in Temperate Grasslands.MICROORGANISMS,9(9),-.
MLA Liu, Nana,et al."Relative Importance of Deterministic and Stochastic Processes on Soil Microbial Community Assembly in Temperate Grasslands".MICROORGANISMS 9.9(2021):-.
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