Bacterial community composition and diversity uncovered in experimental sludge treatment reed bed systems with different swine slurry hydraulic loadings

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Bacterial community composition and diversity uncovered in experimental sludge treatment reed bed systems with different swine slurry hydraulic loadings

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Título: Bacterial community composition and diversity uncovered in experimental sludge treatment reed bed systems with different swine slurry hydraulic loadings
Autor: Arroyo Hernández, Paula;Sáenz de Miera y Carnicer, Luis;Falagán, Jorge;Ansola González, Gemma
Facultad/Centro: Facultad de Ciencias Biologicas y Ambientales
Area de conocimiento: Ecologia
Resumen: Nowadays swine slurry management is a very important environmental issue. Sludge treatment reed bed systems are sludge treatment systems based on constructed wetlands. The present study characterizes via 16S rRNA gene high-throughput the bacterial communities contained in untreated swine slurry and treated swine slurry by means of mesocosm-scale sludge treatment reed beds receiving different slurry loadings. The bacterial community composition varied between the treated and untreated slurry, with a notable slurry loading influence also observed. Richness, diversity and ordination measurements of the studied communities evidenced profound differences between the untreated and treated swine slurry bacterial communities; and only slight differences among the treated swine slurry communities. Interestingly, the slurry loading allowed to define two groups: mesocosm communities residing in the highest hydraulic slurry loadings and other mesocosm communities. The pH value emerged as an important community composition, diversity and ordination predictor. The functional bacterial community composition was predicted through the in silico approach. Results confirmed that the main nitrogen cycle metabolic pathways were present in the mesocosm communities with ammonification and assimilatory nitrate reduction as the most commonly detected nitrogen pathways in treated swine slurry.
Descripción física: P. 175-184
Revisión por pares: SI
Editor: Elsevier
Datos: Ecological Engineering, vol. 123
URI: http://hdl.handle.net/10612/9502
Fecha: 2018-11
Tipo: info:eu-repo/semantics/article
Materia: Ecología. Medio ambiente
Palabras clave: High-throughput sequencing
Bacterial communities
STRB
Swine slurry
Nitrogen cycle
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