Contribution of Amynthas gracilis (Megascolecidae) and Octolasion cyaneum (Lumbricidae) to soil physical stability : a mesocosm experiment

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The contribution of the introduced species Amynthas gracilis (Kinberg, 1867) and Octolasion cyaneum (Savigny, 1826) to the physical stability of the soil was evaluated in a mesocosm experiment. Pore formation and stable aggregates were measured; as well as changes in bulk density, porosity, and soil...

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Autores principales: Falco, Liliana, Coviella, Carlos
Formato: article Artículo publishedVersion
Lenguaje:Inglés
Publicado: Universidad Nacional de Cuyo. Facultad de Ciencias Agrarias 2016
Materias:
Lombriz de tierra
Amynthas gracilis
Octolasion cyaneum
Propiedades físicas del suelo
Agroecosistemas
Pores
Soil physical stability
Aggregate stability
Introduced species
Earthworms
Acceso en línea:http://bdigital.uncu.edu.ar/8449
Aporte de:
Biblioteca Digital de Universidad Nacional de Cuyo
id I11-R88449
record_format dspace
institution Universidad Nacional de Cuyo
institution_str I-11
repository_str R-8
collection Biblioteca Digital
language Inglés
orig_language_str_mv eng
topic Lombriz de tierra
Amynthas gracilis
Octolasion cyaneum
Propiedades físicas del suelo
Agroecosistemas
Pores
Soil physical stability
Aggregate stability
Introduced species
Earthworms
spellingShingle Lombriz de tierra
Amynthas gracilis
Octolasion cyaneum
Propiedades físicas del suelo
Agroecosistemas
Pores
Soil physical stability
Aggregate stability
Introduced species
Earthworms
Falco, Liliana
Coviella, Carlos
Contribution of Amynthas gracilis (Megascolecidae) and Octolasion cyaneum (Lumbricidae) to soil physical stability : a mesocosm experiment
topic_facet Lombriz de tierra
Amynthas gracilis
Octolasion cyaneum
Propiedades físicas del suelo
Agroecosistemas
Pores
Soil physical stability
Aggregate stability
Introduced species
Earthworms
description The contribution of the introduced species Amynthas gracilis (Kinberg, 1867) and Octolasion cyaneum (Savigny, 1826) to the physical stability of the soil was evaluated in a mesocosm experiment. Pore formation and stable aggregates were measured; as well as changes in bulk density, porosity, and soil moisture. Mesocosm pots were organized into three treatments: 1- soil + Amynthas gracilis, 2- soil + Octolasion cyaneum and 3- soil (control containers). The experiment ran for 13 weeks and it was conducted in controlled conditions in a greenhouse. At the end of the experiment both treatments with earthworms had higher number of pores and stable aggregates at the two considered depths (0 - 5 cm and 5 - 10 cm). The presence of both earthworm species favors the formation of a significantly higher proportion of stable aggregates larger than 5 mm (60%), when compared to the control without worms. These structures helped maintaining bulk density and porosity and improved water circulation. The results show that when compared to the control, both treatments had a lower loss of pore space, lower bulk density, and higher soil moisture, all attributable to earthworm presence. It is concluded that, despite both being introduced species, in intensive agricultural systems, A. gracilis and O. cyaneum can contribute to the maintenance of soil physical stability thus helping to preserve the sustainability of agro-ecosystems, even if native species became rare or locally extinct.
format article
Artículo
Artículo
publishedVersion
author Falco, Liliana
Coviella, Carlos
author_facet Falco, Liliana
Coviella, Carlos
author_sort Falco, Liliana
title Contribution of Amynthas gracilis (Megascolecidae) and Octolasion cyaneum (Lumbricidae) to soil physical stability : a mesocosm experiment
title_short Contribution of Amynthas gracilis (Megascolecidae) and Octolasion cyaneum (Lumbricidae) to soil physical stability : a mesocosm experiment
title_full Contribution of Amynthas gracilis (Megascolecidae) and Octolasion cyaneum (Lumbricidae) to soil physical stability : a mesocosm experiment
title_fullStr Contribution of Amynthas gracilis (Megascolecidae) and Octolasion cyaneum (Lumbricidae) to soil physical stability : a mesocosm experiment
title_full_unstemmed Contribution of Amynthas gracilis (Megascolecidae) and Octolasion cyaneum (Lumbricidae) to soil physical stability : a mesocosm experiment
title_sort contribution of amynthas gracilis (megascolecidae) and octolasion cyaneum (lumbricidae) to soil physical stability : a mesocosm experiment
publisher Universidad Nacional de Cuyo. Facultad de Ciencias Agrarias
publishDate 2016
url http://bdigital.uncu.edu.ar/8449
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