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Ecosistemas
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Ecosistemas
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Ecological Infrastructures among greenhouses: revegetation and soil quality

Infraestructuras Ecológicas entre invernaderos: revegetación y calidad de suelos
Authors: Emilio Benítez; Beatriz Moreno; Daniel Paredes; Mónica González; Mercedes Campos; Estefanía Rodríguez;

Ecological Infrastructures among greenhouses: revegetation and soil quality

Abstract

Los cultivos bajo invernadero son extremadamente vulnerables a plagas. El papel clave que representa la biodiversidad funcional en el control de plagas mediante el uso de enemigos naturales ha sido evidenciado. Relacionado con este planteamiento surge el concepto de Infraestructura Ecológica, parches de hábitats seminaturales entre invernaderos que proporcionan hábitats de refugio para enemigos naturales de plagas. Sin embargo, su implantación en suelos degradados alrededor de los invernaderos de Almería no es tarea sencilla, ya que la mayoría de ellos son una mezcla de capas procedentes de los movimientos de tierra necesarios para la construcción de dichos invernaderos. En este trabajo se evaluó el efecto de la revegetación sobre la funcionalidad y diversidad de bacterias, implicadas en el mantenimiento de la red alimentaria del suelo. La revegetación aumentó la funcionalidad potencial microbiana, así como la biomasa de bacterias totales y activas. El análisis de la comunidad bacteriana mediante secuenciación de genes 16S rRNA mostró diferentes perfiles bacterianos ensamblados con la especie vegetal, la cual determinó las relaciones estequiométricas de nutrientes del suelo y por tanto las categorías de bacterias copiotróficas y oligotróficas. La predicción de funciones dependientes de la actividad bacteriana evidenció una redundancia funcional de grupos, lo cual sugiere, en todos los suelos estudiados, el aporte potencial de los servicios ecosistémicos relacionados. Dado que las relaciones funcionales entre el suelo y la parte aérea son fundamentales para asegurar la viabilidad de las Infraestructuras Ecológicas, la selección de plantas que mejoran el suelo debería ser un claro punto de partida.

Crops under indoor agriculture are extremely vulnerable to pests. It has been evidenced the role of functional biodiversity in pest control by using natural pest enemies. Directly linked to these assumptions have emerged the concept of Ecological Infrastructures, patches of semi-natural habitats distributed throughout greenhouses providing shelter habitats for pest natural enemies. However, implantation of Ecological Infrastructures in degraded soils -such as those around Almeria greenhouses- is not a simple task since most of them are a mix of layers derived from the needed land movements for building greenhouses. In this work, we evaluated the effect of plant revegetation on functionality and diversity of bacteria, as drivers of food web structure. Revegetation increased microbial potential functionality and total bacterial biomass and diversity in a degraded soil. Analysis of the soil bacterial community using 16S rRNA gene sequencing showed distinct microbiota profiles depending on the plant species, which drove soil nutrient stoichiometry and then bacterial copiotrophic and oligotrophic categories. Predictions of bacteria-dependent functions evidenced the functional redundancy of groups, suggesting the potential provision of related ecosystem services in all the studied soils. Since feedbacks between the aboveground and belowground ecosystem processes are critical in Ecological Infrastructures functionality, selection of plants-ameliorating soil should be considered.

El presente estudio ha sido financiado por el proyecto RECUPERA 2020 Ministerio de Economía y Competitividad-CSIC.

Keywords

Soil resilence, Bacterial communities, Ameliorating plants, Plantas mejoradoras, Comunidad bacteriana, Resiliencia, Functionality, Funcionalidad

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selected citations
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This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
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