Review
Green & Sustainable Science & Technology
Yifei Li, Qingbing Lu, Jian Yang, Yi Xing, Wei Ling, Kai Liu, Qizhen Yang, Hongjie Ma, Zengxin Pei, Tianqi Wu, Haochen Guo, Ziyuan Gao, Lianfeng Zhao, Junnan Sun, Fan Yang, Xiumei Tang, Xiaoyan Li, Ding Zhao
Summary: This paper provides a systematic review of the sources, hazards, and impacts of microplastics in the Changjiang Estuary. It analyzes the current research on microplastics in the estuary and presents the abundance, characteristics, and primary sources of microplastics in the area. The paper also offers relevant suggestions based on the specific situation of the Changjiang River Estuary and developed microplastic treatment technologies. It serves as a structured reference for future research and helps in assessing the ecological impact of microplastics.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Environmental Sciences
Emma Sullivan, Matthew Cole, Elizabeth C. Atwood, Penelope K. Lindeque, Pham Thi Chin, Victor Martinez-Vicente
Summary: This study investigated the relationship between suspended particulate matter (SPM) and microplastic concentration using remote sensing, and computed proxy values for microplastic flux. This approach could be applied to study microplastic flux in other major rivers, but local establishment and validation of SPM-to-microplastic relationships are necessary.
MARINE POLLUTION BULLETIN
(2023)
Article
Environmental Sciences
Muhammad Rozaimi Mohd Zaki, Syatirah Husna Mohamad Zaid, Azim Haziq Zainuddin, Ahmad Zaharin Aris
Summary: This study evaluates the abundance and distribution of microplastics in the gastropods of a tropical estuary in Malaysia, finding that microplastics mainly originate from urban areas in the estuary. The majority of microplastics are fibers with black color.
MARINE POLLUTION BULLETIN
(2021)
Article
Environmental Sciences
A. A. Franco, J. M. Arellano, G. Albendin, R. Rodriguez-Barroso, J. M. Quiroga, M. D. Coello
Summary: This research aimed to study the sources, characteristics, and removal rates of microplastics in two wastewater treatment plants in Cádiz, with a focus on the presence of resin polymers from industrial activities. The results showed that fibers were the most common form of microplastics, and there were variations in the types and quantities of microplastics in different size ranges.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Sonya R. Moses, Martin G. J. Loeder, Frank Herrmann, Christian Laforsch
Summary: This study examines the seasonal variability of microplastics (MPs) in the Weser River in Germany over the course of a year. The findings show that the concentration of MPs is strongly correlated with discharge rates and suspended particulate matter for small MPs (10-149 μm), but not for large MPs (500-5000 μm). The study suggests that river beds play a role in MP release during high discharge events, while precipitation-driven soil erosion and urban runoff introduce MPs into the river. This research provides valuable insights for further investigations into MP transport between ecosystems.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Environmental Sciences
Theresa Wing Ling Lam, Lincoln Fok, Anson Tsz Hin Ma, Heng-Xiang Li, Xiang-Rong Xu, Lewis Ting On Cheung, Ming Hung Wong
Summary: This study examined the abundance of microplastics in the stomach and intestine of marine-cultured hybrid groupers in the Pearl River Estuary. Microplastics were found in all fish samples, with a higher concentration in the intestine than in the stomach, and predominantly in the form of fiber-shaped particles.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Computer Science, Interdisciplinary Applications
Yaoshen Fan, Shaohua Zhang, Xiaokang Du, Guangzhou Wang, Shoubing Yu, Shentang Dou, Shenliang Chen, Hongyu Ji, Ping Li, Fucheng Liu
Summary: In this paper, an extended three-dimensional model of the Yellow River Estuary is established and calibrated using field data. The study explores the factors affecting the extension of the low salinity zone and the retardation time of salinity change in the estuary. The optimal time for reducing estuary salinity is suggested.
JOURNAL OF HYDROINFORMATICS
(2023)
Article
Environmental Sciences
Nian Wei, Mengyu Bai, Yihe Wang, Jinzhao Wang, Kai Liu, Lixin Zhu, Feng Zhang, Xiaohui Wang, Tianning Wu, Zhiwei Zhang, Changjun Li, Hui Wu, Zhangyu Song, Peilin Jiang, Daoji Li
Summary: In order to deepen our understanding of riverine microplastic (MP) discharge into the ocean, we sampled at Xuliujing, the saltwater intrusion node of the Yangtze River Estuary, throughout four seasons. We observed that the collision of downstream and upstream currents contributed to high MP concentration and that the mean MP abundance fluctuated with the tide. We developed a model to predict the net flux of MP based on seasonal abundance, vertical distribution of MP, and current velocity, estimating that approximately 2154 ± 359.7 tons/year of MP flowed into the East China Sea via the River in 2017-2018. Our study suggests that riverine MP flux can be overestimated due to reciprocating currents, and we calculated the tide impact factor index (TIFI) for the Yangtze River Estuary to be between 38.11% and 58.05%.
MARINE ENVIRONMENTAL RESEARCH
(2023)
Article
Marine & Freshwater Biology
Mengqi Li, Nan Wang, Guangxue Li, Dehai Song, Yanzhen Gu, Xianwen Bao, Shidong Liu, Lei Zhang
Summary: Plume bulges were found in the Pearl River Estuary (PRE) during a flood-ebb tidal cycle, contrary to previous belief that estuaries with trumpet-like characteristics are less prone to form plume bulges. The formation dynamics and influences of discharge change on the plume bulge were revealed through simultaneous observations. The tidal plume was identified as the main component forming the plume bulge, rather than the surface-advected plume. Higher discharge enhanced the momentum and flux of the tidal plume, while lower discharge favored the formation of a surface-advected plume along the west bank.
ESTUARINE COASTAL AND SHELF SCIENCE
(2023)
Article
Environmental Sciences
Zeyan Zhou, Panyue Zhang, Guangming Zhang, Siqi Wang, Yajing Cai, Hongjie Wang
Summary: The study on the vertical microplastic distribution in estuary sediment of Fuhe River in northern China revealed that microplastic content decreased with depth, with the highest content in the topmost sediment layer. The smaller particle size and higher proportion of colored microplastics were found in deeper sediment layers. The spatial distribution of microplastics in sediments was closely related to human activities, with higher content in areas with more intense human activities.
Article
Ecology
Yangyang Zhao, Khanittha Uthaipan, Zhongming Lu, Yan Li, Jing Liu, Hongbin Liu, Jianping Gan, Feifei Meng, Minhan Dai
Summary: Intermittent hypoxia in the Pearl River estuary is influenced by factors such as typhoons and biochemical processes, leading to destruction and rapid restoration of hypoxic conditions. Freshwater inputs suppress hypoxia formation, and the reinstatement of hypoxia is influenced by offshore subsurface water intrusion. This study highlights the importance of understanding hypoxia intermittency in coastal areas under changing climate conditions.
Article
Engineering, Environmental
Katekanya Tadsuwan, Sandhya Babel
Summary: This study investigated the microplastic pollution in an urban wastewater treatment plant in Thailand, finding that the major types of MPs in the WWTP were polyester fibres, followed by polypropylene, polyethylene, silicone polymer and polystyrene. The study highlights the potential risk of MPs from dried sewage sludge in agricultural soil.
WASTE MANAGEMENT & RESEARCH
(2021)
Article
Engineering, Environmental
N. N. Phuong, E. Dhivert, B. Mourier, C. Grosbois, J. Gasperi
Summary: This study investigates the distribution of microplastic pollution in sediments of the Villerest reservoir. The results show that the section with fine-grained sediments has significantly higher levels of microplastics compared to the section with coarse-grained sediments. The study also finds that the polymer diversity is higher in fine-grained sediments. This research contributes to a better understanding of the role of hydrosedimentary processes in microplastic distribution and provides valuable insights for sediment management operations.
Article
Engineering, Marine
Tracey Schafer, Nicole Dix, Shannon Dunnigan, K. Ramesh Reddy, Todd Z. Osborne
Summary: Hurricanes have the ability to export large amounts of nutrients from terrestrial systems into aquatic networks, affecting ecosystem metabolism. A study in the blackwater river of Florida found that hurricanes, especially after wet summer conditions, significantly increased the export of dissolved organic carbon. However, lower-category hurricanes may not have a significant impact on organic matter export.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2022)
Article
Marine & Freshwater Biology
Shikun Hu, Bingjun Liu, Maochuan Hu, Xuan Yu, Zhihong Deng, Hui Zeng, Mingzhu Zhang, Dan Li
Summary: The study focuses on the adverse effects of climate change-induced storm surges and compound flood events on estuaries. Using the ADCIRC + SWAN coupled model, various scenario simulations based on Super Typhoon Hato were conducted to understand the nonlinear interactions between tide, surge, and river during extreme events. The results show that tide-surge phases, typhoon tracks and wind speeds, and upstream runoff all contribute to extreme water levels through different nonlinear interactions. The study emphasizes the dominant role of tide-surge phases and highlights the exacerbation of nonlinear effects with increasing typhoon wind speeds and upstream discharges.
ESTUARINE COASTAL AND SHELF SCIENCE
(2023)
Article
Environmental Sciences
William Boni, Georgia Arbuckle-Keil, N. L. Fahrenfeld
Summary: This study aimed to determine the concentration and polymer types of microplastics (MP) in two stormwater outfalls and a bioretention basin. The highest MP concentrations were observed in the bioretention basin, and significant differences were found between the sampling sites. There was a weak but significant negative correlation between cumulative rainfall and MP concentrations.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Karli Sipps, Georgia Arbuckle-Keil, Robert Chant, Nicole Fahrenfeld, Lori Garzio, Kasey Walsh, Grace Saba
Summary: This study investigated the presence of microplastics in zooplankton in the Hudson-Raritan estuary and found that polyethylene and polypropylene were the most common types of microplastics. The ingestion of microplastics by zooplankton was found to be a major pathway for microplastic accumulation in surface estuarine waters, based on gut turnover time estimates.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)