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Bacterial Diversity and Communities Structural Dynamics in Soil and Meltwater Runoff at the Frontier of Baishui Glacier No.1, China
Bacterial Diversity and Communities Structural Dynamics in Soil and Meltwater Runoff at the Frontier of Baishui Glacier No.1, China
- Source :
- Microbial Ecology. 81:370-384
- Publication Year :
- 2020
- Publisher :
- Springer Science and Business Media LLC, 2020.
-
Abstract
- Comprehensive knowledge of bacterial ecology mainly in supraglacial habitats is pivotal particularly at the frontier of accelerated glacier retreat. In this study, bacterial diversity and community composition in glacial soil and meltwater runoff at the frontier of Baishui Glacier No.1 were evaluated using high throughput sequencing. Significant variations in the physiochemical parameters formed an ecological gradient between soil and meltwater runoff. Based on the richness and evenness indexes, the bacterial diversity was relatively higher in soil compared with meltwater runoff. Hierarchical clustering and bi-plot ordination revealed that the taxonomic composition of soil samples was highly similar and significantly influenced by the ecological parameters than the meltwater runoff. The overall relative abundance trend of bacterial phyla and genera were greatly varied in soil and water samples. The relative abundance of Proteobacteria was higher in water runoff samples (40.5–87%) compared with soil samples (32–52.7%). Proteobacteria, Firmicutes, and a little part of Cyanobacteria occupied a major portion of water runoff while the soil was dominated by Acidobacteria (6–16.2%), Actinobacteria (5–16%), Bacteroidetes (0.5–8.8%), and Cyanobacteria (0.1–8.3%) besides Proteobacteria and Firmicutes. Higher numbers of biomarkers were found in soil group compared with the water group. The study area is diverse in terms of richness, while community structures are not evenly distributed. This study provides a preliminary understanding of the bacterial diversity and shifts in community structure in soil and meltwater runoff at the frontier of the glacial. The findings revealed that the environmental factors are a significantly strong determinant of bacterial community structures in such a closely linked ecosystem.
- Subjects :
- 0301 basic medicine
Ecology
Soil test
fungi
030106 microbiology
Community structure
Soil Science
Biology
biology.organism_classification
complex mixtures
03 medical and health sciences
030104 developmental biology
Species evenness
Ecosystem
Species richness
Meltwater
Surface runoff
Ecology, Evolution, Behavior and Systematics
Acidobacteria
Subjects
Details
- ISSN :
- 1432184X and 00953628
- Volume :
- 81
- Database :
- OpenAIRE
- Journal :
- Microbial Ecology
- Accession number :
- edsair.doi...........7138478f5384feb1a9cbcbb88069906e
- Full Text :
- https://doi.org/10.1007/s00248-020-01600-y