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61,005 resultsShowing papers similar to Vertical distribution of microplastics in mangrove sediment in a tropical estuarine region.
ClearVertical distribution of microplastics in mangrove sediment in a tropical estuarine region.
Researchers characterized vertical microplastic distribution in sediment cores from mangrove fringe sites in the Piraque-Acu and Piraque-Mirim estuary in eastern Brazil, finding concentrations ranging from 80 to 960 items per kg dry weight using a saline flotation and vacuum filtration protocol.
Depth Profiles of Microplastic in Sediment Cores in the Mangrove Area of Kuala Gula Mangrove, Malaysia
Researchers profiled microplastic abundance with depth in sediment cores from the Kuala Gula Mangrove in Malaysia, finding 25-130 items per kg dry weight and highest concentrations near rivermouth sites, demonstrating that mangrove sediments are significant microplastic sinks.
Spatial distribution of microplastics in the superficial sediment of a mangrove in Southeast Brazil: A comparison between fringe and basin
Microplastic distribution was compared between fringe and basin mangrove zones in southeastern Brazil, finding that basin forests trapped significantly more microplastics than fringe areas due to lower hydrodynamic energy and greater sediment retention.
Widespread microplastic pollution in mangrove soils of Todos os Santos Bay, northern Brazil
Researchers found widespread microplastic pollution in mangrove soils around Todos os Santos Bay in Brazil, detecting contamination at multiple depths and distances from the tidal area, highlighting mangroves as previously overlooked sinks for microplastic accumulation.
Contamination of microplastics in mangrove sediment cores from Lach Huyen area, Hai Phong city, Vietnam
Microplastic concentrations in sediment cores from mangrove forests near a major Vietnamese port averaged over 1,300 particles per kilogram — substantially higher than comparable regions globally — with fibres comprising 80% of particles and concentrations decreasing with sediment depth, suggesting recent intensification of pollution. Mangrove sediments act as long-term plastic sinks, and the high fibre burden raises concern for the benthic organisms and communities that depend on these critical coastal ecosystems.
Vertical distribution, accumulation, and characteristics of microplastics in mangrove sediment in China
Sediment cores up to 100 cm deep were collected from six mangrove forests in China to document the vertical distribution and historical record of microplastic accumulation. The Futian mangrove in Shenzhen had the highest microplastic abundance up to 3,123 particles per kilogram, and the earliest plastic-bearing sediment layers date back to China's plastic industry development in the 1980s.
Spatial and vertical distribution of microplastics in mangrove sediment in the southern Philippines
This study mapped microplastic contamination in the sediments of three mangrove forests in Mindanao, Philippines, finding particles at all sites with counts ranging from 83 to 2,250 items per kilogram depending on location. Fragment shapes dominated near one river mouth while fibers dominated at a coastal site, and polypropylene was the most common polymer overall. Microplastic levels and types appeared linked to local economic activity, fishing, and waste management practices. The findings provide baseline data for protecting these ecologically important coastal ecosystems.
Microplastic contamination in the mangroves of Piraquê-Açu and Piraquê-Mirim rivers, Aracruz (Brazil): An analysis in sediment, water, and biota
Researchers found widespread microplastic contamination in a Brazilian mangrove ecosystem, detecting over 7,800 particles across water, sediment, and two species of shellfish consumed by local communities. Oysters contained higher microplastic levels than mussels, and sediments served as the main collection point for the particles. Since these shellfish are an important food source, the contamination represents a direct pathway for human microplastic ingestion.
Abundance and distribution of microplastics in tropical estuarine mangrove areas around Penang, Malaysia
This study documented microplastic pollution in tropical mangrove estuaries around Penang, Malaysia, finding thousands of plastic particles in both water and sediment samples. Concentrations were particularly high near the more urbanized Seberang Perai area, where sediment contained up to 4,000 particles per kilogram. The research highlights that tropical mangroves, which serve as important nursery habitats for marine life, are accumulating significant amounts of microplastic pollution.
Microplastics in mangrove and beach sediments on southeast Florida barrier islands
Researchers quantified and characterized microplastic abundance, distribution, and variation in estuarine mangrove and beach sediments across southeast Florida barrier islands. The study aimed to improve understanding of microplastic hazards in these coastal ecosystems to support conservation efforts for mangrove and beach environments.
Abundance and characteristics of microplastics in the mangrove sediment of the semi-enclosed Maowei Sea of the south China sea: New implications for location, rhizosphere, and sediment compositions
Microplastics were widespread in mangrove sediments of the semi-enclosed Maowei Sea in southern China, with concentrations influenced by location within the mangrove, proximity to roots, and sediment composition. The study provides new insight into how mangrove ecosystems trap and accumulate microplastics, raising concerns for the health of these ecologically important coastal habitats.
Microplastic in the sediments of a highly eutrophic tropical estuary
Researchers quantified and characterized microplastics in sublittoral sediments of Guanabara Bay, a highly eutrophic tropical estuary in Brazil, finding widespread contamination with fibers and fragments at concentrations reflecting the bay's heavy urbanization and poor waste management.
Comprehensive risk assessment of microplastics in tidal channel sediments in amazonian mangroves (northern Brazil)
Researchers assessed microplastic pollution in mangrove sediments along an estuary in the Brazilian Amazon, finding contamination at all nine sampling sites with an average of 433 particles per kilogram. While the contamination was classified as low-level, the presence of microplastics in this remote Amazonian ecosystem shows the global reach of plastic pollution. Mangroves are critical nursery habitats for fish and shellfish, so contamination here could affect seafood safety for local communities.
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.
Microplastics in mangrove sediments in environmental protection areas of the south coast of Pernambuco, Brazil
Researchers assessed microplastic contamination in mangrove sediments within two protected estuaries on Brazil's northeast coast, finding that the estuary with low sewage coverage harbored up to 800 particles per kilogram of sediment. Critically, standard abundance counts understated the real hazard—sites with PVC and polyurethane particles were rated 'very high risk' based on polymer toxicity, showing that what plastic is present matters as much as how much.
Depth Profiles of Microplastics in Sediment Cores from Two Mangrove Forests in Northern Vietnam
Microplastic contamination in sediment cores from two mangrove forests in northern Vietnam was analyzed by depth, finding concentrations ranging from 0 to 49 items per kg and providing a historical record of plastic pollution accumulation in these ecologically important coastal wetlands.
Are mangrove ecosystems plastic accumulation zones?
Researchers monitored macroplastic and microplastic pollution across nine mangrove sites on Cebu Island, Philippines, for over a year using paired removal and reference plots, finding that mangrove ecosystems function as significant plastic accumulation zones with differing dynamics between landward and seaward zones.
Evidence of elevated microplastic accumulation in Pacific Island mangrove sediments
Researchers found that mangrove sediments in Fiji contained nearly ten times more microplastics than surrounding non-mangrove areas, with consistent results across both urban and rural sites. Fibers were the most common type of microplastic found, and the contamination levels were comparable to heavily polluted regions elsewhere in the world. The study highlights that mangroves, while vital coastal ecosystems, may be acting as significant traps for microplastic pollution in Pacific Island nations.
Distribution of microplastics in the tidal flats of La Parguera, Puerto Rico
Researchers studied the distribution of microplastics in tidal flat sediments behind mangrove forests at four sites in southwest Puerto Rico. They found an average of about 149 microplastic particles per kilogram of sediment, with abundance increasing at greater distances from mangrove trees. The study suggests that mangrove density and local human activity levels influence how microplastics accumulate in these critical coastal ecosystems.
How mangrove plants affect microplastic distribution in sediments of coastal wetlands: Case study in Shenzhen Bay, South China
The effect of different mangrove plant species on microplastic distribution in coastal wetland sediments was investigated, finding that plant species significantly influenced where microplastics accumulated. The study suggests that mangrove root and canopy structures create preferential zones for microplastic retention in coastal sediments.
Composition and spatial distribution of floating plastic debris along the estuarine ecocline of a subtropical coastal lagoon in the Western Atlantic
Researchers found microplastic densities of 7.32 particles per square meter in a subtropical Brazilian coastal lagoon, with plastic filaments — primarily polyester, polypropylene, and polyethylene — being the most abundant type, concentrated near the access channel.
ACCUMULATION OF MICROPLASTICS (<300 µM) IN MANGROVE SEDIMENTS OF BANDA ACEH CITY, INDONESIA
Researchers measured microplastic accumulation in mangrove sediments in Banda Aceh, Indonesia, finding up to 3,840 particles per kilogram of sediment — with plastic pellets and fibers smaller than 300 micrometers being the most common types — suggesting these coastal ecosystems are acting as significant traps for plastic pollution from nearby land and waterways.
Characteristics and distribution of microplastics in the coastal mangrove sediments of China
A survey of mangrove sediments along China's coast found microplastics were ubiquitous, with concentrations and polymer types varying by proximity to human activity and hydrological conditions. The study shows that mangrove forests, which provide critical coastal ecosystem services, are accumulating significant quantities of plastic pollution.
Assessment of secondary microplastics trapped in mangrove ecosystem of a highly populated tropical megacity, India
Researchers quantified microplastic contamination in Mumbai's mangrove ecosystem across six zones and 30 sampling sites. They found an average of 6,730 microplastic particles per kilogram of dry sediment, dominated by fibers and polyethylene, with concentrations decreasing at greater sediment depths, highlighting the need for management policies to protect coastal environments.