Seasonal Differences and Driving Factors of Microbial Community Structure in Wetlands Along Shores of Daihai Lake

Chenli Hou, Shengqian Yu, Zhenyu Yin, Wenhuan Yang, Long Bai, Zhi Yao, Yang Li and Weiping Li ()
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Chenli Hou: School of Energy and Environment, Inner Mongolia University of Science and Technology, Baotou 014010, China
Shengqian Yu: School of Energy and Environment, Inner Mongolia University of Science and Technology, Baotou 014010, China
Zhenyu Yin: School of Energy and Environment, Inner Mongolia University of Science and Technology, Baotou 014010, China
Wenhuan Yang: School of Energy and Environment, Inner Mongolia University of Science and Technology, Baotou 014010, China
Long Bai: School of Energy and Environment, Inner Mongolia University of Science and Technology, Baotou 014010, China
Zhi Yao: Collaborative Innovation Center of Autonomous Region for Ecological Protection and Comprehensive Utilization in the Inner Mongolia Section of the Yellow River Basin, Baotou 014010, China
Yang Li: School of Energy and Environment, Inner Mongolia University of Science and Technology, Baotou 014010, China
Weiping Li: School of Energy and Environment, Inner Mongolia University of Science and Technology, Baotou 014010, China

Sustainability, 2024, vol. 16, issue 24, 1-13

Abstract: Microorganisms play a crucial role in biogeochemical cycling within wetland ecosystems. Soil-environment-mediated seasonal changes in microbial structure require further investigation. However, the factors driving seasonal variations in the microbial abundance and diversity in the Daihai wetlands remain unclear. This study employed high-throughput sequencing technology to examine the bacterial community structure and diversity in the lakeshore zone of Daihai across different seasons and to explore the seasonal variations in the bacterial community structure and the influence of driving factors. The results indicated that Pseudomonadota and Bacteroidota dominate in spring and Pseudomonadota abundance further increases in summer, while organic-matter-decomposing microorganisms (e.g., Actinobacteriota and Bacteroidota) dominate in autumn. Microbial diversity indices indicated a significantly greater diversity in spring than in summer and autumn ( p < 0.05). Changes in environmental variables were strongly associated with bacterial community changes, with variations in total nitrogen, ammonium nitrogen, and soil moisture content being identified as potential key factors influencing seasonal bacterial diversity trends. Furthermore, bacterial community assembly in spring is driven by both stochastic processes and environmental selection, suggesting that abundant nutrients and organic matter promote bacterial diversity. The findings of this study provide a theoretical basis for wetland ecosystem restoration and conservation.

Keywords: lakeshore wetland; alpha diversity; environmental factors; seasonal variation; microbial community structure (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2024
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