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Fitosociologia numero 44 (1)

pag. 17-31: Valutazione della qualità degli habitat della costa sedimentaria (Laguna di Marano e Grado) e della costa a falesie (Costiera triestina): applicazione del metodo EsAmbI

M. Tomasella, M. Vidali, G. Oriolo, L. Poldini, S. Comin & R. Giorgi1

Università degli Studi di Trieste, Dipartimento di Biologia, Via L. Giorgieri 10, I-34127, Trieste; e-mail: vidali@univ.trieste.it

1Regione Friuli Venezia Giulia, Servizio di Valutazione di Impatto Ambientale, Via Giulia 75/1, I-34126, Trieste; e-mail: rossana.giorgi@regione.fvg.it

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abstract

Appraisal of habitat quality of sedimentary coast (Grado and Marano Lagoon) and cliff coast (Costiera triestina): EsAmbI method application. Within a cooperation between the Department of Biology (University of Trieste) and the regional administration of Friuli Venezia Giulia a catalogue of habitats, a catalogue of indicators of the environmental state and a appraisal model of Value (VAE) and Sensibility (SEA) were defined. The list of the habitats is based on the phytosociological method but it also makes reference to “Corine Biotopes”, to “EUNIS” that and to the Annex of the Directive “Habitats” (43/92). These habitats can be considered the base of  Environmental Impact Assessment, also in Natura 2000 sites (Art. 6, 43/92), at the scale of 1:10.000. The model, which considered several parameters of VAE and SEA, is applied both to floristic and habitat level. All the considered parameters are opportunely synthesized through the a modified index of Story-Villa. The application of the method in two sensitive areas of the coastal system of Friuli Venezia Giulia (“Grado and Marano Lagoon” and “Costiera Triestina”) allowed a detail analysis on Value (VAE) and Sensibility (SEA), based on the flora and on the intrinsic properties of habitats.

keywords

environmental quality, Friuli VG (NE Italy), habitat, sensibility, value model