Local-Scale Damming Impact on the Planktonic Bacterial and Eukaryotic Assemblages in the upper Yangtze River
文献类型：期刊论文
| 作者 | Li, Hang1,3; Li, Zhe1,3 ; Tang, Qiong1,3,4; Li, Ran2; Lu, Lunhui1,3
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| 刊名 | MICROBIAL ECOLOGY
 |
| 出版日期 | 2022-04-18 |
| 页码 | 15 |
| 关键词 | Bacteria Eukaryotes Keystone taxa Local-scale damming impact The upper Yangtze River |
| ISSN号 | 0095-3628 |
| DOI | 10.1007/s00248-022-02012-w |
| 通讯作者 | Lu, Lunhui(lulunhui@cigit.ac.cn) |
| 英文摘要 | Dam construction and impoundment cause discontinuities in the natural biophysical gradients in rivers. These discontinuities may alter distinctive habitats and different microbial community assembly mechanisms upstream and downstream of dams, which reflect the potential impacts of damming on riverine aquatic ecosystems. In this study, we investigated the planktonic microbial assemblages of three large dams in the upper Yangtze River by using high-throughput sequencing. The results revealed that the alpha diversity indexes increased downstream of the dams. In addition, more eukaryotic ASVs solely occurred downstream of the dams, which indicated that a large proportion of eukaryotes appeared downstream of the dams. The nonmetric multidimensional scaling analysis indicated that there was no obvious geographic clustering of the planktonic microbial assemblages among the different locations or among the different dams. However, the dam barriers changed dam-related variables (maximum dam height and water level) and local environmental variables (water temperature, DOC, etc.) that could possibly affect the assembly of the planktonic microbial communities that are closest to the dams. A co-occurrence network analysis demonstrated that the keystone taxa of the planktonic bacteria and eukaryotes decreased downstream of the dams. In particular, the keystone taxa of the eukaryotes disappeared downstream of the dams. The robustness analysis indicated that the natural connectivity of the microbial networks decreased more rapidly upstream of the dams, and the downstream eukaryotic network was more stable. In conclusion, damming has a greater impact on planktonic eukaryotes than on bacteria in near-dam areas, and planktonic microbial assemblages were more susceptible to the environmental changes. Our study provides a better understanding of the ecological effects of river damming. |
| 资助项目 | National Natural Science Foundation of China[51861125204] ; National Natural Science Foundation of China[52039006] ; Chongqing Bureau of Science and Technology[cstc2020jscx-msxmX0121] ; Chongqing Bureau of Science and Technology[cstc2020jcyj-jqX0010] ; Light of West Program - Chinese Academy of Sciences |
| WOS研究方向 | Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Microbiology |
| 语种 | 英语 |
| WOS记录号 | WOS:000783389300001 |
| 出版者 | SPRINGER |
| 源URL | [http://119.78.100.138/handle/2HOD01W0/15575]  |
| 专题 | 中国科学院重庆绿色智能技术研究院 |
| 通讯作者 | Lu, Lunhui |
| 作者单位 | 1.Univ Chinese Acad Sci, Chongqing Sch, Chongqing 400714, Peoples R China 2.Sichuan Univ, State Key Lab Hydraul & Mt River Engn, Chengdu 610065, Peoples R China 3.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, CAS Key Lab Reservoir Water Environm, Chongqing 400714, Peoples R China 4.Chongqing Jiaotong Univ, Key Lab Hydraul & Waterway Engn, Minist Educ, Chongqing 400074, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Hang,Li, Zhe,Tang, Qiong,et al. Local-Scale Damming Impact on the Planktonic Bacterial and Eukaryotic Assemblages in the upper Yangtze River[J]. MICROBIAL ECOLOGY,2022:15. |
| APA | Li, Hang,Li, Zhe,Tang, Qiong,Li, Ran,&Lu, Lunhui.(2022).Local-Scale Damming Impact on the Planktonic Bacterial and Eukaryotic Assemblages in the upper Yangtze River.MICROBIAL ECOLOGY,15. |
| MLA | Li, Hang,et al."Local-Scale Damming Impact on the Planktonic Bacterial and Eukaryotic Assemblages in the upper Yangtze River".MICROBIAL ECOLOGY (2022):15. |
入库方式： OAI收割
来源：重庆绿色智能技术研究院
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