Microplastics distribution, abundance and composition in sediment, fishes and benthic organisms of the Gorgan Bay, Caspian sea

Bagheri, Tahereh; Gholizadeh, Mohammad; Abarghouei, Safoura; Zakeri, Mohammad; Hedayati, Aliakbar; Rabaniha, M; Aghaeimoghadam, Abasali; Hafezieh, M

doi:10.1016/j.chemosphere.2020.127201

Cited by 107 publications

(31 citation statements)

References 38 publications

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“…Plastic particles can fill the gizzard and possibly block the pyloric valve leading into the intestine (Reynolds and Ryan 2018 ). Microplastics were present in the benthic fish species and benthic organisms of the Caspian Sea, and the abundance of plastic particles in animals near the shore was greater than in the central part (Bagheri et al 2020 ). High doses of microplastics led to fewer species and fewer juvenile isopods and periwinkles in European flat oysters and their associated benthic communities (Green 2016 ).…”

Section: Sampling Procedures and Toolsmentioning

confidence: 99%

Microplastic sampling techniques in freshwaters and sediments: a review

et al. 2021

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Pollution by microplastics is of increasing concern due to their ubiquitous presence in most biological and environmental media, their potential toxicity and their ability to carry other contaminants. Knowledge on microplastics in freshwaters is still in its infancy. Here we reviewed 150 investigations to identify the common methods and tools for sampling microplastics, waters and sediments in freshwater ecosystems. Manta trawls are the main sampling tool for microplastic separation from surface water, whereas shovel, trowel, spade, scoop and spatula are the most frequently used devices in microplastic studies of sediments. Van Veen grab is common for deep sediment sampling. There is a need to develop optimal methods for reducing identification time and effort and to detect smaller-sized plastic particles.

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Section: Sampling Procedures and Toolsmentioning

confidence: 99%

Microplastic sampling techniques in freshwaters and sediments: a review

et al. 2021

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“…In our study, a relatively high abundance of polypropylene (PP; 28.7%) and polyethylene (PE; 12.3%) was detected. Since nowadays PP and PE were the most abundant applied plastics in urban, industry food packaging, and agriculture (Bagheri et al, 2020). Therefore, this result is reasonable.…”

Section: Source Analysis Of Microplastics In the Environment Of Xincu...mentioning

confidence: 76%

Microplastic Distribution and Influence Factor Analysis of Seawater and Surface Sediments in a Typical Bay With Diverse Functional Areas: A Case Study in Xincun Lagoon, China

Wei

et al. 2022

Front. Environ. Sci.

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Microplastics come directly or indirectly from human activities. The bay and coastal areas are constantly under pressure from human activities, including tourism, fishing, and aquaculture. Microplastic pollution is now recognized as a great threat to bay environments. In this study, we assessed microplastics in the Xincun Lagoon Bay, which had multiple human activities, to understand whether human activities could directly reflect the pollution level of microplastics. The results showed the dominant microplastics were small (100–500 μm, 45.2%) and transparent (57.0%), mainly consisting of fibers (95.7%), and cellophane (54.4%) was the dominant polymer. The color, type, and component indicated that wastes from aquaculture, laundry wastewater in the Tanka fishing raft area, and domestic wastes from tourism were the primary sources of microplastics in Xincun Bay. During the rainy season, microplastic abundances in surface water and surface sediment at the outer bay were found to be significantly higher (108.8 ± 37.1 item/L and 250.4 ± 92.0 item/kg, respectively) than those found at the inner bay (34.3 ± 12.9 item/L and 167.6 ± 71.7 item/kg, respectively), which presented a reverse trend in the dry season (p < .01). Although Xincun bay has a relatively closed environment and diverse human activities, concentrated rainfall and strong winds could cause microplastic abundance inside the bay during the rainy season to be lower than that outside the bay. Furthermore, the comparison of microplastic abundances in the areas with intensive human activities and non-human activity areas indicated that the intensity of human activities could not directly reflect the pollution of microplastics in the lagoon bay. It is also necessary to consider the geographical and seasonal characteristics in order to explain the pollution degree of microplastics in a bay.

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“…There is an exponential increase in the number of studies looking at the presence of microplastics in marine and aquatic biota [17,19,57,59,60,81,83,89,102,[194][195][196][197][198][199][200][201][202][203]. Microplastics find their way into biota usually by ingestion (active uptake) [102,204,205] or adhesion, adsorption, or inhalation (passive uptake).…”

Section: Biotamentioning

confidence: 99%

“…With so much focus, microplastic (MP) has become a major research topic of environmental and ecological concern in aquatic environments [5]. Microplastics have been found in all environmental matrices including water, suspended particulates in the water column [6][7][8][9][10][11][12][13][14][15][16], sediments [6,[17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33][34], wastewater [35][36][37][38][39][40][41][42][43][44][45][46][47][48][49][50][51][52][53]…”

Section: Introductionmentioning

confidence: 99%

Micro-Nano Plastic in the Aquatic Environment: Methodological Problems and Challenges

Uddin

Fowler

Habibi

et al. 2022

Animals

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Microplastic research has become a buzz word. It is seen as one of the most pressing issues of Anthropocene contamination. There is certainly no doubt about the ubiquitous presence of microplastic (MP) in almost all environmental matrices. However, the validity of considering them as a vector for contaminants needs some reconsideration, there are other more potent pathways. Their effect on marine biota also calls for some realistic experiments with environmental concentrations of MP and nanoplastic (NP). It has been observed that in most published literature, polymer characterization is performed. Is it necessary to do, or will merely finding and confirming the particle as plastic suffice for environmental research? Harmonization of protocols is necessary, and there is likely a need for some inter-laboratory comparison exercises in order to produce comparable data and reliable assessments across regions. Samples collected from the same area using different techniques show an order of magnitude difference in MP concentration. The issue of nanoplastic is more contentious; are we technologically ready to identify NP in environmental samples?

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Microplastics distribution, abundance and composition in sediment, fishes and benthic organisms of the Gorgan Bay, Caspian sea

Cited by 107 publications

References 38 publications

Microplastic sampling techniques in freshwaters and sediments: a review

Microplastic sampling techniques in freshwaters and sediments: a review

Microplastic Distribution and Influence Factor Analysis of Seawater and Surface Sediments in a Typical Bay With Diverse Functional Areas: A Case Study in Xincun Lagoon, China

Micro-Nano Plastic in the Aquatic Environment: Methodological Problems and Challenges

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