Dynamic distribution of microplastics in mangrove sediments in Beibu Gulf, South China: Implications of tidal current velocity and tidal range

Zhang, Linlin; Zhang, Shuaipeng; Guo, Jing; Yu, Kefu; Wang, Yinghui; Li, Ruilong

doi:10.1016/j.jhazmat.2020.122849

Cited by 83 publications

(18 citation statements)

References 59 publications

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“…Tibbetts et al [42] reported much higher average MP concentrations (90 MPs/kg) in the rural areas of the River Tame in the United Kingdom but comparably high MP levels (240 MPs/kg) in the urban areas. Nor and Obbard [25] reported averages of 12 to 63 MPs/kg in mangroves of Singapore while Zhang et al [59] reported MP averages ranging from 273 to 3520 MPs/kg in mangroves further away from the city and mangroves closer to industrial/urban zones, respectively, in China. Based on these and other recent reports (e.g., [28,30,60]), South African mangroves can, therefore, be considered moderately (e.g., St. Lucia) to highly (e.g., Isipingo) polluted by MPs compared with other parts of the world.…”

Section: Abundance Of Microplastics In Mangrove Sedimentmentioning

confidence: 99%

Towards Characterising Microplastic Abundance, Typology and Retention in Mangrove-Dominated Estuaries

Govender

Naidoo

Rajkaran

et al. 2020

Water

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Plastic and, particularly, microplastic (MP) pollution is a growing research theme, dedicated largely to marine systems. Occurring at the land–sea interface, estuarine habitats such as mangroves are at risk of plastic pollution. This study compared MP pollution (level, morphotype, polymer composition, size and colour) across four South African estuaries, in relation to the built and natural environment. Mouth status, surrounding human population densities and land-use practices influenced the level and type of MP pollution. Systems that were most at risk were predominantly open estuaries surrounded by high population densities and diverse land use types. Microplastic levels and the diversity of types detected increased with increasing levels of anthropogenic disturbance. Overall, microfibres dominated in estuarine water (69%) and mangrove sediment (51%). Polyethylene (43%) and polypropylene (23%) were the dominant polymers overall. Weathered fishing gear, weathered packaging items and run-off from urban/industrial centres are probable sources of MP pollution . Increased run-off and river input during the wet/rainy season may explain the markedly higher MP loads in estuarine waters relative to the dry season. By contrast, MP deposition in mangrove sediment was higher during the dry season. Sediment MP abundance was significantly positively correlated with both pneumatophore density and sediment size (500–2000 µm). This study highlights the role of mangroves as MP sinks, which may limit movement of MPs into adjacent environments. However, under conditions such as flooding and extreme wave action, mangroves may shift from sinks to sources of plastic pollution.

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Section: Abundance Of Microplastics In Mangrove Sedimentmentioning

confidence: 99%

Towards Characterising Microplastic Abundance, Typology and Retention in Mangrove-Dominated Estuaries

Govender

Naidoo

Rajkaran

et al. 2020

Water

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“… Martin et al (2019) indicated that the developed root system and high net primary productivity contributed significantly to the trapping of riverine plastic litter. However, some other research suggests that hydrodynamic factors primarily determine the blocking of small particles ( Zhang et al, 2020 ). This means that no definitive conclusions can be drawn about what factors had the most significant influence on intercept rates.…”

Section: Discussionmentioning

confidence: 99%

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

Cordova

Ulumuddin

Purbonegoro

et al. 2022

Marine Pollution Bulletin

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“…Letak ekosistem mangrove yang dekat dengan daratan berpotensi untuk menjebak sampah-sampah dari aktivitas manusia (Martin et al, 2019). Selain itu, ekosistem mangrove yang selalu mendapat masukan air laut melalui proses pasang surut juga berpontensi mengakumulasi mikroplastik (Zhang et al, 2020).…”

Section: Pendahuluanunclassified

Kelimpahan Mikroplastik Pada Insang Dan Saluran Pencernaan Ikan Lontok Ophiocara porocephala Valenciennes, 1837 (Chordata: Actinopterygii) di Ekosistem Mangrove Dubibir, Situbondo

et al. 2022

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Mangrove as a transitional ecosystem between land and sea is threatened with microplastic pollution. It could lead to the accumulation of microplastic in mangrove organisms, including ikan lontok (snakehead gudgeon fish-Ophiocara porocephala) as one of the seasonal fish found in mangrove ecosystem. This study aimed to analyze the occurrence of microplastic in the gills and gastrointestinal tracts of the fish caught from Dubibir mangrove ecosystem, Situbondo. The fish were caught using gillnet (17 individuals) and measured its length and body weight. Organic matter digestion was conducted using hydrogen peroxide solution (H2O2 30 % and Fe (II) 0,05 M) for 24 h. Samples were then filtered using Whatman filter paper and types of microplastic were identified using microscope (Olympus CX33). In total, 192 particles of microplastic were retrieved from both gills and gastrointestinal tracts with the domination of fibers, followed by fragments, films and beads. Microplastics abundance was observed higher in the gills than in the gastrointestinal tracts and it might be due to the different of organ functionality and the input process of microplastics into each organ. Microplastic with the size of 500 – 1000 µm dominated the result, while the size of < 300 µm were found more in the gastrointestinal tracts than in the gills. It showed that gastrointestinal tracts have less preference in the accumulation process of microplastics. Blue is the most common of microplastic color found in both of the fish organs, followed by black, red and other colors with a smaller number of particles. The results of this study show that concern over the occurrence of microplastics in the snakehead gudgeon fish is needed since the fish is also consumable for human and could influence human health. Ekosistem mangrove yang terletak diantara wilayah darat dan laut tidak luput dari pencemaran mikroplastik. Hal ini dapat mengakibatkan akumulasi mikroplastik pada biota mangrove, termasuk ikan lontok (Ophiocara porocephala) yang merupakan ikan musiman pada ekosistem mangrove. Penelitian ini bertujuan untuk menganalisis keberadaan mikroplastik pada insang dan saluran pencernaan ikan lontok pada ekosistem mangrove Dubibir, Situbondo, Jawa Timur. Sebanyak 17 ekor ikan lontok ditangkap menggunakan jaring dan diukur panjang dan beratnya. Analisis mikroplastik pada sampel organ ikan dimulai dengan melakukan penghancuran bahan organik dengan merendam sampel pada larutan H2O2 30 % dan larutan Fe (II) 0,05 M selama 24 jam. Sampel selanjutnya disaring menggunakan kertas Whatman dan diidentifikasi jenis mikroplastiknya menggunakan mikroskop (Olympus CX33). Sebanyak 192 partikel mikroplastik ditemukan pada sampel ikan lontok yang dianalisis dan didominasi oleh jenis fiber diikuti oleh fragmen, film dan beads. Kelimpahan total mikroplastik ditemukan lebih tinggi pada insang dibandingkan pada saluran pencernaan. Hal ini diduga karena perbedaan fungsi organ dan juga proses masuknya mikroplastik pada masing-masing organ. Mikroplastik yang ditemukan pada kedua organ ikan paling banyak berukuran 500 – 1000 µm dan mikroplastik berukuran < 300 µm lebih banyak ditemukan pada saluran pencernaan dibandingkan pada insang. Perbedaan komposisi ukuran mikroplastik antar organ menunjukkan bahwa saluran pencernaan kurang selektif dalam penyerapan partikel mikroplastik. Biru merupakan warna mikroplastik yang mendominasi kedua organ, diikuti oleh warna hitam, merah dan warna lainnya dengan jumlah yang lebih sedikit. Berdasarkan hasil penelitian ini, keberadaan mikroplastik perlu mendapat perhatian khusus karena ikan lontok termasuk jenis ikan konsumsi agar tidak memberikan dampak kesehatan terhadap manusia.

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Dynamic distribution of microplastics in mangrove sediments in Beibu Gulf, South China: Implications of tidal current velocity and tidal range

Cited by 83 publications

References 59 publications

Towards Characterising Microplastic Abundance, Typology and Retention in Mangrove-Dominated Estuaries

Towards Characterising Microplastic Abundance, Typology and Retention in Mangrove-Dominated Estuaries

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

Kelimpahan Mikroplastik Pada Insang Dan Saluran Pencernaan Ikan Lontok Ophiocara porocephala Valenciennes, 1837 (Chordata: Actinopterygii) di Ekosistem Mangrove Dubibir, Situbondo

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