Deterministic factors modulating assembly of groundwater microbial community in a nitrogen-contaminated and hydraulically-connected river-lake-floodplain ecosystem

Qiao, Zhiyuan; Sheng, Yizhi; Wang, Guangcai; Chen, Xianglong; Liao, Fu; Mao, Hairu; Zhang, Hongyu; He, Jiahui; Liu, Yingxue; Lin, Yilun; Yang, Ying

doi:10.1016/j.jenvman.2023.119210

Cited by 5 publications

(3 citation statements)

References 128 publications

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“…Compared to the Yellow Sea, the BS is surrounded by land on three sides, forming a bottlenecked semienclosed continental sea, resulting in an unusually slow exchange of its own water, and then, the dispersal of microbial communities in the surface sediments would be more restricted and hindered. Furthermore, slower flow velocities make it easier for microorganisms to adapt and respond to their environment, leading to a greater contribution of deterministic processes to microbial community assembly . Louca et al found that dispersal limitation had limited importance in the open seas, which was consistent with the results of this study.…”

Section: Discussionsupporting

confidence: 91%

“…It is also interesting to note that variable selection was the main deterministic process for DNRA community assembly in the BS and NYS, accounting for 14.29% and 7.14%, respectively. Yan et al 57 suggested that differences in water flow velocities determine the assembly process. Compared to the Yellow Sea, the BS is surrounded by land on three sides, forming a bottlenecked semienclosed continental sea, resulting in an unusually slow exchange of its own water, and then, the dispersal of microbial communities in the surface sediments would be more restricted and hindered.…”

Section: Ecological Assembly Process Of Dnra Microbialmentioning

confidence: 99%

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Neglected Dissimilatory Nitrate Reduction to Ammonium Pathway of Nitrate Reduction in the Chinese Marginal Sea and Its Microbial Community Assembly Driven by Stochastic Processes

Zhao,

Zhang,

et al. 2024

ACS EST Water

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Nitrate reduction as a key process of the marine biological nitrogen cycle has received significant attention, yet little is known about the transformation and fate of nitrate in marginal seas, which bear higher loads of nitrogen pollution. In this study, we took the Bohai and Yellow Sea (BYS) as an example and proposed a large-scale measurement of nitrogen transformations in marginal sea, with the aim of exploring the imprint of nitrate reduction and microbial transformation mechanisms in BYS. Our results showed that dissimilatory nitrate reduction to ammonium (DNRA) made a non-negligible contribution to nitrate reduction in BYS, particularly in the Bohai Sea, with an average DNRA rate up to 8.15 ± 6.30 μmol N/L/h. Pelobacter and Opitutus played important roles as "module hubs" and "connectors" in the DNRA intraspecific network. The moisture content, the concentration of total nitrogen, total sulfur, and NH 4 + −N of sediments, as well as the bottom water temperature and conductivity had a significant correlation with DNRA-dominant and keystone species. However, DNRA microbial community assembly was strongly driven by stochastic processes in the BYS. Specifically, homogeneous dispersal and ecological drift contributed 16.3% and 72.1% to DNRA community assembly in the BYS, respectively. To the best of our knowledge, this is the first report on the assembly mechanism of marine DNRA microbial communities. The patterns and drivers of DNRA processes detected in this study may induce novel insights into nitrate release, retention, and removal in marginal seas.

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Section: Discussionsupporting

confidence: 91%

Section: Ecological Assembly Process Of Dnra Microbialmentioning

confidence: 99%

Neglected Dissimilatory Nitrate Reduction to Ammonium Pathway of Nitrate Reduction in the Chinese Marginal Sea and Its Microbial Community Assembly Driven by Stochastic Processes

Zhao,

Zhang,

et al. 2024

ACS EST Water

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“…Microorganisms play an irreplaceable role in maintaining the stability of freshwater wetland habitat functions (e.g., water purification and biogeochemical cycles, etc.) ( De Mandal et al, 2020 ; Chen M. et al, 2023 ; Qiao et al, 2023 ; Chen et al, 2024 ).…”

Section: Impact Of Microbial Diversity On Functional Stability Of Fre...mentioning

confidence: 99%

Effects of biodiversity on functional stability of freshwater wetlands: a systematic review

Song,

Liang,

et al. 2024

Front. Microbiol.

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Freshwater wetlands are the wetland ecosystems surrounded by freshwater, which are at the interface of terrestrial and freshwater ecosystems, and are rich in ecological composition and function. Biodiversity in freshwater wetlands plays a key role in maintaining the stability of their habitat functions. Due to anthropogenic interference and global change, the biodiversity of freshwater wetlands decreases, which in turn destroys the habitat function of freshwater wetlands and leads to serious degradation of wetlands. An in-depth understanding of the effects of biodiversity on the stability of habitat function and its regulation in freshwater wetlands is crucial for wetland conservation. Therefore, this paper reviews the environmental drivers of habitat function stability in freshwater wetlands, explores the effects of plant diversity and microbial diversity on habitat function stability, reveals the impacts and mechanisms of habitat changes on biodiversity, and further proposes an outlook for freshwater wetland research. This paper provides an important reference for freshwater wetland conservation and its habitat function enhancement.

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Hypoxia exerts greater impacts on shallow groundwater nitrogen cycling than seawater mixture in coastal zone

Dong,

Zhang,

2024

Environ Sci Pollut Res

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Deterministic factors modulating assembly of groundwater microbial community in a nitrogen-contaminated and hydraulically-connected river-lake-floodplain ecosystem

Cited by 5 publications

References 128 publications

Neglected Dissimilatory Nitrate Reduction to Ammonium Pathway of Nitrate Reduction in the Chinese Marginal Sea and Its Microbial Community Assembly Driven by Stochastic Processes

Neglected Dissimilatory Nitrate Reduction to Ammonium Pathway of Nitrate Reduction in the Chinese Marginal Sea and Its Microbial Community Assembly Driven by Stochastic Processes

Effects of biodiversity on functional stability of freshwater wetlands: a systematic review

Hypoxia exerts greater impacts on shallow groundwater nitrogen cycling than seawater mixture in coastal zone

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