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Downward migrating microplastics in lake sediments are a tricky indicator for the onset of the Anthropocene
Dimante-Deimantovica, I.; Saarni, S.; Barone, M.; Buhhalko, N.; Stivrins, N.; Suhareva, N.; Tylmann, W.; Vianello, A.; Vollertsen, J. (2024). Downward migrating microplastics in lake sediments are a tricky indicator for the onset of the Anthropocene. Science Advances 10(8): eadi8136 . https://dx.doi.org/10.1126/sciadv.adi8136
In: Science Advances. AAAS: New York. ISSN 2375-2548; e-ISSN 2375-2548, meer
Peer reviewed article  
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  • Dimante-Deimantovica, I.
  • Saarni, S.
  • Barone, M.
  • Buhhalko, N.
  • Stivrins, N.
  • Suhareva, N., meer
  • Tylmann, W.
  • Vianello, A.
  • Vollertsen, J.
Abstract
    Plastics are a recent particulate material in Earth’s history. Because of plastics persistence and wide-range presence, it has a great potential of being a global age marker and correlation tool between sedimentary profiles. In this research, we query whether microplastics can be considered among the array of proxies to delimit the Anthropocene Epoch (starting from the year 1950 and above). We present a study of microplastics deposition history inferred from sediment profiles of lakes in northeastern Europe. The sediments were dated with independent proxies from the present back to the first half of the 18th century. Regardless of the sediment layer age, microplastic particles were found throughout the cores in all sites. Depending on particles’ aspect ratio, less elongated particles were found deeper, while more elongated particles and fibers have reduced mobility. We conclude that interpretation of microplastics distribution in the studied sediment profiles is ambiguous and does not strictly indicate the beginning of the Anthropocene Epoch.
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