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61,005 resultsShowing papers similar to Deciphering the seasonal dynamics of microplastic morphotypes and associated co-contaminants along the northwest coast of India
ClearSeasonal 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.
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.
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.
Spatial 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.
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.
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.
Seasonal microplastic variations in estuarine sediments from urban canal on the west coast of Thailand: A case study in Phuket province
Researchers investigated seasonal variations in microplastic contamination in estuarine sediments from an urban canal in Phuket, Thailand. They found microplastic abundance was higher in the dry season than the rainy season, with rayon and polyester being the most common polymer types, suggesting that seasonal hydrological patterns and human activities both influence microplastic distribution in urban estuaries.
Insights into the seasonal distribution of microplastics and their associated biofilms in the water column of two tropical estuaries
Researchers tracked microplastic levels and the bacterial communities growing on them in a tropical estuary in southwest India across wet and dry seasons. Microplastic concentrations were about seven times higher during the wet season due to increased runoff, and the biofilms on these plastics included potentially harmful bacteria. The study shows that seasonal weather patterns influence how much microplastic contamination reaches coastal waters where local communities fish and collect seafood.
Characteristics, seasonal distribution and surface degradation features of microplastic pellets along the Goa coast, India
Researchers characterized microplastic pellets on six beaches in Goa, India, across seasons and found that pellets arriving during the southwest monsoon were chemically fresh (newly produced polyethylene and polypropylene), while January samples showed aging and weathering, pointing to ocean-based sources and monsoon-driven currents as the primary delivery mechanism.
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.
Influence of seasonal variations on the distribution characteristics of microplastics in the surface water of the Inner Gulf of Thailand
Researchers sampled surface water across 70-74 sites in the Inner Gulf of Thailand in both dry and wet seasons, finding microplastic concentrations 4 times higher in the wet season (34.59 pieces/L) than the dry season (8.70 pieces/L). River discharge was identified as the key driver of microplastic input to the coastal sea, and polypropylene and polyethylene were the dominant polymers.
Impact of seasonal variations on microplastic accumulation and characteristics in sandy beaches of Sichang Island, the inner Gulf of Thailand
Researchers measured microplastic abundance in beach sediments on Sichang Island in the Gulf of Thailand across dry and wet seasons, finding that seasonal monsoon winds and currents strongly affected where plastics accumulated — increasing contamination on exposed windward beaches and reducing it on sheltered leeward ones. Polypropylene was the most common polymer found, and smaller microplastic particles became less abundant after the wet season, possibly dispersed further by wave action. The work highlights how local geography and seasonal weather patterns shape where microplastics concentrate along coastlines.
Preliminary Study on Abundance of Microplastic in Sediments and Water Samples Along the Coast of Pakistan (Sindh and Balochistan)-Northern Arabian Sea
Researchers found high levels of microplastic contamination along 25 locations on Pakistan's Arabian Sea coastline, with mean concentrations of 582 particles/L in seawater and 987 particles/kg in sediment, and fibers comprising up to 99% of all detected microplastics.
Pelagic microplastics in surface water of the Eastern Indian Ocean during monsoon transition period: Abundance, distribution, and characteristics
Pelagic microplastic concentrations were measured in surface water of the eastern Indian Ocean at 36 stations during monsoon and non-monsoon seasons. The study found spatial variation linked to ocean circulation patterns, expanding knowledge of open-ocean microplastic distribution in one of the least-studied major ocean regions.
Seasonal variations in the abundance and distribution of microplastic particles in the surface waters of a Southern Indian Lake
Researchers documented seasonal variations in microplastic abundance in a southern Indian lake, finding higher concentrations during monsoon season due to stormwater runoff, with fibers and fragments as the dominant particle types linked to nearby urban and agricultural activities.
Type and Distribution of Microplastics in Beach Sediment along the Coast of the Eastern Gulf of Thailand
Researchers examined microplastic distribution in beach sediments along the eastern Gulf of Thailand across two monsoon seasons, finding up to 1,698 pieces/m2 at the most contaminated site with PET (39.6%) and polyamide (22.8%) as the dominant polymer types among 17 identified.
Seasonal variation, polymer hazard risk and controlling factors of microplastics in beach sediments along the southeast coast of India
Researchers investigated microplastic contamination at six beaches along India's southeast coast, comparing seasonal variation and hazard risk. They found that polyethylene and polypropylene fibers were the most common types, likely originating from fishing, textile, and urban activities. Although overall contamination levels were low, the presence of hazardous polymers like PVC and polystyrene contributed to a very high ecological risk index for marine life.
Source Apportionment of Marine Microplastics: First Step Towards Managing Microplastic Pollution
Monthly beach sediment sampling in India identified the sources of microplastics deposited on the coast, finding higher plastic loads during monsoon seasons. Identifying specific pollution sources is essential for targeting interventions to reduce microplastic input to marine environments.
The seasonal cycle of micro and meso-plastics in surface waters in a coastal environment (Ría de Vigo, NW Spain)
Researchers tracked micro- and mesoplastics in a coastal bay in northwestern Spain over a full year, finding plastic pollution in all seasons. Concentration varied with weather and oceanographic conditions, highlighting the dynamic nature of coastal plastic contamination.
Assessment of micro and macroplastics along the west coast of India: Abundance, distribution, polymer type and toxicity.
This study assessed the abundance and types of micro- and macroplastics on ten beaches along India's west coast, finding plastic in all locations with fragments being the most common form. Polymer analysis revealed polypropylene, polyethylene, and polystyrene as the dominant types, and toxicity testing indicated the plastic-contaminated sediments posed ecological risks.
Temporal and Spatial Distribution of Microplastics in a Coastal Region of the Pearl River Estuary, China
Researchers found that microplastic abundance in the Pearl River Estuary coastal region was 1.85-fold higher during the rainy season than the dry season, with concentrations decreasing from river to estuary to open sea. Fibers and fragments dominated, with gray, white, and green particles most common across sampling sites.
Distribution and characterization of microplastics in beach sand from three different Indian coastal environments
Beach sands from three locations on the Indian coast were analyzed for microplastics, finding concentrations of 45–220 particles/kg dry sand with polyethylene (43%) as the dominant polymer, followed by PET and polystyrene. The study establishes baseline contamination data for Indian beaches and demonstrates consistent polymer profiles across geographically distinct coastal environments.
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.
Spatiotemporal characterisation of microplastics in the coastal regions of Singapore
Researchers characterized the spatiotemporal distribution of microplastics along Singapore's coastal waters, finding fragments as the dominant type at 70%, with higher concentrations at the surface and polymer compositions including polyethylene and polypropylene.