RESPONSES OF BENTHIC BACTERIA TO EXPERIMENTAL DRYING IN SEDIMENTS FROM MEDITERRANEAN TEMPORARY RIVERS (Articolo in rivista)

Type

• Prodotto della ricerca (Classe)
• Articolo in rivista (Classe)

Label

• RESPONSES OF BENTHIC BACTERIA TO EXPERIMENTAL DRYING IN SEDIMENTS FROM MEDITERRANEAN TEMPORARY RIVERS (Articolo in rivista) (literal)

Anno

• 2008-01-01T00:00:00+01:00 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi

• 10.1007/s00248-007-9274-6 (literal)

Alternative label

• AMALFITANO S., FAZI S., ZOPPINI A., BARRA CARACCIOLO A., GRENNI P., PUDDU A. (2008)
  RESPONSES OF BENTHIC BACTERIA TO EXPERIMENTAL DRYING IN SEDIMENTS FROM MEDITERRANEAN TEMPORARY RIVERS
  in Microbial ecology
  (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

• AMALFITANO S., FAZI S., ZOPPINI A., BARRA CARACCIOLO A., GRENNI P., PUDDU A. (literal)

Pagina inizio

• 270 (literal)

Pagina fine

• 279 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

• 55 (literal)

Rivista

• Microbial ecology (Rivista)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo

• 2 (literal)

Note

• ISI Web of Science (WOS) (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

• Water Research Institute (IRSA-CNR), Via Reno 1, 00198 Rome, Italy (literal)

Titolo

• RESPONSES OF BENTHIC BACTERIA TO EXPERIMENTAL DRYING IN SEDIMENTS FROM MEDITERRANEAN TEMPORARY RIVERS (literal)

Abstract

• In the semiarid Mediterranean regions, water scarcity represents a common physiological stress for microbial communities residing in river sediments. However, the effect of drying has not yet adequately been evaluated when analyzing riverine microbiological processes. The bacterial community structure (abundance, biomass, composition) and functioning (carbon production, live cell percentage) were assessed during experimental desiccation in microcosms with sediments from different Mediterranean temporary rivers (Tagliamento, Krathis, Mulargia, Pardiela). Our results showed that the overall responses to drying of the bacterial community were independent from sediment origin and strictly related to water content. During desiccation, a prompt decline (up to 100%) of the initial bacterial carbon production was followed by a slower decrease in abundance and biomass, with an overall reduction of 74% and 78%, respectively. By the end of the experiment, live cells were still abundant but depressed in their main metabolic functions, thus resulting in a drastic increase in the community turnover time. Only 14% of the initial live cell biomass was available in dry sediments to immediately start the reactivation of the aquatic microbial food web after the arrival of new water. Community composition analysis showed a relative increase in alpha- and beta-Proteobacteria, when passing from wet to dry conditions. Our results suggest that the occurrence of drought events could affect carbon cycling through the freshwater microbial compartment, by temporarily limiting microbial mineralization and altering bacterial community structure. (literal)

Prodotto di

• Water research institute (IRSA) (Istituto)
• Ruolo di comunità microbiche nella degradazione della sostanza organica e nella circolazione del carbonio nei sistemi acquatici (TA.P02.002.003) (Modulo)

Autore CNR

• ANNA BARRA CARACCIOLO (Persona)
• STEFANO AMALFITANO (Unità di personale interno)
• PAOLA GRENNI (Unità di personale esterno)
• STEFANO FAZI (Unità di personale interno)
• ALBERTO PUDDU (Unità di personale interno)
• ANNAMARIA ZOPPINI (Unità di personale interno)

Incoming links:

Prodotto

• Water research institute (IRSA) (Istituto)
• Ruolo di comunità microbiche nella degradazione della sostanza organica e nella circolazione del carbonio nei sistemi acquatici (TA.P02.002.003) (Modulo)

Autore CNR di

• ANNAMARIA ZOPPINI (Unità di personale interno)
• PAOLA GRENNI (Unità di personale esterno)
• ALBERTO PUDDU (Unità di personale interno)
• ANNA BARRA CARACCIOLO (Persona)
• STEFANO FAZI (Unità di personale interno)
• STEFANO AMALFITANO (Unità di personale interno)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi

• Microbial ecology (Rivista)