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No. de sistema: 000058036

LDR _ _ 00000nab^^22^^^^^za^4500
008 _ _ 170105m20179999xx^mr^p^^^^^^z0^^^a0eng^d
040 _ _ a| ECO
c| ECO
044 _ _ a| xx
245 0 0 a| Incorporation of microplastics from litter into burrows of Lumbricus terrestris
506 _ _ a| Acceso electrónico sólo para usuarios de ECOSUR
520 1 _ a| Pollution caused by plastic debris is an urgent environmental problem. Here, we assessed the effects of microplastics in the soil surface litter on the formation and characterization of burrows built by the anecic earthworm Lumbricus terrestris in soil and quantified the amount of microplastics that was transported and deposited in L. terrestris burrows. Worms were exposed to soil surface litter treatments containing microplastics (Low Density Polyethylene) for 2 weeks at concentrations of 0%, 7%, 28%, 45% and 60%. The latter representing environmentally realistic concentrations found in hot spot soil locations. There were significantly more burrows found when soil was exposed to the surface treatment composed of 7% microplastics than in all other treatments. The highest amount of organic matter in the walls of the burrows was observed after using the treatments containing 28 and 45% microplastics.
520 1 _ a| The highest microplastic bioturbation efficiency ratio (total microplastics (mg) in burrow walls/initial total surface litter microplastics (mg)) was found using the concentration of 7% microplastics, where L. terrestris introduced 73.5% of the surface microplastics into the burrow walls. The highest burrow wall microplastic content per unit weight of soil (11.8 ± 4.8 g kg-¹) was found using a concentration of 60% microplastics. L. terrestris was responsible for size-selective downward transport when exposed to concentrations of 7, 28 and 45% microplastics in the surface litter, as the fraction ≤50 μm microplastics in burrow walls increased by 65% compared to this fraction in the original surface litter plastic. We conclude that the high biogenic incorporation rate of the small-fraction microplastics from surface litter into burrow walls causes a risk of leaching through preferential flow into groundwater bodies. Furthermore, this leaching may have implications for the subsequent availability of microplastics to terrestrial organisms or for the transport of plastic-associated organic contaminants in soil.
650 _ 4 a| Lombrices de tierra
650 _ 4 a| Plásticos
650 _ 4 a| Evaluación de riesgos
650 _ 4 a| Contaminación de suelos
700 1 _ a| Huerta Lwanga, Esperanza
c| Dra.
e| coaut.
700 1 _ a| Gertsen, Hennie
e| coaut.
700 1 _ a| Gooren, Harm
e| coaut.
700 1 _ a| Peters, Piet
e| coaut.
700 1 _ a| Salánki, Tamás
e| coaut.
700 1 _ a| van der Ploeg, Martine
e| coaut.
700 1 _ a| Besseling, Ellen
e| coaut.
700 1 _ a| Koelmans, Albert A.
e| coaut.
700 1 _ a| Geissen Geissen, Violette
e| coaut.
773 0 _
t| Environmental Pollution
g| Vol. 220, part A (January 2017), p. 523–531
x| 0269-7491
900 _ _ a| Solicítelo con su bibliotecario/a
901 _ _ a| Artículo con arbitraje
902 _ _ a| BG / MM
904 _ _ a| Enero 2017
905 _ _ a| Artecosur
905 _ _ a| Desastres
905 _ _ a| Biblioelectrónica
LNG eng
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*Solicítelo con su bibliotecario/a
Incorporation of microplastics from litter into burrows of Lumbricus terrestris
Huerta Lwanga, Esperanza (autor)
Gertsen, Hennie (autor)
Gooren, Harm (autor)
Peters, Piet (autor)
Salánki, Tamás (autor)
van der Ploeg, Martine (autor)
Besseling, Ellen (autor)
Koelmans, Albert A. (autor)
Geissen Geissen, Violette (autor)
Nota: Acceso electrónico sólo para usuarios de ECOSUR
Contenido en: Environmental Pollution. Vol. 220, part A (January 2017), p. 523–531. ISSN: 0269-7491
No. de sistema: 58036
Tipo: - Artículo con arbitraje
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"Pollution caused by plastic debris is an urgent environmental problem. Here, we assessed the effects of microplastics in the soil surface litter on the formation and characterization of burrows built by the anecic earthworm Lumbricus terrestris in soil and quantified the amount of microplastics that was transported and deposited in L. terrestris burrows. Worms were exposed to soil surface litter treatments containing microplastics (Low Density Polyethylene) for 2 weeks at concentrations of 0%, 7%, 28%, 45% and 60%. The latter representing environmentally realistic concentrations found in hot spot soil locations. There were significantly more burrows found when soil was exposed to the surface treatment composed of 7% microplastics than in all other treatments. The highest amount of organic matter in the walls of the burrows was observed after using the treatments containing 28 and 45% microplastics."

"The highest microplastic bioturbation efficiency ratio (total microplastics (mg) in burrow walls/initial total surface litter microplastics (mg)) was found using the concentration of 7% microplastics, where L. terrestris introduced 73.5% of the surface microplastics into the burrow walls. The highest burrow wall microplastic content per unit weight of soil (11.8 ± 4.8 g kg-¹) was found using a concentration of 60% microplastics. L. terrestris was responsible for size-selective downward transport when exposed to concentrations of 7, 28 and 45% microplastics in the surface litter, as the fraction ≤50 μm microplastics in burrow walls increased by 65% compared to this fraction in the original surface litter plastic. We conclude that the high biogenic incorporation rate of the small-fraction microplastics from surface litter into burrow walls causes a risk of leaching through preferential flow into groundwater bodies. Furthermore, this leaching may have implications for the subsequent availability of microplastics to terrestrial organisms or for the transport of plastic-associated organic contaminants in soil."