Characteristics of planktonic and sediment bacterial communities in a heavily polluted urban river
Urban rivers represent a unique ecosystem in which pollution occurs regularly, altering the biogeochemical characteristics of waterbodies and sediments. However, little is presently known about the spatiotemporal patterns of planktonic and sediment bacterial community diversities and compositions in...
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PeerJ Inc.
2021-02-01
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| Online Access: | https://peerj.com/articles/10866.pdf |
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| author | Heqing Huang Jianhui Liu Fanghui Zhang Kangwen Zhu Chunhua Yang Qiujie Xiang Bo Lei |
| author_facet | Heqing Huang Jianhui Liu Fanghui Zhang Kangwen Zhu Chunhua Yang Qiujie Xiang Bo Lei |
| author_sort | Heqing Huang |
| collection | DOAJ |
| description | Urban rivers represent a unique ecosystem in which pollution occurs regularly, altering the biogeochemical characteristics of waterbodies and sediments. However, little is presently known about the spatiotemporal patterns of planktonic and sediment bacterial community diversities and compositions in urban rivers. Herein, Illumina MiSeq high-throughput sequencing was performed to reveal the spatiotemporal dynamics of bacterial populations in Liangtan River, a heavily polluted urban river in Chongqing City (China). The results showed the richness and diversity of sediment bacteria were significantly higher than those of planktonic bacteria, whereas a strong overlap (46.7%) in OTUs was identified between water and sediment samples. Bacterial community composition remarkably differed in waters and sediments. Planktonic bacterial communities were dominated by Proteobacteria, Bacteroidetes, Cyanobacteria and Actinobacteria, while sediment bacterial communities mainly included Proteobacteria, Actinobacteria, Chloroflexi and Bacteroidetes. Additionally, several taxonomic groups of potential bacterial pathogens showed an increasing trend in water and sediment samples from residential and industrial areas (RI). Variation partition analysis (VPA) indicated that temperature and nutrient were identified as the main drivers determining the planktonic and sediment bacterial assemblages. These results highlight that bacterial communities in the polluted urban river exhibit spatiotemporal variation due to the combined influence of environmental factors associated with sewage discharge and hydropower dams. |
| first_indexed | 2024-03-09T06:39:56Z |
| format | Article |
| id | doaj.art-25b2fe9a09414b42811400d70926d97e |
| institution | Directory Open Access Journal |
| issn | 2167-8359 |
| language | English |
| last_indexed | 2024-03-09T06:39:56Z |
| publishDate | 2021-02-01 |
| publisher | PeerJ Inc. |
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| spelling | doaj.art-25b2fe9a09414b42811400d70926d97e2023-12-03T10:51:08ZengPeerJ Inc.PeerJ2167-83592021-02-019e1086610.7717/peerj.10866Characteristics of planktonic and sediment bacterial communities in a heavily polluted urban riverHeqing Huang0Jianhui Liu1Fanghui Zhang2Kangwen Zhu3Chunhua Yang4Qiujie Xiang5Bo Lei6Chongqing Academy of Ecology and Environmental Sciences, Chongqing, ChinaChongqing Academy of Ecology and Environmental Sciences, Chongqing, ChinaChongqing Academy of Ecology and Environmental Sciences, Chongqing, ChinaCollege of Resources and Environment, Southwest University, Chongqing, ChinaChongqing Academy of Ecology and Environmental Sciences, Chongqing, ChinaChongqing Academy of Ecology and Environmental Sciences, Chongqing, ChinaChongqing Academy of Ecology and Environmental Sciences, Chongqing, ChinaUrban rivers represent a unique ecosystem in which pollution occurs regularly, altering the biogeochemical characteristics of waterbodies and sediments. However, little is presently known about the spatiotemporal patterns of planktonic and sediment bacterial community diversities and compositions in urban rivers. Herein, Illumina MiSeq high-throughput sequencing was performed to reveal the spatiotemporal dynamics of bacterial populations in Liangtan River, a heavily polluted urban river in Chongqing City (China). The results showed the richness and diversity of sediment bacteria were significantly higher than those of planktonic bacteria, whereas a strong overlap (46.7%) in OTUs was identified between water and sediment samples. Bacterial community composition remarkably differed in waters and sediments. Planktonic bacterial communities were dominated by Proteobacteria, Bacteroidetes, Cyanobacteria and Actinobacteria, while sediment bacterial communities mainly included Proteobacteria, Actinobacteria, Chloroflexi and Bacteroidetes. Additionally, several taxonomic groups of potential bacterial pathogens showed an increasing trend in water and sediment samples from residential and industrial areas (RI). Variation partition analysis (VPA) indicated that temperature and nutrient were identified as the main drivers determining the planktonic and sediment bacterial assemblages. These results highlight that bacterial communities in the polluted urban river exhibit spatiotemporal variation due to the combined influence of environmental factors associated with sewage discharge and hydropower dams.https://peerj.com/articles/10866.pdfUrban riverBacterial community structureDiversityIllumina MiSeq high-throughput sequencingSewage discharge |
| spellingShingle | Heqing Huang Jianhui Liu Fanghui Zhang Kangwen Zhu Chunhua Yang Qiujie Xiang Bo Lei Characteristics of planktonic and sediment bacterial communities in a heavily polluted urban river PeerJ Urban river Bacterial community structure Diversity Illumina MiSeq high-throughput sequencing Sewage discharge |
| title | Characteristics of planktonic and sediment bacterial communities in a heavily polluted urban river |
| title_full | Characteristics of planktonic and sediment bacterial communities in a heavily polluted urban river |
| title_fullStr | Characteristics of planktonic and sediment bacterial communities in a heavily polluted urban river |
| title_full_unstemmed | Characteristics of planktonic and sediment bacterial communities in a heavily polluted urban river |
| title_short | Characteristics of planktonic and sediment bacterial communities in a heavily polluted urban river |
| title_sort | characteristics of planktonic and sediment bacterial communities in a heavily polluted urban river |
| topic | Urban river Bacterial community structure Diversity Illumina MiSeq high-throughput sequencing Sewage discharge |
| url | https://peerj.com/articles/10866.pdf |
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