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<p>Patterns in microbial communities related to changes in land use type are an important research area in microbial ecology. Soil multifunctionality (SMF) is a comprehensive index that integrates multiple soil ecosystem functions. The relation between soil microbial communities and SMF has recently become a focus of research. However, the patterns of lakeside microbial subcommunities with different rarities are poorly understood. Moreover, the relation between soil microbial attributes and SMF has rarely been studied in lakeside wetlands. This study examined the distributions of abundant and rare bacteria, SMF, and their driving factors in the lakeside wetlands of Dianchi Lake. SMF, alpha diversity in abundant taxa, and community compositions of rare and abundant taxa differed among the lakeside wetlands under various land use types within the Dianchi catchment. Rare taxa exhibited higher alpha diversity than that of abundant taxa, whereas the abundant taxa network showed a more complex and tighter network structure than that of rare taxa. The alpha diversity index in soil-abundant bacterial taxa was significantly lowest in the lakeside wetland of the construction land. The relative abundances of rare and abundant soil bacterial taxa in the lakeside wetlands of the construction site differed from those in other lakeside wetlands. Significant correlations were observed between diversity and network complexity in rare bacterial taxa and SMF. These results indicate that rare bacterial taxa may drive SMF in the lakeside wetlands of Dianchi Lake. The high SMF found in the lakeside wetlands of construction and agricultural lands suggests they have greater nutrients cycling and are associated with greater greenhouse gas emission potential. The relation between SMF and rare bacterial taxa were influenced by soil C:N:P ratios and the overlying water nitrogen status. This study enhances our understanding of the impacts of rare bacterial taxa on SMF in lakeside wetlands under different land use type within catchments.</p>

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Rare Bacterial Taxa Drive Soil Multifunctionality in Lakeside Wetlands of Eutrophic Lake

  • 期刊论文

  • 发表日期：

    2026年1月30日

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  • Lingchen Yuan,
  • Jiajia Zhang,
  • Mengxi Gao,
  • Renlei Yang,
  • Yue Chen,
  • Bin Hu,
  • Defeng Feng,
  • Wei Li

摘要

Patterns in microbial communities related to changes in land use type are an important research area in microbial ecology. Soil multifunctionality (SMF) is a comprehensive index that integrates multiple soil ecosystem functions. The relation between soil microbial communities and SMF has recently become a focus of research. However, the patterns of lakeside microbial subcommunities with different rarities are poorly understood. Moreover, the relation between soil microbial attributes and SMF has rarely been studied in lakeside wetlands. This study examined the distributions of abundant and rare bacteria, SMF, and their driving factors in the lakeside wetlands of Dianchi Lake. SMF, alpha diversity in abundant taxa, and community compositions of rare and abundant taxa differed among the lakeside wetlands under various land use types within the Dianchi catchment. Rare taxa exhibited higher alpha diversity than that of abundant taxa, whereas the abundant taxa network showed a more complex and tighter network structure than that of rare taxa. The alpha diversity index in soil-abundant bacterial taxa was significantly lowest in the lakeside wetland of the construction land. The relative abundances of rare and abundant soil bacterial taxa in the lakeside wetlands of the construction site differed from those in other lakeside wetlands. Significant correlations were observed between diversity and network complexity in rare bacterial taxa and SMF. These results indicate that rare bacterial taxa may drive SMF in the lakeside wetlands of Dianchi Lake. The high SMF found in the lakeside wetlands of construction and agricultural lands suggests they have greater nutrients cycling and are associated with greater greenhouse gas emission potential. The relation between SMF and rare bacterial taxa were influenced by soil C:N:P ratios and the overlying water nitrogen status. This study enhances our understanding of the impacts of rare bacterial taxa on SMF in lakeside wetlands under different land use type within catchments.