Abundant and rare bacterial taxa structuring differently in sediment and water in thermokarst lakes in the Yellow River Source area, Qinghai-Tibet Plateau

Z, Ren; Zhang, C; X, Li; Ma, Kewei; Feng, Kexin; Zhang, Z; Cui, Bo

doi:10.1101/2021.05.26.445882

Cited by 4 publications

(1 citation statement)

References 77 publications

(112 reference statements)

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“…Only two studies have reported bacterioplankton in lake waters within YRH. Previous research found that the bacterial communities in water have a significant correlation with water conductivity, total nitrogen, and total phosphorus in the thermokarst lakes from the YRH region (Ren et al, 2021a).…”

Section: Introductionmentioning

confidence: 90%

Differences in bacterial diversity, composition, and community networks in lake water across three distinct regions on the Qinghai-Tibet Plateau

Wang

Huang

Zhang

et al. 2022

Front. Environ. Sci.

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We analyze bacterial composition, diversity, geographical distribution, and their community networks in lake water in three adjacent regions on the Qinghai-Tibet Plateau (QTP). Results show that bacterial alpha-diversity indices are much lower in the Hoh Xil (HX) than that in the Yellow River Headwater (YRH) regions and the Qaidam (QD) region. The dominant phyla in QD and YRH are Proteobacteria which account for 42.45 % and 43.64 % of all detected phyla, while Bacteroidetes is the dominant bacterial taxa in HX (46.07 %). Redundancy analysis results suggest that the most important factors in driving bacterial community composition in the three regions are altitude (QD), total nitrogen (YRH), and pH (HX), respectively. Both environmental factors and spatial factors significantly affect the bacterial community composition in QD and HX, while only environmental factors are the major drivers in YRH. Finally, network analyses reveal that the bacterial network structure in QD is more complex than those in YRH and HX, whereas the bacterial network in HX is the most stable, followed by those in QD and YRH.

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Section: Introductionmentioning

confidence: 90%

Differences in bacterial diversity, composition, and community networks in lake water across three distinct regions on the Qinghai-Tibet Plateau

Wang

Huang

Zhang

et al. 2022

Front. Environ. Sci.

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Differences of bacterial community co-occurrence network and assembly processes between sediment and water in lakes on the Qinghai-Tibet Plateau

Dandan,

Yuefei,

Haijiao

2023

Journal of Lake Sciences

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Bacterial Communities Present Distinct Co-occurrence Networks in Sediment and Water of the Thermokarst Lakes in the Yellow River Source Area

Ren

Cheng

et al. 2021

Front. Microbiol.

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Thermokarst lakes are a ubiquitous and important landscape feature in cold regions and are changing tremendously due to the accelerated climate change. In thermokarst lakes, sediment and water are two distinct but highly interconnected habitats, harboring different bacterial communities in terms of taxonomic composition. However, the co-occurrence networks of these bacterial communities remain unclear. Here, we investigate the co-occurrence ecological networks of sediment and water bacterial communities for thermokarst lakes in the Yellow River Source Area on the Qinghai-Tibet Plateau. The results show that the bacterial communities construct distinct co-occurrence networks in sediment and water. The metacommunity network was parsed into four major modules formed by the operational taxonomic units (OTUs) enriched in sediment or water independently, and water-enriched OTUs exhibited much closer interconnections than sediment-enriched OTUs. When considering the sediment and water bacterial networks separately, different topological properties and modular patterns present: the sediment bacterial network was more clustered while the modules less responded to the environmental variables. On the contrary, the water bacterial network was more complex with the OTUs more interconnected and its modules more responded to the environmental variables. Moreover, the results of the structural equation model suggest that, by the influence of environmental variations on individual modules, the water bacterial communities would be more vulnerable under the fact of accelerating climate change. This study provides insights beyond a conventional taxonomic perspective, adding our knowledge of the potential mechanisms structuring bacterial community assembly and improving our prediction of the responses of this fast-changing ecosystem to future climate change.

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Abundant and rare bacterial taxa structuring differently in sediment and water in thermokarst lakes in the Yellow River Source area, Qinghai-Tibet Plateau

Cited by 4 publications

References 77 publications

Differences in bacterial diversity, composition, and community networks in lake water across three distinct regions on the Qinghai-Tibet Plateau

Differences in bacterial diversity, composition, and community networks in lake water across three distinct regions on the Qinghai-Tibet Plateau

Differences of bacterial community co-occurrence network and assembly processes between sediment and water in lakes on the Qinghai-Tibet Plateau

Bacterial Communities Present Distinct Co-occurrence Networks in Sediment and Water of the Thermokarst Lakes in the Yellow River Source Area

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