Picocyanobacteria photosynthetic efficiency under Daphnia grazing pressure (Articolo in rivista)

Type

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

Label

• Picocyanobacteria photosynthetic efficiency under Daphnia grazing pressure (Articolo in rivista) (literal)

Anno

• 2004-01-01T00:00:00+01:00 (literal)

Alternative label

• Callieri C., Balseiro E.(1), Bertoni R., Modenutti B.(1) (2004)
  Picocyanobacteria photosynthetic efficiency under Daphnia grazing pressure
  in Journal of plankton research
  (literal)

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

• Callieri C., Balseiro E.(1), Bertoni R., Modenutti B.(1) (literal)

Pagina inizio

• 1471 (literal)

Pagina fine

• 1477 (literal)

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

• 26 (literal)

Rivista

• Journal of plankton research (Rivista)

Note

• ISI Web of Science (WOS) (literal)

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

• (1)CONICET, Univ. Nacional del Comahue, Lab. de Limnologia, Bariloche, Argentina (literal)

Titolo

• Picocyanobacteria photosynthetic efficiency under Daphnia grazing pressure (literal)

Abstract

• Daphnia hyalina was used to assess the impact of zooplankton on the photosynthetic activity of picocyanobacteria. A phosphorus-limited laboratory system was designed, composed of 3µm filtered lake water with natural assemblages to which non-axenic Synechococcus sp. was added. Different treatments with and without Daphnia were arranged; aliquots from these were sampled during 3-day incubations to measure changes in picocyanobacterial net primary production (NPP), excreted organic carbon (EOC), dissolved organic carbon (DOC) and photosynthetic parameters (photosynthesis- irradiance response curves). Bacterial number, biovolume and production were measured in both the treatment and control to evaluate possible bacterial interferences. A significant increase of picocyanobacterial photosynthesis and efficiency (2- and 3-fold increase of Pmax and alfa respectively) was observed in bottles supplemented with Daphnia, whereas cell-specific bacterial production did not. At the same time, the EOC:NPP ratio was 2.3 times lower with the grazer. This result clearly shows the impact of P recycling mediated by a grazer on picocyanobacterial growth and production. (literal)

Prodotto di

• Istituto per lo studio degli ecosistemi (ISE) (Istituto)
• Uso della paleolimnologia come strumento per lo studio del paleoclima e dell'evoluzione climatica (TA.P02.005.002) (Modulo)

Autore CNR

• ROBERTO BERTONI (Unità di personale interno)
• CRISTIANA CALLIERI (Persona)

Incoming links:

Autore CNR di

• CRISTIANA CALLIERI (Persona)
• ROBERTO BERTONI (Unità di personale interno)

Prodotto

• Istituto per lo studio degli ecosistemi (ISE) (Istituto)
• Uso della paleolimnologia come strumento per lo studio del paleoclima e dell'evoluzione climatica (TA.P02.005.002) (Modulo)

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

• Journal of plankton research (Rivista)