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61,005 resultsShowing papers similar to Major sources and monthly variations in the release of land-derived marine debris from the Greater Jakarta area, Indonesia
ClearSeasonal heterogeneity and a link to precipitation in the release of microplastic during COVID-19 outbreak from the Greater Jakarta area to Jakarta Bay, Indonesia
Researchers found microplastics in all nine river outlets flowing into Jakarta Bay, with concentrations linked to rainfall intensity and higher near the eastern bay where human activity is greater, highlighting storm runoff as a key pathway for land-based plastic pollution reaching the ocean.
The contribution of estuaries to the abundance of microplastics in Jakarta Bay, Indonesia
Researchers found that rivers draining into Jakarta Bay are a major source of microplastics, with polyethylene fragments in the 300-500 micrometer size range dominating, and that spatial variation in abundance across nine estuaries reflects differences in local land use and waste management.
Physical Control on Marine Debris Spreading around Muara Gembong, Jakarta Bay
Researchers used numerical modelling combined with artificial debris pathway analysis to investigate how marine debris from the Citarum River disperses around Muara Gembong in Jakarta Bay, finding that debris trajectory patterns differ substantially between the northwest and southeast monsoon seasons due to varying ocean currents, tides, and wind patterns.
The impact of improper solid waste management to plastic pollution in Indonesian coast and marine environment
Indonesia's plastic pollution problem in coastal and marine environments is largely driven by improper solid waste management on land, with rivers carrying significant plastic loads to the sea. The study emphasizes that improving terrestrial waste collection and disposal infrastructure is essential for reducing Indonesia's substantial contribution to ocean plastic pollution.
Variations of Marine Debris In Manado Bay and its environs
Surveys of marine debris in Manado Bay and surrounding waters in Indonesia documented the types, sources, and seasonal variation in debris accumulation. Plastic items dominated the debris, originating from land-based sources via rivers and drainage channels. The study provides baseline data for evaluating the effectiveness of government initiatives to reduce marine debris in the region.
Marine macro debris transport based on hydrodynamic model before and after reclamation in Jakarta Bay, Indonesia
This hydrodynamic modeling study predicted how marine debris would move in Jakarta Bay before and after planned land reclamation, finding that the new island configuration would alter debris transport patterns. The study is relevant to understanding how coastal development affects the distribution of plastic waste.
Microplastic abundance and distribution in surface water and sediment collected from the coastal area
Researchers found microplastics in both surface water and sediments across 12 coastal sampling sites in Jakarta Bay, Indonesia, documenting their abundance, distribution patterns, and morphological characteristics in a heavily urbanized tropical coastal environment.
Kepadatan dan pola transport sampah laut terapung di pesisir barat perairan Teluk Ambon Luar
This Indonesian study measured the density and transport patterns of floating marine litter on the western coast of Outer Ambon Bay, finding high volumes of plastic debris with clear spatial patterns driven by currents and tides. The data can inform placement of debris interception systems in this Indonesian coastal city.
Karakteristik sampah mikroplastik di Muara Sungai DKI Jakarta
This Indonesian-language study characterized microplastics found at the mouths of rivers flowing through Jakarta. River mouths are major hotspots for plastic accumulation, as they collect debris washed from urban areas and funnel it toward coastal and marine environments.
Estimation of bottom microplastic flux in the Indonesian seas
Using ocean circulation models and Lagrangian particle tracking, researchers estimated microplastic flux to the seafloor from 68 Indonesian rivers, finding that accumulation concentrates within 50-100 km of major islands. The Karimata Strait, Java Sea, and South Java were identified as the primary accumulation zones within Indonesia's Fisheries Management Areas.
Microplastics Patch Based on HydrodynamicModeling in The North Indramayu, Java Sea
Hydrodynamic modeling was used to track microplastic transport in the Java Sea off North Indramayu, Indonesia, predicting accumulation zones influenced by tidal currents and seasonal winds. The study provides a modeling framework for understanding microplastic distribution in Indonesian coastal waters, which receive high plastic inputs from land.
Characterization of Microplastics in Jakarta’s Urban Downstream and Estuary Water Bodies
Researchers characterized microplastic contamination in urban water bodies of Jakarta -- specifically Sunter River, Buaran River, and Marunda Estuary -- which serve as conduits for plastic waste to the ocean. Microplastics were abundant in all sampled water bodies, with fiber and fragment morphotypes dominant, reflecting the high density of urban plastic sources in the surrounding catchments.
Seasonal Variation Analysis of Microplastic Distribution in the Estuary of Brantas River
Microplastic abundance in the Brantas River estuary in Surabaya, Indonesia, varied with the seasons, rising during rainy periods when increased runoff carries more plastic debris from land into the waterway. Because Brantas River water is used for drinking water supply and irrigation, understanding seasonal peaks in microplastic loading is critical for managing exposure risks for both humans and agricultural ecosystems.
Abundance of Microplastics in Mangrove Sediments on Pari Island, Jakarta Bay, Indonesia
Researchers sampled mangrove sediments on Pari Island in Jakarta Bay in two seasons and identified microplastics by shape, color, size, and polymer type, finding that seasonal variation affected abundance and distribution. The study documents microplastic accumulation in a mangrove ecosystem adjacent to the Indonesian capital.
Time-series of shoreline marine debris highlights impact of urbanization on coastal pollution pathways, Nha Trang, Vietnam.
A time-series analysis of shoreline marine debris in Nha Trang, Vietnam, revealed that urbanization drives increased coastal plastic pollution by altering land-based discharge pathways. The study documented how shoreline debris levels fluctuated seasonally and with rainfall events, providing insights for pollution management in developing coastal cities.
Potential of Recycle Marine Debris in Pluit Emplacement, Jakarta to Achieve Sustainable Reduction of Marine Waste Generation
Researchers assessed the potential for recycling marine debris at the Pluit Emplacement in Jakarta, Indonesia's largest marine waste management site, to identify strategies for sustainable reduction of marine waste generation.
Seasonal variation in the abundance of marine plastic debris in the estuary of a subtropical macro-scale drainage basin in South China
Plastic debris was collected from 25 beaches in Hong Kong during wet and dry seasons, with significantly higher abundance in summer. The seasonal pattern was attributed to increased rainfall and runoff during summer, which flushes land-based plastic waste into coastal areas, highlighting stormwater as a key driver of beach plastic pollution.
Abundance and variation of microplastics between seasons in a tropical estuary: The case of Can Gio estuary, Vietnam
Researchers assessed seasonal variation in microplastic abundance and characteristics in the Can Gio estuary, Vietnam, across wet and dry seasons. Microplastic concentrations were higher during the wet season, with seasonal plastic transport linked to river discharge and rainfall-driven inputs from upstream urban sources.
Seasonal Variability on Microplastic Polutions In Water and Sediment of Ciliwung River
A study on Jakarta's Ciliwung River found that microplastic concentrations in both water and sediment were roughly double in the wet season compared to the dry season, with fibers predominating and polyethylene terephthalate identified by FTIR. The results demonstrate that seasonal rainfall drives microplastic transport from land into urban waterways, concentrating pollution at times when river discharge is highest — relevant to understanding how microplastics reach coastal and marine environments.
Spatial and temporal distribution of microplastic in surface water of tropical estuary: Case study in Benoa Bay, Bali, Indonesia
Seasonal sampling of microplastics in Benoa Bay, Bali found no significant wet/dry season difference, with the highest MP abundance near the Suwung landfill and fragment-shaped particles (73%) dominating, suggesting landfills and river discharge are primary local sources.
Spatial and temporal distribution of microplastics in the Belawan Estuary, Indonesia
Researchers tracked microplastic levels across different tidal cycles and lunar phases in an Indonesian estuary, finding that concentrations peaked near the coastline during high tide and full moon periods. The study shows that tidal currents and seasonal water flow patterns strongly control where microplastics accumulate, which is important for designing cleanup strategies.
How flooding rivers deliver plastic to the ocean: A case study of microplastic and mesoplastic load–discharge relationships
A field study tracked how a flooding river delivered plastic debris to the ocean, mapping the rapid transport of macroplastics and microplastics during a high-flow event. The research shows that floods are major episodic drivers of plastic export from land to sea, contributing disproportionately to ocean plastic budgets.
Modeling the fate of microplastics in the Sengkarang Estuary, Pekalongan City, Central Java, Indonesia
Researchers measured microplastic concentrations in water and sediment at the mouth of the Sengkarang River in Indonesia and built a hydrodynamic model to track how tidal currents, wind, and river flow distribute the particles. Microplastics were highest in coastal waters and mangrove sediments, with tides and currents driving horizontal transport and concentrating particles in biologically sensitive habitats. The modeling approach offers a practical framework for predicting where microplastics accumulate and informing pollution management in river-to-sea systems.
Seasonal variation in plastic litter pollution in mangroves from two remote tropical estuaries of the Colombian Pacific
Researchers found that plastic litter in two remote Colombian Pacific mangrove estuaries was dominated by microplastics, with higher abundances during high-rainfall seasons in both surface waters and sediments, and foams and fragments being the most common types.