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The California (USA) legislature passed a pair of bills in 2018 that require the State to develop microplastics management strategies for both drinking water and the coastal ocean.  Central to creation of those strategies is an understanding of the critical thresholds at which microplastics actuate biological responses and how various microplastic properties influence those thresholds.  To address this need, the Southern California Coastal Water Research Project Authority (SCCWRP) hosted a series of webinars on the topic, followed by a workshop among researchers and policy experts from around the world to galvanize science about the relationship between microplastics levels and biological effects.  Here, we present a series of papers that evolved from that workshop, which were foundational to California’s microplastics management policies.  Dr. Steve Weisberg, SCCWRP’s Executive Director, serves as Lead Guest Editor on this Collection.

Special Note: In keeping with research integrity principles, all papers co-authored by Dr. Weisberg, Dr. Koelmans, and other Microplastics and Nanoplastics editors were handled by other editors of the journal.

Lead Guest Editor

Steve Weisberg, Southern California Coastal Water Research Project Authority

  1. To assess the potential risk of microplastic exposure to humans and aquatic ecosystems, reliable toxicity data is needed. This includes a more complete foundational understanding of microplastic toxicity and b...

    Authors: Leah M. Thornton Hampton, Hans Bouwmeester, Susanne M. Brander, Scott Coffin, Matthew Cole, Ludovic Hermabessiere, Alvine C. Mehinto, Ezra Miller, Chelsea M. Rochman and Stephen B. Weisberg
    Citation: Microplastics and Nanoplastics 2022 2:18
  2. Microplastic particles (MPs) are ubiquitous across a wide range of aquatic habitats but determining an appropriate level of risk management is hindered by a poor understanding of environmental risk. Here, we i...

    Authors: Alvine C. Mehinto, Scott Coffin, Albert A. Koelmans, Susanne M. Brander, Martin Wagner, Leah M. Thornton Hampton, Allen G. Burton Jr, Ezra Miller, Todd Gouin, Stephen B. Weisberg and Chelsea M. Rochman
    Citation: Microplastics and Nanoplastics 2022 2:17
  3. Throughout the past decade, many studies have reported adverse effects in biota following microplastic exposure. Yet, the field is still emerging as the current understanding of microplastic toxicity is limite...

    Authors: Leah M. Thornton Hampton, Heili Lowman, Scott Coffin, Emily Darin, Hannah De Frond, Ludovic Hermabessiere, Ezra Miller, Vera N. de Ruijter, Andrea Faltynkova, Syd Kotar, Laura Monclús, Samreen Siddiqui, Johannes Völker, Susanne Brander, Albert A. Koelmans, Chelsea M. Rochman…
    Citation: Microplastics and Nanoplastics 2022 2:13
  4. Microplastics have been documented in drinking water, but their effects on human health from ingestion, or the concentrations at which those effects begin to manifest, are not established. Here, we report on t...

    Authors: Scott Coffin, Hans Bouwmeester, Susanne Brander, Pauliina Damdimopoulou, Todd Gouin, Ludovic Hermabessiere, Elaine Khan, Albert A. Koelmans, Christine L. Lemieux, Katja Teerds, Martin Wagner, Stephen B. Weisberg and Stephanie Wright
    Citation: Microplastics and Nanoplastics 2022 2:12
  5. The global production of plastic currently exceeds 300 million tonnes per year. The extensive use of plastics and bad waste management has resulted in the presence of microplastics at different levels in the f...

    Authors: Ruud Peters, Nadine de Jong, Laura de Haan, Stephanie Wright and Hans Bouwmeester
    Citation: Microplastics and Nanoplastics 2022 2:3
  6. Concern regarding the human health implications that exposure to nano- and microplastic particles (NMPs) potentially represents is increasing. While there have been several years of research reporting on the e...

    Authors: Todd Gouin, Robert Ellis-Hutchings, Leah M. Thornton Hampton, Christine L. Lemieux and Stephanie L. Wright
    Citation: Microplastics and Nanoplastics 2022 2:2