Ecotoxicology and Environmental Safety, Journal Year: 2024, Volume and Issue: 284, P. 116903 - 116903

Published: Aug. 27, 2024

Ice, water, and sediment represent three interconnected habitats in lake ecosystems, bacteria are crucial for maintaining ecosystem equilibrium elemental cycling across these habitats. However, the differential characteristics driving mechanisms of bacterial community structures ice, sediments seasonally frozen lakes remain unclear. In this study, high-throughput sequencing technology was used to analyze compare structure, function, network characteristics, assembly communities Wuliangsuhai, a typical cold region Inner Mongolia. The results showed that ice water phases had similar diversity composition, with Proteobacteria, Bacteroidota, Actinobacteria, Campilobacterota, Cyanobacteria as dominant phyla. displayed significant differences from Chloroflexi, Firmicutes, Desulfobacterota, Acidobacteriota being Notably, exhibited higher spatial variability their distribution than those sediment. This study also revealed during period, species media were dominated by cooperative relationships. Community primarily influenced stochastic processes, dispersal limitation drift identified two most factors within process. heterogeneous selection played role composition. Furthermore, functions related nitrogen, phosphorus, sulfur, carbon, hydrogen vary among These findings elucidate intrinsic structure changes quality different (ice, sediment) cold-zone freezing offering new insights environmental protection ecological restoration efforts such environments.

Language: Английский