AI Article Synopsis
- The study explored how varying water velocities affect bacterial communities in eutrophic aquatic environments over a 5-week period.
- Results showed higher bacterial diversity in sediment compared to water, with specific phyla thriving under stronger disturbances while others declined.
- Changes in bacterial community dynamics were linked to shifts in geochemical properties like dissolved oxygen and nutrient levels, offering insights for ecological assessment and remediation efforts.
Article Abstract
The effects of hydrodynamic disturbances on the bacterial communities in eutrophic aquatic environments remain poorly understood, despite their importance to ecological evaluation and remediation. This study investigated the evolution of bacterial communities in the water-sediment systems under the influence of three typical velocity conditions with the timescale of 5 weeks. The results demonstrated that higher bacterial diversity and notable differences were detected in sediment compared to water using the 16S rRNA gene sequencing. The phyla and survived better in both water and sediment under stronger water disturbances. Their relative abundance peaked at 36.0%, 33.2% in water and 38.0%, 43.6% in sediment, respectively, while the phylum in water had the opposite tendency. Its relative abundance grew rapidly in static control (SC) and peaked at 44.8%, and it almost disappeared in disturbance conditions. These phenomena were caused by the proliferation of genus (belonging to ), , , (belonging to ), and (belonging to ). The nonmetric multidimensional scaling (NMDS) and Venn analysis also revealed significantly different evolutionary trend in the three water-sediment systems. It was most likely caused by the changes of geochemical characteristics (dissolved oxygen (DO) and nutrients). This kind of study can provide helpful information for ecological assessment and remediation strategy in eutrophic aquatic environments.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6843157 | PMC |
| http://dx.doi.org/10.3390/ijerph16203868 | DOI Listing |
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