Analisi della comunità macrobentonica nei piccoli fiumi vulcanici della Tuscia. Messa a punto di un sistema di classificazione in accordo con i principi della direttiva quadro sulle acque 2000/60/CE
Author(s)
Pace, Giorgio
Date Issued
February 12, 2009
Type
Doctoral Thesis
Abstract
The studies and analysis carried out by research institute, agencies and governmental authorities during last decade have been deeply focussed on conservation and restoration of aquatic ecosystem.
Moreover, regional and local recommendation, directives and laws have been set to protect water resources, improving the management of aquatic ecosystem.
At EU level, the reference directive is represented by the Water Framework Directive (WFD) 2000/60/EC, which provides guidelines for establishing a framework for Community action in the field of water policy.
At Italian level, implementation of WFD 2000/60/EC has been carried out by means of D.Lgs 152/06, even if lot of WFD technical issues has not yet been developed.
In such context, the study concerns the Tuscia’s macroinvertebrates communities and hydro-morphological, geological and chemical physic characterization of siliceous (volcanic) streams and the definition of a peculiar ecotype of keen interest both in EU and Italian region.
Our findings indicate a typical macroinvertebrates community with low biodiversity due to hydro morphological characters such as low microhabitat diversity and uniform riffle pool sequence; such biological and environmental features are increased by a large agricultural diffuse pollution.
The peculiarity of the study is that it is one of the first cases of implementation of WFD in Italy. It represents a local guideline for methodological and operative actions about the monitoring of freshwater, particularly on evaluation of ecological status through the analysis of macroinvertebrates community.
This methodological approach leads to the setting up of an existing classification system of ecological status in accordance to Water Framework Directive (WFD) 2000/60/EC based on the application of Multi Metric Index (ICMi – Intercalibration Common Metrics Index) defined during the EU Member States’ intercalibration process.
The results of the study enhance that the ICM permits a WFD compliant classification of ecological status and its implementation represents a significant improvement with respect to traditional analysis methods.
Additional information
Dottorato di ricerca in Ecologia e gestione delle risorse biologiche
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