Shifts of sediment bacterial community and respiration along a successional gradient in a typical karst plateau lake wetland (China)

Xia, Pinhua; Zhang, Jian; Wang, Zhibin; Yu, Lifei

doi:10.1007/s00343-020-0073-y

Cited by 3 publications

(1 citation statement)

References 43 publications

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“…Comparative studies have provided substantial support for the role of microbial community composition in influencing sediment CH 4 and CO 2 production (Torres et al, 2011;Ji et al, 2016;Bertolet et al, 2019;Xia et al, 2020;Yang et al, 2020). For example, in north temperate lakes, community composition of the non-methanogen community was significantly related to lake CH 4 production after accounting for variation in primary productivity across 14 lake sediments (Bertolet et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Lake Sediment Methane Responses to Organic Matter are Related to Microbial Community Composition in Experimental Microcosms

Bertolet

Koepfli

Jones

2022

Front. Environ. Sci.

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Lake sediment microbial communities mediate carbon diagenesis. However, microbial community composition is variable across lakes, and it is still uncertain how variation in community composition influences sediment responses to environmental change. Sediment methane (CH4) production has been shown to be substantially elevated by increased lake primary productivity and organic matter supply. However, the magnitude of the response of CH4 production varies across lakes, and recent studies suggest a role for the microbial community in mediating this response. Here, we conducted sediment incubation experiments across 22 lakes to determine whether variation in sediment microbial community composition is related to the response of sediment CH4 production to increases in organic matter. We sampled the 22 lakes across a gradient of pH in order to investigate lakes with variable sediment microbial communities. We manipulated the incubations with additions of dried algal biomass and show that variation in the response of CH4 production to changes in organic matter supply is significantly correlated with metrics of sediment microbial community composition. Specifically, the diversity and richness of the non-methanogen community was most predictive of sediment CH4 responses to organic matter additions. Additionally, neither metrics of microbial abundance nor preexisting organic matter availability explained meaningful variation in the response. Thus, our results provide experimental support that differences in sediment microbial communities influences CH4 production responses to changes in organic matter availability.

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Section: Introductionmentioning

confidence: 99%

Lake Sediment Methane Responses to Organic Matter are Related to Microbial Community Composition in Experimental Microcosms

Bertolet

Koepfli

Jones

2022

Front. Environ. Sci.

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Responses of sediment nitrogen forms and bacterial communities to different aquatic nitrogen conditions in three submerged macrophyte-type ecological treatment systems

Zhou

Cheng

et al. 2023

Environmental Research

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Artificial Cultivation of Aquatic Plants Promotes Nitrogen Transformation and the Abundance of Key Functional Genes in Agricultural Drainage Ditch Sediments in the Yellow River Irrigation Area in China

Hong,

He,

Liu

et al. 2024

Land

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Excess nitrogen in agricultural drainage poses a serious threat to the water quality safety of the Yellow River basin. Utilizing aquatic plants to modify the rhizosphere microbial community structure and facilitate nitrogen transformation is a crucial strategy for mitigating regional water eutrophication. We here compare key processes of nitrogen transformation occurring in the rhizosphere of sediments of a ditch artificially planted with a mix of species (Phragmites australis, Typha orientalis, Nymphaea tetragon) with the rhizosphere of a ditch occupied by naturally occurring aquatic vegetation, dominated either by P. australis or T. orientalis. Our results revealed a species effect, with an increased denitrification rate (DR) and dissimilatory nitrate reduction to ammonium rate (DNRAR) in the cultivated ditch for P. australis, compared to the naturally occurring T. orientalis vegetation. The nitrogen fixation rate (NFR) increased in the artificial setting with T. orientalis in comparison to natural P. australis vegetation. The richness of the bacterial community and the relative abundances of Bacteroidota, Firmicutes, and Geobacter were significantly greater in the rhizosphere of the artificially cultivated ditch due a greater availability in nitrogen and organic carbon. In the artificially cultivated ditch, the dominant functional genes affecting DRNARs in the rhizosphere sediments of P. australis were nrfC and nrfA, whereas DRs were driven mainly by norB and napA, which were influenced by the nitrogen and carbon levels. The dominant functional genes affecting NFRs in the rhizosphere sediments of T. orientalis were nifD, nifK, and nifH. Our results provide a scientific basis for the use of aquatic plants for mitigating excess nitrogen levels in agricultural drainage.

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Shifts of sediment bacterial community and respiration along a successional gradient in a typical karst plateau lake wetland (China)

Cited by 3 publications

References 43 publications

Lake Sediment Methane Responses to Organic Matter are Related to Microbial Community Composition in Experimental Microcosms

Lake Sediment Methane Responses to Organic Matter are Related to Microbial Community Composition in Experimental Microcosms

Responses of sediment nitrogen forms and bacterial communities to different aquatic nitrogen conditions in three submerged macrophyte-type ecological treatment systems

Artificial Cultivation of Aquatic Plants Promotes Nitrogen Transformation and the Abundance of Key Functional Genes in Agricultural Drainage Ditch Sediments in the Yellow River Irrigation Area in China

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