http://www.cnr.it/ontology/cnr/individuo/prodotto/ID49377

Changes in the composition of organic matter from prodeltaic sediments after a large flood event (Po River, Italy) (Articolo in rivista)

Type

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

Label

Changes in the composition of organic matter from prodeltaic sediments after a large flood event (Po River, Italy) (Articolo in rivista) (literal)

Anno

2008-01-01T00:00:00+01:00 (literal)

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

10.1016/j.gca.2008.02.005 (literal)

Alternative label

Tesi T. (a), Langone L. (a), Goni M.A. (b), Miserocchi S. (a), Bertasi F. (c) (2008)
Changes in the composition of organic matter from prodeltaic sediments after a large flood event (Po River, Italy)
in Geochimica et cosmochimica acta; Elsevier BV, Amsterdam (Paesi Bassi)
(literal)

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

Tesi T. (a), Langone L. (a), Goni M.A. (b), Miserocchi S. (a), Bertasi F. (c) (literal)

Pagina inizio

2100 (literal)

Pagina fine

2114 (literal)

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

DOI 10.1016/j.gca.2008.02.005 http://www.sciencedirect.com/ (literal)

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

72 (literal)

Rivista

Geochimica et cosmochimica acta (Rivista)

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

15 (literal)

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

8 (literal)

Note

ISI Web of Science (WOS) (literal)

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

(a) Istituto Scienze Marine CNRSede di Bologna, via P. Gobetti, 101 40129 Bologna, Italy (b) College of Oceanic and Atmospheric Science, Oregon State University, Corvallis, OR 97331, USA (c) Dipartimento di Biologia Evoluzionistica Sperimentale and Centro Interdipartimentale di Ricerca per le Scienze Ambientali, UNIBO, via S. Alberto 163 I-48100 Ravenna, Italy (literal)

Titolo

Changes in the composition of organic matter from prodeltaic sediments after a large flood event (Po River, Italy) (literal)

Abstract

The Po River (Italy) experienced a 100-year flood in October 2000. Surface sediments (0-1 cm) from cross-shelf transects were collected in the Po prodelta area (Adriatic Sea) in December 2000, in order to describe the distribution of organic matter (OM) along the main sediment dispersal system immediately after the flood event. Stations were subsequently reoccupied in October 2001 and April 2002. This sampling program provided a special opportunity to characterize the initial surficial flood deposit and the evolution of its associated OM over the course of 2 years. CuO oxidation, elemental, delta C-13, Delta C-14, and grain-size analyses were carried out to characterize the source, age, and spatial variability of sedimentary OM. Statistical analysis (PERMANOVA) was then applied to investigate temporal changes in different portions of the Po prodelta area. Isotopic and biomarker data suggest that the sedimentary OM in the flood deposit was initially dominated by aged (Delta C-14(Dec-00) = -298.7 +/- 56.3%,), lignin-poor OM (Lambda(Dec-00) = 1.96 +/- 0.33 mg/100 mg OC), adsorbed on the fine material (clay(Dec-00) = 72.1 +/- 4.8%) delivered by the flood. In the 2 years following the flood, post-depositional processes significantly increased the content of lignin (Lambda(Oct-01) = 2.19 +/- 0.51 mg/100 mg OC; Lambda(Apr-02) = 2.61 +/- 0.63 mg/100 mg OC); and coarse material (silt and sand), while decreasing the contributions from aged OC (Delta C-14(Oct-01) = -255.7 +/- 32.8%.; Delta C-14(Apr-02) = -213.2 +/- 30.4%.) and fine fraction (clay(Oct-01) = 54.8 +/- 9.5%; clay(Apr-02) = 44.6 +/- 13.3%). The major changes were observed in the northern and central portions of the prodelta. (literal)

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