Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 545423
Title Biogenic transport of glyphosate in the presence of LDPE microplastics : A mesocosm experiment
Author(s) Yang, Xiaomei; Lwanga, Esperanza Huerta; Bemani, Akram; Gertsen, Hennie; Salanki, Tamas; Guo, Xuetao; Fu, Haimei; Xue, Sha; Ritsema, Coen; Geissen, Violette
Source Environmental Pollution 245 (2019). - ISSN 0269-7491 - p. 829 - 835.
DOI https://doi.org/10.1016/j.envpol.2018.11.044
Department(s) Soil Physics and Land Management
CBLB Bodembiologie
WIMEK
PE&RC
Publication type Refereed Article in a scientific journal
Publication year 2019
Keyword(s) Earthworm burrows - Glyphosate transport - Microplastics - Soil ecosystem
Abstract

The accumulation of plastic debris and herbicide residues has become a huge challenge and poses many potential risks to environmental health and soil quality. In the present study, we investigated the transport of glyphosate and its main metabolite, aminomethylphosphonic acid (AMPA) via earthworms in the presence of different concentrations of light density polyethylene microplastics in the litter layer during a 14-day mesocosm experiment. The results showed earthworm gallery weight was negatively affected by the combination of glyphosate and microplastics. Glyphosate and AMPA concentrated in the first centimetre of the top soil layer and the downward transport of glyphosate and AMPA was only detected in the earthworm burrows, ranging from 0.04 to 4.25 μg g−1 for glyphosate and from 0.01 (less than limit of detection) to 0.76 μg g−1 for AMPA. The transport rate of glyphosate (including AMPA) from the litter layer into earthworm burrows ranged from 6.6 ± 4.6% to 18.3 ± 2.4%, depending on synergetic effects of microplastics and glyphosate application. The findings imply that earthworm activities strongly influence pollutant movement into the soil, which potentially affects soil ecosystems. Further studies focused on the fate of pollutants in the microenvironment of earthworm burrows are needed. Glyphosate was mainly transported into deeper soil layers via earthworm galleries which were influenced by synergetic effects of microplastics and glyphosate application.

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