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Mixed trophic impact and transfer efficiency as indicators of species role and ecosystem state Mixed trophic impact e transfer efficiency come indicatori del ruolo di una specie e dello stato dellecosistema






Biologia Marina Mediterranea, 112: 255-264 (Parte Prima)

Mixed trophic impact and transfer efficiency as indicators of species role and ecosystem state Mixed trophic impact e transfer efficiency come indicatori del ruolo di una specie e dello stato dellecosistema

The analysis of Mixed Trophic Impact and Transfer Efficiency was carried out by using four different models of the Venice Lagoon, representing the ecosystem by means of a trophic web of 27 compartments. Some compartments are subjected to fishing activities, here defined as artisanal fishery and mechanical clam harvesting. The Mixed Trophic Impact allows to rank all the compartments of the trophic web on the basis of the global impact that a compartment exerts on all the others of the system. The computation of the global impact per unit of biomass allows us to identify groups which play a key role in the studied ecosystem (e.g. Tapes philippinarum is identified as a wasp-waist species and the zooplankton as a keystone group). The analysis of the Transfer Efficiency has evidenced that the Manila clam contributes significantly in the increasing of the efficiency of energetic transfers within the trophic web.


Accession: 038416554



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Anonymous, 2004: Mixed trophic impact e transfer efficiency come indicatori del ruolo di una specie e dello stato dell'ecosistema. The analysis of Mixed Trophic Impact and Transfer Efficiency was carried out by using four different models of the Venice Lagoon, representing the ecosystem by means of a trophic web of 27 compartments. Some compartments are subjected to fishing a...

Libralato, S.; Pranovi, F.; Raicevich, S.; Giovanardi, O., 2004: Mixed trophic impact and transfer efficiency as indicators of species role and ecosystem state. The analysis of Mixed Trophic Impact and Transfer Efficiency was carried out by using four different models of the Venice Lagoon, representing the ecosystem by means of a trophic web of 27 compartments. Some compartments are subjected to fishing a...

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