We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Papers
61,005 resultsShowing papers similar to [Response of Water-Vallisneria natans-Sediment System to Polyethylene Microplastics].
ClearPolyethylene microplastics interfere with the nutrient cycle in water-plant-sediment systems
Researchers studied how polyethylene microplastics affect nutrient cycling in freshwater systems containing submerged plants and sediment. They found that the microplastics significantly reduced nitrogen and carbon content in plant leaves and disrupted the microbial communities in sediment responsible for nutrient processing. The study demonstrates that microplastic pollution can interfere with fundamental biogeochemical cycles that maintain the health of aquatic ecosystems.
Ecological impacts of polylactic acid and polylactic acid-polyethylene microplastics on freshwater ecosystems: Insights from a water–Vallisneria natans–sediment system
Researchers tested the effects of biodegradable PLA and PLA-polyethylene blend microplastics on a freshwater ecosystem containing aquatic plants and sediment. Both types of microplastics altered water chemistry, reduced plant growth, increased oxidative stress, and shifted the microbial communities in both water and sediment. The study demonstrates that even biodegradable plastic alternatives can disrupt freshwater ecosystems in meaningful ways.
Responses of submerged plant Vallisneria natans growth and leaf biofilms to water contaminated with microplastics
Researchers exposed the submerged aquatic plant Vallisneria natans to environmentally relevant concentrations of microplastics and observed increased antioxidant enzyme activity and cellular organelle damage. The microplastics also altered the microbial community composition on leaf biofilms. The findings indicate that even moderate microplastic concentrations can disrupt plant defense mechanisms and shift the microbial ecology of aquatic environments.
Unraveling the toxic mechanisms of microplastics in aquatic ecosystem: A case study on Vallisneria natans and Myriophyllum verticillatum
Researchers exposed two submerged aquatic plant species (Vallisneria natans and Myriophyllum verticillatum) to PVC, polystyrene, and polyethylene microplastics at three concentrations, finding that all three types significantly inhibited photosynthesis and growth and triggered oxidative stress, with effects varying by plastic type and plant species.
Microplastic residues in wetland ecosystems: Do they truly threaten the plant-microbe-soil system?
Researchers used a controlled pot experiment to assess microplastic effects on wetland plant growth, soil microbial communities, and nutrient cycling, finding that MPs altered soil enzyme activity and shifted bacterial community composition but had variable effects on plant growth depending on plastic type.
Effects of microplastics on nitrogen and phosphorus cycles and microbial communities in sediments
Researchers found that PVC, PLA, and polypropylene microplastics altered nitrogen and phosphorus cycling in freshwater sediments by shifting microbial community composition, with effects varying by polymer type and biodegradability.
Is soft-sediments ecosystem service delivery compromised due to microplastic pollution?
This review examines how microplastic pollution may compromise ecosystem service delivery in soft-sediment habitats, focusing on potential impacts on microphytobenthic microbial communities that underpin nutrient cycling, sediment stabilization, and food web productivity. The authors argue that because soft sediments act as microplastic sinks, their resident microbial communities face disproportionate exposure, and call for holistic research linking microplastic effects on microbial diversity and biogeochemical function to broader ecosystem service outcomes.
Shifting enzyme activity and microbial composition in sediment coregulate the structure of an aquatic plant community under polyethylene microplastic exposure
Researchers investigated how polyethylene microplastics affect underwater plant communities and found that the impact varies significantly by species. Canopy-forming plants actually grew more under microplastic exposure, while rosette-forming species declined sharply, shifting the overall community structure. The study suggests that microplastics in freshwater sediments can reshape aquatic ecosystems by altering enzyme activity and microbial composition in ways that favor some plant species over others.
The distribution and ecological effects of microplastics in an estuarine ecosystem
Researchers surveyed 22 intertidal sites and found that microplastic abundance, size, and diversity correlated with benthic microalgal communities and sediment biostabilization properties in an estuarine ecosystem.
Effects of microplastics/nanoplastics on Vallisneria natans roots and sediment: Size effect, enzymology, and microbial communities
This study compared how polystyrene micro- and nanoplastics of three different sizes (20 nm, 200 nm, and 2 µm) affected the aquatic plant Vallisneria natans and surrounding sediment. Smaller particles adhered more readily to roots and altered root growth, while larger particles caused greater oxidative stress. All sizes disrupted sediment enzyme activity and shifted microbial communities on root surfaces, reducing beneficial bacteria like Proteobacteria. The findings show that particle size is a key variable in predicting microplastic harm to aquatic plant ecosystems.
The impacts of polyethylene terephthalate microplastics (mPETs) on ecosystem functionality in marine sediment
Researchers found that PET microplastics disrupted key ecosystem functions in marine sediments over a 31-day experiment, impairing nutrient cycling and the activity of bivalves and microphytobenthos. The results suggest that even moderate concentrations of microplastics can harm the ecological services provided by seafloor communities.
Impact of Microplastic on Freshwater Sediment Biogeochemistry and Microbial Communities Is Polymer Specific
Researchers used a microcosm approach to test how three common plastic types found in Great Lakes sediments affect freshwater benthic biogeochemistry and microbial communities. They found that each polymer had distinct effects: PET fibers decreased ecosystem metabolism, PVC particles increased nutrient uptake, and tire-derived rubber most substantially altered microbial community function. The study highlights that the environmental impact of microplastics in freshwater sediments depends heavily on the specific polymer type involved.
Long-term exposure of a free-living freshwater micro- and meiobenthos community to microplastic mixtures in microcosms
Researchers exposed a natural freshwater micro- and meiobenthos community to microplastic mixtures in long-term microcosm experiments, finding community-level effects that differ from single-species studies and highlighting the importance of realistic multi-polymer exposure scenarios.
The effects of polypropylene microplastics on the removal of nitrogen and phosphorus from water by Acorus calamus, Iris tectorum and functional microorganisms
Researchers investigated how polypropylene microplastics affect the ability of aquatic plants and their associated microorganisms to remove nitrogen and phosphorus from water. They found that microplastic stress reduced the nutrient absorption capacity of the plants and altered the microbial communities responsible for nitrogen and phosphorus cycling. The study suggests that microplastic pollution may undermine the effectiveness of wetland-based water purification systems.
Unveiling the impact of microplastics with distinct polymer types and concentrations on tidal sediment microbiome and nitrogen cycling
Researchers tested how five different types of microplastics at varying concentrations affect microbial communities and nitrogen cycling in tidal sediments over 30 days. They found that microplastics generally reduced microbial diversity and enhanced nitrogen fixation, with biodegradable PLA plastic showing concentration-dependent effects. The study suggests that microplastic contamination in coastal sediments can disrupt important nutrient cycling processes driven by microorganisms.
Microplastics increase soil microbial network complexity and trigger diversity-driven community assembly
Researchers found that microplastics in soil increased bacterial network complexity and shifted microbial community assembly in a diversity-dependent manner, with high-density polyethylene causing more harm to plant growth than polystyrene or polylactic acid particles.
Microplastics Alter Growth and Reproduction Strategy of Scirpus mariqueter by Modifying Soil Nutrient Availability
Researchers exposed the coastal wetland plant Scirpus mariqueter to four microplastic types (PP, PE, PS, PET) at three concentrations and found microplastics altered plant biomass, vegetative traits, and reproductive allocation, with PET and PS causing the strongest effects by disrupting soil nutrient availability.
Legacy effect of microplastics on plant–soil feedbacks
Researchers examined the legacy effects of microplastic contamination on plant-soil feedbacks using soil previously conditioned with various microplastic types, finding that residual microplastics altered soil microbial communities and nutrient cycling in ways that affected subsequent plant growth.
Environmentally relevant concentrations of polyethylene microplastics negatively impact the survival, growth and emergence of sediment-dwelling invertebrates
Researchers exposed sediment-dwelling invertebrates, including midges and worms, to environmentally realistic concentrations of polyethylene microplastics and found significant reductions in survival, growth, and emergence rates. The study provides evidence that even at concentrations currently found in freshwater sediments, microplastics can negatively affect benthic organisms that play key roles in ecosystem functioning.
Toxicity mechanism of microplastics on the growth traits and metabolic pathways of Vallisneria natans under different light environments
Researchers examined how microplastics affect the aquatic plant Vallisneria natans under different light conditions and found that strong light significantly increased microplastic accumulation on leaves and roots. The combination of high light and microplastics caused the most severe disruption to photosynthesis, energy metabolism, and triggered elevated oxidative stress. The findings suggest that environmental conditions like light intensity can amplify the harmful effects of microplastic pollution on freshwater plants.
Discrepancy strategies of sediment abundant and rare microbial communities in response to floating microplastic disturbances: Study using a microcosmic experiment
Using microcosm experiments with fluvial sediment exposed to four plastic types, researchers found that floating microplastics altered sediment microbial diversity and reduced bacteria involved in carbon and nitrogen cycling. Abundant microbial taxa were more sensitive to microplastic disturbance than rare taxa, and microplastics decreased network complexity and increased negative species interactions in microbial communities.
[Effects of PE and PLA Microplastics on Nitrogen and Phosphorus Elements in Sediments of Zhalong Wetland].
A controlled lab experiment tested how adding polyethylene (PE) and polylactic acid (PLA) microplastics at different concentrations affected nitrogen and phosphorus cycling in wetland sediments from China's Zhalong wetland. Both microplastic types significantly reduced available nitrogen and phosphorus in the sediment, with effects depending on concentration and microplastic type. These nutrient disruptions could impair the productivity of wetland ecosystems and alter water quality in connected water bodies.
In Situ Effects of a Microplastic Mixture on the Community Structure of Benthic Macroinvertebrates in a Freshwater Pond
Researchers conducted an in situ mesocosm experiment adding a realistic microplastic mixture to freshwater pond sediments and monitored benthic macroinvertebrate communities over time, finding that MP exposure shifted community composition and reduced taxonomic richness at environmentally relevant concentrations.
Polyethylene Microplastic Particles Alter the Nature, Bacterial Community and Metabolite Profile of Reed Rhizosphere Soils
Researchers found that polyethylene microplastic particles alter the bacterial community composition, soil environmental factors, and metabolite profiles of reed rhizosphere soils, with effects increasing at higher microplastic concentrations and showing distinct interactions with reed biomass.