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No. de sistema: 000002085

LDR _ _ 00000nab^^22^^^^^za^4500
008 _ _ 130311m20169999xx^er^p^^^^^^z0^^^a0eng^d
040 _ _ a| ECO
c| ECO
044 _ _ a| xx
245 0 0 a| Microplastics in the terrestrial ecosystem
b| implications for lumbricus terrestris (Oligochaeta, Lumbricidae)
506 _ _ a| Acceso electrónico sólo para usuarios de ECOSUR
520 1 _ a| Plastic debris is widespread in the environment, but information on the effects of microplastics on terrestrial fauna is completely lacking. Here, we studied the survival and fitness of the earthworm Lumbricus terrestris (Oligochaeta, Lumbricidae) exposed to microplastics (Polyethylene, <150 μm) in litter at concentrations of 7, 28, 45, and 60% dry weight, percentages that, after bioturbation, translate to 0.2 to 1.2% in bulk soil. Mortality after 60 days was higher at 28, 45, and 60% of microplastics in the litter than at 7% w/w and in the control (0%). Growth rate was significantly reduced at 28, 45, and 60% w/w microplastics, compared to the 7% and control treatments. Due to the digestion of ingested organic matter, microplastic was concentrated in cast, especially at the lowest dose (i.e., 7% in litter) because that dose had the highest proportion of digestible organic matter. Whereas 50 percent of the microplastics had a size of <50 μm in the original litter, 90 percent of the microplastics in the casts was <50 μm in all treatments, which suggests size-selective egestion by the earthworms. These concentration-transport and size-selection mechanisms may have important implications for fate and risk of microplastic in terrestrial ecosystems.
538 _ _ a| Adobe Acrobat profesional 6.0 o superior
650 _ 4 a| Lombrices de tierra
650 _ 4 a| Residuos de plástico
650 _ 4 a| Ingestión
650 _ 4 a| Mortalidad
650 _ 4 a| Basuras y aprovechamiento de basuras
650 _ 4 a| Impacto ambiental
700 1 _ a| Huerta Lwanga, Esperanza
c| Dra.
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 Science & Technology
g| Vol. 50, no. 5 (March 2016), p. 2685–2691
x| 1520-5851
901 _ _ a| Artículo con arbitraje
904 _ _ a| Marzo 2016
905 _ _ a| Artecosur
905 _ _ a| Biblioelectrónica
906 _ _ a| Producción Académica ECOSUR
LNG eng
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Microplastics in the terrestrial ecosystem: implications for lumbricus terrestris (Oligochaeta, Lumbricidae)
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 Science & Technology. Vol. 50, no. 5 (March 2016), p. 2685–2691. ISSN: 1520-5851
No. de sistema: 2085
Tipo: - Artículo con arbitraje
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Inglés

"Plastic debris is widespread in the environment, but information on the effects of microplastics on terrestrial fauna is completely lacking. Here, we studied the survival and fitness of the earthworm Lumbricus terrestris (Oligochaeta, Lumbricidae) exposed to microplastics (Polyethylene, <150 μm) in litter at concentrations of 7, 28, 45, and 60% dry weight, percentages that, after bioturbation, translate to 0.2 to 1.2% in bulk soil. Mortality after 60 days was higher at 28, 45, and 60% of microplastics in the litter than at 7% w/w and in the control (0%). Growth rate was significantly reduced at 28, 45, and 60% w/w microplastics, compared to the 7% and control treatments. Due to the digestion of ingested organic matter, microplastic was concentrated in cast, especially at the lowest dose (i.e., 7% in litter) because that dose had the highest proportion of digestible organic matter. Whereas 50 percent of the microplastics had a size of <50 μm in the original litter, 90 percent of the microplastics in the casts was <50 μm in all treatments, which suggests size-selective egestion by the earthworms. These concentration-transport and size-selection mechanisms may have important implications for fate and risk of microplastic in terrestrial ecosystems."


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