The seasonal distribution characteristics of microplastics on bathing beaches along the coast of Qingdao, China

Gao, Fenglei; Li, Jingxi; Hu, Jun; Sui, Baolu; Wang, Chuanxing; Sun, Chengjun; Li, Xianguo; Ju, Peng

doi:10.1016/j.scitotenv.2021.146969

Cited by 61 publications

(26 citation statements)

References 63 publications

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“…These spectra were compared to the spectrogram on the instrument with a database for validation. Matched spectra with a match rate higher than 70% were accepted (Gao et al, 2021).…”

Section: Figurementioning

confidence: 99%

Tidal variation shaped microplastic enrichment patterns in mangrove blue carbon ecosystem of northern Beibu Gulf, China

et al. 2022

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Mangroves are considered to be a sink for microplastics (MPs) due to their unique characteristics. Previous studies mainly focused on the spatial distribution of MPs, but few researchers have addressed the influence of tidal variation on this distribution, especially since the MP total number in mangroves was unknown. In this study, surface sediment samples were collected in mangroves from the Beibu Gulf, South China Sea, and the abundance, composition, and number of MPs were investigated. The results showed that MPs were widely present in all mangrove sediment samples, with abundances ranging from 26.67 ± 9.43 to 239.94 ± 37.80 items/kg. The distribution of MPs was heterogeneous among different sampling sites, with the highest levels in the Shankou (SK) area. The MP abundance in the same mangrove forest gradually increased from the low tidal zone to the high tidal zone, with the enrichment factor ranging from 1.50 to 4.00. The MP abundance was significantly correlated with particulate organic carbon (POC) (n = 12, R = 0.664, p < 0.05). Results showed that mangroves had an interception effect on MPs and factors affecting MP distribution in mangrove sediments included not only tides but also human activities, such as aquaculture, agriculture, and residential life. Finally, this paper estimated the MP total number in mangroves at different sampling areas and tidal zones, and the middle tidal zone was considered to be more accurate for MP pollution assessment in mangroves.

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“…These spectra were compared to the spectrogram on the instrument with a database for validation. Matched spectra with a match rate higher than 70% were accepted (Gao et al, 2021).…”

Section: Figurementioning

confidence: 99%

Tidal variation shaped microplastic enrichment patterns in mangrove blue carbon ecosystem of northern Beibu Gulf, China

et al. 2022

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“…Swimming in recreational coastal waters (RCWs) is an important route by which humans are exposed to pollutants in the coastal environment. Many studies have reported various pollutants in RCWs, including heavy metals (Bigus et al, 2016), nitrogen, phosphorus, viruses (Wei et al, 2020), microplastics (F. L. Gao et al, 2021), and pollutants resulting in elevated chemical oxygen demands, which may facilitate the spread of ARGs (Stepanauskas et al, 2006;Tandukar et al, 2013;Forsberg et al, 2014). However, the overall profiles, influent factors, and driving mechanisms of ARGs in RCWs are still not fully understood.…”

Section: Introductionmentioning

confidence: 99%

Occurrence and driving mechanism of antibiotic resistance genes in marine recreational water around Qinhuangdao, China

Han

Wen

et al. 2022

Front. Mar. Sci.

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Rapid urbanization and other human activities have exacerbated the global human health risks associated with antibiotic resistance genes (ARGs). Swimming in contaminated waters is one of important pathways by which humans can be exposed to ARGs. However, little is currently known about the overall levels of ARGs in recreational waters and the forces driving their occurrence. In this study, we analyzed the ARGs and bacterial communities in water samples taken from five recreational coastal waters (RCWs) and their adjacent estuaries in the Qinhuangdao area of Bohai Bay, China, using highthroughput quantitative PCR and 16S rRNA gene amplicon sequencing technique. The relative abundances of ARGs in RCWs varied greatly, and occurred at levels close to, or even higher than, those in the neighboring estuaries, ranging from 9.4×10 -2 to 2.5 copies/16S rRNA gene. A total of 159 different ARGs able to express resistance to almost all antibiotics were detected in all of the water samples. b-lactamase resistance genes (blaTEM gene) were the most abundance of all ARGs. Patterns of ARG occurrence were significantly correlated with those of bacterial communities (Mantel test, P < 0.05). A partial redundancy analysis showed that differences in bacterial communities accounted for 50.3% of the total ARG variations, which was much higher than the sum of the contribution of mobile genetic elements (18.1%) and the other selected environmental factors (8.3%). Principal coordinate analysis based on Bray-Curtis distance revealed the similarities between ARG profiles in the RCWs and in their adjacent estuaries. To our knowledge, this is the first study to report the ARG profiles in RCWs using high throughput qPCR technology. These results implied that it is necessary to develop proper regulations and monitoring strategies of RCWs for reducing risks of ARGs on human health. KEYWORDS antibiotic resistance genes (ARGs), mobile genetic elements (MGEs), bacterial community, recreational coastal water, human public health Frontiers in Marine Science frontiersin.org 01

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“…After the epidemic, China, as a country most affected by the epidemic, soar from 45 tons to 247 tons of medical waste during the outbreak, including food and lunch boxes used by patients, a medical staff of PPE etc. Chinese scholars carry out more extensive research on marine plastic pollution in different regions, including coastal Qingdao [58] , freshwater lake Poyang Lake, and the East China Sea [59] .…”

Section: Resultsmentioning

confidence: 99%

Impact of the COVID-19 pandemic on research on marine plastic pollution – A bibliometric-based assessment

Wang

Huang

2022

Marine Policy

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The seasonal distribution characteristics of microplastics on bathing beaches along the coast of Qingdao, China

Cited by 61 publications

References 63 publications

Tidal variation shaped microplastic enrichment patterns in mangrove blue carbon ecosystem of northern Beibu Gulf, China

Tidal variation shaped microplastic enrichment patterns in mangrove blue carbon ecosystem of northern Beibu Gulf, China

Occurrence and driving mechanism of antibiotic resistance genes in marine recreational water around Qinhuangdao, China

Impact of the COVID-19 pandemic on research on marine plastic pollution – A bibliometric-based assessment

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