Artículo
Alternative states drive the patterns in the bacterioplankton composition in shallow Pampean lakes (Argentina)
Llames, Maria Eugenia del Rosario
; del Giorgio, Paul; Zagarese, Horacio Ernesto
; Ferraro, Marcela Andrea; Izaguirre, Irina
Fecha de publicación:
01/2013
Editorial:
Wiley
Revista:
Environmental Microbiology Reports
ISSN:
1758-2229
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
We assessed the influence of environmental factors in shaping the free-living bacterial community structure in a set of shallow lakes characterized by contrasting stable state patterns (clear-vegetated, inorganic-turbid and phytoplankton-turbid). Six temperate shallow lakes from the Pampa Plain (Argentina) were sampled over an annual cycle, and two fingerprinting techniques were applied: a 16S rDNA analysis was performed using denaturing gradient gel electrophoresis (DGGE) profiles, and a 16S–23S internally transcribed spacer region analysis was conducted by means of automated ribosomal intergenic spacer analysis (ARISA) profiles. Our results show that the steady state that characterized the different shallow lakes played a major role in structuring the community: the composition of free-living bacteria differed significantly between clear-vegetated, inorganic-turbid and phytoplankton-turbid shallow lakes. The state of the system was more important in determining these patterns than seasonality, geographical location or degree of hydrological connectivity. Moreover, this strong environmental control was particularly evident in the pattern observed in one of the lakes, which shifted from a clear to a turbid state over the course of the study. This lake showed a directional selection of species from a typical clearlike to a turbid-like community. The combined DGGE/ ARISA approach revealed not only broad patterns among different alternative steady states, but also more subtle differences within different regimes.
Palabras clave:
Bacterioplankton
,
Assemblages
,
Alternative States
,
Shallow Lakes
Archivos asociados
Licencia
Identificadores
Colecciones
Articulos(CCT - LA PLATA)
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - LA PLATA
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - LA PLATA
Articulos(IEGEBA)
Articulos de INSTITUTO DE ECOLOGIA, GENETICA Y EVOLUCION DE BS. AS
Articulos de INSTITUTO DE ECOLOGIA, GENETICA Y EVOLUCION DE BS. AS
Articulos(IIB-INTECH)
Articulos de INST.DE INVEST.BIOTECNOLOGICAS - INSTITUTO TECNOLOGICO CHASCOMUS
Articulos de INST.DE INVEST.BIOTECNOLOGICAS - INSTITUTO TECNOLOGICO CHASCOMUS
Citación
Llames, Maria Eugenia del Rosario; del Giorgio, Paul; Zagarese, Horacio Ernesto; Ferraro, Marcela Andrea; Izaguirre, Irina; Alternative states drive the patterns in the bacterioplankton composition in shallow Pampean lakes (Argentina); Wiley; Environmental Microbiology Reports; 5; 2; 1-2013; 310-321
Compartir
Altmétricas