Characteristic and Evolution of Bacterial Communities in Coal Mining Subsidence Lakes and the Influence of Environmental
Year: 2025
Type: preprint
Abstract: Microorganisms in lake sediments play key roles in ecosystem functions through processes such as organic matter decomposition, nutrient cycling, and productivity regulation. Due to underground coal mining, numerous subsidence lakes have formed. Currently, little is known about the characteristics and evolution of bacterial communities in subsidence lakes. To address this issue, this study investigated the bacterial community characteristics and environmental influences in four coal mining subsidence lakes aged 1 to 40 years, with comparisons to one natural lake and one farmland before subsidence. Results indicated that bacterial community structures in subsidence lakes exhibited regular evolutionary patterns over time. The C/N ratio and total sulfur (TS) were the primary factors influencing lake community structures, and carbon and sulfur cycling in the sediments of subsidence lakes were more active than other biogeochemical cycles. Heavy metals showed a negative correlation with bacterial communities. Bacteria could rapidly establish in subsidence lakes, and the bacterial community structure in newly formed subsidence lakes was closer to that of natural lakes. This study enhances our understanding of bacterial structures in subsidence lakes and provides a foundation for future research on the relationship between ecosystem functions and bacterial communities in subsidence lakes.
Authors: hao fu, Lexiang Zhang, wang wei, han zhang, Rongcheng Sun, min zhao, Sisi Jin, Xiuquan Tan, bo chai
Institution: China University of Geosciences
Language: English
Subfield: Ecology
Field: Environmental Science
Domain: Physical Sciences
Open Access status: gold
OpenAlex ID: W4414368480
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