The greenhouse effect of antibiotics: The influence pathways of antibiotics on methane release from freshwater sediment
The impact of antibiotics on methane (CH4) release from sediment involves both CH4 production and consumption processes. However, most relevant studies lack a discussion of the pathways by which antibiotics affect CH4 release and do not highlight the role played by the sediment chemical environment...
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| Format: | Article |
| Language: | English |
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Elsevier
2023-06-01
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| Series: | Environment International |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S0160412023002374 |
| _version_ | 1797812094213554176 |
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| author | Ziqi Zhang Zhinan Xu Xiangrong Wang |
| author_facet | Ziqi Zhang Zhinan Xu Xiangrong Wang |
| author_sort | Ziqi Zhang |
| collection | DOAJ |
| description | The impact of antibiotics on methane (CH4) release from sediment involves both CH4 production and consumption processes. However, most relevant studies lack a discussion of the pathways by which antibiotics affect CH4 release and do not highlight the role played by the sediment chemical environment in this influence mechanism. Here, we collected field surface sediments and grouped them with various antibiotic combination concentration gradients (50, 100, 500, 1000 ng g−1) under a 35-day indoor anaerobic constant temperature incubation. We found that the positive effect of antibiotics on sediment CH4 release potential appeared later than the positive effect on sediment CH4 release flux. Still, the positive effect of high-concentration antibiotics (500, 1000 ng g−1) occurred with a lag in both processes. Also, the positive effect of high-concentration antibiotics was significantly higher than low-concentration antibiotics (50, 100 ng g−1) in the later incubation period (p < 0.05). We performed a multi-collinearity assessment of sediment biochemical indicators, followed by a generalized linear model with negative binomial regression (GLM-NB) to obtain essential variables. In particular, we conducted the interaction analysis on CH4 release potential and flux regression for the influence pathways construction. The partial least-squares path modeling (PLS-PM) demonstrated that the positive effect of antibiotics on CH4 release (Total effect = 0.2579) was primarily attributed to their effect on the sediment chemical environment (Direct effect = 0.5107). These findings greatly expand our understanding of the antibiotic greenhouse effect in freshwater sediment. Further studies should more carefully consider the effects of antibiotics on the sediment chemical environment, and continuously improve the mechanistic studies of antibiotics on sediment CH4 release. |
| first_indexed | 2024-03-13T07:33:23Z |
| format | Article |
| id | doaj.art-6967234f455d4872851a83c28b43bb74 |
| institution | Directory Open Access Journal |
| issn | 0160-4120 |
| language | English |
| last_indexed | 2024-03-13T07:33:23Z |
| publishDate | 2023-06-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Environment International |
| spelling | doaj.art-6967234f455d4872851a83c28b43bb742023-06-04T04:23:04ZengElsevierEnvironment International0160-41202023-06-01176107964The greenhouse effect of antibiotics: The influence pathways of antibiotics on methane release from freshwater sedimentZiqi Zhang0Zhinan Xu1Xiangrong Wang2Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, ChinaDepartment of Environmental Science and Engineering, Fudan University, Shanghai 200433, ChinaDepartment of Environmental Science and Engineering, Fudan University, Shanghai 200433, China; Research Center for Urban Ecological Planning and Design, Fudan University, Shanghai 200433, China; Corresponding author at: Department of Environmental Science and Engineering, Fudan University, Shanghai, China.The impact of antibiotics on methane (CH4) release from sediment involves both CH4 production and consumption processes. However, most relevant studies lack a discussion of the pathways by which antibiotics affect CH4 release and do not highlight the role played by the sediment chemical environment in this influence mechanism. Here, we collected field surface sediments and grouped them with various antibiotic combination concentration gradients (50, 100, 500, 1000 ng g−1) under a 35-day indoor anaerobic constant temperature incubation. We found that the positive effect of antibiotics on sediment CH4 release potential appeared later than the positive effect on sediment CH4 release flux. Still, the positive effect of high-concentration antibiotics (500, 1000 ng g−1) occurred with a lag in both processes. Also, the positive effect of high-concentration antibiotics was significantly higher than low-concentration antibiotics (50, 100 ng g−1) in the later incubation period (p < 0.05). We performed a multi-collinearity assessment of sediment biochemical indicators, followed by a generalized linear model with negative binomial regression (GLM-NB) to obtain essential variables. In particular, we conducted the interaction analysis on CH4 release potential and flux regression for the influence pathways construction. The partial least-squares path modeling (PLS-PM) demonstrated that the positive effect of antibiotics on CH4 release (Total effect = 0.2579) was primarily attributed to their effect on the sediment chemical environment (Direct effect = 0.5107). These findings greatly expand our understanding of the antibiotic greenhouse effect in freshwater sediment. Further studies should more carefully consider the effects of antibiotics on the sediment chemical environment, and continuously improve the mechanistic studies of antibiotics on sediment CH4 release.http://www.sciencedirect.com/science/article/pii/S0160412023002374Antibiotic enrichmentFreshwater sedimentMethane releaseInteraction analysisPartial least-squares path modelingSediment chemical environment |
| spellingShingle | Ziqi Zhang Zhinan Xu Xiangrong Wang The greenhouse effect of antibiotics: The influence pathways of antibiotics on methane release from freshwater sediment Environment International Antibiotic enrichment Freshwater sediment Methane release Interaction analysis Partial least-squares path modeling Sediment chemical environment |
| title | The greenhouse effect of antibiotics: The influence pathways of antibiotics on methane release from freshwater sediment |
| title_full | The greenhouse effect of antibiotics: The influence pathways of antibiotics on methane release from freshwater sediment |
| title_fullStr | The greenhouse effect of antibiotics: The influence pathways of antibiotics on methane release from freshwater sediment |
| title_full_unstemmed | The greenhouse effect of antibiotics: The influence pathways of antibiotics on methane release from freshwater sediment |
| title_short | The greenhouse effect of antibiotics: The influence pathways of antibiotics on methane release from freshwater sediment |
| title_sort | greenhouse effect of antibiotics the influence pathways of antibiotics on methane release from freshwater sediment |
| topic | Antibiotic enrichment Freshwater sediment Methane release Interaction analysis Partial least-squares path modeling Sediment chemical environment |
| url | http://www.sciencedirect.com/science/article/pii/S0160412023002374 |
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