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61,005 resultsShowing papers similar to Preliminary Assessment into the Prevalence and Distribution of Microplastics in North and South Pacific Island Beaches
ClearMicroplastic contamination in Auckland (New Zealand) beach sediments
Researchers conducted the first large-scale investigation of microplastic contamination in beach sediments across 39 sites in Auckland, New Zealand, finding contamination at the majority of beaches surveyed. Mean abundance varied by coastal environment type, with estuarine and harbour sites generally showing higher concentrations than open ocean beaches.
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.
Environmental implications of microplastic pollution in the Northwestern Pacific Ocean
Researchers assessed microplastic concentrations, distribution, and characteristics across the Northwestern Pacific Ocean, finding widespread contamination with significant spatial variation and identifying environmental implications for marine ecosystems in this understudied region.
Microplastic abundance, distribution and composition in the mid-west Pacific Ocean
Researchers surveyed microplastic abundance, distribution, and composition across the mid-west Pacific Ocean, an area with previously limited data, finding widespread contamination across sampled stations. The dominant particle types were fibers and fragments, with concentrations varying by location and depth.
Abundances and characteristics of small (< 0.3 mm) and large (0.3–5 mm) microplastics found in Aotearoa New Zealand beach sediments
Researchers conducted the first study of microplastic contamination in New Zealand waters, finding that both small (under 0.3 mm) and large (0.3–5 mm) microplastics were present across beach and water samples, with fragment and fiber morphologies dominating the assemblage.
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.
Plastic pollution in Leeward, Moorea and Cook islands (South Pacific): A baseline study
Researchers conducted a baseline survey of beach macrolitter and microplastics in surface waters and sediments across six islands in French Polynesia and the Cook Islands, finding high macroplastic contamination on most beaches with densities of 18-58 items per 100 meters. Surface water microplastic concentrations were low (0-4668 particles per km), suggesting localized contamination linked to tourism and coastal activities rather than widespread oceanic inputs.
Occurrence and distribution of microplastics in the beach sediment of Anday Beach, West Papua (Indonesia)
Researchers measured microplastic occurrence and distribution in beach sediments at Anday Beach in West Papua, Indonesia, finding microplastics present across sampling sites. The findings document plastic contamination reaching a relatively remote Indonesian coastal area.
Microplastic pollution on sandy beaches of Puerto Rico
Researchers sampled sand from six northern beaches of Puerto Rico to determine microplastic abundance and composition, documenting the extent of microplastic pollution on Caribbean island coastal beaches that are considered biodiversity hotspots.
Distribution and quantity of microplastic on sandy beaches along the northern coast of Taiwan
Researchers conducted the first study of microplastic pollution on Taiwan's beaches, collecting sand from four northern coast sites and recovering 1,097 particles weighing 0.77 g in total, identifying microplastics as ubiquitous and finding a negative relationship between particle size and abundance consistent with fragmentation processes.
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.
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.
Spatial distribution of microplastics around an inhabited coral island in the Maldives, Indian Ocean
Researchers investigated microplastic accumulation across fore reef, reef flat, and beach sediment environments surrounding a small inhabited coral island in the Maldives, finding 1,244 individual microplastic pieces across 22 sampling sites. The study reveals that even remote inhabited islands in the Indian Ocean show significant microplastic contamination, with spatial distribution patterns reflecting local hydrodynamics and human activities.
Synthetic shorelines in New Zealand? Quantification and characterisation of microplastic pollution on Canterbury's coastlines
Microplastic particles were found on beaches across the Canterbury region of New Zealand, in both urban and non-urban coastal settings including exposed beaches, estuaries, and harbors. The widespread presence of microplastics even at non-urban sites confirms that plastic contamination has spread broadly along New Zealand's coastlines.
An integrated assessment of microplastic pollution in coastal surface water and sediment of Japan
Researchers conducted a comprehensive survey of microplastic pollution across 14 coastal locations around Japan from Hokkaido to Okinawa, measuring concentrations of 288.7 g/km2 in surface water and 1,185 kg/km2 in sediment and characterizing polymer types, shapes, and size distributions.
Microplastic Contamination on the Beaches of South China
Researchers surveyed microplastic contamination across 14 beaches along the South China coast, finding microplastics ubiquitously present in sandy sediments, predominantly as small fragments under 1 mm, with distribution patterns linked to coastal urbanization and ocean current dynamics.
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.
Presencia de microplásticos en cuatro playas arenosas de Perú
Microplastic fragments were found on four sandy beaches along the Peruvian coast, with the most contaminated beach having over 500 fragments per square meter. The findings document microplastic contamination in South American Pacific coastal environments where little prior data existed.
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.
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.
Abundance, composition, and distribution of microplastics larger than 20 μm in sand beaches of South Korea
A national survey of 20 sandy beaches along the South Korean coast found microplastics at all locations, with fragments as the dominant type and concentrations varying by beach exposure and proximity to population centers. The study establishes a national baseline for beach microplastic contamination to support monitoring and management policy in South Korea.
Determination of the presence of microplastics in intertidal sediments of deception island, antarctica
Researchers determined the presence and characteristics of microplastics in intertidal sediments of Deception Island, Antarctica, providing evidence that plastic contamination has reached one of Earth's most remote environments and documenting the role of marine sediments as sinks for persistent microplastic pollution.
The influence of depositional environment on the abundance of microplastic pollution on beaches in the Bristol Channel, UK
Researchers assessed the extent and variability of microplastic pollution across multiple beaches in the Bristol Channel, UK, finding that depositional environment characteristics significantly influenced the abundance and distribution of microplastic contamination in beach sand.
Abundance and characterization of microplastics on sandy beaches along the coastal area of Belize
Researchers quantified and characterized microplastic abundance on sandy beaches along the coastal zone of Belize, establishing baseline contamination data for a region of Central America and the Caribbean where such pollution assessments are critically lacking.