Testing the factors controlling the numbers of microplastics on beaches along the western Gulf of Thailand

Thepwilai, Supakorn; Wangritthikraikul, Kannika; Chawchai, Sakonvan; Bissen, Raphael

doi:10.1016/j.marpolbul.2021.112467

Cited by 14 publications

(22 citation statements)

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“…Microplastics were found in many places such as the Chao Phraya River, Bandon Bay, and beaches along the eastern Gulf of Thailand, the studies revealed that the anthropogenic activities were related to the concentration of microplastics in the area (Bissen & Chawchai, 2020;Chinfak et al, 2021;Thepwilai et al, 2021). The studies on microplastic contamination in Thailand mostly emphasized marine organism, surface sediment and surface water (Bissen & Chawchai, 2020;Chinfak et al, 2021;Jiwarungrueangkul et al, 2021;Thepwilai et al, 2021). On the other hand, there are a few studies on determining microplastic accumulation at depth and associate with mud deposit -fine grain sediment such as clay and silt.…”

Section: List Of Tablesmentioning

confidence: 99%

“…The coastal area in the eastern and western Gulf of Thailand was investigated , microplastics were found ranging from 420 to 24,980 and from 20 to 273 items per kg dry sediment in the eastern coast and the western coast of the Gulf of Thailand, respectively. A factor that affected the number of microplastic was not only human activity but also other factors such as surface circular direction, geomorphology, sunlight, and coastal erosion structure (Bissen & Chawchai, 2020;Thepwilai et al, 2021). From the studies on surface sediment in estuary zone, the abundance of microplastic ranged in 300-900 and 33-400 items per kg dry weight in the dry and the rainy seasons, respectively.…”

Section: Plastic Pollution In Thailandmentioning

confidence: 99%

“…The sediment samples were collected in mangrove zone that area between land and sea (Figure 11). Top 5 cm surface was grabbed by stainless shovel within quadrat pattern (50x50 cm 2 ), 3 samples per site (Heo et al, 2013;Thepwilai et al, 2021), the pattern has shown in Figure 12. Subsequently, sediment cores were collected from the mangrove forest at the Maeklong River mouth and Queen Sirikit Park.…”

Section: Sediment Samplingmentioning

confidence: 99%

“…Due to dense vegetation in the mangrove forests, we selected three sampling points along MK and KK according to accessibility. At each sampling point, three surface sediments (0-5 cm from the sediment surface) were collected by stainless shovel within a quadrat frame (50x50 cm 2 ) in September 2020 (Heo et al, 2013;Thepwilai et al, 2021). Eighteen samples were packed with aluminum foil, transported, and stored in the freezer at the Department of Geology, Chulalongkorn University, until further analysis.…”

Section: Sediment Samplingmentioning

confidence: 99%

“…Beach with heavy tourism and recreational activities had higher levels of plastic debris (Akkajit et al, 2019). Although in Thailand, plastic consumption has increased by 7 -8 % per year, the microplastic studies in Thailand are paucity, making a lack of information on plastic waste management strategy (Apinanwattanakul, 2018;Bissen & Chawchai, 2020;Marks et al, 2020;Matsuguma et al, 2017;Puthcharoen & Leungprasert, 2019;Ta et al, 2020;Thepwilai et al, 2021;Wang et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

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Microplastics in mangrove sediments at Maeklong river mouth, Samut Songkhram province

Chaisanguansuk

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Microplastics are omnipresent in our environment. Living organisms were affected by microplastic pollution. This study was investigated microplastic in mangrove environments because there are accumulated various substances from land and sea. Moreover, mangrove is an important ecosystem that is a habitat for marine life�and benthic organism. Our study area is the Maeklong River mouth, Samut Songkhram Province, Thailand. Surface sediments�from 3 stations were collected from the Maeklong River area and 2 core sediments were collected from the Maeklong River mouth and the Queen Sirikit Park. Sediment samples were analyzed by Loss on ignition (LOI) and grain size distribution. Microplastics were digested and observed their characteristics. Surface sediments from the Maeklong River mouth were found microplastic with average 580 ? 87 item per kilogram. The abundance of microplastic at far away site from river mouth was lower amount than at river mouth site. Previous studies in the Klong Khon tidal canal showed that the number of microplastic from the Klong Khon was higher than the Maeklong River. According to the Maeklong River flow are turbulent that affected on sediment also other particle to accumulate. 142 cm core was found microplastic ranging from 0 5,200 items per kilogram that concentration was decreasing with more depth. Location and grain size had an influence in the accumulation of microplastic in sediment. The most common microplastics that found in this study were 0.1 1.0 mm in size. The fiber was the abundance shape of microplastic. Polyester is the prevalent type of plastic in this study, the result refers to the source that can generate microplastic into environment such as wastewater from washing process and material from fishing.

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Section: List Of Tablesmentioning

confidence: 99%

Section: Plastic Pollution In Thailandmentioning

confidence: 99%

Section: Sediment Samplingmentioning

confidence: 99%

Section: Sediment Samplingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Microplastics in mangrove sediments at Maeklong river mouth, Samut Songkhram province

Chaisanguansuk

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A new hotspot of macro-litter in the Rutland Island, South Andaman, India: menace from IORC

Shankar

Purti²,

Ramakrishnan

et al. 2023

Environ Sci Pollut Res

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Thirteen sandy beaches of remote Rutland Island were divided into three zones to identify the litter pollution, their source, pathway of plastic transport, to determine the level of macro litter contamination, and its impact on coastal biota. The total area surveyed was 0.52 km 2 (5,20,020.79 m 2 ), and the total number of litter items enumerated was 3,17,565 belonging to twenty-seven distinct litter types. The beaches in Zone II and Zone III were clean and Zone I were very dirty. The maximum litter density (1.03 items/ m 2 ) was observed in Photo Nallah 1 and Photo Nallah 2, whereas the lowest (0.09 items/ m 2 ) was observed in Jahaji beach. The primary contributor of litter on Rutland's beaches was plastics (60%-99%), presumed to originate from the Indian Ocean Rim Countries (IORC). A collective solid waste management initiative by the IORC is essential in preventing littering on remote islands. IntroductionSixty to ninety-nine million tons of litter are disposed into the environment each year and a predictive assessment articulates that the quantity is likely to increase threefold by 2060 (Lebreton and Andrady 2019). The marine litter was classi ed into macro (> 2.5cm to 1m), meso (5mm to 2.5cm), and microplastics (< 5mm) based on their size. Macro litter was further categorized based on its origin as land-derived or oceanic (Galgani et al. 2015; GESAMP 2020). Land-derived litter is associated with agricultural, industrial, and recreational activities. In contrast, ocean-derived litter is typically associated with commercial shipping, sheries, and recreational boating. 192 coastal countries are predicted to create 275 million metric tonnes of plastic garbage, with large volumes (4.8-12.7 million metric tonnes) entering marine systems (Cheshire et al. 2009;Jambeck et al. 2016). A voluminous quantity of these plastics enters marine systems since 40% of the global population (80 persons/km 2 ) live within one hundred kilometers of the coastlines, posing a severe threat to the marine faunal diversity (Gall and Thompson 2015;Galgani et al. 2015;Cavalcante et al. 2020). Consequently, mid-ocean garbage patches, plastic deposition on remote islands, entanglement, plastic ingestion, and mortality of marine animals have been increased globally (Miralles et al. 2018;Rodríguez-Díaz et al. 2020;Kaviarasan et al. 2020).Multiple factors in uence the prevalence of litter on beaches, including the location and topography of the beach, the existence of rivers and streams, oods, and winds (Ryan et al. 2018). Sandy beaches are often assumed to be signi cant sinks for oating litter, and their occurrence may be detrimental to biotic communities, and turtle nesting sites (Nelms et al. 2015).Once plastic litter reaches the vast expanse of the ocean, it may either be deposited on the adjacent coast or carried long distances (due to its low density) by the wind and current patterns. Plastic litter may get stranded on open ocean Islands during this transport, and secluded island systems may serve as a prospective basin (Lavers and Bond ...

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First-of-Its-Kind: Nationwide meta-analysis of microplastic pollution and risk assessment in Thailand

Suyamud,

Pan,

et al. 2024

Chemosphere

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Testing the factors controlling the numbers of microplastics on beaches along the western Gulf of Thailand

Cited by 14 publications

References 91 publications

Microplastics in mangrove sediments at Maeklong river mouth, Samut Songkhram province

Microplastics in mangrove sediments at Maeklong river mouth, Samut Songkhram province

A new hotspot of macro-litter in the Rutland Island, South Andaman, India: menace from IORC

First-of-Its-Kind: Nationwide meta-analysis of microplastic pollution and risk assessment in Thailand

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