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61,005 resultsShowing papers similar to Abundance and Characteristics of Microplastics in Seawater and Corals From Reef Region of Sanya Bay, China
ClearDistribution characteristics of microplastics in Zhubi Reef from South China Sea
Microplastic abundance and distribution were measured at Zhubi Reef in the South China Sea, finding concentrations of 1,400–8,100 items/m² of surface water—much higher than other ocean areas—with fibers, pellets, polypropylene, and polyamide as dominant types. The study documents elevated microplastic contamination at a South China Sea reef ecosystem under increasing human pressure.
Species-specific microplastic enrichment characteristics of scleractinian corals from reef environment: Insights from an in-situ study at the Xisha Islands
Microplastics were detected in seawater, sediment, and three scleractinian coral species at five atolls in the Xisha Islands, with average seawater concentrations of 9.5 particles per liter and species-specific differences in microplastic enrichment patterns observed.
Assessment of microplastic pollution in corals, seawater, and marine sediments in the Gulf of Thailand
Researchers assessed microplastic occurrence, abundance, and characteristics in coral, seawater, and sediment samples from two reef sites in the Gulf of Thailand, detecting microplastics in all coral samples at concentrations ranging from 0.24 to 2.60 particles per gram and finding spatial variability across reef species and sites.
Microplastic pollution in tropical coral reef ecosystems from the coastal South China Sea and their impacts on corals in situ
Researchers studied microplastic contamination in coral reef ecosystems off southern China, finding plastic particles in seawater, sediment, corals, shellfish, and fish. Different coral species absorbed microplastics at different rates, with smaller particles penetrating deeper into coral tissue. Since coral reefs support fisheries and coastal communities, this contamination could affect both marine ecosystems and the seafood that people eat.
Impacts of microplastics on scleractinian corals nearshore Liuqiu Island southwestern Taiwan
Researchers found microplastics in three genera of wild corals near Liuqiu Island, Taiwan, with abundances up to 0.95 items per gram dominated by blue rayon fibers, and observed that low coral cover (12.5%) at the most tourism-impacted site corresponded with the highest microplastic concentrations in water, sediment, and coral tissue. Enrichment factors of 25-283 times above surrounding seawater indicate corals are significant accumulators of microplastics in reef environments.
Contamination of microplastics in tropical coral reef ecosystems of Sri Lanka
Researchers investigated microplastic contamination across ten coral reef ecosystems in Sri Lanka, finding microplastics in corals, water, and sediments with fibers and fragments being the dominant types, representing a previously unquantified threat to tropical reef systems.
Abundance and Characteristics of Microplastics in Coral Reefs at Penimbangan Waters
Researchers assessed microplastic abundance and characteristics in coral reef tissues and sediments at Penimbangan Beach, finding MPs in all 12 coral samples analyzed. Fiber and fragment types dominated, with polymers matching common fishing and packaging materials, reflecting local pollution inputs to the reef ecosystem.
Microplastics in the Coral Reef Systems from Xisha Islands of South China Sea
Researchers surveyed microplastic distribution in seawater, fish, and corals across three atolls in the Xisha Islands of the South China Sea. They found microplastics present in all sample types, with lagoons showing the highest water concentrations and fibrous rayon and polyethylene being the dominant polymer types. The findings indicate that even relatively remote coral reef systems are contaminated with microplastics, which may threaten reef health.
Spatial distribution characteristics of microplastics in the seawater column and sediments of the artificial reef area and adjacent water in Haizhou Bay
Researchers measured microplastic abundance and distribution in seawater and bottom sediments across aquaculture, artificial reef, and adjacent areas of Haizhou Bay, China, finding that mean abundances in seawater were 7-10 particles per cubic meter and varied with water depth. Microplastic distribution was influenced by hydrodynamic conditions and the proximity to aquaculture and reef structures.
Quantitative and qualitative determination of microplastics in oyster, seawater and sediment from the coastal areas in Zhuhai, China
Researchers quantified microplastics in oysters, seawater, and sediment along the Zhuhai coastline, finding 0.14–7.90 items/g in oyster soft tissue, 10–27.5 items/L in seawater, and 0.053–0.26 items/g in sediment, with polyethylene fibers as the dominant type across all matrices.
The spatial distribution of microplastic in the sands of a coral reef island in the South China Sea: Comparisons of the fringing reef and atoll
Microplastic abundance in coral reef island sands of the South China Sea was measured at fringing reef sites (90–530 items/kg) and atoll sites (60–610 items/kg), with the lower-human-activity Xisha Islands atoll showing higher concentrations attributed to oceanic current accumulation. The study reveals that even remote coral reef ecosystems are contaminated with microplastics and that oceanographic factors can outweigh local human activity.
Occurrence and Composition of Microplastics in the Seabed Sediments of the Coral Communities in Proximity of a Metropolitan Area
Benthic sediment samples from four sites adjacent to coral communities in Hong Kong were analyzed for microplastics, finding concentrations of 169–221 items/kg with polyethylene and polypropylene fragments dominant. The study documents significant microplastic contamination in sediments surrounding coral communities in a heavily urbanized coastal city.
Composition and distribution of microplastics in the surface seawater of Xisha Islands
Researchers surveyed microplastics in surface seawater at 30 stations around the Xisha Islands coral reef area in China, finding a mean abundance of 54.7 pieces per cubic meter with sizes predominantly in the 1-3 mm range. Transparent (56.8%) and blue (40.2%) particles dominated colorimetrically, and the study established a baseline for microplastic pollution in this oligotrophic oceanic region.
Differential enrichment and physiological impacts of ingested microplastics in scleractinian corals in situ
Researchers found microplastics in scleractinian corals along the east coast of Hainan Island in the South China Sea, with average concentrations of 4.97 particles per square centimetre in coral tissue, alongside contamination in Tridacnidae, Trochidae, and fish intestines. The characteristics of microplastics in organisms differed from those in surrounding seawater and sediment, indicating selective enrichment during ingestion.
Distribution and characteristics of microplastics in the tidal flats of Sanya Bay, China
Microplastic distribution was characterized at 10 sampling sites in the tidal flats of Sanya Bay, finding widespread contamination with polyethylene and polypropylene fragments as the dominant types. The study provides baseline data for assessing microplastic risks to intertidal marine organisms in a tropical bay ecosystem.
Deposition characteristics of microplastics in coral reef fish with different feeding habits from the Xisha Islands Waters, South China Sea
Researchers examined microplastic contamination in the gills and gastrointestinal tracts of 96 coral reef fish from the South China Sea, finding that nearly 98% of sampled fish contained microplastics. Fibers were the most common shape, with most particles smaller than 1 mm, and the predominant polymers were PET, PE, and PP. The study found that herbivorous fish had higher microplastic content than omnivorous or carnivorous species, likely because they feed primarily on microplastic-polluted coral reefs.
Microplastic prevalence in marine fish from onshore Beibu Gulf, South China Sea
Researchers examined 271 fish across 32 species from the Beibu Gulf and found microplastics in the majority of samples, with fibers being the most common type and abundance varying by species, feeding habits, and habitat.
Microplastic Pollution and Its Potential Correlation with Environmental Factors in Daya Bay, South China Sea
Researchers surveyed 26 sites in Daya Bay, China, finding microplastics in both surface water (up to ~14 items/L) and sediment (up to ~823 items/kg), with fibers and PET the dominant types. The study also identified correlations between microplastic abundance and environmental factors, highlighting how coastal waters near urbanized areas accumulate significant plastic contamination that threatens marine life.
Microplastic pollution in surface seawater of Sanggou Bay, China: Occurrence, source and inventory
Researchers surveyed microplastic pollution in the surface seawater of Sanggou Bay, China, finding average abundances of 20.06 items per litre dominated by polyethylene fragments smaller than 0.5 mm, and estimating that approximately 62.76% of the microplastic inventory originated from local aquaculture and fishing activities.
Abundance of microplastics and its ecological risk assessment in coral reef regions of Peninsular Malaysia
Researchers surveyed microplastic contamination in surface waters around coral reef regions of Peninsular Malaysia. They detected microplastics at all sampling sites, with the Perhentian Islands showing significantly higher levels than Tioman Island, likely due to oceanographic differences. Small fragments and fibers of polyethylene and polypropylene were the most common types found, providing baseline data on microplastic pollution in these sensitive reef ecosystems.
Microplastic pollution in North Yellow Sea, China: Observations on occurrence, distribution and identification
Researchers surveyed microplastic pollution across the North Yellow Sea, documenting their occurrence, distribution, and characteristics, and finding widespread contamination with higher concentrations in coastal areas and near river inputs.
Assessment of microplastic abundance and characteristics in the coastal water of Hai Phong, Vietnam
Researchers assessed microplastic abundance and characteristics in coastal waters of Hai Phong, Vietnam, finding concentrations of 11.1 items per cubic meter in net samples and 1,515.4 items per cubic meter in bucket samples, with fibers accounting for more than 60% of the 2,659 particles identified.
Distribution of Microplastics in Sediments of The Northern Natuna Sea
Researchers sampled sediments from eight stations in the Northern Natuna Sea and identified 258 microplastic particles ranging from 400 to 1020 pieces/kg dry weight. Fibers and fragments dominated, with transparent and black particles most common, providing baseline contamination data for this understudied region of the South China Sea.
Distribution characteristics of microplastics in the seawater and sediment: A case study in Jiaozhou Bay, China
Researchers surveyed microplastic pollution in the seawater and sediments of Jiaozhou Bay, a semi-enclosed bay in China heavily impacted by human activity. They found microplastic concentrations of 20 to 120 items per cubic meter in seawater and 7 to 25 items per kilogram in sediment, with fibers being the dominant shape and PET the most common polymer. The study found positive correlations between microplastic levels in water and sediment, and higher concentrations near areas with residual ocean currents.