Microplastic concentrations on the beaches of Holbox Island, Mexico from 2018-05-18 to 2018-05-19 (NCEI Accession 0278269)

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This study estimated the concentration of microplastics (i.e. plastics measuring less than 5mm, reported in unit of pieces/m2) on the beaches of Holbox Island, Mexico from 2018-05-18 to 2018-05-19. Microplastic data were collected using a PVC cylinder. This dataset contains the results from all 40 beach sand samples, in a spreadsheet format.

Microplastic concentrations on sandy beaches along the northern coast of Taiwan from 2015-06-04 to 2015-09-14 (NCEI Accession 0277999)

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This study estimated the concentration of microplastics (i.e. plastics measuring less than 5mm, reported in unit of pieces/m3) on sandy beaches along the northern coast of Taiwan from 2015-06-04 to 2015-09-14. Microplastic data were collected using a metal scoop. This dataset contains the results from all 8 sediment samples, in a spreadsheet format.

Microplastic concentrations on beaches along the western Gulf of Thailand during 2019-09-22 (NCEI Accession 0278060)

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This study estimated the concentration of microplastics (i.e. plastics measuring less than 5mm, reported in unit of pieces/kg d.w.) on beaches along the western Gulf of Thailand during 2019-09-22. Microplastic data were collected using a metal spoon. This dataset contains the results from all 25 beach samples, in a spreadsheet format.

Abundance of microplastics in beaches along the Thoothukudi coast, Gulf of Mannar region, India, during 2021-01-03 to 2021-06-08 (NCEI Accession 0282703)

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This study estimated the concentration of microplastics (i.e. plastics measuring less than 5mm; reported in unit of items/kg d.w) in beach sediments along the Thoothukudi coast, Gulf of Mannar region, India, during 2021-01-03 to 2021-06-08. Microplastics in the sediments were collected using a shovel. This dataset contains the results from all 36 sediment samples, in a spreadsheet format.

Microplastic concentrations in the surface sediment of Xialiao Beach, New Taipei City, Taiwan from 2017-07-06 to 2017-07-25 (NCEI Accession 0277996)

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This study estimated the concentration of microplastics (i.e. plastics measuring less than 5mm, reported in unit of pieces/m3) in the surface sediments of Xialiao Beach, New Taipei City, Taiwan from 2017-07-06 to 2017-07-25. Microplastic data were collected using a metal scoop. This dataset contains the results from all 80 surface sediment samples, in a spreadsheet format.

Microplastic concentrations on beaches along the eastern Gulf of Thailand from 2019-04-11 to 2019-05-28 (NCEI Accession 0278059)

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This study estimated the concentration of microplastics (i.e. plastics measuring less than 5mm, reported in unit of pieces/kg d.w.) on beaches along the eastern Gulf of Thailand from 2019-04-11 to 2019-05-28. Microplastic data were collected using a metal spoon. This dataset contains the results from all 34 sediment samples, in a spreadsheet format.

Microplastics abundance in shoreline and seabed sediments collected in the Narragansett Bay, Rhode Island, USA, during 2020-09-25 to 2021-06-03 (NCEI Accession 0281206)

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This study estimated the concentration of microplastics (i.e. plastics measuring less than 5mm; reported in unit of items/kg d.w.) in shoreline and seabed sediments in the Narragansett Bay, Rhode Island, USA, during 2020-09-25 to 2021-06-03. Microplastics in the shoreline sediments were collected using a metal spoon while those in the seabed sediments were collected using a Van Veen grab sampler. Data on sediment dry weight (reported in unit of g) and individual counts of microplastic fibers, fragments and films are provided. This dataset contains the results from all 76 shoreline and 7 seabed sediment samples, in a spreadsheet format.

Concentrations of surface microplastics in the Arrábida coastal area, Portugal collected from 2018-08-22 to 2019-02-27 (NCEI Accession 0279324)

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This study estimated the concentration of surface microplastics (i.e. plastics measuring less than 5mm; reported in unit of items/m3) in the Arrábida coastal area, Portugal from 2018-08-22 to 2019-02-27. Microplastics in the surface water were collected using a neuston net. This dataset contains the results from all 36 surface water samples, in a spreadsheet format

Surface microplastics concentration in the global ocean collected by the Oceaneye Association from 2011-08-31 to 2021-10-05 (NCEI Accession 0276422)

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This dataset contains surface microplastics (i.e., plastics measuring less than 5mm, reported in unit of pieces/m^3) concentration in the global ocean collected by the Oceaneye Association. Microplastics data was collected from 2011-08-31 to 2021-10-05 using manta nets by several trained volunteer groups and Citizen Scientists. This dataset contains the results from all 802 sampling efforts, in a spreadsheet format.

Microplastic concentration in Great Barrier Reef from 2020-03-16 to 2020-03-24 (NCEI Accession 0279321)

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This study estimated the concentration of floating microplastics (i.e. plastics measuring less than 5mm; reported in unit of pieces/m3) in the Great Barrier Reef Marine Park, Australia collected from 2020-03-16 to 2020-03-24. Microplastics in the surface water were collected using a manta net. This dataset contains the results from all 16 surface water samples, in a spreadsheet format.