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Assessing plastic size distribution and quantity on a remote island in the South Pacific
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2021-04-16
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anthropogenic debris
Henderson Island
marine debris
microplastic
nanoparticle
plastic pollution
Henderson Island
marine debris
microplastic
nanoparticle
plastic pollution
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Abstract
Plastics are an environmental threat; however, their fate once in the pelagic environment is poorly known. We compare results from assessments of floating plastics in the South Pacific Ocean with accumulated beach plastics from Henderson Island. We also compare accumulated plastic mass on Henderson during 2015 and 2019 and investigate the presence of nanoplastics. There were differences between the size classes of beach and pelagic plastics, and an increase in microplastics (0.33-5 mm) on the beach between 2015 and 2019. Micro- and nanoplastics were found at all sites (mean ± SE: 1960 ± 356 pieces/kg dw). Across the whole beach this translates to >4 billion plastic particles in the upper 5 cm. This is concerning, particularly given Henderson is uninhabited and distant from urban centres (~2350 km from Pape'ete, French Polynesia). The vast number of small particles on Henderson may make nearshore filter feeders susceptible to ingestion and subsequent detrimental impacts.
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Emma C. Nichols, Jennifer L. Lavers, Simeon Archer-Rand, Alexander L. Bond, Assessing plastic size distribution and quantity on a remote island in the South Pacific, Marine Pollution Bulletin, Volume 167, 2021, 112366, ISSN 0025-326X, https://doi.org/10.1016/j.marpolbul.2021.112366.
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Copyright © 2021, The Authors. This document is the author’s final accepted version of the journal article. You are advised to consult the published version if you wish to cite from it.
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0025-326X
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1879-3363