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61,005 resultsShowing papers similar to Soil Invertebrates Generate Microplastics From Polystyrene Foam Debris
ClearTerrestrial Isopods Generate Microplastics from Low-Density Polyethylene Without Effects on Survival
This study found that terrestrial isopods physically fragmented low-density polyethylene plastic into microplastic particles during feeding and locomotion, without experiencing significant effects on survival. The results suggest that soil invertebrates may contribute to secondary microplastic generation in terrestrial ecosystems.
Burrowing invertebrates induce fragmentation of mariculture Styrofoam floats and formation of microplastics
Researchers found that burrowing invertebrates on Styrofoam floats used in Chinese mariculture operations physically fragment the foam into microplastics through their burrowing activity, demonstrating that biological fragmentation by marine invertebrates is an important and previously underappreciated pathway for generating Styrofoam-derived microplastics.
Formation of microplastics by polychaetes (Marphysa sanguinea) inhabiting expanded polystyrene marine debris
Researchers found that polychaete worms (Marphysa sanguinea) inhabiting expanded polystyrene marine debris actively fragment the material, with lab experiments showing a single individual can produce hundreds of thousands of EPS microplastic particles per year. The study reveals marine invertebrates as a previously underappreciated biological driver of microplastic generation from larger plastic debris.
Interaction of Invertebrates and Synthetic Polymers in Soil: A Review
This review summarizes how microplastics in soil harm invertebrates including nematodes, springtails, and earthworms, while some soil animals can fragment or ingest and transport plastic particles. The presence of microplastics in soil disrupts the gut function of soil organisms that play critical roles in maintaining healthy, productive soils.
Polystyrene-degrading bacteria in the gut microbiome of marine benthic polychaetes support enhanced digestion of plastic fragments
Researchers found that marine worms called clamworms harbor gut bacteria capable of breaking down polystyrene foam, but this digestion also generates microplastics averaging 0.6 mm in diameter, meaning these worms both degrade and produce microplastics — complicating their role in marine plastic pollution.
Effects of different sizes of polystyrene micro(nano)plastics on soil microbial communities.
This study tested how polystyrene micro- and nanoplastic particles of three sizes affect soil microbial communities and nutrient cycling, finding that smaller particles caused greater disruption to nitrogen cycling and microbial activity. The results suggest that as plastics in soil fragment into smaller pieces over time, their impact on soil biology and fertility may worsen.
Underestimated and ignored? The impacts of microplastic on soil invertebrates—Current scientific knowledge and research needs
This review highlights the critical gap in research on how microplastics affect soil invertebrates, noting that soil ecosystems receive far more plastic pollution than oceans yet the ecological consequences for soil fauna remain poorly understood and largely unstudied.
Effects of polystyrene microplastics on the fitness of earthworms in an agricultural soil
Researchers exposed earthworms to polystyrene microplastics in agricultural soil at various concentrations. The study found that low concentrations had little effect, but high concentrations (1% and above) significantly inhibited growth and increased mortality, suggesting microplastic pollution poses ecological risks to soil organisms in terrestrial ecosystems.
Unveiling Fragmentation of Plastic Particles during Biodegradation of Polystyrene and Polyethylene Foams in Mealworms: Highly Sensitive Detection and Digestive Modeling Prediction
Researchers discovered that mealworms biodegrading polystyrene and polyethylene foams generate micro- and nanoplastic fragments during the digestion process, despite removing over 70% of the ingested plastic. The study developed a digestive biofragmentation model to predict plastic fragmentation patterns, suggesting that insect-based plastic biodegradation may create secondary contamination that warrants further assessment.
Effect of Macroplastic on Soil Invertebrates: a Case Study Using Morphological and Molecular Approaches
Large plastic fragments — not just microplastics — were found to harm soil invertebrate communities in Russia, reducing diversity and abundance in contaminated plots, suggesting that macroplastic pollution poses underappreciated risks to soil ecosystems.
Plastic pollution in terrestrial ecosystems: Current knowledge on impacts of micro and nano fragments on invertebrates
This review summarizes research on how micro- and nanoplastics affect soil-dwelling invertebrates like earthworms and insects, finding that effects vary widely depending on plastic type, shape, concentration, and exposure time. While no broad conclusions could be drawn, the documented sublethal effects on soil organisms could disrupt the soil ecosystems that support the crops humans depend on for food.
What do we know about how the terrestrial multicellular soil fauna reacts to microplastic?
This review analyzed the available literature on how soil-dwelling animals respond to microplastics and found evidence of uptake, bioaccumulation, and harmful effects across many groups including earthworms, springtails, and beetles. Most studies used high concentrations not yet found in real soils, limiting conclusions about current environmental risks.
The digestive system of a cricket pulverizes polyethylene microplastics down to the nanoplastic scale
This study found that crickets (Gryllodes sigillatus) physically ground ingested polyethylene microplastics down to nanoplastic-scale particles through their digestive processes, a finding with implications for how insects contribute to nanoplastic generation and dispersal in terrestrial ecosystems.
What do we know about how the terrestrial multicellular soil fauna reacts to microplastic?
This review analyzed published studies on how multicellular soil organisms (including earthworms, mites, springtails, and nematodes) ingest and respond to microplastics, finding that most studies used unrealistically high concentrations and that ecologically relevant effects on soil fauna remain poorly characterized.
What do we know about how the terrestrial multicellular soil fauna reacts to microplastic?
This review synthesized studies on how soil-dwelling animals — including earthworms, insects, and mites — respond to microplastic contamination, finding evidence of ingestion, tissue accumulation, and harmful effects across multiple soil organism groups. However, most studies used unrealistically high concentrations, making it difficult to draw firm conclusions about risks at current environmental levels.
Polyester microplastic fibers affect soil physical properties and erosion as a function of soil type
Researchers investigated the effects of polystyrene microplastics on the soil nematode Caenorhabditis elegans, finding reduced reproduction, altered locomotion, and increased expression of stress-response genes at environmentally relevant concentrations.
Identification and quantification of macro- and microplastics on an agricultural farmland
Researchers examined how polystyrene microplastics affect the soil-dwelling springtail Folsomia candida and found that exposure altered gut microbiota composition and reduced reproductive output. The microplastics disrupted the balance of beneficial bacteria in the gut of these important soil organisms. The study suggests that microplastic contamination in soils could have broader consequences for soil health by affecting the organisms that help maintain ecosystem functions like nutrient cycling.
Transport of microplastics by two collembolan species
Researchers exposed two species of soil springtails (collembolans) to surface-applied microplastics and found that these small invertebrates can transport plastic particles vertically into deeper soil layers as they move. This is one of the first demonstrations that soil fauna can redistribute microplastics downward in terrestrial ecosystems.
Microplastics are transferred by soil fauna and regulate soil function as material carriers
Springtail soil invertebrates were found to actively transport microplastics through soil and to transfer them and their adsorbed contaminants during feeding activity. Microplastic-laden springtails also suppressed soil organic matter decomposition, demonstrating that soil fauna mediate both the spatial redistribution and the functional impacts of microplastic pollution.
Microplastic digestion generates fragmented nanoplastics in soils and damages earthworm spermatogenesis and coelomocyte viability
Researchers discovered that earthworms can fragment polyethylene microplastics into even smaller nanoplastics through their digestive process in soil. The study also found that microplastic exposure damaged earthworm reproductive cells and immune cells, suggesting that the biological breakdown of microplastics in soil creates smaller particles that may be even more concerning for ecosystem health.
Species sensitivity distributions of micro- and nanoplastics in soil based on particle characteristics
Researchers analyzed data from 74 studies to assess which soil organisms are most sensitive to micro and nanoplastics, finding that smaller particles and polystyrene types pose the greatest ecological risk. The hazardous concentration threshold for soil organisms was estimated at about 88 mg per kilogram of soil. This is the first study to factor in microplastic physical properties when calculating species sensitivity, providing a foundation for soil pollution guidelines.
Biodegradation and disintegration of expanded polystyrene by land snails Achatina fulica
Researchers found that the land snail Achatina fulica can ingest expanded polystyrene foam and break it down, with each snail consuming about 18.5 mg over four weeks and achieving a 30.7% mass reduction in egested particles. Chemical analysis confirmed partial biodegradation with the formation of oxidized intermediate compounds, and the snails' gut microbiome shifted significantly after polystyrene ingestion. The study suggests that soil invertebrates like land snails may play a meaningful role in the environmental fate and partial breakdown of polystyrene plastic pollution.
Size-dependent effects of polystyrene plastic particles on the nematode Caenorhabditis elegans as related to soil physicochemical properties.
This study exposed the nematode Caenorhabditis elegans to two sizes of polystyrene particles in both liquid and soil media and found that smaller particles were more toxic in liquid while larger particles caused greater harm in soil. The results show that the physical properties of the surrounding environment significantly influence how microplastics harm soil organisms.
Soil microplastic characteristics and the effects on soil properties and biota: A systematic review and meta-analysis
Meta-analysis of 2,886 experimental groups found that microplastics significantly decreased soil bulk density and aggregate stability, indicating structural damage, while also reducing plant root biomass and soil phosphatase activity. Invertebrates were more sensitive to microplastics than other soil organisms, as particles can pass through nematode gut walls causing oxidative stress and altered gene expression.