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61,005 resultsShowing papers similar to Estimated microplastic stress and potential affiliated toxic elements on phytoplankton in a floodplain-lake system
ClearThe current situation of water pollutants and pollution source in Poyang Lake: A review
This review of pollution in China's largest freshwater lake, Poyang Lake, finds that microplastics are accumulating alongside heavy metals and elevated nitrogen and phosphorus from industrial discharge and human activity. Because Poyang Lake feeds the Yangtze River and supports major fisheries, microplastic buildup there has potential downstream consequences for aquatic ecosystems and the people who depend on them.
Distribution and characteristics of microplastics in the sediments of Poyang Lake, China
Researchers found microplastic contamination in sediments across Poyang Lake, China, with abundances ranging from 11 to 3,153 items per kilogram dry weight, and identified significant spatial variability linked to human activity and hydrological conditions.
Microplastic abundance, distribution and composition in water, sediments, and wild fish from Poyang Lake, China
Microplastics were measured in surface water, sediments, and fish (crucian carp) across Poyang Lake, China's largest freshwater lake, finding 5–34 items/L in water, 54–506 items/kg in sediments, and 0–18 items per fish, with heterogeneous spatial distribution related to anthropogenic and topographic factors. The study provides comprehensive multi-compartment baseline data on microplastic contamination in a major Chinese freshwater ecosystem.
Distribution and changes in microplastics in Taihu Lake and cyanobacterial blooms formed by the aggregation of Microcystis colonies
Researchers investigated microplastic distribution in the surface water and sediments of Taihu Lake, China, finding abundances of 0-3.7 items/L in surface water and 44.42-417.56 items/kg in sediments, and exploring relationships between microplastics, nutrient pollutants, and cyanobacterial bloom formation in this heavily eutrophic freshwater system.
Bioaccumulation effects of microplastics and heavy metals pollutants in the dominant freshwater fish species in the Longkou entry of Raohe River, Lake Poyang Basin
Eight freshwater fish species from a Chinese lake all contained microplastics in their digestive tracts and gills, along with elevated heavy metals in their muscle tissue. The co-occurrence of microplastics and heavy metals in commonly consumed fish raises concerns about compounded food safety risks for people in this region.
Occurrence and distribution of microplastics in China’s largest freshwater lake system
Researchers found high levels of microplastics in both water and sediment across China's largest freshwater lake system, Poyang Lake, with concentrations up to 1,064 particles per cubic meter in water. The study reveals widespread contamination even in protected nature reserves, emphasizing the scale of the freshwater microplastics problem.
Interactions between phytoplankton species and micro/nano‐plastics and heavy metal contamination
This review examined the interactions between micro- and nanoplastics and heavy metals in the context of phytoplankton ecotoxicology, analyzing how combined pollutant stress affects marine primary producers. The combined toxicity was often greater than individual effects, with MPs acting as carriers that alter heavy metal bioavailability to phytoplankton.
How hydrodynamic conditions dominate the microplastic footprint in the largest freshwater lake in China
Researchers collected microplastics from surface water across China's Poyang Lake and used hydrodynamic flow data to model how three dominant particle types—PE fibers, PP fragments, and PE films—migrate under different flow conditions. Hydrodynamic conditions were the dominant control on microplastic spatial distribution, with still-water zones accumulating the highest concentrations.
Cyanobacterial relative enrichment over diatoms: Differential responses of plankton to microplastic pollution in the Zhanghe River, Northern China
Researchers assessed microplastic pollution and its ecological impacts on plankton communities in the Zhanghe River, China, finding that fibrous polyethylene, polypropylene, and polyamide MPs increased from upstream to downstream and were significantly associated with cyanobacterial proliferation while inhibiting diatoms, with a synergistic interaction with total phosphorus potentially amplifying eutrophication risk.
Spatial and temporal distribution characteristics of microplastics in surface water of typical shallow lake in the middle and lower reaches of Yangtze River: A case study of Lake Baoan, Hubei Province
A seasonal sampling campaign at Lake Baoan, a shallow Yangtze River basin lake in China, found an average microplastic abundance of about 16 particles per litre in surface water, with fibers making up 40% of particles and polyethylene the dominant polymer. Microplastic concentrations peaked in winter and were lowest in summer, but showed no significant correlation with conventional water-quality indicators — suggesting that standard water-quality monitoring will miss microplastic contamination.
Investigation on microplastic pollution of Dongting Lake and its affiliated rivers
Researchers surveyed microplastic contamination in Dongting Lake and its affiliated rivers in China, collecting 15 surface water and 15 sediment samples from across the lake district and finding microplastic abundances of 0.62-4.31 items/m3 in water and 21-52 items/100 g dry weight in sediments. Fibers dominated and the results indicate the lake system is a significant microplastic sink fed by surrounding river networks.
[Occurrence Relationship Between Microplastics and Heavy Metals Pollutants in the Estuarine Sediments of Poyang Lake and the Yangtze River].
This study analyzed microplastic and heavy metal concentrations in sediments at the junction of Poyang Lake and the Yangtze River in China, finding substantial microplastic abundance (averaging ~982 particles/kg) that correlated with levels of copper, cadmium, lead, zinc, and chromium. The co-occurrence of these pollutants raises concern that microplastics and heavy metals may compound each other's environmental risks in this region.
Spatial–Temporal Wetland Landcover Changes of Poyang Lake Derived from Landsat and HJ-1A/B Data in the Dry Season from 1973–2019
Satellite imagery analysis of Poyang Lake in China from 1973 to 2019 revealed major shifts in wetland cover types driven by flooding, drought cycles, and human activity. The study is focused on remote sensing of wetland dynamics and is not directly related to microplastics research.
Microplastic pollution in Yellow River: Current status and research progress of biotoxicological effects
A comprehensive assessment of microplastic pollution in China's Yellow River found average abundances of 5,358–654,000 items/m³ in water and 43.57–615 items/kg in sediment, with fibers dominant in water samples, and reviewed evidence of biotoxicity in fish, invertebrates, and microorganisms.
Microplastics in Taihu Lake, China
Researchers surveyed Taihu Lake in China — one of the largest freshwater lakes in the country — and found microplastics throughout, with concentrations and polymer composition reflecting surrounding urban and industrial inputs.
From particle tracking modelling to species impact forecasting: a framework for microplastic exposure risk quantification in the largest freshwater lake of China
Using a hydrodynamic model coupled with particle tracking, researchers simulated microplastic transport, distribution, and impact zones in Poyang Lake, China's largest freshwater lake. The model revealed seasonal variation in MP accumulation hotspots driven by water level fluctuations, and predicted high-risk zones for aquatic organisms.
Status and characteristics of microplastic pollution in Chinese freshwater environment
This review summarizes research on microplastic distribution, toxic effects on organisms, and interactions with other pollutants in Chinese freshwater environments. The paper calls for strengthened regulation and monitoring of microplastics in China's lakes, rivers, and water supplies.
Microplastics contamination in different trophic state lakes along the middle and lower reaches of Yangtze River Basin
Researchers surveyed microplastic contamination in surface water and sediments of 18 lakes along the middle and lower Yangtze River Basin in China. They found microplastics present in all sampled lakes and identified a correlation between lake trophic state and microplastic abundance. The study suggests that wastewater discharge, which drives both eutrophication and microplastic pollution, is a common underlying factor linking these two environmental issues.
Effects of microplastics on bacterial communities in lake wetland sediments: a comparison between drought and flooded conditions
Researchers established a sediment microcosm system for Poyang Lake wetland and examined the effects of polyethylene and polypropylene microplastics on bacterial community structure, functional genes, and ecological processes over 180 days under both simulated drought and flooded conditions.
Bacterial community structure of water, sediment and microplastics in Poyang Lake wetland.
This study compared the bacterial communities living on four types of microplastics (film, foam, fiber, and fragment) in Poyang Lake wetland in China against the bacterial communities in the surrounding water and sediment. The microplastic surfaces hosted distinct microbial communities that differed from both the water and sediment, with foam microplastics supporting the least diverse communities. This "plastisphere" research is important because the unique bacteria colonizing plastic surfaces could spread pathogens or alter nutrient cycles in freshwater wetland ecosystems.
Comprehensive analysis of microplastics in water, sediment and fish from a large recreational lake
Researchers surveyed microplastics in water, sediment, and fish from a large recreational lake in China, finding MPs across all sampled compartments with higher concentrations near tourist facilities and boat launch areas, raising concerns about human exposure through lake recreation and consumption of contaminated fish.
Distribution and sedimentation of microplastics in Taihu Lake
Researchers surveyed microplastic abundance in water, sediment, and inflowing rivers of Taihu Lake, China's third-largest freshwater lake, finding widespread contamination with fibers as the dominant type and higher concentrations near urban and agricultural shorelines.
Impact of Water Level Fluctuation on Microplastic Transportation and Redistribution in a Floodplain Lake System
This study examined how seasonal water level fluctuations in a Chinese floodplain lake affect microplastic transportation and redistribution, finding that flood pulses redistribute MPs across the floodplain and that rising and falling water levels create distinct accumulation patterns.
Unmasking Microplastic Pollution: A Study on the Distribution and Impact of Microplastics in Yuehai Lake, China
This study surveyed microplastic characteristics and distribution across water samples from Yuehai Lake in China, finding widespread contamination with fragments and fibers, and identifying local anthropogenic activities and atmospheric deposition as primary sources.