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61,005 resultsShowing papers similar to Spatial distribution of microplastics around an inhabited coral island in the Maldives, Indian Ocean
ClearSpatial and temporal variation of macro-, meso- and microplastic abundance on a remote coral island of the Maldives, Indian Ocean
Researchers conducted daily sampling of plastic debris on a remote Maldives island over seven consecutive days and found high spatial and temporal variability in plastic abundance despite the island's remoteness, warning that single-snapshot surveys can produce biased estimates and that future monitoring programs must account for natural fluctuations in deposition.
Unveiling Microplastic Abundance and Distribution in an Oceanic Island: Offshore Depository or Local Pollution Indicator
Microplastic abundance and distribution were documented across surface waters and sediments of an oceanic island, with findings indicating both local land-based pollution and ocean gyre-driven deposition of particles from distant sources.
First detection of microplastics in reef-building corals from a Maldivian atoll
Researchers conducted the first survey of microplastic contamination in reef-building corals from a Maldivian atoll, examining 38 coral colonies across three species. They found that 58% of colonies contained microplastic particles in the 25-150 micrometer size range. The study provides initial evidence that even remote coral reef ecosystems in the Indian Ocean are affected by microplastic pollution, raising concerns about potential impacts on coral health.
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.
Distribution characteristics and transport pathways of soil microplastics in coral reef islands with different developmental stages and human activities
Researchers mapped microplastic contamination in the soil of coral reef islands in the South China Sea and found 1,068 to 1,616 particles per kilogram across islands at different stages of development. More developed islands with greater human activity had higher contamination levels, and ocean currents and monsoons were the main forces spreading microplastics to less developed islands. The study shows that even remote island ecosystems are not safe from microplastic pollution, which can affect the soil and water these communities depend on.
Unraveling the invisible threat of microplastics to Lakshadweep Coral Atolls, Indian Ocean: Multifaceted ecological risk and pollution profiling
Microplastic contamination in the waters around the Lakshadweep Islands (a remote Indian Ocean archipelago) was documented for the first time. The detection of microplastics in this relatively pristine and ecologically sensitive location underscores the reach of plastic pollution across the global ocean.
Microplastics as a sedimentary component in reef systems: A case study from the Java Sea
Researchers investigated microplastic distribution in sediments from two tropical atoll reef platforms in Indonesia. The study found that microplastics are a component of reef sediments, with distribution patterns influenced by reef geomorphology and hydrodynamic processes, highlighting the need to better understand how microplastics accumulate in coral reef systems and their potential impacts on reef health.
Occurrence and characteristics of microplastics in the coral reef, sea grass and near shore habitats of Rameswaram Island, India
Researchers compared microplastic occurrence and characteristics alongside heavy metal contaminants in water and sediment across coral reef, seagrass, and nearshore habitats of Rameswaram Island, India, finding mean concentrations ranging from 24 to 96 items/L and identifying habitat-specific differences in contamination profiles.
Distribution and biological implications of plastic pollution on the fringing reef of Mo’orea, French Polynesia
This study quantified both macro- and microplastic pollution on the coral reef of Mo'orea in French Polynesia, finding plastic at every sampled beach and in reef sediments. The research demonstrates that even remote Pacific island coral reefs receive significant plastic contamination from oceanic gyres and local sources.
Microplastics in remote coral reef environments of the Xisha Islands in the South China Sea: Source, accumulation and potential risk
Scientists mapped microplastic contamination across 13 islands in the remote Xisha Islands of the South China Sea and found an average of 682 particles per kilogram of sediment. The study identified local sewage, fishing waste, and industrial runoff from nearby countries as the main sources. This shows that even remote coral reef ecosystems far from population centers are not safe from microplastic pollution.
Microplastics in coral from three Mascarene Islands, Western Indian Ocean
Researchers compared microplastic concentrations, morphotypes, sizes, colors, and polymer compositions across six coral genera from three remote Mascarene Islands in the western Indian Ocean over a 1200 km transect. Microplastics were detected in all coral genera across all islands, with polymer types and concentrations reflecting both local and long-range ocean transport of plastic debris.
Distribution, characteristics and short-term variability of microplastics in beach sediment of Fernando de Noronha Archipelago, Brazil
Researchers conducted daily beach sediment sampling on Fernando de Noronha Archipelago in Brazil, documenting large spatial and temporal variability in microplastic concentrations (0.6-1,059 particles/m) and finding that remote island beaches are not protected from microplastic contamination.
Unveiling the hidden threat of microplastics to coral reefs in remote South Atlantic islands
Researchers investigated microplastic contamination of coral reefs on remote South Atlantic islands, finding widespread microplastic presence in reef environments and raising concerns about the physiological and ecological harm to coral ecosystems far from human population centers.
The presence of microplastics in fishes of South Maldives
Researchers found microplastics in the gut, gills, and flesh of two fish species collected from South Maldives, with 80% of one species containing plastic particles, indicating widespread ingestion by reef fish in this remote island nation and potential transfer into the human food chain.
Abundance, distribution and correlation of microplastics in Tuapejat coastal water Mentawai Islands Indonesia
Researchers found microplastics — primarily fibers, fragments, and films — in both water and sediment samples from coastal waters of the Mentawai Islands, Indonesia, with the highest concentrations linked to anthropogenic activities in this marine tourism hub.
Preliminary Assessment into the Prevalence and Distribution of Microplastics in North and South Pacific Island Beaches
Researchers conducted a preliminary investigation into microplastic prevalence on eight beaches across North and South Pacific Island locations in New Zealand and Hawaii, analyzing contamination as a function of beach location, sand type, and microplastic morphology. The study found microplastics at all eight sites, highlighting the widespread distribution of plastic pollution across remote Pacific Island shorelines.
A baseline study of meso and microplastic predominance in pristine beach sediment of the Indian tropical island ecosystem
Researchers conducted a baseline survey of meso- and microplastic contamination on beaches of the Andaman and Nicobar Islands in India, finding plastic debris present even in these relatively remote tropical island ecosystems, with fragments and films being the most common types.
Linking the Tourism Activity to the Occurrence and Distribution of Microplastics
Researchers assessed microplastic abundance, type, and spatial distribution in coastal water, sediments, and fish across three zones of Gili Trawangan, Indonesia, finding that tourism-related activities concentrated microplastics at recreational beaches with concentrations reaching 19.25 particles/L.
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.
Zonal Distribution Characteristics of Microplastics in the Southern Indian Ocean and the Influence of Ocean Current
Microplastic concentrations were measured in seawater across the southern Indian Ocean along transects influenced by major ocean currents, finding that plastic distribution was shaped by circulation patterns with higher concentrations in convergence zones. The study provides baseline data on microplastic pollution in a relatively understudied and remote ocean region.
A temporal assessment of microplastics distribution on the beaches of three remote islands of the Yasawa archipelago, Fiji
Researchers conducted a three-year temporal study of microplastics on beaches of the Yasawa Islands, Fiji, finding average concentrations of 4.5 MPs/m2 with significantly higher levels on east-facing storm-line beaches, with polypropylene and polystyrene as the most common polymer types.
Microplastic pollution on island beaches, Oahu, Hawai`i
Researchers surveyed microplastic densities on six windward beaches of Oahu, Hawaii, finding very high concentrations of 700-1,700 particles/m2 on high-wave-energy beaches with coarser sands, comparable to other remote island beaches globally.
Macrodebris and microplastic distribution in the beaches of Rameswaram Coral Island, Gulf of Mannar, Southeast coast of India: A first report
Researchers conducted the first survey of plastic debris in sediments from Rameswaram coral island in India's Gulf of Mannar, finding white irregular-shaped fragments dominated by polypropylene and polyethylene, with tourism and fishing identified as primary sources and wind-driven aeolian transport controlling spatial distribution.
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.