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dc.contributor.author
Ayarza, Joaquin M.
dc.contributor.author
Erijman, Leonardo
dc.date.available
2019-07-11T21:05:27Z
dc.date.issued
2011-04
dc.identifier.citation
Ayarza, Joaquin M.; Erijman, Leonardo; Balance of Neutral and Deterministic Components in the Dynamics of Activated Sludge Floc Assembly; Springer; Microbial Ecology; 61; 3; 4-2011; 486-495
dc.identifier.issn
0095-3628
dc.identifier.uri
http://hdl.handle.net/11336/79441
dc.description.abstract
Understanding the processes that generate patterns of community structure is a central focus of ecological research. With that aim, we manipulated the structure of bacterial activated sludge to test the influence of the species richness and composition of bacterial communities on the dynamics of activated sludge floc assembly in lab-scale bioreactors. Bacterial community structure was analyzed using denaturing gradient gel electrophoresis of RT-PCR amplified 16S rRNA. Fingerprinting of four parallel reactors, started with the same source communities added in different proportions, converged to patterns that were more similar than expected by chance, suggesting a deterministic selection in floc development. Evidence for neutral dynamics was suggested by the dependence of the rate of replacement of species (bacterial taxa-time relationships) on the number of available species in the source community. Further indication of stochastic dynamics was obtained by the application of the Sloan neutral model for prokaryotes. The fitting of the observed data to the model predictions revealed that the importance of the stochastic component increased with the size of the reservoir of species richness from which the community is drawn. Taken together, the results illustrate how both neutral and deterministic dynamics operate simultaneously in the assembly of the bacterial floc and show that the balance of the two depends on the richness of the source community.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Springer
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Community Assembly
dc.subject
Bacteria
dc.subject
16s Rrna Genes
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Wastewater Treatment
dc.subject.classification
Biotecnología Medioambiental
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Biotecnología del Medio Ambiente
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INGENIERÍAS Y TECNOLOGÍAS
dc.title
Balance of Neutral and Deterministic Components in the Dynamics of Activated Sludge Floc Assembly
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2019-07-10T19:04:26Z
dc.journal.volume
61
dc.journal.number
3
dc.journal.pagination
486-495
dc.journal.pais
Alemania
dc.journal.ciudad
Berlin
dc.description.fil
Fil: Ayarza, Joaquin M.. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones en Ingeniería Genética y Biología Molecular "Dr. Héctor N. Torres"; Argentina
dc.description.fil
Fil: Erijman, Leonardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones en Ingeniería Genética y Biología Molecular "Dr. Héctor N. Torres"; Argentina
dc.journal.title
Microbial Ecology
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://doi.org/10.1007/s00248-010-9762-y
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1007/s00248-010-9762-y
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