Microplastics in Surface Waters and Sediments in the Sebou Estuary and Atlantic Coast, Morocco

Haddout, Soufiane; Gimiliani, Giovana Teixeira; Kumari, Priya; Hoguane, A. M.; Casila, Joan Cecilia; Ljubenkov, Igor

doi:10.1080/00032719.2021.1924767

Cited by 32 publications

(16 citation statements)

References 52 publications

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“…Regarding the representativeness of MPs types, fragments were by far the most abundant one in the estuarine sediments (st1), in agreement with findings from other studies (Vianello et al, 2013;Talley et al, 2020;Haddout et al, 2021;Liong et al, 2021). Conversely, fibers were less abundant, but consistently spread throughout the six stations.…”

Section: Distribution Patterns According To Types and Sizes Of Mpssupporting

confidence: 90%

“…Comparatively with other estuaries, the abundance of MPs found in Sado sediments was only lower than levels reported for Durban Bay in South Africa (111,933 ± 29,189 items kg −1 ; Preston-Whyte et al, 2021). However, it was higher than Densu delta in Ghana (4.0 ± 0.82 items per 10 g; Blankson et al, 2022), Warnow in Germany (379 ± 28 items kg −1 at the S10 station; Enders et al, 2019), Miri in Borneo Island (456.2 ± 33.6 items kg −1 in S5; Liong et al, 2021), Sebou in Morocco (187 items kg −1 in E1; Haddout et al, 2021) and both Dalio (ca 400 items kg −1 ; Xu et al, 2020) and Changjiang (where the higher abundance was ca 150 items kg −1 ; Peng et al, 2017)…”

Section: Abundance Of Mps and Comparison With Other Studiesmentioning

confidence: 87%

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Distribution patterns of microplastics in subtidal sediments from the Sado river estuary and the Arrábida marine park, Portugal

Rodrigues

Antunes

Pais

et al. 2022

Front. Environ. Sci.

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Understanding local accumulation patterns of microplastics in subtidal sediments is crucial to assess how available such particles are for ingestion by benthic feeders and to identify the potential pollution sources in the region upon which is urgent to act. The coastal urban centers of Setúbal and Sesimbra (Portugal) and the multiple activities taking place at the contiguous Sado estuary and in the sheltered waters of Professor Luiz Saldanha Marine Park make this a relevant case study about MPs pollution in the seabed. Here, a short-term investigation assessed the spatiotemporal distribution, abundance, and composition of MPs on the nearshore seabed. Sediment samples were monthly collected from summer 2018 to winter 2019, in six stations. Despite the differences observed in rainfall between campaigns, no distinct patterns were detected in the accumulation of MPs throughout the sampled months. Yet, strong variations occurred among stations. The abundance of MPs in the Sado estuary (1042.8 ± 430.8 items kg−1) was higher in comparison to all the stations located along the marine park (52.9 ± 31.9 items kg−1). Fragments comprised 70% of particles found in estuarine sediments, while fibers were the predominant type in marine sediments. The majority of MPs collected in the estuary shared the same size class as the best represented grain size fraction: 0.250–0.500 mm. On average, the ratio between the abundance of MPs and the abundance of meiofauna organisms was higher in the estuary, suggesting more encounter rates, by both meiofauna and their predators, with MPs. The distribution of MPs throughout the study area was moderately correlated with sediment sorting and organic matter content. Also, the distinct mineralogical content of each station indicates a reduced sediment transit between stations and consequently a weak exportation of MPs from the estuary. The majority of the polymers identified by Fourier Transform Infrared Spectroscopy was denser than seawater. Polyethylene terephthalate represented 41% of the items analyzed and was mostly assigned to fibers and fiber bundles. Unveiling the distribution patterns of MPs along this segment of the Portuguese west coast enabled to identify a high-risk area where the implementation of preventive measures is urgent.

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Section: Distribution Patterns According To Types and Sizes Of Mpssupporting

confidence: 90%

Section: Abundance Of Mps and Comparison With Other Studiesmentioning

confidence: 87%

Distribution patterns of microplastics in subtidal sediments from the Sado river estuary and the Arrábida marine park, Portugal

Rodrigues

Antunes

Pais

et al. 2022

Front. Environ. Sci.

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“…The results show that MPs abundance in Can Gio Sea (2.08 ± 2.21 pieces/m 3 ) was higher than that of the North-East Atlantic (0-1.5 items/m 3 ) [51] and mid-North Pacific Ocean (0.51 ± 0.36 items/m 3 ) [52]. However, MPs abundance near estuaries in other studies were reported to be higher than this study, for example: Sebou Estuary and Atlantic Coast, Morocco (10 to 168 particles/m 3 ) [53] and Yangtze Estuary, China (0-259 items/m 3 ) [54]. The higher abundance of MPs in the seawater near the estuaries than that of rivers was reported previously, for example: Xiangxi Bay contained 0.11-68 pieces/m 3 compared to the Beijiang River of South China (0.56 ± 0.45 pieces/m 3 ) [24].…”

Section: Abundance and Distribution Of Surface Water Mps From Canals ...contrasting

confidence: 77%

Characteristics of Microplastics and Their Affiliated PAHs in Surface Water in Ho Chi Minh City, Vietnam

et al. 2022

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Microplastic pollution has become a worldwide concern. However, studies on the distribution of microplastics (MPs) from inland water to the ocean and their affiliated polycyclic aromatic hydrocarbons (PAHs) are still limited in Vietnam. In this study, we investigated the distribution of MPs and PAHs associated with MPs in canals, Saigon River, and Can Gio Sea. MPs were found at all sites, with the highest average abundance of MPs being 104.17 ± 162.44 pieces/m3 in canals, followed by 2.08 ± 2.22 pieces/m3 in the sea, and 0.60 ± 0.38 pieces/m3 in the river. Fragment, fiber, and granule were three common shapes, and each shape was dominant in one sampling area. White was the most common MP color at all sites. A total of 13 polymers and co-polymers were confirmed, and polyethylene, polypropylene, and ethylene-vinyl acetate were the three dominant polymers. The total concentration of MPs-affiliated PAHs ranged from 232.71 to 6448.66, from 30.94 to 8940.99, and from 432.95 to 3267.88 ng/g in Can Gio sea, canals, and Saigon River, respectively. Petrogenic sources were suggested as a major source of PAHs associated with MPs in Can Gio Sea, whereas those found in Saigon River and canals were from both petrogenic and pyrogenic sources.

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“…According to the investigations, estuaries were filled with MPs [87] in the form of fibre, fragment, foam, film, and pellets [89][90][91][92][93]. Unlike in surface water, MPs from sediment samples were predominantly in the 0.05-0.3 mm size range, making them easily ingestible by aquatic organisms [86].…”

Section: Microplastic Pollution In Estuariesmentioning

confidence: 99%

Prevalence of microplastics, antibiotic resistant genes and microplastic associated biofilms in estuary - A review

Dhinagaran

2022

Environmental Engineering Research

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The estuarine ecosystem is under threat due to the addition of different anthropogenic pollutants. Among the various pollutants, microplastics(MPs), and antibiotics play a significant role in affecting estuarine organisms and human health by transport through the food chain. In the estuaries, microorganisms, including pathogens, colonise microplastics by the development of biofilms. Estuaries have long been home to MPs, served as novel hubs for the transmission of Antibiotic Resistance Genes (ARGs). As a result of their continual interactions with a variety of aquatic creatures, MP-associated bacterial communities will eventually present a transfer opportunity to organisms that consume MPs. To comprehend the presence of microplastics and ARGs in the estuaries, a thorough review is necessary. This review discusses the various sources of MPs and antibiotic pollution, as well as the transport of ARGs via biofilm formed on MPs. Furthermore, the factors affecting biofilm formation in estuaries are reviewed. In addition, the transport of ARGs by microbial populations within biofilm is discussed. The ARGs are transported into the food chain, which will be a threat to human health. Hence, the occurrence of antibiotic-resistant genes in fish is discussed.

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Microplastics in Surface Waters and Sediments in the Sebou Estuary and Atlantic Coast, Morocco

Cited by 32 publications

References 52 publications

Distribution patterns of microplastics in subtidal sediments from the Sado river estuary and the Arrábida marine park, Portugal

Distribution patterns of microplastics in subtidal sediments from the Sado river estuary and the Arrábida marine park, Portugal

Characteristics of Microplastics and Their Affiliated PAHs in Surface Water in Ho Chi Minh City, Vietnam

Prevalence of microplastics, antibiotic resistant genes and microplastic associated biofilms in estuary - A review

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