Microplastic concentrations in deep-sea sediments from Rockall Trough (Scotland, UK) collected aboard RRS Discovery on 2017-05-18 (NCEI Accession 0278002)

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This study estimated the concentration of microplastics (i.e. plastics measuring less than 5mm, reported in unit of pieces per g d.w.) in deep-sea sediments from Rockall Trough (Scotland, UK) on 2017-05-18. Microplastic data were collected aboard RRS Discovery using a megacorer. This dataset contains the results from all 90 deep-sea 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.

Microplastics concentration in benthic sediments in primary fishing grounds around Ireland, northeast Atlantic Ocean, from 2020-06-07 to 2021-02-27 (NCEI Accession 0277497)

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This study was carried out to estimate the microplastics (i.e. plastics measuring less than 5mm, reported in unit of pieces per 100 g of d.w.) concentration in benthic sediments in primary fishing grounds in the northeast Atlantic Ocean. Microplastics data was collected from 2020-06-07 to 2021-02-27 using a Day grab. This dataset contains the results from all 17 sampling efforts, in a spreadsheet format.

Microplastics concentration collected from MRV Scotia, MRV Alba na Mara, and RV Sir John Murray in sea surface waters around Scotland from 2014-01-06 to 2020-01-18 (NCEI Accession 0259692)

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This study estimated the load of surface microplastics in the surface waters around Scotland from 2014-01-06 to 2020-01-18. Microplastics data were collected using neuston net aboard MRV Scotia, MRV Alba na Mara and RV Sir John Murray. This dataset contains the results from all 398 surface net tows, in a spreadsheet format.

Microplastics concentration along a latitudinal gradient in the Atlantic Ocean collected aboard RV Polarstern from 2015-11-01 to 2015-11-28 (NCEI Accession 0270542)

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This study was carried out to estimate the microplastics (i.e. plastics measuring less than 5mm, reported in unit of pieces/m^3) concentration along a latitudinal gradient in the Atlantic Ocean. Microplastics data was collected from 2015-11-01 to 2015-11-28 aboard RV Polarstern. Ocean water was pumped onboard the vessel via the bow water system to collect microplastics samples. This dataset contains the results from all 76 sampling stations, in a spreadsheet format.

Surface microplastic concentrations in the Salento coastal seas (Southern Puglia, Italy) collected aboard R/V Pelagia from 2020-10-17 to 2021-06-28 (NCEI Accession 0277995)

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This study estimated the concentration of surface microplastics (i.e. plastics measuring less than 5mm, reported in unit of pieces/m3) in the Salento coastal seas (Southern Puglia, Italy) from 2020-10-17 to 2021-06-28. Microplastic data were collected aboard R/V Pelagia using a manta net. This dataset contains the results from all 18 surface water samples, in a spreadsheet format.

Microplastics concentration collected from four coastal areas of the Mediterranean Sea: Saronikos Gulf, Ligurian Sea, Gulf of Lion, and Gabes Gulf, from 2018-09-05 to 2019-11-20 (NCEI Accession 0270528)

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This study was carried out to estimate the microplastics (i.e. plastics measuring less than 5mm, reported in unit of pieces/m^3) concentration in four coastal areas of the Mediterranean Sea, namely, Saronikos Gulf, Ligurian Sea, Gulf of Lion, and Gabes Gulf. Microplastics data was collected from 2018-09-05 to 2019-11-20 using manta net. This dataset contains the results from all 71 surface net tows, in a spreadsheet format.

Abundances of microplastics concentrations collected from R/V Mediterranean Explorer in the oligotrophic Israeli Mediterranean coastal waters from 2013-07-25 to 2015-05-18 (NCEI Accession 0260245)

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This study estimated the seasonal abundances of sea surface microplastics (i.e. plastics measuring 0.3mm- 5mm, reported in unit of pieces/m^3) at 17 sites along the Israeli Mediterranean coastal waters from 2013-07-25 to 2015-05-18. Data was collected using a manta net. This dataset contains the results from all 108 net tows, in a spreadsheet format. Tows were conducted for 15 minutes along shore at an average cruising speed of 2 knots.

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.