Research status on remediation of eutrophic water by submerged macrophytes: A review

Wang, Dongsheng; Gan, Xinyu; Wang, Zhiquan; Jiang, Shun-Feng; Zheng, Xiangyong; Min, Zhao; Zhang, Yonghua; Fan, Chunzhen; Wu, Suqing; Du, Linna

doi:10.1016/j.psep.2022.11.063

Cited by 63 publications

(22 citation statements)

References 136 publications

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“…Due to anthropogenic influences and climate change, eutrophication of lakes and rivers is becoming an increasingly severe global environmental challenge (Geng et al, 2022;Xu et al, 2023). Data from the United States Environmental Protection Agency indicates that 46% of lakes in the United States exceed acceptable levels of nitrogen (N) and 45% exceed acceptable levels of phosphorus (P) (D. Wang et al, 2023). Furthermore, approximately 53% of lakes in Europe, 48% in North America, 41% in South America, and 28% in Africa are impacted by water eutrophication, while 54% of Asian lakes face eutrophication issues (Nyenje et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Seasonal impact of constructed wetlands on nitrogen and phosphorus in sediments of flood control lakes with pollution assessment

Li,

Liu,

Huang

et al. 2024

J of Env Quality

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The primary drivers of eutrophication in lakes following the reduction of external nutrient inputs are the release of N and P from sediments. Constructed wetlands play a pivotal role in ameliorating N, P, and other biogenic element levels. However, the presence of large vegetation in these wetlands also substantially contributes to nutrient accumulation in sediments, a phenomenon influenced by seasonal variations. In this study, a typical constructed wetland was selected as the research site. The research aimed to analyze the forms of N and P in sediments during both summer and winter. Simultaneously, a comprehensive pollution assessment and analysis were conducted within the study area. The findings indicate that elevated summer temperatures, together with the presence of wetland vegetation, promote the release of N through the nitrification process. Additionally, seasonal variations exert a significant impact on the distribution of P storage. Furthermore, the role of constructed wetlands in the absorption and release of N and P is primarily controlled by the influence of organic matter on nitrate‐nitrogen, nitrite‐nitrogen, and available phosphorus, and is also subject to seasonal fluctuations. In summary, under the comprehensive influence of constructed wetlands, vegetation types, and seasons, sediments within the lake generally exhibit a state of mild or moderate pollution. Therefore, targeted measures should be adopted to optimally adjust vegetation types, and human intervention is necessary, involving timely sediment harvesting during the summer to reduce N and P loads, and enhancing sediment adsorption and retention capacity for N and P during the winter.

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Section: Introductionmentioning

confidence: 99%

Seasonal impact of constructed wetlands on nitrogen and phosphorus in sediments of flood control lakes with pollution assessment

Li,

Liu,

Huang

et al. 2024

J of Env Quality

View full text Add to dashboard Cite

show abstract

“…Physical methods (e.g., sediment dredging, artificial aeration, and water diversion dilution) are generally applied for severe water pollution because of their easy operation and long-term effectiveness. However, these physical methods are cost-intensive and may cause damage to water ecosystems [7]. Chemical methods (e.g., flocculation, sedimentation, and chemical removal) are applied for emergency disposal in water pollution incidents because of their quick and good effect, low cost, and easy operation.…”

Section: Introductionmentioning

confidence: 99%

“…Chemical methods (e.g., flocculation, sedimentation, and chemical removal) are applied for emergency disposal in water pollution incidents because of their quick and good effect, low cost, and easy operation. However, chemical methods easily cause secondary pollution and biotoxicity [7]. Compared with physical and chemical methods, biological methods (e.g., phytoremediation, animal and microbial repair) are considered more economical, effective, and environmentally friendly for lake restoration [7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

“…However, chemical methods easily cause secondary pollution and biotoxicity [7]. Compared with physical and chemical methods, biological methods (e.g., phytoremediation, animal and microbial repair) are considered more economical, effective, and environmentally friendly for lake restoration [7][8][9][10]. Lake restoration with submerged macrophytes has unique and comprehensive advantages among biological methods.…”

Section: Introductionmentioning

confidence: 99%

“…There are existing research papers summarizing progress in the field related to submerged macrophytes. These reviews have focused on the relationships between submerged macrophytes and the water environment, macrophytes, phytoplankton, and restoration applications with submerged macrophytes [7,15,18,[20][21][22][23]. For example, Wang et al (2023) [7] reviewed the influence of water nutrients, light, depth, sediments, temperature, transparency, and flow on the growth of submerged macrophytes.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A Bibliometric Analysis of Lake Restoration with Submerged Macrophytes

Gao

2023

Water

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Submerged macrophytes have attracted increasing attention in lake restoration due to the importance of their structuring communities and stabilizing functions in lake ecosystems. However, there is still a lack of systematic reviews on lake restoration with submerged macrophytes. Thus, we performed a systematic review based on a bibliometric analysis via analyzing and visualizing 934 published works from 1996 to 2023 from the Web of Science core collection. Publication characteristics were summarized, and keyword co-occurrence networks, reference co-citation analysis, and keyword burst tests were conducted. Our results suggest that the increasing attention in this field has partly resulted from the many water treatments and scientific schemes in Europe, China, and the USA and extensive international cooperation. The development of this field was divided into three stages based on keyword bursts (e.g., early, turning, and recent stages). Alternative stable states and biomanipulation laid the foundations of this field in the early stage. Progress in the field was discussed based on four aspects, the influence of environmental factors on submerged macrophytes, theory and mechanisms, targets, and evaluation and methods. Therefore, our results provide a new and comprehensive understanding of lake restoration with submerged macrophytes.

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Morphological and transcriptomic responses/acclimations of erect‐type submerged macrophyteHydrilla verticillataboth at low‐light exposure and light recovery phases

Guo,

Gao,

Song

et al. 2023

Ecology and Evolution

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Light intensity is a determinant for submerged macrophytes. Little is known about their molecular responses to low‐light exposure, despite more informative and responsive than morphological traits. For erect‐type submerged macrophytes, the stem is more crucial relative to the leaf in acclimation to low‐light stress, but receives less attention. We determined morphological and stem transcriptomic responses/acclimations of Hydrilla verticillata to extremely and mildly low light (7.2 and 36 μmol photons m−2 s−1, respectively), that is, EL and ML, with the radiation intensity of 180 μmol photons m−2 s−1 as the control. Low‐light exposure continued for 9 days, followed by a 7‐day recovery phase (180 μmol photons m−2 s−1). At the exposure phase, the low‐light treatments, in particular the EL, decreased the relative growth ratio, but induced greater height and longer stem internode distance and epidermal cell. Such responses/acclimations continued into the recovery phase, despite more or less changes in the magnitude. Transcriptome showed that the photosynthetic system was inhibited at the exposure phase, but the macrophyte adjusted hormone synthesis relating to cell division and elongation. Moreover, the EL activated cell stress responses such as DNA repair. Following light recovery, the macrophyte exhibited a strong‐light response, although energy metabolism enhanced. Especially, the EL enriched the pathways relating to anthocyanin synthesis at such phase, indicating an activation of photoprotective mechanism. Our findings suggest that negative influences of low light occur at both low‐light exposure and recovery phases, but submerged macrophytes would acclimate to light environments. Transcriptome can show molecular basis of plant responses/acclimations, including but not limited to morphology. This study establishes a bridge connecting morphological and molecular responses/acclimations.

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Research status on remediation of eutrophic water by submerged macrophytes: A review

Cited by 63 publications

References 136 publications

Seasonal impact of constructed wetlands on nitrogen and phosphorus in sediments of flood control lakes with pollution assessment

Seasonal impact of constructed wetlands on nitrogen and phosphorus in sediments of flood control lakes with pollution assessment

A Bibliometric Analysis of Lake Restoration with Submerged Macrophytes

Morphological and transcriptomic responses/acclimations of erect‐type submerged macrophyteHydrilla verticillataboth at low‐light exposure and light recovery phases

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