An overview of microplastic and nanoplastic pollution in agroecosystems

Ee Ling Ng*, Esperanza Huerta Lwanga, Simon M. Eldridge, Priscilla Johnston, Hang Wei Hu, Violette Geissen, Deli Chen

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

152 Citations (Scopus)

Abstract

Microplastics and nanoplastics are emerging pollutants of global importance. They are small enough to be ingested by a wide range of organisms and at nano-scale, they may cross some biological barriers. However, our understanding of their ecological impact on the terrestrial environment is limited. Plastic particle loading in agroecosystems could be high due to inputs of some recycled organic waste and plastic film mulching, so it is vital that we develop a greater understanding of any potentially harmful or adverse impacts of these pollutants to agroecosystems. In this article, we discuss the sources of plastic particles in agroecosystems, the mechanisms, constraints and dynamic behaviour of plastic during aging on land, and explore the responses of soil organisms and plants at different levels of biological organisation to plastic particles of micro and nano-scale. Based on limited evidence at this point and understanding that the lack of evidence of ecological impact from microplastic and nanoplastic in agroecosystems does not equate to the evidence of absence, we propose considerations for addressing the gaps in knowledge so that we can adequately safeguard world food supply.
Original languageEnglish
Pages (from-to)1377-1388
JournalScience of the Total Environment
Volume627
DOIs
Publication statusPublished - 15 Jun 2018

Keywords

  • Ecotoxicology
  • Plant response
  • Plastic degradation
  • Soil food web
  • Soils

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