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61,005 resultsShowing papers similar to Effect of Microplastics on the Bioavailability of (Semi-)Metals in the Soil Earthworm Eisenia fetida
ClearCadmium and copper absorption by Eisenia fetida in the presence of different concentrations of microplastics
Researchers exposed earthworms (Eisenia fetida) to soil containing tire-derived microplastics alongside heavy metals cadmium and copper, finding that the microplastics increased the worms' uptake of both toxic metals. The results suggest that microplastics in soil act as carriers that make heavy metal contamination more bioavailable and dangerous for soil-dwelling organisms.
Impacts of polyethylene microplastics on bioavailability and toxicity of metals in soil
Researchers studied how polyethylene microplastics affect the bioavailability and toxicity of copper and nickel in soil using earthworms as test organisms. They found that adding microplastics to contaminated soil increased the bioavailability of the metals and enhanced their toxic effects on the earthworms. The study suggests that microplastics in soil can worsen heavy metal pollution by making metals more accessible and harmful to soil-dwelling organisms.
Microplastics aggravate the joint toxicity to earthworm Eisenia fetida with cadmium by altering its availability
Researchers exposed earthworms to polyethylene microplastics combined with cadmium and found that co-exposure caused significantly worse effects than either pollutant alone, including increased avoidance behavior, weight loss, and DNA damage. The microplastics increased the bioavailability of cadmium in soil by up to 1.43-fold and boosted cadmium accumulation in earthworm tissue by up to 2.65-fold. The study demonstrates that microplastics can worsen heavy metal toxicity to soil organisms by making the metals more accessible for uptake.
Uptake of Potentially Toxic Elements in Microplastic-Contaminated Soils: A Controlled Laboratory Study Using Eisenia Fetida
Researchers exposed earthworms to tire-derived microplastics in soil and found that levels above 100 mg/g caused significant buildup of toxic heavy metals — including chromium, lead, tin, and zinc — inside the worms' bodies. This shows microplastics act as carriers that help move harmful metals from soil into living organisms.
Microplastics impact the accumulation of metals in earthworms by changing the gut bacterial communities
Researchers exposed earthworms to three sizes of polystyrene microplastics (0.1, 10, and 100 micrometers) to study effects on metal accumulation and gut bacteria. The study found that microplastics reduced nickel and lead accumulation in earthworms while significantly altering gut bacterial communities. The results suggest that microplastics influence heavy metal bioavailability in soil organisms by changing gut microbiome composition.
Influence of aged and pristine polyethylene microplastics on bioavailability of three heavy metals in soil: Toxic effects to earthworms (Eisenia fetida)
Researchers studied how aging affects the ability of polyethylene microplastics to influence the bioavailability of zinc, lead, and cadmium in soil, and the resulting toxicity to earthworms. The study found that aged microplastics had different adsorption properties for heavy metals compared to pristine particles, which altered the bioavailability of these metals and affected earthworm health differently depending on microplastic concentration and aging status.
Size effects of polystyrene microplastics on the accumulation and toxicity of (semi-)metals in earthworms
Researchers studied how different sizes of polystyrene microplastics and nanoplastics affect the uptake of cadmium and arsenic in earthworms. They found that microplastics facilitated greater accumulation of these metals than nanoplastics by damaging intestinal integrity, with proteomic and metabolomic analysis revealing disruptions to the earthworms' immune and metabolic systems.
Ecotoxicological effects of microplastics and cadmium on the earthworm Eisenia foetida
Researchers studied the effects of microplastics alone and combined with the heavy metal cadmium on earthworms over 42 days. They found that both exposures reduced growth and increased mortality, with the combined treatment causing the most damage through increased oxidative stress. The study also revealed that microplastics can increase cadmium accumulation in earthworms by up to 161%, suggesting microplastics may worsen heavy metal contamination in soil ecosystems.
The effects of polystyrene microparticles on the environmental availability and bioavailability of As, Cd and Hg in soil for the land snail Cantareus aspersus
Researchers exposed land snails to soil contaminated with both polystyrene microplastics and toxic metals including arsenic, cadmium, and mercury. They found that while microplastics had limited effects on overall metal availability in soil, they did alter the speed and pattern of metal uptake into snail tissues. The study suggests that microplastics may subtly change how organisms absorb environmental contaminants, even when they do not dramatically change the total amount available.
Evaluation of the toxicity effects of microplastics and cadmium on earthworms
Researchers evaluated the combined toxicity of microplastics and cadmium on earthworms (Eisenia fetida) using both short-term and long-term exposure experiments. They found that the co-exposure produced interactive toxic effects on antioxidant enzyme activity and caused DNA damage, with toxicity severity influenced by microplastic particle size and concentration. The study suggests that the presence of microplastics in contaminated soils can modify how heavy metals like cadmium affect soil organisms.
Environmentally relevant concentrations of microplastics from agricultural mulch and cadmium negatively impact earthworms by triggering neurotoxicity and disrupting homeostasis
Researchers exposed earthworms to environmentally realistic levels of microplastics from agricultural mulch film combined with cadmium, a toxic heavy metal. The aged microplastics helped carry more cadmium into the earthworms' bodies, causing nerve damage, gut tissue injury, and disrupted metabolism. This study shows that microplastics in farm soil can make heavy metal contamination worse for soil organisms, with potential knock-on effects for the food chain.
Effects of polyethylene microplastics stress on soil physicochemical properties mediated by earthworm Eisenia fetida
Researchers exposed earthworms to polyethylene microplastics of two sizes and found that smaller particles (13 micrometers) were more toxic than larger ones (130 micrometers), reducing survival and growth more severely. The microplastics caused oxidative stress in the worms and altered key soil properties including pH and organic carbon content. Since earthworms play a vital role in maintaining healthy soil for agriculture, this damage could affect soil quality and ultimately the food grown in microplastic-contaminated farmland.
Earthworms on a microplastics diet
Researchers found that environmentally relevant concentrations of polyethylene microplastics added to plant litter on soil surfaces led to reduced growth and elevated mortality in the earthworm Lumbricus terrestris, and that earthworms may themselves transport ingested microplastics deeper into soils.
Bioavailability of pyrene in soil affected by polylactic acid and polystyrene microplastics and their toxic effects on earthworms (Eisenia fetida)
Researchers investigated how polylactic acid and polystyrene microplastics interact with the pollutant pyrene in soil and affect earthworm health. They found that while microplastics alone did not break down the earthworms' antioxidant defenses, combining them with pyrene produced more severe toxic effects including neurotoxicity and disruption of gut microbiota. The study suggests that microplastics in contaminated soils can amplify the harmful effects of other pollutants on soil organisms.
Toxicological effects of polystyrene microplastics on earthworm (Eisenia fetida)
Researchers exposed earthworms to two sizes of polystyrene microplastics in soil for 14 days and found evidence of intestinal cell damage, oxidative stress, and DNA damage. The larger particles accumulated more in earthworm intestines, while both sizes triggered changes in key antioxidant markers. The study demonstrates that microplastic contamination in soil can cause measurable biological harm to important soil organisms.
Effects of polystyrene microplastics on accumulation of pyrene by earthworms
Polystyrene microplastics and nanoplastics were found to significantly alter the accumulation of the polycyclic aromatic hydrocarbon pyrene in earthworms compared to pyrene exposure alone, with nanoplastics producing greater effects than microplastics. The study reveals that plastic particles can modify organic pollutant bioavailability to soil invertebrates, with implications for combined contamination risk assessments.
A Systematic Review of Nano- and Microplastic (NMP) Influence on the Bioaccumulation of Environmental Contaminants: Part I—Soil Organisms
This systematic review investigates whether microplastics and nanoplastics help other environmental contaminants like heavy metals and pesticides accumulate in soil organisms. The research finds that the presence of plastic particles can change how much of these pollutants earthworms and other soil creatures absorb. This matters because contaminants that build up in soil organisms can eventually work their way into the food we grow and eat.
Effects of nano- and microplastics on the bioaccumulation and distribution of phenanthrene in the soil feeding earthworm Metaphire guillelmi
Researchers investigated how nano- and microplastics affect the bioaccumulation of phenanthrene (a polycyclic aromatic hydrocarbon) in soil-feeding earthworms using C-radioactive labeling, finding that fine plastic particles decreased phenanthrene bioavailability in soil and reduced uptake by Metaphire guillelmi earthworms, with nanoplastics showing a stronger dilution effect than microplastics. Soil properties remained the dominant factor controlling bioaccumulation efficiency, and only limited vector effects of the plastic particles were observed.
Impacts of microplastics and heavy metals on the earthworm Eisenia fetida and on soil organic carbon, nitrogen, and phosphorus
Researchers found that co-contamination by polypropylene microplastics and heavy metals (Cu, Cr, Zn) had synergistic adverse effects on earthworms and soil quality, reducing organic carbon and nitrogen levels more than either contaminant alone.
Insight into Bioaccumulation of Decabromodiphenyl Ethane in Eisenia fetida Increased by Microplastics
Researchers found that microplastics made from electronics casings significantly increased the accumulation of a brominated flame retardant chemical in earthworms over time. While the microplastics initially slowed absorption of the chemical, after 28 days they promoted greater bioaccumulation by altering the soil environment and the earthworms' gut bacteria. The study suggests that the co-occurrence of electronic waste microplastics and flame retardants in soil may amplify chemical exposure in soil organisms.
Exposure to microplastics lowers arsenic accumulation and alters gut bacterial communities of earthworm Metaphire californica
Researchers examined how microplastics interact with arsenic contamination in earthworms and their gut bacteria. They found that microplastics actually reduced arsenic accumulation in earthworm tissues by adsorbing the arsenic and lowering its bioavailability. The study suggests that while microplastics altered gut bacterial communities, their presence may lessen arsenic toxicity in soil organisms by changing how the metal moves through the food chain.
The effect of polystyrene microplastic and biosolid application on the toxicity and bioaccumulation of cadmium for Enchytraeus crypticus
Researchers tested how polystyrene microplastics and biosolid application jointly affected cadmium toxicity and bioaccumulation in the soil worm Enchytraeus crypticus, finding that biosolid application altered metal availability in ways that modified the toxicity of cadmium under MP presence. The study highlights the complexity of predicting contaminant risks in agricultural soils with multiple amendment inputs.
Microplastics and earthworms in soils: A case study on translocation, toxicity and fate
This conference abstract presents research on how earthworms in agricultural soils interact with microplastics, examining whether worms translocate particles deeper into soil, experience toxic effects, and alter the fate of microplastic contamination. Earthworms are key soil engineers, and their exposure to microplastics could have cascading effects on soil health.
Microplastics Reduce the Negative Effects of Litter-Derived Plant Secondary Metabolites on Nematodes in Soil
Researchers found that microplastics in soil reduced the toxic effects of plant-derived chemicals (phenolic compounds from leaf litter) on soil nematodes. The microplastics appeared to absorb the plant chemicals, reducing their bioavailability to the worms. This shows that microplastics can change soil chemistry in unexpected ways, potentially altering how soil ecosystems function.