Factores que influyen sobre la actividad microbiana en basureros de hormigas cortadoras de hojas
Ecología Austral, 24:103-110 (2014)Soil microorganisms play a key role in the process of nutrient cycling. Therefore, the knowledge of the factors that influence its activity is vital for a better understanding of terrestrial ecosystem function. We use external refuse dumps from the leaf-cutting ant Acromyrmex lobicornis such as a model system to determine the influence of the concentration and diversity of organic matter on the activity of soil decomposers. We estimated the concentration of carbonate compounds and the respiration rate of microorganisms in samples of refuse dumps under lab conditions. We also estimated the diversity of the ant diet like a proxy of the diversity of organic compounds in their refuse dumps. The activity of microorganisms did not show association with the concentration of carbonate compounds, but showed a tendency to a positive association with the diversity of the ant diet. Since the diversity of organic matter in refuse dumps depends on the diversity of the plants harvested by ants, these results partially support the idea that the activity of soil microorganisms partially depends on the diversity of resources to decompose. This work exemplify how leaf-cutting ants affect soil properties in arid environments where the availability of organic matter is limiting, and illustrate a novel way how the reduction of vegetation diversity may indirectly affect the productivity of a system through the impoverish of the leaf-cutting ant´s diet.
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rev-ecoaus-article-422023-11-02T19:21:39Z Factores que influyen sobre la actividad microbiana en basureros de hormigas cortadoras de hojas Factores que influyen sobre la actividad microbiana en basureros de hormigas cortadoras de hojas Fernández, Anahí Farji-Brener, Alejandro G. Satti, Patricia Ecología Austral, 24:103-110 (2014)Soil microorganisms play a key role in the process of nutrient cycling. Therefore, the knowledge of the factors that influence its activity is vital for a better understanding of terrestrial ecosystem function. We use external refuse dumps from the leaf-cutting ant Acromyrmex lobicornis such as a model system to determine the influence of the concentration and diversity of organic matter on the activity of soil decomposers. We estimated the concentration of carbonate compounds and the respiration rate of microorganisms in samples of refuse dumps under lab conditions. We also estimated the diversity of the ant diet like a proxy of the diversity of organic compounds in their refuse dumps. The activity of microorganisms did not show association with the concentration of carbonate compounds, but showed a tendency to a positive association with the diversity of the ant diet. Since the diversity of organic matter in refuse dumps depends on the diversity of the plants harvested by ants, these results partially support the idea that the activity of soil microorganisms partially depends on the diversity of resources to decompose. This work exemplify how leaf-cutting ants affect soil properties in arid environments where the availability of organic matter is limiting, and illustrate a novel way how the reduction of vegetation diversity may indirectly affect the productivity of a system through the impoverish of the leaf-cutting ant´s diet. Ecología Austral, 24:103-110 (2014)Los microorganismos del suelo cumplen un papel relevante en el ciclado de nutrientes. En consecuencia, conocer los factores que influyen sobre su actividad es de fundamental importancia para comprender mejor el funcionamiento de los ecosistemas terrestres. Empleando a los basureros externos de la hormiga cortadora Acromyrmex lobicornis como sistema modelo, analizamos la asociación de la diversidad de compuestos carbonados y la concentración de carbono con la respiración potencial de microorganismos en ese sustrato. En muestras de basureros en condiciones controladas de laboratorio estimamos la concentración de carbono y la respiración de los microorganismos. En paralelo, cuantificamos la diversidad de la dieta de cada nido como un estimador de la diversidad de compuestos carbonados en sus basureros. La actividad de los microorganismos no se relacionó con la concentración de carbono en los basureros pero mostró una relación de tendencia positiva con la riqueza de la dieta de las hormigas. Como la diversidad de compuestos carbonados en el basurero podría reflejar parcialmente la diversidad de plantas cosechadas por las hormigas, este resultado sugiere que la actividad de los microorganismos descomponedores depende parcialmente de la diversidad de recursos para descomponer. Este trabajo ejemplifica cómo las hormigas cortadoras afectan al suelo en ambientes áridos en donde la materia orgánica es limitante; e ilustra de forma novedosa cómo la pérdida de la diversidad vegetal, al empobrecer la dieta de las hormigas, puede afectar indirecta y negativamente la actividad de los descomponedores. Asociación Argentina de Ecología 2014-04-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Articles Artículos application/pdf https://ojs.ecologiaaustral.com.ar/index.php/Ecologia_Austral/article/view/42 10.25260/EA.14.24.1.0.42 Ecología Austral; Vol. 24 No. 1 (2014): April 2014, Pages 1-132; 103-110 Ecología Austral; Vol. 24 Núm. 1 (2014): April 2014, Pages 1-132; 103-110 1667-782X 0327-5477 spa https://ojs.ecologiaaustral.com.ar/index.php/Ecologia_Austral/article/view/42/45 Derechos de autor 2014 Anahí Fernández, Alejandro G. Farji-Brener, Patricia Satti https://creativecommons.org/licenses/by/3.0/ |
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Fernández, Anahí Farji-Brener, Alejandro G. Satti, Patricia |
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Fernández, Anahí Farji-Brener, Alejandro G. Satti, Patricia Factores que influyen sobre la actividad microbiana en basureros de hormigas cortadoras de hojas |
| author_facet |
Fernández, Anahí Farji-Brener, Alejandro G. Satti, Patricia |
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Fernández, Anahí |
| title |
Factores que influyen sobre la actividad microbiana en basureros de hormigas cortadoras de hojas |
| title_short |
Factores que influyen sobre la actividad microbiana en basureros de hormigas cortadoras de hojas |
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Factores que influyen sobre la actividad microbiana en basureros de hormigas cortadoras de hojas |
| title_fullStr |
Factores que influyen sobre la actividad microbiana en basureros de hormigas cortadoras de hojas |
| title_full_unstemmed |
Factores que influyen sobre la actividad microbiana en basureros de hormigas cortadoras de hojas |
| title_sort |
factores que influyen sobre la actividad microbiana en basureros de hormigas cortadoras de hojas |
| description |
Ecología Austral, 24:103-110 (2014)Soil microorganisms play a key role in the process of nutrient cycling. Therefore, the knowledge of the factors that influence its activity is vital for a better understanding of terrestrial ecosystem function. We use external refuse dumps from the leaf-cutting ant Acromyrmex lobicornis such as a model system to determine the influence of the concentration and diversity of organic matter on the activity of soil decomposers. We estimated the concentration of carbonate compounds and the respiration rate of microorganisms in samples of refuse dumps under lab conditions. We also estimated the diversity of the ant diet like a proxy of the diversity of organic compounds in their refuse dumps. The activity of microorganisms did not show association with the concentration of carbonate compounds, but showed a tendency to a positive association with the diversity of the ant diet. Since the diversity of organic matter in refuse dumps depends on the diversity of the plants harvested by ants, these results partially support the idea that the activity of soil microorganisms partially depends on the diversity of resources to decompose. This work exemplify how leaf-cutting ants affect soil properties in arid environments where the availability of organic matter is limiting, and illustrate a novel way how the reduction of vegetation diversity may indirectly affect the productivity of a system through the impoverish of the leaf-cutting ant´s diet. |
| publisher |
Asociación Argentina de Ecología |
| publishDate |
2014 |
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https://ojs.ecologiaaustral.com.ar/index.php/Ecologia_Austral/article/view/42 |
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