Similar but different assembly processes of bacterial and micro-eukaryotic communities in an urban river
Abstract Bacteria and micro-eukaryotes play important roles in river ecological systems. The processes that govern bacterial and micro-eukaryotic communities in urban rivers are still uncertain. The spatiotemporal characteristics and assembly processes of bacterial and micro-eukaryotic communities i...
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Nature Portfolio
2025-02-01
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| Series: | Scientific Reports |
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| Online Access: | https://doi.org/10.1038/s41598-025-91664-y |
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| author | Shenwen Cai Jun Zhao Enguo Sheng Leilei Fan Ziwei Shen Yunfeng Li |
| author_facet | Shenwen Cai Jun Zhao Enguo Sheng Leilei Fan Ziwei Shen Yunfeng Li |
| author_sort | Shenwen Cai |
| collection | DOAJ |
| description | Abstract Bacteria and micro-eukaryotes play important roles in river ecological systems. The processes that govern bacterial and micro-eukaryotic communities in urban rivers are still uncertain. The spatiotemporal characteristics and assembly processes of bacterial and micro-eukaryotic communities in the Xiangjianghe River were explored using 16 S and 18 S rRNA gene amplicon sequencing in the present study. The results indicate that the bacterial and micro-eukaryotic community composition exhibited distinct temporal and spatial variation. The topological characteristics of co-occurrence networks demonstrate that the bacterial and micro-eukaryotic community coexistence patterns vary significantly between the four seasons. Water temperature (WT) and oxidation-reduction potential (ORP) were detected as the most critical factors affecting bacterial and micro-eukaryotic community structure. The stochastic process (dispersal limitation) was the dominant assembly process for bacteria and micro-eukaryotes in all seasons. Deterministic and stochastic processes influenced the bacteria and micro-eukaryotes differently. Compared to bacteria, the values of niche breadth were relatively lower, and the proportion of deterministic processes was relatively higher in micro-eukaryotes. These results expand our understanding of spatiotemporal patterns, assembly mechanisms, and influencing factors of bacterial and micro-eukaryotic communities in urban rivers. |
| format | Article |
| id | doaj-art-815a3211eef048abb283bb594c2b0534 |
| institution | OA Journals |
| issn | 2045-2322 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | Nature Portfolio |
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| series | Scientific Reports |
| spelling | doaj-art-815a3211eef048abb283bb594c2b05342025-08-20T02:01:30ZengNature PortfolioScientific Reports2045-23222025-02-0115111310.1038/s41598-025-91664-ySimilar but different assembly processes of bacterial and micro-eukaryotic communities in an urban riverShenwen Cai0Jun Zhao1Enguo Sheng2Leilei Fan3Ziwei Shen4Yunfeng Li5College of Resources and Environment, Zunyi Normal UniversityCollege of Resources and Environment, Zunyi Normal UniversityCollege of Resources and Environment, Zunyi Normal UniversityCollege of Resources and Environment, Zunyi Normal UniversityYangtze River Fisheries Research Institute, Chinese Academy of Fishery SciencesYangtze River Fisheries Research Institute, Chinese Academy of Fishery SciencesAbstract Bacteria and micro-eukaryotes play important roles in river ecological systems. The processes that govern bacterial and micro-eukaryotic communities in urban rivers are still uncertain. The spatiotemporal characteristics and assembly processes of bacterial and micro-eukaryotic communities in the Xiangjianghe River were explored using 16 S and 18 S rRNA gene amplicon sequencing in the present study. The results indicate that the bacterial and micro-eukaryotic community composition exhibited distinct temporal and spatial variation. The topological characteristics of co-occurrence networks demonstrate that the bacterial and micro-eukaryotic community coexistence patterns vary significantly between the four seasons. Water temperature (WT) and oxidation-reduction potential (ORP) were detected as the most critical factors affecting bacterial and micro-eukaryotic community structure. The stochastic process (dispersal limitation) was the dominant assembly process for bacteria and micro-eukaryotes in all seasons. Deterministic and stochastic processes influenced the bacteria and micro-eukaryotes differently. Compared to bacteria, the values of niche breadth were relatively lower, and the proportion of deterministic processes was relatively higher in micro-eukaryotes. These results expand our understanding of spatiotemporal patterns, assembly mechanisms, and influencing factors of bacterial and micro-eukaryotic communities in urban rivers.https://doi.org/10.1038/s41598-025-91664-yBacteriaMicro-eukaryotesSeasonal variationCommunity assemblyStochastic process |
| spellingShingle | Shenwen Cai Jun Zhao Enguo Sheng Leilei Fan Ziwei Shen Yunfeng Li Similar but different assembly processes of bacterial and micro-eukaryotic communities in an urban river Scientific Reports Bacteria Micro-eukaryotes Seasonal variation Community assembly Stochastic process |
| title | Similar but different assembly processes of bacterial and micro-eukaryotic communities in an urban river |
| title_full | Similar but different assembly processes of bacterial and micro-eukaryotic communities in an urban river |
| title_fullStr | Similar but different assembly processes of bacterial and micro-eukaryotic communities in an urban river |
| title_full_unstemmed | Similar but different assembly processes of bacterial and micro-eukaryotic communities in an urban river |
| title_short | Similar but different assembly processes of bacterial and micro-eukaryotic communities in an urban river |
| title_sort | similar but different assembly processes of bacterial and micro eukaryotic communities in an urban river |
| topic | Bacteria Micro-eukaryotes Seasonal variation Community assembly Stochastic process |
| url | https://doi.org/10.1038/s41598-025-91664-y |
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