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...

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Autores principales: Falco, Liliana, Coviella, Carlos
Formato: Artículo revista
Lenguaje:Inglés
Publicado: Facultad de Ciencias Agrarias-UNCuyo 2016
Materias:
poros
estabilidad física del suelo
estabilidad de agregados
especies introducidas
lombrices
pores
soil physical stability
aggregate stability
introduced species
earthworms
Acceso en línea:https://revistas.uncu.edu.ar/ojs3/index.php/RFCA/article/view/3226
Aporte de:
Revista de la Facultad de Ciencias Agrarias UNCuyo de Universidad Nacional de Cuyo
id I11-R107article-3226
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institution Universidad Nacional de Cuyo
institution_str I-11
repository_str R-107
container_title_str Revista de la Facultad de Ciencias Agrarias UNCuyo
language Inglés
format Artículo revista
topic poros
estabilidad física del suelo
estabilidad de agregados
especies introducidas
lombrices
pores
soil physical stability
aggregate stability
introduced species
earthworms
spellingShingle poros
estabilidad física del suelo
estabilidad de agregados
especies introducidas
lombrices
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 poros
estabilidad física del suelo
estabilidad de agregados
especies introducidas
lombrices
pores
soil physical stability
aggregate stability
introduced species
earthworms
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
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.
publisher Facultad de Ciencias Agrarias-UNCuyo
publishDate 2016
url https://revistas.uncu.edu.ar/ojs3/index.php/RFCA/article/view/3226
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