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Seasonal heterogeneity and a link to precipitation in the release of microplastic during COVID-19 outbreak from the Greater Jakarta area to Jakarta Bay, Indonesia
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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.
To reduce microplastic contamination in the environment, we need to better understand its sources and transit, especially from land to sea. This study examines microplastic contamination in Jakarta's nine river outlets. Microplastics were found in all sampling intervals and areas, ranging from 4.29 to 23.49 particles m. The trend of microplastic contamination tends to increase as the anthropogenic activity towards Jakarta Bay from the eastern side of the bay. Our study found a link between rainfall and the abundance of microplastic particles in all river outlets studied. This investigation found polyethylene, polystyrene, and polypropylene in large proportion due to their widespread use in normal daily life and industrial applications. Our research observed an increase in microplastic fibers made of polypropylene over time. We suspect a relationship between COVID-19 PPE waste and microplastic shift in our study area. More research is needed to establish how and where microplastics enter rivers.
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Major sources and monthly variations in the release of land-derived marine debris from the Greater Jakarta area, Indonesia
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This study tracked monthly variations in marine debris discharged from the Greater Jakarta area in Indonesia, identifying land-based sources including rivers and coastal communities as major contributors. Peak discharge events correlated with rainfall patterns, highlighting the importance of monsoon-season waste management in reducing ocean plastic pollution.
Microplastic pollution in the coastal water of Jakarta Bay, Indonesia
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This study investigated microplastic pollution in Jakarta Bay coastal waters during the COVID-19 pandemic period, when single-use plastic use increased. Microplastics were detected at all three sampling sites, with fibers and fragments dominant, highlighting the bay as a significant sink for plastics from 13 inflowing rivers.
The contribution of estuaries to the abundance of microplastics in Jakarta Bay, Indonesia
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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.
Microplastic abundance and distribution in surface water and sediment collected from the coastal area
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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.
Microplastic contamination on urban river under different precipitation rate and land use gradient
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Researchers sampled water, sediment, and fish across nine sites in a Javanese urban stream through wet and dry seasons, finding that microplastic abundance in water was higher during dry conditions when developed land use concentrated runoff, while seasonal flushing during the wet season obscured these land-use patterns and fish accumulation depended more on species behavior than pollution levels.
Research digests by email
When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.