Gathering at the top? Environmental controls of microplastic uptake and biomagnification in freshwater food webs
2021
Krause, Stefan | Baranov, Viktor | Nel, Holly, A | Drummond, Jennifer, D | Kukkola, Anna | Hoellein, Timothy | Sambrook Smith, Gregory, H | Lewandowski, Joerg | Bonet, Berta | Packman, Aaron, I | Sadler, Jon | Inshyna, Valentyna | Allen, Steve | Allen, Deonie | Simon, Laurent | Mermillod-Blondin, Florian | Lynch, Iseult | School of Geography, Earth and Environmental Sciences [Birmingham] ; University of Birmingham [Birmingham] | Équipe 3 - Écologie, Évolution, Écosystemes Souterrains (E3S) ; Laboratoire d'Ecologie des Hydrosystèmes Naturels et Anthropisés (LEHNA) ; Université Claude Bernard Lyon 1 (UCBL) ; Université de Lyon-Université de Lyon-École Nationale des Travaux Publics de l'État (ENTPE)-Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL) ; Université de Lyon-Université de Lyon-École Nationale des Travaux Publics de l'État (ENTPE)-Centre National de la Recherche Scientifique (CNRS) | Department of Biology II, Ludwig Maximilians University, Munich ; Department of Biology II, | Loyola University Chicago ; Department of Biology | Department of Ecohydrology ; Leibniz-Institute of Freshwater Ecology and Inland Fisheries (IGB) | Humboldt-Universität zu Berlin = Humboldt University of Berlin = Université Humboldt de Berlin (HU Berlin) | DEPARTMENT OF CIVIL AND ENVIRONMENTAL ENGINEERING NORTHWESTERN UNIVERSITY EVANSTON USA ; Partenaires IRSTEA ; Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA) | University of Strathclyde [Glasgow]
International audience
显示更多 [+] 显示较少 [-]英语. Microplastics are ubiquitous in the environment, with high concentrations being detected now also in river corridors and sediments globally. Whilst there has been increasing field evidence of microplastics accumulation in the guts and tissues of freshwater and marine aquatic species, the uptake mechanisms of microplastics into freshwater food webs, and the physical and geological controls on pathway-specific exposures to microplastics, are not well understood. This knowledge gap is hampering the assessment of exposure risks, and potential ecotoxicological and public health impacts from microplastics.This review provides a comprehensive synthesis of key research challenges in analysing the envi- ronmental fate and transport of microplastics in freshwater ecosystems, including the identification of hydrological, sedimentological and particle property controls on microplastic accumulation in aquatic ecosystems. This mechanistic analysis outlines the dominant pathways for exposure to microplastics in freshwater ecosystems and identifies potentially critical uptake mechanisms and entry pathways for microplastics and associated contaminants into aquatic food webs as well as their risk to accumulate and biomagnify.We identify seven key research challenges that, if overcome, will permit the advancement beyond current conceptual limitations and provide the mechanistic process understanding required to assess microplastic exposure, uptake, hazard, and overall risk to aquatic systems and humans, and provide key insights into the priority impact pathways in freshwater ecosystems to support environmental man- agement decision making.
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