Phytoplankton community succession and cyanobacterial dominance shifts during South-to-North water diversion project: Insights from two impounding reservoirs, China
To alleviate local water crises, water diversion projects are carried out in many countries around the world. However, such projects can cause a series of ecological effects with controversial consequences in water-receiving systems. Our study shows the transformations of phytoplankton communities i...
Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2025-08-01
|
| Series: | Ecotoxicology and Environmental Safety |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0147651325008218 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849423201105346560 |
|---|---|
| author | Shan Jiang Shasha Zhang Jielin Wei Hangzhou Xu Haiyan Pei |
| author_facet | Shan Jiang Shasha Zhang Jielin Wei Hangzhou Xu Haiyan Pei |
| author_sort | Shan Jiang |
| collection | DOAJ |
| description | To alleviate local water crises, water diversion projects are carried out in many countries around the world. However, such projects can cause a series of ecological effects with controversial consequences in water-receiving systems. Our study shows the transformations of phytoplankton communities in Datun Reservoir (DT) and Shuangwangcheng Reservoir (SWC), located on the eastern route of the South-to-North Water Diversion Project (SNWDP), China. Phytoplankton communities in these two reservoirs exhibited transient homogenization driven by the complex effects of temperature and water diversion dynamics during the first three years of the study, but ultimately diverged into distinct assemblages after ten years. Further, the newly detected Raphidiopsis raciborskii in later years showed a significant positive correlation with accumulative inflow. Combined with the increase cyanobacterial diversity observed in both reservoirs, these findings indicate that water diversion may be a pathway for cyanobacterial expansion. Moreover, low nitrogen conditions resulting from the water diversion appear to provide a competitive advantageous for nitrogen-fixing cyanobacteria (Raphidiopsis raciborskii and Pseudanabaena limnetica) over non-fixing species (Microcystis aeruginosa). Our study highlights several detrimental ecological issues affecting water-receiving systems, even in the context of improved water quality associated with the SNWDP. It also offers critical insights for managing of water-impounding systems in the future. |
| format | Article |
| id | doaj-art-def6c7dbe3094d79b4d0cdba7f29eefc |
| institution | Kabale University |
| issn | 0147-6513 |
| language | English |
| publishDate | 2025-08-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Ecotoxicology and Environmental Safety |
| spelling | doaj-art-def6c7dbe3094d79b4d0cdba7f29eefc2025-08-20T03:30:44ZengElsevierEcotoxicology and Environmental Safety0147-65132025-08-0130111848110.1016/j.ecoenv.2025.118481Phytoplankton community succession and cyanobacterial dominance shifts during South-to-North water diversion project: Insights from two impounding reservoirs, ChinaShan Jiang0Shasha Zhang1Jielin Wei2Hangzhou Xu3Haiyan Pei4Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, ChinaSchool of Environmental Science and Engineering, Shandong University, Qingdao 266237, ChinaDepartment of Environmental Science and Engineering, Fudan University, Shanghai 200433, ChinaSchool of Environmental Science and Engineering, Shandong University, Qingdao 266237, ChinaDepartment of Environmental Science and Engineering, Fudan University, Shanghai 200433, China; Shandong Provincial Engineering Center on Environmental Science and Technology, Jinan 250061, China; Institute of Eco-Chongming (IEC), Shanghai 202162, China; Corresponding author at: Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, China.To alleviate local water crises, water diversion projects are carried out in many countries around the world. However, such projects can cause a series of ecological effects with controversial consequences in water-receiving systems. Our study shows the transformations of phytoplankton communities in Datun Reservoir (DT) and Shuangwangcheng Reservoir (SWC), located on the eastern route of the South-to-North Water Diversion Project (SNWDP), China. Phytoplankton communities in these two reservoirs exhibited transient homogenization driven by the complex effects of temperature and water diversion dynamics during the first three years of the study, but ultimately diverged into distinct assemblages after ten years. Further, the newly detected Raphidiopsis raciborskii in later years showed a significant positive correlation with accumulative inflow. Combined with the increase cyanobacterial diversity observed in both reservoirs, these findings indicate that water diversion may be a pathway for cyanobacterial expansion. Moreover, low nitrogen conditions resulting from the water diversion appear to provide a competitive advantageous for nitrogen-fixing cyanobacteria (Raphidiopsis raciborskii and Pseudanabaena limnetica) over non-fixing species (Microcystis aeruginosa). Our study highlights several detrimental ecological issues affecting water-receiving systems, even in the context of improved water quality associated with the SNWDP. It also offers critical insights for managing of water-impounding systems in the future.http://www.sciencedirect.com/science/article/pii/S0147651325008218Phytoplankton communityCyanobacteriaReservoirWater diversionHomogenization |
| spellingShingle | Shan Jiang Shasha Zhang Jielin Wei Hangzhou Xu Haiyan Pei Phytoplankton community succession and cyanobacterial dominance shifts during South-to-North water diversion project: Insights from two impounding reservoirs, China Ecotoxicology and Environmental Safety Phytoplankton community Cyanobacteria Reservoir Water diversion Homogenization |
| title | Phytoplankton community succession and cyanobacterial dominance shifts during South-to-North water diversion project: Insights from two impounding reservoirs, China |
| title_full | Phytoplankton community succession and cyanobacterial dominance shifts during South-to-North water diversion project: Insights from two impounding reservoirs, China |
| title_fullStr | Phytoplankton community succession and cyanobacterial dominance shifts during South-to-North water diversion project: Insights from two impounding reservoirs, China |
| title_full_unstemmed | Phytoplankton community succession and cyanobacterial dominance shifts during South-to-North water diversion project: Insights from two impounding reservoirs, China |
| title_short | Phytoplankton community succession and cyanobacterial dominance shifts during South-to-North water diversion project: Insights from two impounding reservoirs, China |
| title_sort | phytoplankton community succession and cyanobacterial dominance shifts during south to north water diversion project insights from two impounding reservoirs china |
| topic | Phytoplankton community Cyanobacteria Reservoir Water diversion Homogenization |
| url | http://www.sciencedirect.com/science/article/pii/S0147651325008218 |
| work_keys_str_mv | AT shanjiang phytoplanktoncommunitysuccessionandcyanobacterialdominanceshiftsduringsouthtonorthwaterdiversionprojectinsightsfromtwoimpoundingreservoirschina AT shashazhang phytoplanktoncommunitysuccessionandcyanobacterialdominanceshiftsduringsouthtonorthwaterdiversionprojectinsightsfromtwoimpoundingreservoirschina AT jielinwei phytoplanktoncommunitysuccessionandcyanobacterialdominanceshiftsduringsouthtonorthwaterdiversionprojectinsightsfromtwoimpoundingreservoirschina AT hangzhouxu phytoplanktoncommunitysuccessionandcyanobacterialdominanceshiftsduringsouthtonorthwaterdiversionprojectinsightsfromtwoimpoundingreservoirschina AT haiyanpei phytoplanktoncommunitysuccessionandcyanobacterialdominanceshiftsduringsouthtonorthwaterdiversionprojectinsightsfromtwoimpoundingreservoirschina |