Papers

61,005 results
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Article Tier 2

Role of saltmarsh systems in estuarine trapping of microplastics

Researchers found that saltmarsh vegetation significantly enhances the trapping of microplastics in estuarine sediments compared to adjacent bare mudflats, suggesting that these coastal ecosystems act as important sinks for plastic pollution under tidal flow conditions.

2022 Scientific Reports 34 citations
Article Tier 2

Microplastic distribution characteristics and storage in a multi-species saltmarsh

This study examined how microplastics are distributed and stored in a multi-species saltmarsh ecosystem. Saltmarshes trapped significant quantities of plastic particles, acting as long-term sinks that expose the organisms living in these coastal habitats to ongoing plastic contamination.

2023
Article Tier 2

Salt marshes as the final watershed fate for meso- and microplastic contamination: A case study from Southern Brazil

Researchers found that salt marshes act as significant sinks for meso- and microplastics transported through a watershed, with plastic particles accumulating in marsh sediments at densities reflecting upstream land use — highlighting salt marshes as both indicators of catchment-wide plastic pollution and potential long-term reservoirs.

2022 The Science of The Total Environment 38 citations
Article Tier 2

The Role of Estuarine Wetlands (Saltmarshes) in Sediment Microplastics Retention

Researchers compared microplastic levels in vegetated saltmarsh sediments versus bare sediments in a Portuguese estuary and found that saltmarsh vegetation traps significantly more plastic particles. Fibers were the most common type of microplastic found, followed by fragments. The study suggests that coastal wetlands act as natural filters for microplastic pollution, which has implications for both conservation and pollution management.

2023 Water 43 citations
Article Tier 2

Microplastics in saltmarshes: developing extraction methods and examining past accumulation

This thesis developed extraction methods for detecting microplastics in saltmarsh sediments and examined how these particles accumulate over time in coastal habitats. Saltmarshes act as natural filters and carbon stores, making their contamination by microplastics a concern for both ecosystem function and long-term pollution tracking.

2019 Liverpool John Moores University
Article Tier 2

Salt marsh sediments act as sinks for microplastics and reveal effects of current and historical land use changes

Researchers found that salt marsh sediments along the New England coast act as traps for microplastics, with levels rising sharply in more urbanized watersheds — and sediment cores show this buildup has been accelerating since the 1950s. The findings highlight coastal wetlands as important archives for tracking the history of plastic pollution.

2021 Environmental Advances 61 citations
Article Tier 2

What influences microplastic trapping in coastal marshes? Exploring vegetation diversity as a driver of accumulation

This study explored how the diversity of plant species in coastal marshes influences how many microplastics get trapped there, finding that vegetation composition is a meaningful driver of plastic accumulation. Coastal marshes act as natural filters catching plastic before it reaches the open ocean, so understanding what makes them more or less effective has implications for both conservation and plastic pollution management.

2026 Zenodo (CERN European Organization for Nuclear Research)
Article Tier 2

What influences microplastic trapping in coastal marshes? Exploring vegetation diversity as a driver of accumulation

This study explored how the diversity of plant species in coastal marshes influences how many microplastics get trapped there, finding that vegetation composition is a meaningful driver of plastic accumulation. Coastal marshes act as natural filters catching plastic before it reaches the open ocean, so understanding what makes them more or less effective has implications for both conservation and plastic pollution management.

2026 Zenodo (CERN European Organization for Nuclear Research)
Article Tier 2

Microplastic sequestration in saltmarsh sediments from Eastern Brazil

Researchers characterized microplastic accumulation in saltmarsh sediments from Todos os Santos Bay, Brazil, finding high sequestration rates in vegetated coastal zones. The results highlight saltmarshes as important hotspots for microplastic deposition in tropical coastal environments.

2024 Zenodo (CERN European Organization for Nuclear Research)
Article Tier 2

Microplastic sequestration in saltmarsh sediments from Eastern Brazil

Researchers examined microplastic sequestration in saltmarsh sediments from Todos os Santos Bay in eastern Brazil, a bay subject to substantial industrial and urban inputs. Saltmarsh sediments accumulated high concentrations of microplastics, functioning as long-term sinks for plastic pollution in this coastal ecosystem.

2024 Zenodo (CERN European Organization for Nuclear Research)
Article Tier 2

Identification of tidal trapping of microplastics in a temperate salt marsh system using sea surface microlayer sampling

Researchers used sea surface microlayer sampling to investigate tidal trapping of microplastics in a temperate salt marsh estuary, examining how the estuarine filter moderates land-to-sea microplastic transfer through vegetative trapping and particle flocculation. The study found that the sea surface microlayer captures microplastic-enriched material during tidal cycles, with salt marsh vegetation acting as a significant retention zone.

2020 Scientific Reports 86 citations
Article Tier 2

Species-specific plastic accumulation in the sediment and canopy of coastal vegetated habitats

A multi-habitat study of coastal vegetated areas in Portugal found that saltmarsh vegetation showed the strongest ability to trap macroplastics in sediment, while microplastics were distributed similarly across all habitat types. Subtidal habitats retained more microplastic fibers on their canopy than intertidal habitats, highlighting how plant structure and submersion depth influence plastic accumulation.

2020 The Science of The Total Environment 158 citations
Article Tier 2

Trapping of microplastics and other anthropogenic particles in seagrass beds: Ubiquity across a vertical and horizontal sampling gradient

Researchers examined how seagrass beds trap microplastics and other anthropogenic particles by sampling along a vegetation cover gradient from dense beds to less vegetated patches. The study found that seagrass vegetation enhances the accumulation of plastic debris in both sediment and among plant structures. Evidence indicates that seagrass ecosystems act as significant sinks for microplastic pollution, with implications for the organisms that depend on these habitats.

2024 Marine Environmental Research 12 citations
Article Tier 2

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.

2022 Environmental Science & Technology 137 citations
Article Tier 2

Distribution and retention of microplastics in plantation mangrove forest sediments

Researchers investigated the spatial distribution and retention of microplastics in sediments of plantation mangrove forests, finding that mangrove plantations act as effective sinks for microplastics transported by ocean tides, with particle size and shape influencing where plastics accumulate within the forest structure.

2022 Chemosphere 24 citations
Article Tier 2

Microplastic contamination, comparative retention efficiency, and ecological hazard in saltmarsh, mangrove, sandy, and muddy habitats along the northern Bay of Bengal coast

Researchers compared microplastic contamination across four types of coastal habitats along the Bay of Bengal, including saltmarshes, mangroves, mudflats, and sandflats. They found that saltmarshes and mangroves retained significantly more microplastics than open sandy or muddy areas, acting as natural sinks for plastic pollution. The study highlights that these ecologically important habitats bear a disproportionate burden of microplastic accumulation, which may affect the organisms that depend on them.

2025 Ocean & Coastal Management 11 citations
Article Tier 2

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.

2022 Watershed Ecology and the Environment 16 citations
Article Tier 2

A Temporal Investigation of Microplastics’ Distribution and Sediment Characteristics in Saltmarshes of the Adriatic Coast of Croatia

By analyzing sediment cores from two Croatian saltmarshes dating back to 1950, this study produced the first chronological record of microplastic accumulation in Mediterranean coastal wetlands. Microplastic concentrations rose sharply in surface layers closer to the present, with fibers dominating — likely from fishing and tourism activity. The findings confirm saltmarshes act as long-term sinks for microplastic pollution, trapping particles that may persist for decades and slowly re-enter the marine food web.

2026 Microplastics
Article Tier 2

Seagrass beds acting as a trap of microplastics - Emerging hotspot in the coastal region?

Seagrass beds in coastal waters were found to trap and accumulate microplastics at higher concentrations than surrounding unvegetated sediments, acting as effective sinks for plastic particles due to their dense canopy structure. This positions seagrass meadows as emerging hotspots of microplastic contamination in coastal ecosystems.

2019 Environmental Pollution 215 citations
Article Tier 2

Occurrence and spatial distribution of microplastics in sediments from Norderney

Researchers surveyed sediments from Norderney in the North Sea and found widespread microplastic contamination, documenting spatial distribution patterns and particle characteristics across this tidally influenced coastal environment.

2014 Environmental Pollution 608 citations
Article Tier 2

From macroplastic to microplastic: Degradation of high-density polyethylene, polypropylene, and polystyrene in a salt marsh habitat

Researchers subjected high-density polyethylene, polypropylene, and other plastics to simulated environmental degradation and tracked their fragmentation from macro- to microplastic sizes, characterizing surface changes and particle generation rates.

2016 Environmental Toxicology and Chemistry 533 citations
Systematic Review Tier 1

A critical synthesis of seagrass meadows as microplastic sinks: Current trends and research gaps

This systematic review of 84 studies finds that seagrass meadows act as natural traps for microplastics, accumulating higher concentrations in their sediments than surrounding areas. While this filtering role may protect open waters, it also means these important coastal ecosystems are bearing a disproportionate burden of plastic pollution.

2026 Springer Link (Chiba Institute of Technology)
Article Tier 2

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.

2021 Environmental Pollution 36 citations
Article Tier 2

Microplastics in Singapore’s coastal mangrove ecosystems

Researchers sampled coastal mangrove ecosystems in Singapore and found microplastics throughout, demonstrating that mangrove habitats accumulate plastic pollution and raising concerns for the organisms that depend on these ecologically important coastal forests.

2013 Marine Pollution Bulletin 977 citations