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61,005 resultsShowing papers similar to Occurrence and distribution of microplastics in wetlands
ClearNon-negligible impact of microplastics on wetland ecosystems
This review examines microplastic pollution in wetland ecosystems, which sit between land and water and act as natural filters. Microplastics in wetlands come from sewage, agricultural runoff, and atmospheric deposition, with polyethylene and polypropylene fibers and fragments being the most common types found. The paper highlights that microplastics can harm wetland plants, animals, and microbes, and may even increase greenhouse gas emissions by serving as an unusual carbon source for soil microorganisms.
Source, fate, toxicity, and remediation of micro-plastic in wetlands: A critical review
Researchers reviewed how microplastics enter, accumulate in, and damage natural wetlands — ecosystems that filter water and support biodiversity — finding that while wetlands may actually trap plastic particles like a sink, the resulting contamination poses serious ecological risks that are still poorly understood.
From source to sink: Review and prospects of microplastics in wetland ecosystems
This review synthesizes sources, distribution pathways, migration, and fate of microplastics in wetland ecosystems, which occupy the boundary zone between aquatic and terrestrial environments. It identifies wetlands as both important sinks and potential secondary sources of microplastics and calls for more research on microplastic dynamics in these transitional habitats.
A review on microplastics pollution in coastal wetlands
Researchers reviewed existing studies on microplastic pollution in coastal wetlands — ecosystems like mangroves, salt marshes, and tidal flats — summarizing where microplastics accumulate, how they get there, and how they affect wildlife and ecosystem function. These habitats are especially vulnerable because they sit at the boundary between land and sea, trapping plastics carried by both rivers and ocean tides.
Research progresses of microplastic pollution in freshwater systems
This review examines the widespread presence of microplastics in freshwater systems around the world, finding concentrations that vary by several orders of magnitude across different regions. Researchers identified fibers as the most common shape, with polypropylene and polyethylene as the dominant polymer types, primarily originating from human activities like sewage discharge. The study highlights concerns about microplastic contamination in drinking water and its potential effects on aquatic organisms.
Urban Microplastic Pollution Revealed by a Large-Scale Wetland Soil Survey
Researchers conducted a large-scale survey of wetland soils across an urban area and found an average of 379 microplastic particles per kilogram, with abundance closely linked to proximity to the city's economic center. Polypropylene was the most common polymer type, and fiber and fragment shapes dominated the samples. The study found that atmospheric particle pollution and heavy metal concentrations in soil were strongly correlated with microplastic levels, suggesting shared urban pollution sources.
Recent advances towards micro(nano)plastics research in wetland ecosystems: A systematic review on sources, removal, and ecological impacts
Wetland ecosystems act as important sinks for micro- and nanoplastics, which were found to cause ecotoxicological effects on wetland plants, animals, and microbial communities, including shifts in microbial composition relevant to pollutant removal. Micro/nanoplastics exposure also affected conventional pollutant removal efficiency and greenhouse gas emissions from wetland systems.
Distribution Characteristics and Sources of Microplastics in Inland Wetland Ecosystem Soils
Researchers studied microplastic distribution across river, constructed, and lake wetlands in an inland ecosystem and found abundances ranging from 532 to 4,309 items per kilogram of soil. Lake wetlands emerged as a major sink for microplastics, while constructed wetlands did not significantly remove them. The study identified aquaculture, agriculture, and domestic waste as the primary sources of microplastic pollution in these wetland environments.
Emerging microplastics in the environment: Properties, distributions, and impacts
This review provides a comprehensive overview of microplastic pollution, covering the most common types of plastics found in the environment, their physical characteristics, and how they are distributed across water, soil, and air. Researchers summarized the potential harmful effects of microplastics on ecosystems and living organisms. The study highlights significant knowledge gaps that still need to be addressed to fully understand the environmental and health risks of these tiny particles.
Microplastics in ecosystems: Critical review of occurrence, distribution, toxicity, fate, transport, and advances in experimental and computational studies in surface and subsurface water
This review provides a broad overview of microplastic contamination across freshwater, marine, and land environments, finding concentrations ranging from negligible to hundreds of thousands of particles per kilogram of sediment. The most common types are polypropylene, polystyrene, polyethylene, and PET, spread by wastewater discharge, stormwater runoff, and poor waste management. The wide variability in contamination levels makes it difficult to assess overall risk to ecosystems and human health.
Microplastics in freshwater and marine ecosystems: Occurrence, characterization, sources, distribution dynamics, fate, transport processes, potential mitigation strategies, and policy interventions
This review summarizes research on microplastic pollution across freshwater and marine ecosystems on all six continents, finding that polyethylene and polypropylene are the most common types found in water. The study highlights that microplastics serve as carriers for toxic chemicals and can move up the food chain, ultimately posing risks to human health through seafood consumption and drinking water.
Microplastics profile in constructed wetlands: Distribution, retention and implications
This study assessed microplastic distribution, retention, and implications within constructed wetlands used for wastewater treatment, finding that wetlands trap substantial quantities of MPs but that retention efficiency varies by plant species and wetland design. The results suggest constructed wetlands both remove and potentially accumulate MPs as a secondary pollution source.
Microplastics in aquatic systems: A review of occurrence, monitoring and potential environmental risks
Researchers review the presence of microplastics — tiny plastic fragments less than 5 mm — across freshwater and marine environments worldwide, finding that polyethylene, polypropylene, and polystyrene are the most commonly detected types. Exposure disrupts feeding, movement, and reproduction in aquatic wildlife, and the authors call for standardized measurement methods and legal limits to protect ecosystems.
Microplastic shape influences fate in vegetated wetlands
Researchers tested how different shapes of microplastics, including fibers, fragments, and films, are captured by vegetated coastal wetlands compared to unvegetated areas. They found that microplastic shape significantly influenced trapping rates, with fibers being retained most effectively by vegetation. The study indicates that coastal wetland habitats may serve as natural filters for microplastic pollution, but their effectiveness depends on the type of plastic entering the system.
Microplastic in water and wastewater: occurrence, toxicity, analytical approach, and remediation
This comprehensive review analyzed microplastic occurrence and toxicity in water and wastewater across studies from all continents, finding polyethylene and polypropylene as the most common polymer types and reviewing detection, quantification, and remediation methods.
Microplastics as Emerging Environmental Contaminants: Sources, Distribution and Ecological Implications
This review examines the sources, environmental distribution, and ecological implications of microplastics, which are now found across aquatic, terrestrial, and atmospheric environments worldwide. The study discusses how these persistent plastic fragments can enter food webs and highlights priorities for future monitoring, risk assessment, and pollution mitigation efforts.
A review on the occurrence, distribution, characteristics, and analysis methods of microplastic pollution in ecosystem s
This review covers the occurrence, distribution, characteristics, and analytical methods for microplastics across environmental matrices, emphasizing their small size and resistance to degradation as key factors driving persistence and risk. It identifies gaps in standardized monitoring methods needed for global comparisons.
Microplastics as novel sedimentary particles in coastal wetlands: A review
This review examined microplastics as novel sedimentary particles in coastal wetlands, arguing that their ubiquity, persistence, and interactions with natural particles warrant treating them as a new class of sedimentary material. The authors found that plastics buried in wetland sediments may be retained for longer than models predict due to high accretion rates, and suggest they can serve as historical pollution markers.
Microplastics occurrence and fate in full-scale treatment wetlands
Researchers assessed microplastic occurrence and fate across full-scale treatment wetlands, finding that constructed wetlands effectively remove a significant proportion of MPs from wastewater but that removal efficiency varies with wetland design and MP characteristics.
Fate and Effects of Macro- and Microplastics in Coastal Wetlands
Researchers compiled data from 112 studies to evaluate how macro- and microplastics accumulate in and affect coastal wetlands including mangroves, salt marshes, and seagrass beds. They found that plastic concentrations in wetland sediments and marine animals were roughly 200 times higher than in the water column, indicating these ecosystems act as major plastic sinks. The study warns that plastic accumulation can alter sediment properties, harm wildlife, and disrupt the carbon storage function of these critical habitats.
Microplastics in the environment: Recent developments in characteristic, occurrence, identification and ecological risk
This review provides a comprehensive overview of microplastic pollution across oceans, freshwater, soil, and the atmosphere, examining their sources, movement patterns, and ecological risks. Researchers found that while coastal environments have been well studied, much less is known about microplastic contamination in terrestrial ecosystems. The study synthesizes data on microplastic toxicity, bioaccumulation in organisms, and environmental fate to support better risk assessment.
Microplastics in the Aquatic Environment: Overview of the Problem and Current Research Areas
This review summarizes the current state of microplastic research in aquatic environments, covering sources, distribution, ecological impacts, and knowledge gaps. The paper identifies priority research areas needed to better understand and manage microplastic contamination in water bodies.
Microplastics pollution in different aquatic environments and biota: A review of recent studies
This review provides a comprehensive summary of microplastic pollution across marine and freshwater environments, covering sources, detection methods, and biological impacts. Researchers found that microplastics are present in diverse forms including fragments, fibers, and foams, and are ingested by a wide range of aquatic species. The study highlights the need for improved detection techniques and more research on the effects of microplastic ingestion on both wildlife and humans.
Occurrence, determination and environmental fate of microplastics in aquatic system
This review examines the occurrence, detection methods, and environmental fate of microplastics across aquatic systems worldwide. Researchers synthesize evidence showing microplastics are ubiquitous in rivers, lakes, and oceans, and highlight the need for standardized monitoring and better understanding of long-term ecological impacts.