A study on the effect of bryophytes on nutrient accumulation in surface soil in the Wudalianchi volcanic area

Fuying, 福英; Xueliang, 白学良 Bai; Le, 张乐 Zhang; Gengchen, 毕庚辰 Bi; Chao, 冯超 Feng; Jin, 寇瑾 Kou; Sarula, 萨如拉

doi:10.5846/stxb201306221758

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“…In this study, as the time of soil development and soil weathering increased, the concentrations of DOC, TN, DOC, and DON increased; thus, these concentrations were significantly higher in BK than in LBL. These results are similar to what was reported by Fu et al [33]. However, the concentrations of TP and AP were significantly higher in LBL than in BK.…”

Section: Types Functional Groups Lbl-mean (%) Bk-mean (%)supporting

confidence: 92%

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Comparison of Microbial Diversity of Two Typical Volcanic Soils in Wudalianchi, China

Huang,

Yang,

Cao

et al. 2024

Microorganisms

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Volcanic lava is an excellent model of primary succession, in which basalt-associated microorganisms drive the cycling of different elements such as nitrogen, carbon, and other nutrients. Microbial communities in volcanic soils are of particular interest for study on the emergence and evolution of life within special and extreme conditions. The initial processes of colonization and subsequent rock weathering by microbial communities are still poorly understood. We analyzed the soil bacterial and fungal communities and diversities associated with lava (LBL) and kipuka (BK) sites in Wudalianchi using 16S and ITS rRNA Illumina Miseq sequencing techniques. The results showed that soil physical and chemical properties (pH, MC, TOC, TN, TP, AP, DOC, and DON) significantly differed between LBL and BK. The Shannon, Ace, and Pd indexes of fungi in the two sites showed a significant difference (p < 0.05). The dominant bacterial phyla forming communities at LBL and BK sites were Acidobacteria, Proteobacteria, Actinobacteria, and Basidiomycota, and their differences were driven by Gemmatimonadetes and Verrucomicrobia. The dominant fungal phyla of LBL and BK sites were Ascomycota, Zygomycota, and Rozellomcota, which differed significantly between the two sites. The microbial communities showed extremely significant differences (p < 0.05), with MC, pH, and nitrogen being the main influencing factors according to RDA/CCA and correlation analysis. Microbial functional prediction analysis across the two sites showed that the relative abundance of advantageous functional groups was significantly different (p < 0.05). The combined results drive us to conclude that the volcanic soil differences in the deposits appear to be the main factor shaping the microbial communities in Wudalianchi (WDLC) volcanic ecosystems.

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Section: Types Functional Groups Lbl-mean (%) Bk-mean (%)supporting

confidence: 92%

“…However, the concentrations of TP and AP were significantly higher in LBL than in BK. This confirms that alkali basalt and higher P concentrations are correlated with volcanic materials and the mineral substrate in WDLC volcanoes [33].…”

Section: Types Functional Groups Lbl-mean (%) Bk-mean (%)supporting

confidence: 76%