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61,005 resultsShowing papers similar to Sources, spatial distribution, and abundance of marine debris on Thondi coast, Palk Bay, Southeast coast of India
ClearSpatial and seasonal variation of microplastics and possible sources in the estuarine system from central west coast of India
Researchers collected samples from an estuarine system on India's west coast across two seasons, finding significant spatial and seasonal variation in microplastic abundance — with monsoon season delivering higher loads — and identifying local fishing activities and urban runoff as primary sources.
Morphometric characteristics and spatiotemporal heterogeneity of microplastics on the north-east coast of India
Survey of surface waters along the northeast coast of India found microplastics present in all sampled water masses, with higher concentrations during the monsoon season than the post-monsoon period, and fragments and fibers making up the vast majority of particles. The seasonal pattern suggests land-based runoff is a major delivery pathway, with implications for the many coastal communities in the region that depend on these waters for fishing and livelihoods.
Spatial, seasonal and ecological risk assessment of microplastics in sediment and surface water along the Thoothukudi, south Tamil Nadu, south east India
Researchers assessed the spatial and seasonal variation of microplastics in sediment and surface water along the Thoothukudi coast in southeastern India. The study found significant differences in microplastic abundance across sampling sites and seasons, with monsoon periods recording the highest concentrations, and conducted an ecological risk assessment of the contamination levels.
Marine Debris Composition and Abundance: A Case Study of Selected Coastlines in Ujong Karang, Meulaboh, West Aceh
Researchers assessed the composition, characteristics, and abundance of marine debris on two economically active coastlines in West Aceh, Indonesia, comparing a fishing-adjacent beach and a tourism beach to characterize plastic and other waste accumulation patterns in relation to coastal land use activities.
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.
Seasonal variation of microplastics in tropical mangrove waters of South-western India
Researchers measured seasonal variations in microplastic contamination within tropical mangrove waters in South-Western India. They found that post-monsoon concentrations were highest at 1.42 microplastics per liter, while monsoon season had the lowest levels at 0.19 per liter. Fibers were the most common particle type, with polymers including polypropylene, PET, and polyethylene identified, likely originating from local tourism, aquaculture, and marine industries.
Seasonal distribution and abundance of microplastics in the coastal sediments of north eastern Arabian Sea
Researchers documented seasonal variation in microplastic abundance along India's North Eastern Arabian Sea coast, finding 4,400 to 15,300 items per kilogram of dry sediment with fibers as the dominant form across ten identified polymer types.
Marine Litter and Grading of the Coastal Areas of Ambon Bay, Indonesia
Researchers assessed marine litter quantity and composition in Ambon Bay, Indonesia, finding higher debris densities in the inner bay near populated areas with plastics comprising the dominant fraction, and proposed a grading system for coastal pollution assessment.
Seasonal and spatial variations in the distribution pattern, sources and impacts of microplastics along different coastal zones of Tamil Nadu, India
Surveys of four coastal zones in Tamil Nadu, India found microplastics in both sediments and water at all sites, with the highest concentrations during the monsoon season when river runoff carries more plastic waste into the ocean. The researchers identified 16–23 different polymer types per season and found that weathered particles were carrying hazardous heavy metals on their surfaces. The study provides one of the most detailed spatiotemporal profiles of coastal microplastic contamination in India, underscoring the need for urgent pollution control measures in heavily populated coastal regions.
Microplastics in the surface seawater of Bandon Bay, Gulf of Thailand
Researchers surveyed microplastics in surface seawater of Bandon Bay, Thailand, finding the highest concentrations near fishery and aquaculture areas, with fragments as the dominant form and polyethylene and polypropylene as the most common polymer types.
Macro-, meso- and microplastic debris in the beaches of Tuticorin district, Southeast coast of India
Researchers surveyed eight sandy beaches along the Tuticorin district coast in southeast India for macro-, meso-, and microplastic debris. The study found microplastic concentrations ranging from 25 to 83 items per square meter, with contamination levels varying by site depending on the intensity of fishing and other human activities, confirming widespread plastic pollution along India's southeastern coastline.
Occurrence, characterization, and source delineation of microplastics in the coastal waters and shelf sediments of the central east coast of India, Bay of Bengal
This study characterized microplastics in surface water and shelf sediments along 1,200 km of India's east coast, finding average concentrations of 5.3 million particles per square kilometer in surface water and 209 particles per kilogram in sediments. Fibers dominated surface water while fragments dominated sediments, with riverine inputs and fishing activities identified as primary sources.
Plastic debris (> 500µm) concentration gradient detected across the Southwest Indian Ocean
Researchers investigated plastic debris concentration and composition across the Southwest Indian Ocean using 19 oceanographic campaigns and 153 uninhabited beach surveys, identifying a gradient in floating macroplastic distribution and characterizing the sources and polymer types of 101,055 litter items.
Microplastic prevalence in the beaches of Puducherry, India and its correlation with fishing and tourism/recreational activities
A survey of six beaches on India's Puducherry coast found microplastic concentrations averaging 72 particles per 100g of sediment, with a strong positive correlation between fishing activity and microplastic abundance, but no significant relationship with recreational tourism. The findings suggest that fishing-related plastic waste is a more important local source of beach microplastic contamination than tourism activities.
Estimation of microplastics in sediments at the southernmost coast of India (Kanyakumari)
This study estimated microplastic abundance in beach sediments at Kanyakumari, the southernmost tip of India, finding higher concentrations at harbors and tourist areas compared to residential fishing communities. The results indicate that both recreational activity and harbor operations are significant sources of microplastic accumulation on Indian beaches.
Comparative study on the status of microplastics in different functional areas of Tuticorin, Southeast coast of India
Researchers compared microplastic abundance, composition, and associated heavy metal contamination across different functional zones (industrial, fishing, tourism) of Tuticorin coastal waters in India, finding that spatial and seasonal factors significantly affect microplastic distribution and risk.
Amounts, Sources, Fates and Ecological Impacts of Marine Litter and Microplastics in the Western Indian Ocean Region: A Review and Recommendations for Actions
This review synthesizes 147 marine litter studies from the Western Indian Ocean region spanning 1973-2021, characterizing quantities and composition of litter across ecosystem compartments, identifying urban runoff and beachgoers as dominant sources, summarizing organism interactions with litter, and providing recommendations to address knowledge gaps and regional management needs.
Spatiotemporal distribution of microplastic debris in the surface beach sediment of the southeastern coast of bangladesh
Researchers characterized spatiotemporal distribution of microplastic debris in beach sediments along approximately 240 kilometers of Bangladesh's southeastern coastline across seven beaches, comparing monsoon and winter seasons to assess seasonal variability. The study analyzed MP abundance, polymer type, shape, size, and color to provide the first comprehensive regional baseline for this heavily populated coastal area.
Seasonal distribution of microplastics in surface waters of the Northern Indian Ocean
Researchers documented seasonal distribution of microplastics in Northern Indian Ocean surface waters across three monsoon periods, finding polyethylene and polypropylene dominated at 83%, with fibers accounting for 86% of all particles.
Deciphering the seasonal dynamics of microplastic morphotypes and associated co-contaminants along the northwest coast of India
Researchers studied seasonal variations in microplastic abundance along the northwest coast of India bordering the Arabian Sea. The study found dramatically higher microplastic concentrations during monsoon season compared to pre- and post-monsoon periods, with polypropylene and high-density polyethylene as the dominant polymer types.
Microplastics along the beaches of southeast coast of India
Microplastic debris was surveyed at 25 beach locations along 1,076 km of Tamil Nadu coastline in India, finding higher abundances at the high tide line than low tide line and higher concentrations near rivers than tourism or fishing beaches. The study provides systematic baseline data on microplastic distribution along the southeast coast of India and identifies riverine inputs as a primary delivery mechanism.
Spatiotemporal distribution of microplastic debris in the surface beach sediment of the southeastern coast of bangladesh
Researchers assessed the spatiotemporal distribution of microplastic debris in surface beach sediments along approximately 240 kilometers of the southeastern Bangladeshi coast, sampling seven beaches from Kumira to Teknaf across monsoon and winter seasons to characterize seasonal and spatial pollution patterns.
Concentration gradient of plastic debris larger than 500 μm detected across the Southwest Indian ocean
Researchers surveyed plastic pollution across 19 oceanographic campaigns in the Southwest Indian Ocean using visual surveys and manta trawls, finding a concentration gradient from near-shore areas to open ocean with over 70% of litter being plastic and offshore accumulation zones influenced by ocean circulation.
Short-term Observation on Marine Debris at Coastal Areas of Takalar District and Makassar City, South Sulawesi-indonesia
Researchers surveyed marine debris on coastal areas in Takalar District, Indonesia, finding plastic as the dominant material type. Short-term monitoring of beach litter provides baseline data for understanding local plastic inputs to the ocean.