http://www.cnr.it/ontology/cnr/individuo/prodotto/ID49331

Bioturbation in the Venice Lagoon: Rates and relationship to organisms (Articolo in rivista)

Type

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

Label

Bioturbation in the Venice Lagoon: Rates and relationship to organisms (Articolo in rivista) (literal)

Anno

2007-01-01T00:00:00+01:00 (literal)

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

10.1016/j.actao.2007.02.003 (literal)

Alternative label

Gerino M (a), Frignani M (b), Mugnai C (b), Bellucci L.G (b), Prevedelli D (c), Valentini A. (c), Castelli A (d), Delmotte S. (a), Sauvagea S. (a) (2007)
Bioturbation in the Venice Lagoon: Rates and relationship to organisms
in Acta oecologica (Montrouge)
(literal)

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

Gerino M (a), Frignani M (b), Mugnai C (b), Bellucci L.G (b), Prevedelli D (c), Valentini A. (c), Castelli A (d), Delmotte S. (a), Sauvagea S. (a) (literal)

Pagina inizio

14 (literal)

Pagina fine

25 (literal)

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

doi:10.1016/j.actao.2007.02.003 http://www.sciencedirect.com/science/journal/1146609X (literal)

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

32(1) (literal)

Rivista

Acta oecologica (Rivista)

Note

ISI Web of Science (WOS) (literal)

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

(a) UMR CNRS/UPS/INP 5245 EcoLab, Laboratoire d'Ecologie Fonctionnelle, 29 Rue J. Marvig, 31055 Toulouse Cedex 4, France (b) CNR-Istituto di Scienze Marine, Sede di Bologna - Geologia Marina, Via Gobetti 101, 40129 Bologna, Italy (c) Dipartimento di Biologia Animale, Università di Modena e Reggio Emilia, Via Campi 213/d, 41100 Modena, Italy (d) Dipartimento di Scienze dell'Uomo e dell'Ambiente, Università di Pisa, Via delle Belle Torri 18, 56127 Pisa, Italy (literal)

Titolo

Bioturbation in the Venice Lagoon: Rates and relationship to organisms (literal)

Abstract

Experiments were carried out during autumn 1998 and spring 1999 at four selected sites in the Venice Lagoon in order to estimate the major bioturbation modes, and for quantitative analysis of the contribution of various taxa to these modes. Fluorescent sediment particles (63350 micrometres) were supplied as a tracer pulse input at the sediment surface. Tracer depth profiles obtained after 15 and 20 days were simulated with a diffusion-advection-non-local transport model. This allowed the rates of biodiffusion, bioadvection, and RS, a non-local transport coefficient to account for the displacement of sediment by regeneration, to be estimated. A combination of fresh water and marine organisms were responsible for the recorded sediment reworking, which was dominated by both types of non-local transports (conveying and regeneration). Considering all the sampling sites and seasons, biodiffusion ranged from 0.87 +/-0.02 to 3.17 +/-0.92 sq cm/y-1, bioadvection from 0.12 +/-0.09 to 27.41 +/-2.47 cm/y-1 and RS from 0.00 +/-0.00 to 5.47 +/-1.09 g/cm-2/y-1 (mean +/-SE, n=3). A multiple regression analysis was applied to identify the contribution from individual species to sediment transport types. Biodiffusion resulted from the combined activity of polychaetes such as Spio decoratus and meiobenthic harpacticoïd copepods, while the polychaete Hediste diversicolor was mainly responsible for regeneration. Conveying processes were driven by another polychaete, Capitella capitata. Despite heterogeneity in the benthic community composition, biodiffusion and regeneration rates did not vary significantly between sites or season, with only bioadvection found to be higher in spring than in autumn. (literal)

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