Microplastics in the surface seawaters of Chabahar Bay, Gulf of Oman (Makran Coasts)

Aliabad, Mojgan Khamarzadeh; Nassiri, Mahmoud; Kor, Kamalodin

doi:10.1016/j.marpolbul.2019.04.037

Cited by 160 publications

(33 citation statements)

References 54 publications

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“…We found that the most typical shape of the MPs is the ber. This is consistent with several previous works (Martin et al, 2017;Willis et al 2019;Aliabad et al 2019 andMehdinia, 2020. Most of these works are also located in the south of Iran and they relate the presence and shape of MPs with the existence of shing and commercial ports and the tourist industry.…”

Section: Discussionsupporting

confidence: 92%

Contamination, Identification and Distribution of Microplastic in Sediments, Surface Seawater and Four Species of Fish on the Northern Shores of the Persian Gulf, south of Iran

Agharokh

Taleshi

Bibak

et al. 2021

Preprint

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The purpose of this study is to investigate Microplastic pollution (MPs) in important ports of the northern coast of the Persian Gulf. MPs were identified on the northern shores of the Persian Gulf in three compartments: sediment, seawater, and four species of fish. In December 2019, sampling was conducted in 7 sampling areas. In this study, 357 MPs were identified in all samples. The predominant polymer in MPs was polypropylene (PP) and later polyethylene (PE). The most polluted areas in terms of MPs in sediments, seawater, and fish were Bushehr, Bandar Abbas, and Qeshm. The fiber was the predominant form of MPs in all sampling stations and those samples taken from the surface seawater, sediments, and fish. The presence of fishing ports with fishing tools, commercial ports, the tourist attractions, and the tourist industry in these areas was an important factor controlling the distribution of MPs in these areas.

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Section: Discussionsupporting

confidence: 92%

Contamination, Identification and Distribution of Microplastic in Sediments, Surface Seawater and Four Species of Fish on the Northern Shores of the Persian Gulf, south of Iran

Agharokh

Taleshi

Bibak

et al. 2021

Preprint

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“…The results of other studies can be compared with our data: the average value was 0.490 ± 0.430 particles/m 3 by neuston net with 333µm mesh size in Chabahar Bay, Iran (Aliabad et al, 2019), 8.90 ± 4.70 particles/m 3 collected by plankton net tows with 330 µm in Xiangshan Bay, China (Chen et al, 2018), 0.240 ± 0.350 particles/m 3 by using a Manta trawl with a 335 µm mesh net in the Bay of Brest, France (Frere et al, 2017), 0.140 ± 0.120 particles/m 3 by trawl nets with 330 µm mesh size in Hangzhou Bay, China (Wang et al, 2020), 514 ± 520 particles/m 3 by a manta trawl with 330 µm mesh in Xiamen Bay, China (Tang et al, 2018); the range of abundance was 0.0100-0.700 particles/m 3 by a manta trawl with 333 µm in Todos Santos Bay, Mexico (Ramirez-Alvarez et al, 2020) and 20.0-120 particles/m 3 collected by a 20µm mesh in Jiaozhou Bay, China (Zheng et al, 2019). It can be found that most previous research used the trawl to collect the microplastic, and the sizes of them mainly larger than 330 µm, and that is why the data we obtained by pumping was high than others.…”

Section: Xiamen Baysupporting

confidence: 64%

Mid-Level Riverine Outflow Matters: A Case of Microplastic Transport in the Jiulong River, China

Liu

et al. 2021

Front. Mar. Sci.

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Riverine outflow is one of the major pathways for microplastic transportation to coastal environments. Research on the output of microplastics in small- or medium-sized rivers will help accurately understand the status of their marine loads. In this study, we used both trawling and pumping methods to collect microplastics of different sizes in the Jiulong River Estuary and Xiamen Bay. We found that the abundance of small microplastics (44 μm–5.0 mm) was at least 20 times higher than the large particles (0.33–5.0 mm). The abundance of the large particles ranges from 4.96 to 16.3 particles/m3, and that of the small particles ranged from 82.8 to 918 particles/m3. Granule was the dominant shape (>60%), and polyethylene (PE), polypropylene (PP), and polyethylene terephthalate (PET) were the most common components. The riverine flux of small microplastics (44 μm–5 mm, 472 ± 230 t/y) was at a medium level and was eight times greater than that of large particles (0.33–5.0 mm, 61.2 ± 2.6 t/y). The behavior of the large microplastics was relatively conservative, whose abundance had a significant correlation with salinity (R2 = 0.927) and was mainly influenced by physical factors. In contrast, results of statistical analysis revealed that more complicated factors influenced the small microplastics.

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“… Colton, Knapp & Burns (1974) reported a concentration of 0.000067 MP L –1 (>947 μm, plankton tows) in the open northwest Atlantic Ocean while Doyle et al (2011) reported a maximum of 0.00019 MP L –1 (>505 μm, plankton tows) in the coastal northeast Pacific Ocean. Aliabad, Nassiri & Kor (2019) reported a maximum of 0.00114 MP L –1 (>333 μm, plankton tows) in the Gulf of Oman while Payton, Beckingham & Dustan (2020) reported a maximum of 0.6 MP L –1 (>43 μm, grab samples) in the estuarine Cooper River of South Carolina.…”

Section: Discussionmentioning

confidence: 99%

Plastics in Porifera: The occurrence of potential microplastics in marine sponges and seawater from Bocas del Toro, Panamá

Fallon¹,

Freeman²

2021

PeerJ

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Microplastics (MP) are now considered ubiquitous across global aquatic environments. The ingestion of MP by fish and other marine vertebrates is well studied, but the ingestion of MP by marine invertebrates is not. Sponges (Phylum Porifera) are particularly understudied when it comes to MP ingestion, even though they are widely distributed across benthic habitats, can process large volumes of seawater, and can retain small particles within their water filtration systems. This study examines the presence of potential MP (PMP) in wild marine sponges and seawater collected in Bocas del Toro, Panamá. Subsurface seawater and tissue from six common Caribbean sponge species was collected in Saigon Bay, a heavily impacted, shallow-water coral reef. Seawater samples were filtered onto glass fiber filters to retain any PMP present and sponge tissue was digested with bleach, heated and filtered. Filters were examined using fluorescence microscopy to quantify PMP. An average of 107 ± 25 PMP L–1 was detected in seawater from Saigon Bay with particles ranging in size between 10 μm and ~3,000 μm. The number of PMP found in sponge tissue ranged between 6 ± 4 and 169 ± 71 PMP g–1 of dry tissue. Most particles found in sponge samples were very small (10–20 μm), but fibers greater than 5,000 μm were detected. Our results indicate that PMP exists within the tissues of the sponges we studied, but future studies should confirm the presence of MP in sponges using chemical analysis. Most importantly, the discrepancy between low levels of PMP in our sponge samples and high levels in the surrounding seawater highlights the potential for sponges to resist and/or egest MP. Finally, we provide a critical evaluation of our methods to improve their use in future MP work with benthic marine organisms.

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Microplastics in the surface seawaters of Chabahar Bay, Gulf of Oman (Makran Coasts)

Cited by 160 publications

References 54 publications

Contamination, Identification and Distribution of Microplastic in Sediments, Surface Seawater and Four Species of Fish on the Northern Shores of the Persian Gulf, south of Iran

Contamination, Identification and Distribution of Microplastic in Sediments, Surface Seawater and Four Species of Fish on the Northern Shores of the Persian Gulf, south of Iran

Mid-Level Riverine Outflow Matters: A Case of Microplastic Transport in the Jiulong River, China

Plastics in Porifera: The occurrence of potential microplastics in marine sponges and seawater from Bocas del Toro, Panamá

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