Temporal and Spatial Analysis of Trace Metal Ecotoxicity in Sediments of Chaohu Lake, China
The species sensitivity distribution (SSD) analysis for aquatic ecosystems has been increasingly used in risk assessment. However, existing analyses of the impact of trace metals in lake sediments on aquatic organisms often neglect the spatiotemporal variability of trace metal release. This oversigh...
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| Language: | English |
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MDPI AG
2024-12-01
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| Series: | Toxics |
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| Online Access: | https://www.mdpi.com/2305-6304/12/12/923 |
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| author | Wenguang Luo Zongjun Li Ran Yi Lijuan Han Senlin Zhu |
| author_facet | Wenguang Luo Zongjun Li Ran Yi Lijuan Han Senlin Zhu |
| author_sort | Wenguang Luo |
| collection | DOAJ |
| description | The species sensitivity distribution (SSD) analysis for aquatic ecosystems has been increasingly used in risk assessment. However, existing analyses of the impact of trace metals in lake sediments on aquatic organisms often neglect the spatiotemporal variability of trace metal release. This oversight can result in ecological risk assessments that lack specificity. To address this gap, we collected 32 core sediment samples from Lake Chaohu to systematically investigate the ecological toxicological risks posed by the release of eight trace metal indicators into the overlying water column under four hydrological scenarios throughout the year. Results indicated that only Cu, Pb, and Zn exhibit persistent toxicological risks. The comprehensive ecological toxicological risk of sediment trace metals showed spatial differences, increasing from the western region to the eastern region, i.e., western region < central region < eastern region. Seasonally, the risk levels are ordered as follows: May < September < November to April of the following year < June to August. The eastern region in summer (June to August) was identified as the high-risk area and period for trace metal pollution in sediments. Based on these conclusions, it is recommended to implement pollution control and environmental monitoring measures in the eastern region during the summer to effectively control the pollution and ecological risks of trace metals. |
| format | Article |
| id | doaj-art-21dee95fd5cf4710b9d0cdac74b2ead6 |
| institution | DOAJ |
| issn | 2305-6304 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Toxics |
| spelling | doaj-art-21dee95fd5cf4710b9d0cdac74b2ead62025-08-20T02:57:21ZengMDPI AGToxics2305-63042024-12-01121292310.3390/toxics12120923Temporal and Spatial Analysis of Trace Metal Ecotoxicity in Sediments of Chaohu Lake, ChinaWenguang Luo0Zongjun Li1Ran Yi2Lijuan Han3Senlin Zhu4State Key Laboratory of Water Resources Engineering and Management, Wuhan University, Wuhan 430072, ChinaJingjiang Bureau of Hydrology and Water Resources Survey, Changjiang Water Resources Commission, Jingzhou 434000, ChinaInstitute of Hydroecology, Ministry of Water Resources and Chinese Academy of Sciences, Wuhan 430079, ChinaCollege of Hydro Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, ChinaCollege of Hydraulic Science and Engineering, Yangzhou University, Yangzhou 225009, ChinaThe species sensitivity distribution (SSD) analysis for aquatic ecosystems has been increasingly used in risk assessment. However, existing analyses of the impact of trace metals in lake sediments on aquatic organisms often neglect the spatiotemporal variability of trace metal release. This oversight can result in ecological risk assessments that lack specificity. To address this gap, we collected 32 core sediment samples from Lake Chaohu to systematically investigate the ecological toxicological risks posed by the release of eight trace metal indicators into the overlying water column under four hydrological scenarios throughout the year. Results indicated that only Cu, Pb, and Zn exhibit persistent toxicological risks. The comprehensive ecological toxicological risk of sediment trace metals showed spatial differences, increasing from the western region to the eastern region, i.e., western region < central region < eastern region. Seasonally, the risk levels are ordered as follows: May < September < November to April of the following year < June to August. The eastern region in summer (June to August) was identified as the high-risk area and period for trace metal pollution in sediments. Based on these conclusions, it is recommended to implement pollution control and environmental monitoring measures in the eastern region during the summer to effectively control the pollution and ecological risks of trace metals.https://www.mdpi.com/2305-6304/12/12/923trace metalssediment re-suspensionreleasespecies sensitivityecotoxicological risk |
| spellingShingle | Wenguang Luo Zongjun Li Ran Yi Lijuan Han Senlin Zhu Temporal and Spatial Analysis of Trace Metal Ecotoxicity in Sediments of Chaohu Lake, China Toxics trace metals sediment re-suspension release species sensitivity ecotoxicological risk |
| title | Temporal and Spatial Analysis of Trace Metal Ecotoxicity in Sediments of Chaohu Lake, China |
| title_full | Temporal and Spatial Analysis of Trace Metal Ecotoxicity in Sediments of Chaohu Lake, China |
| title_fullStr | Temporal and Spatial Analysis of Trace Metal Ecotoxicity in Sediments of Chaohu Lake, China |
| title_full_unstemmed | Temporal and Spatial Analysis of Trace Metal Ecotoxicity in Sediments of Chaohu Lake, China |
| title_short | Temporal and Spatial Analysis of Trace Metal Ecotoxicity in Sediments of Chaohu Lake, China |
| title_sort | temporal and spatial analysis of trace metal ecotoxicity in sediments of chaohu lake china |
| topic | trace metals sediment re-suspension release species sensitivity ecotoxicological risk |
| url | https://www.mdpi.com/2305-6304/12/12/923 |
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