DYNAMICS OF BENTHIC BACTERIAL COMMUNITY IN A RIVERINE ENVIRONMENT SUBJECT TO HYDROLOGICAL FLUCTUATIONS (RIVER MULARGIA, ITALY) (Articolo in rivista)

Type

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

Label

• DYNAMICS OF BENTHIC BACTERIAL COMMUNITY IN A RIVERINE ENVIRONMENT SUBJECT TO HYDROLOGICAL FLUCTUATIONS (RIVER MULARGIA, ITALY) (Articolo in rivista) (literal)

Anno

• 2010-01-01T00:00:00+01:00 (literal)

Alternative label

• ZOPPINI A., AMALFITANO S., FAZI S., PUDDU A. (2010)
  DYNAMICS OF BENTHIC BACTERIAL COMMUNITY IN A RIVERINE ENVIRONMENT SUBJECT TO HYDROLOGICAL FLUCTUATIONS (RIVER MULARGIA, ITALY)
  in Hydrobiologia (The Hague. Print)
  (literal)

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

• ZOPPINI A., AMALFITANO S., FAZI S., PUDDU A. (literal)

Pagina inizio

• 37 (literal)

Pagina fine

• 51 (literal)

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

• 657 (literal)

Rivista

• Hydrobiologia (Rivista)

Note

• ISI Web of Science (WOS) (literal)

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

• Water Research Institute (IRSA-CNR), Via Salaria Km 29.300, CP 10, 00015 Monterotondo, Rome, Italy (literal)

Titolo

• DYNAMICS OF BENTHIC BACTERIAL COMMUNITY IN A RIVERINE ENVIRONMENT SUBJECT TO HYDROLOGICAL FLUCTUATIONS (RIVER MULARGIA, ITALY) (literal)

Abstract

• Temporary rivers are characterized by recurrent dry phases, and global warming will stress their hydrology by amplifying extreme events. Microbial degradation and transformation of organic matter (OM) in riverbed sediment are key processes with regard to carbon and nutrient fluxes. In this study, we describe structural and functional changes of benthic microbial communities in a riverine environment subject to hydrological fluctuation. Sampling was carried out in the outlet section of the Mulargia River (Sardinia, Italy) under various water regimes, including one flood event. Overall, sediments were characterized by low bacterial cell abundance (range 0.6-1.8 9 109 cell g-1) as a consequence of their low nutrient and OM concentrations. No major differences were found in the community composition. Alpha-Proteobacteria dominated during the whole year (range 21-30%) followed by Beta-Proteobacteria, Gamma-Proteobacteria, and Cytophaga-Flavobacteria which always contributed %. Planctomycetes and Firmicutes were found in smaller amounts (%). In spring, when the highest total organic carbon content was also detected (0.42% w/w), both bacterial abundance and C production (BCP, 170 nmol C h-1 g-1) reached relatively high values.During the flood event, an increase in BCP and the highest values of community respiration (CR, 74 nmol C h-1 g-1) were observed. Moreover, most of the extracellular enzyme activities (EEA) changed significantly during the flood. The variation of the water flowitself can explain part of these changes and other factors also come into play. The presence of different patterns of functional parameters could suggest that the quality of the OM could be the major driving force in nutrient flux. (literal)

Prodotto di

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

Autore CNR

• STEFANO AMALFITANO (Unità di personale interno)
• 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)
• ALBERTO PUDDU (Unità di personale interno)
• STEFANO FAZI (Unità di personale interno)
• STEFANO AMALFITANO (Unità di personale interno)

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

• Hydrobiologia (Rivista)