Lake Maggiore (N. Italy) trophic history: fossil diatom, plant pigments, chironomids and comparison with long-term limnological data (Articolo in rivista)

Type

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

Label

• Lake Maggiore (N. Italy) trophic history: fossil diatom, plant pigments, chironomids and comparison with long-term limnological data (Articolo in rivista) (literal)

Anno

• 2004-01-01T00:00:00+01:00 (literal)

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

• 10.1016/S1040-6182(03)00082-X (literal)

Alternative label

• Marchetto A., Lami A., Musazzi S., Masaferro J., Langone L., Guilizzoni P. (2004)
  Lake Maggiore (N. Italy) trophic history: fossil diatom, plant pigments, chironomids and comparison with long-term limnological data
  in Quaternary international
  (literal)

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

• Marchetto A., Lami A., Musazzi S., Masaferro J., Langone L., Guilizzoni P. (literal)

Pagina inizio

• 97 (literal)

Pagina fine

• 110 (literal)

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

• 113 (literal)

Rivista

• Quaternary international (Rivista)

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

• The record of Human /Climate interaction in Lake Sediments (literal)

Note

• ISI Web of Science (WOS) (literal)

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

• (a) CNR Istituto per lo Studio degli Ecosistemi, Sezione di Idrobiologia ed Ecologia delle Acque Interne, Largo V. Tonolli 50, 28922, Verbania Pallanza, Italy (b) CONICET, Bariloche, Argentina (c) CNR Istituto per la Geologia Marina, Via Gobetti 101, 40129, Bologna, Italy (literal)

Titolo

• Lake Maggiore (N. Italy) trophic history: fossil diatom, plant pigments, chironomids and comparison with long-term limnological data (literal)

Abstract

• The availability of long-term series of chemical and biological data and the eutrophication/oligotrophication history of Lake Maggiore allows an attempt to correlate the registered changes with sedimentary records in several sediment cores. Documentary and palaeolimnological data were used to calibrate two important suites of sedimentary indicators of phytoplankton, diatoms and algal pigments. Diatom assemblages in the sediment cores precisely reflect the pelagic diatom development for approximately the last century. Prediction of total algal biomass from the profile of the ubiquitous â-carotene and some algal groups in certain period of lake development (e.g. diatoms, Cryptophyta, cyanobacteria) was good, whereas the comparison of taxa-specific carotenoids and algal biomass standing stocks (as cell biovolume) in some case revealed poor correspondence. Selective carotenoid losses, taxa production, and mechanisms controlling pigment sedimentation are factors that biased the comparison. However, pigment concentrations and algal biovolumes are different units but equally valid. The use of fossil pigments complements other studies and provides more detailed information on algal development. A sub-fossil chironomid profile agrees well with the general trophic reconstruction as inferred from the pigment and diatom data, adding more details on changes in littoral substratum, water-level fluctuation and flood events. Models to infer primary productivity and total phosphorus concentration in lake water from sedimentary pigments and diatom assemblages are tested: in the case of the TP reconstruction, reliable results were obtained in this case for the period of high trophic state and for the last decade. During the recovery phase of the 1980s, unexpected high abundance of Stephanodiscus minutulus leads to strong overestimation of TP concentrations. Similarly, the reconstructed primary productivity only disagrees with the experimental data for some years in the last decade. Sensitivity of the sedimentary pigment model as well as the relatively reduced sampling dates likely explains this discrepancy. Similarities are also evident in the temporal diatom assemblage variations of an additional three sub-alpine Italian lakes. As well, the palaeolimnological reconstruction for Lake Maggiore parallels that for Lake Constance, another large sub-alphine lake located north of the Alps. (literal)

Prodotto di

• Struttura dei margini continentali, emissione dei fluidi attraverso di essi, e impatto sugli ecosistemi (TA.P02.028.002) (Modulo)
• Marine science institute (ISMAR) (Istituto)
• 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

• ANDREA LAMI (Unità di personale interno)
• LEONARDO LANGONE (Persona)
• PIERO GUILIZZONI (Persona)
• ALDO MARCHETTO (Unità di personale interno)

Insieme di parole chiave

• Parole chiave di "Lake Maggiore (N. Italy) trophic history: fossil diatom, plant pigments, chironomids and comparison with long-term limnological data" (Insieme di parole chiave)

Incoming links:

Autore CNR di

• ANDREA LAMI (Unità di personale interno)
• ALDO MARCHETTO (Unità di personale interno)
• PIERO GUILIZZONI (Persona)
• LEONARDO LANGONE (Persona)

Prodotto

• Istituto per lo studio degli ecosistemi (ISE) (Istituto)
• Marine science institute (ISMAR) (Istituto)
• Struttura dei margini continentali, emissione dei fluidi attraverso di essi, e impatto sugli ecosistemi (TA.P02.028.002) (Modulo)
• 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

• Quaternary international (Rivista)

Insieme di parole chiave di

• Parole chiave di "Lake Maggiore (N. Italy) trophic history: fossil diatom, plant pigments, chironomids and comparison with long-term limnological data" (Insieme di parole chiave)