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Microplastic transport in soil by earthworms
Rillig, Matthias C. ;  Ziersch, Lisa ;  Hempel, Stefan

HaupttitelMicroplastic transport in soil by earthworms
AutorRillig, Matthias C.
AutorZiersch, Lisa
AutorHempel, Stefan
Seitenzahl6 Seiten
Freie SchlagwörterEcology; Environmental sciences
DDC580 Pflanzen (Botanik)
Auch erschienen inScientific Reports. - 7 (2017) , Artikel Nr. 1362
ZusammenfassungDespite great general benefits derived from plastic use, accumulation of plastic material in ecosystems, and especially microplastic, is becoming an increasing environmental concern. Microplastic has been extensively studied in aquatic environments, with very few studies focusing on soils. We here tested the idea that microplastic particles (polyethylene beads) could be transported from the soil surface down the soil profile via earthworms. We used Lumbricus terrestris L., an anecic earthworm species, in a factorial greenhouse experiment with four different microplastic sizes. Presence of earthworms greatly increased the presence of microplastic particles at depth (we examined 3 soil layers, each 3.5 cm deep), with smaller PE microbeads having been transported downward to a greater extent. Our study clearly shows that earthworms can be significant transport agents of microplastics in soils, incorporating this material into soil, likely via casts, burrows (affecting soil hydraulics), egestion and adherence to the earthworm exterior. This movement has potential consequences for exposure of other soil biota to microplastics, for the residence times of microplastic at greater depth, and for the possible eventual arrival of microplastics in the groundwater.
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Fachbereich/EinrichtungFB Biologie, Chemie, Pharmazie
Arbeitsbereich/InstitutAG Ökologie der Pflanzen
Erscheinungsjahr2017
Dokumententyp/-SammlungenWissenschaftlicher Artikel
SpracheEnglisch
RechteCreative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.
Anmerkungen des AutorsGefördert durch die DFG und den Open-Access-Publikationsfonds der Freien Universität Berlin
Erstellt am19.06.2017 - 13:32:53
Letzte Änderung19.06.2017 - 13:33:05
 
Statische URLhttp://edocs.fu-berlin.de/docs/receive/FUDOCS_document_000000026938
DOI10.1038/s41598-017-01594-7
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