Auteri

Belgrano

Buia

Bundy

C. Savenkoff

Carrer

Celussi

Christensen

Coll

Costanza

Cucco

D. Brigolin

Danovaro

F. Pranovi

Facca

Franco

Franzoi

Gačić

Jørgensen

Kones

Leguerrier

Libralato

Lindeman

M. Zucchetta

Morissette

P. Franzoi

P. Torricelli

Pellizzato

Platt

Plus

Pranovi

R. Pastres

Savenkoff

Sfriso

Solidoro

Sorokin

Tagliapietra

Ulanowicz

Venice Water Authority

Vézina

Winberg

BRIGOLIN D.

SAVENKOFF C.

ZUCCHETTA M.

PRANOVI F.

FRANZOI P.

TORRICELLI P.

PASTRES R.

Name not available

An inverse model for the analysis of the Venice lagoon food web

A steady-state model of the Venice lagoon food web was constructed, based on a comprehensive set of data, which were collected in the years 2001-2005. Energy flows were estimated by means of an inverse methodology of constrained optimization based on the Minimum Norm criterion, i.e. on the minimization of both the sum of squares of the residuals and of the sum of squares of energy flows. The solution was constrained by a set inequalities, which were derived from general eco-physiological knowledge and site specific data on energy flows. The trophic network was represented by thirty-two nodes, including single-species compartments for the species of high economical or ecological relevance. Mass balance equations were weighted, in order to obtain meaningful results in presence of large differences, up to 5 orders of magnitude, among biomasses. A perturbation technique was applied, with the purpose of reducing the risk of finding solutions heavily affected by the set of constraints and of obtaining a more robust representation of the energy flows. The main patterns of energy flow are consistent with those obtained in previous attempts at modelling the Venice lagoon food web. Micro- and macro-phytobenthos account for the largest fraction of the primary production. Energy is then transferred towards higher trophic levels by means of two main pathways: the recycling of dead biomass through the detritus compartment and the direct consumption by grazers. The first pathway is the most important and accounts for approximately two/thirds of the energy transferred to the second trophic level. © 2011 Elsevier B.V

BRIGOLIN, Daniele

ZUCCHETTA, MATTEO

PRANOVI, Fabio

FRANZOI, Piero

TORRICELLI, Patrizia

PASTRES, Roberto

Archivio istituzionale della ricerca - Università degli Studi di Venezia Ca' Foscari

Archivio istituzionale della ricerca - Università IUAV di Venezia

Crossref

Ecological Modelling

Archivio Ricerca Ca'Foscari

https://iris.unive.it/bitstream/10278/25879/1/Brigolin%20et%20al_Ecol%20Mod_11.pdf

An inverse model for the analysis of the Venice lagoon food web

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Archivio istituzionale della ricerca - Università degli Studi di Venezia Ca' Foscari

Archivio istituzionale della ricerca - Università IUAV di Venezia

Crossref

Archivio Ricerca Ca'Foscari