Long-term trends of organic carbon and bacteria in the deep holo-oligomictic Lake Maggiore, Northern Italy (Comunicazione a convegno)

Type

• Prodotto della ricerca (Classe)
• Comunicazione a convegno (Classe)

Label

• Long-term trends of organic carbon and bacteria in the deep holo-oligomictic Lake Maggiore, Northern Italy (Comunicazione a convegno) (literal)

Anno

• 2010-01-01T00:00:00+01:00 (literal)

Alternative label

• Bertoni R. and Callieri C. (2010)
  Long-term trends of organic carbon and bacteria in the deep holo-oligomictic Lake Maggiore, Northern Italy
  in SIL international congress, Città del Capo Sud Africa
  (literal)

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

• Bertoni R. and Callieri C. (literal)

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

• Cape town Sud Africa, 15-20 agosto 2010 (literal)

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

• We analysed the long-term dynamics (1980-2007) of hypolimnetic and epilimnetic bacterial abundances and organic carbon concentrations, both dissolved (DOC) and particulate (POC), in Lake Maggiore (Northern Italy) included in the Southern Alpine Lakes Long-Term Ecological Research (LTER) site. During the 28 years of investigation, bacterial abundance and POC concentrations did not decrease with declining phosphorus concentrations, while DOC concentrations showed a pronounced decrease in the epi- and hypolimnion. We used the annual mean total lake heat content and total annual precipitation as climate-related variables, and in-lake total phosphorus as a proxy for trophic state. The model (Forward Stepwise Regression, FSR) showed that reduced anthropogenic pressure was more significant than climate change in driving the trend in DOC concentrations. The model also indicates that bacterial number variability was dependent on POC in the epilimnion and DOC in the hypolimnion. Bacterial dynamics in the hypolimnion mirrored the fluctuations observed in the epilimnion, but average cell abundance was three times lower. The composition of the microbial community showed a significant increase with depth of the percentage of Archaea on total DAPI counts and of cell biovolumes for rod and coccal morphotypes (literal)

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

• Bertoni R. and Callieri C. 2010. Long-term trends of organic carbon and bacteria in the deep holo-oligomictic Lake Maggiore, Northern Italy. SIL international congress, Cape town Sud Africa, 15-20 agosto 2010 (literal)

Titolo

• Long-term trends of organic carbon and bacteria in the deep holo-oligomictic Lake Maggiore, Northern Italy (literal)

Prodotto di

• Istituto per lo studio degli ecosistemi (ISE) (Istituto)
• Impatto dei cambiamenti globali sugli ecosistemi acquatici (TA.P02.014.002) (Modulo)

Autore CNR

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

Insieme di parole chiave

• Keywords of "Long-term trends of organic carbon and bacteria in the deep holo-oligomictic Lake Maggiore, Northern Italy" (Insieme di parole chiave)

Incoming links:

Autore CNR di

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

Prodotto

• Istituto per lo studio degli ecosistemi (ISE) (Istituto)
• Impatto dei cambiamenti globali sugli ecosistemi acquatici (TA.P02.014.002) (Modulo)

Insieme di parole chiave di

• Keywords of "Long-term trends of organic carbon and bacteria in the deep holo-oligomictic Lake Maggiore, Northern Italy" (Insieme di parole chiave)