title: Summer holidays as break-point in shaping a tannery sludge microbial community around a stable core microbiota.
abstract: Recently, several investigations focused on the discovery of a bacterial consortium shared among different wastewater treatment plants (WWTPs). Nevertheless, the definition of a core microbiota over time represents the necessary counterpart in order to unravel the dynamics of bacterial communities in these environments. Here we performed a monthly survey on the bacterial community of a consortial industrial plant. Objectives of this study were: (1) to identify a core microbiota constant over time; (2) to evaluate the temporal dynamics of the community during one year. A conspicuous and diversified core microbiota is constituted by operational taxonomic units which are present throughout the year in the plant. Community composition data confirm that the presence and abundance of bacteria in WWTPs is highly consistent at high taxonomic level. Our results indicate however a difference in microbial community structure between two groups of samples, identifying the summer holiday period as the break-point. Changes in the structure of the microbial community occur otherwise gradually, one month after another. Further studies will clarify how the size and diversity of the core microbiota could affect the observed dynamics.
authors.affiliation: Biology Department, Protistology-Zoology Unit, University of Pisa, Via A. Volta 4, 56126, Pisa, Italy.
authors.forename: Cesira
authors.initials: C
authors.lastname: Giordano
authors.affiliation: Biology Department, Protistology-Zoology Unit, University of Pisa, Via A. Volta 4, 56126, Pisa, Italy.
authors.forename: Vittorio
authors.initials: V
authors.lastname: Boscaro
authors.affiliation: Department of Civil and Environmental Engineering, University of Florence, Via S. Marta n.3, 50139, Florence, Italy.
authors.forename: Giulio
authors.initials: G
authors.lastname: Munz
authors.affiliation: CER2CO (CEntro Ricerca Reflui Conciari) Via Arginale Ovest 8, 56020, San Romano-S. Miniato, Pisa, Italy.
authors.forename: Gualtiero
authors.initials: G
authors.lastname: Mori
authors.affiliation: Biology Department, Protistology-Zoology Unit, University of Pisa, Via A. Volta 4, 56126, Pisa, Italy.
authors.forename: Claudia
authors.initials: C
authors.lastname: Vannini
mesh_terms: D007220:Industrial Waste; D064307:Microbiota; D012621:Seasons; D012722:Sewage / Q000382:microbiology*; D018505:Waste Management
chemical_list: D007220:Industrial Waste; D012722:Sewage