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Macroinvertebrates and biomonitoring of River Judrio Friuli-Venezia Giulia, north-eastern Italy Macroinvertebrati biomonitoraggio del fiume Judrio nel Friuli-Venezia Giulia Italia, nord-orientale


Gortania Atti del Museo Friulano di Storia Naturale, 20: 133-166
Macroinvertebrates and biomonitoring of River Judrio Friuli-Venezia Giulia, north-eastern Italy Macroinvertebrati biomonitoraggio del fiume Judrio nel Friuli-Venezia Giulia Italia, nord-orientale
The macroinvertebrate fauna of river Judrio (Friuli-Venezia Giulia, North-eastern Italy) is discussed. Samples were collected in thirteen sites along the river in September 1994, December 1995 and May 1996. The composition of the river's communities was next considered, together with their variations through the year Finally, the quality of the stream's water was estimated, using two biotic indices, a modified version of the Extended Biotic Index (GHETTI, 1986) created by WOODIWISS (1978), and the Indice a Rapporto (Ratio Index; STOCH, 1986). On the whole, the environmental situation of the Judrio appears to be good from the town Venco upstream; while from this point downstream, some effects of pollution become increasingly noticeable.


Accession: 038391629



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