Assessment of chemical integrity based on ecological thresholds in one of the largest basins in China
Chemical integrity plays a crucial role in maintaining the ecological integrity of aquatic ecosystems. Despite its significance, assessments of ecological integrity often prioritize biological evaluations, leading to infrequent and inadequate scrutiny of chemical integrity. Additionally, a comprehen...
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| Format: | Article |
| Language: | English |
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Elsevier
2024-01-01
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| Series: | Ecological Indicators |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1470160X23015492 |
| _version_ | 1797385240371527680 |
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| author | Yun Wan Guiyang Wang Zhenmei Lin Yongjiu Cai Xinli Cai Zhengjie Zhu Shuguang Zhu Shuqing An |
| author_facet | Yun Wan Guiyang Wang Zhenmei Lin Yongjiu Cai Xinli Cai Zhengjie Zhu Shuguang Zhu Shuqing An |
| author_sort | Yun Wan |
| collection | DOAJ |
| description | Chemical integrity plays a crucial role in maintaining the ecological integrity of aquatic ecosystems. Despite its significance, assessments of ecological integrity often prioritize biological evaluations, leading to infrequent and inadequate scrutiny of chemical integrity. Additionally, a comprehensive framework for separately assessing chemical integrity has not been established. To address this issue, we established a new index for evaluating chemical integrity, achieved through indicator screening, normalization, and weight assignment. Combined with the threshold indicator taxa analysis (TITAN) and Pearson correlation analysis, main evaluation indicators and their indicator species were identified and the corresponding response threshold was determined. These thresholds were then applied to improve the normalization method, with weights determined by indicator species proportions. This index was applied to evaluate the chemical integrity of the Huai River Basin, which is one of the largest basins in China. The results indicated that ammonia nitrogen (NH3-N), nitrate nitrogen (NO2-N), pH, and turbidity (Turb) were identified as the core parameters for evaluating chemical integrity. The conventional normalization method (max–min normalization) led to overestimation of the assessment results, whereas improved normalization method based on ecological threshold yielded better and more reasonable results. This study provided a reference for the selection of appropriate indicators and improvement of normalization method to better assess chemical integrity. And it would become a useful tool for monitoring and rehabilitating the chemical integrity in such basins. |
| first_indexed | 2024-03-08T21:51:24Z |
| format | Article |
| id | doaj.art-c64f165bf11e439fb5e14fa5da27cc2a |
| institution | Directory Open Access Journal |
| issn | 1470-160X |
| language | English |
| last_indexed | 2024-03-08T21:51:24Z |
| publishDate | 2024-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Ecological Indicators |
| spelling | doaj.art-c64f165bf11e439fb5e14fa5da27cc2a2023-12-20T07:33:50ZengElsevierEcological Indicators1470-160X2024-01-01158111407Assessment of chemical integrity based on ecological thresholds in one of the largest basins in ChinaYun Wan0Guiyang Wang1Zhenmei Lin2Yongjiu Cai3Xinli Cai4Zhengjie Zhu5Shuguang Zhu6Shuqing An7School of Environment and Energy Engineering, Anhui Jianzhu University, Hefei, 230601, China; Anhui Key Laboratory of Water Pollution Control and Wastewater Recycling, Hefei, 230601, ChinaSchool of Environment and Energy Engineering, Anhui Jianzhu University, Hefei, 230601, China; Anhui Key Laboratory of Water Pollution Control and Wastewater Recycling, Hefei, 230601, ChinaState Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing, 210008, ChinaKey Laboratory of Watershed Geographic Sciences, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, ChinaSchool of Environment and Energy Engineering, Anhui Jianzhu University, Hefei, 230601, China; Anhui Key Laboratory of Water Pollution Control and Wastewater Recycling, Hefei, 230601, ChinaNanjing University Ecology Research Institute of Changshu, Changshu, 215500, ChinaSchool of Environment and Energy Engineering, Anhui Jianzhu University, Hefei, 230601, China; Anhui Key Laboratory of Water Pollution Control and Wastewater Recycling, Hefei, 230601, China; Anhui Institute of Carbon Peaking and Carbon Neutralization Strategy in Construction Field, Hefei, 230601, ChinaSchool of Life Science and Institute of Wetland Ecology, Nanjing University, Nanjing, 210023, China; Corresponding author.Chemical integrity plays a crucial role in maintaining the ecological integrity of aquatic ecosystems. Despite its significance, assessments of ecological integrity often prioritize biological evaluations, leading to infrequent and inadequate scrutiny of chemical integrity. Additionally, a comprehensive framework for separately assessing chemical integrity has not been established. To address this issue, we established a new index for evaluating chemical integrity, achieved through indicator screening, normalization, and weight assignment. Combined with the threshold indicator taxa analysis (TITAN) and Pearson correlation analysis, main evaluation indicators and their indicator species were identified and the corresponding response threshold was determined. These thresholds were then applied to improve the normalization method, with weights determined by indicator species proportions. This index was applied to evaluate the chemical integrity of the Huai River Basin, which is one of the largest basins in China. The results indicated that ammonia nitrogen (NH3-N), nitrate nitrogen (NO2-N), pH, and turbidity (Turb) were identified as the core parameters for evaluating chemical integrity. The conventional normalization method (max–min normalization) led to overestimation of the assessment results, whereas improved normalization method based on ecological threshold yielded better and more reasonable results. This study provided a reference for the selection of appropriate indicators and improvement of normalization method to better assess chemical integrity. And it would become a useful tool for monitoring and rehabilitating the chemical integrity in such basins.http://www.sciencedirect.com/science/article/pii/S1470160X23015492Ecological integrityEcological thresholdMacroinvertebrateNormalization methodHuai River Basin |
| spellingShingle | Yun Wan Guiyang Wang Zhenmei Lin Yongjiu Cai Xinli Cai Zhengjie Zhu Shuguang Zhu Shuqing An Assessment of chemical integrity based on ecological thresholds in one of the largest basins in China Ecological Indicators Ecological integrity Ecological threshold Macroinvertebrate Normalization method Huai River Basin |
| title | Assessment of chemical integrity based on ecological thresholds in one of the largest basins in China |
| title_full | Assessment of chemical integrity based on ecological thresholds in one of the largest basins in China |
| title_fullStr | Assessment of chemical integrity based on ecological thresholds in one of the largest basins in China |
| title_full_unstemmed | Assessment of chemical integrity based on ecological thresholds in one of the largest basins in China |
| title_short | Assessment of chemical integrity based on ecological thresholds in one of the largest basins in China |
| title_sort | assessment of chemical integrity based on ecological thresholds in one of the largest basins in china |
| topic | Ecological integrity Ecological threshold Macroinvertebrate Normalization method Huai River Basin |
| url | http://www.sciencedirect.com/science/article/pii/S1470160X23015492 |
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