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Augmentation of global marine sedimentary carbon storage in the age of plastic
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- Craig Smeaton
- School of Geography and Sustainable Development University of St Andrews St Andrews Fife KY16 9AL UK
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Description
<jats:title>Abstract</jats:title><jats:p>Plastic is entering the world's oceans at an unprecedented rate impacting the functioning of the natural marine environment. Yet little consideration has been given to the potential of carbon (C) in the form of plastic (C<jats:sub>plas</jats:sub>) to augment the marine carbon system. Here it is shown that C<jats:sub>plas</jats:sub> is an integral part of the anthropogenic marine C cycle. Annually, 7.8 ± 1.73 Mt of C<jats:sub>plas</jats:sub> is deposited at the seabed with a further 17.2–57.1 Mt C<jats:sub>plas</jats:sub> already present on the seafloor. The quantity of C<jats:sub>plas</jats:sub> currently being deposited on the seabed annually exceeds the rate at which organic carbon (OC) is buried in some marine sediments and by 2050 it is possible that the rate at which C<jats:sub>plas</jats:sub> is buried will match fjord sediments which are global hotspots for OC burial. Though unwanted this new anthropogenic pathway for C to reach the marine environment cannot be ignored.</jats:p>
Journal
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- Limnology and Oceanography Letters
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Limnology and Oceanography Letters 6 (3), 113-118, 2021-03-08
Wiley
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Details 詳細情報について
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- CRID
- 1360579817458355328
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- ISSN
- 23782242
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- Data Source
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- Crossref