Type of protected area - Where it is located
Region: Trentino-Alto Adige
The Foci dellAvisio Biotope covers an area of about 100 hectares of river bed and hydrophilic wood, at the confluence of the Avisio torrent in the Adige; it affects the municipal areas of Lavis, Trento and Terlago.
Biotope Foci dellAvisio
The 89.4 km long Avisio stream originates from the Marmolada; just downstream from the Marmolada it is totally captured for hydroelectric purposes, as is its main tributary, Travignolo, which is diverted to another river basin. Downstream of the Stramentizzo dam, which moves the waters of the Avisio into the Adige basin, the Avisio sinks into a wild gorge and becomes a suggestive beauty river, substantially intact, perturbed only in the outflow of water from anthropogenic uses and disturbed by the quarries and from the porphyry landfills, which loom over the river bed, deteriorating its landscapes. In the final stretch, it exits the Valle di Cembra and flows into the Adige river: after the Serra di S.Giorgio, the torrential riverbed, for about 1.2 kilometers, still flows inserted into a valley furrow that is difficult to access; subsequently, in the conoid of Lavis calms down, expanding to 220 ml and supplies the faldada from which the Trento aqueduct draws. Finally in the last kilometer and a half it becomes an area of high naturalistic value (Foci dell’Avisio biotope), it flows into the Adige, with a width of over 900 m.
The Foci dellAvisio Biotope has a remarkable naturalistic value, as it represents one of the few areas, along the Adige valley floor, still not occupied by urban settlements and agricultural crops; moreover it constitutes one of the very few sections of the valley bottom water course not yet distorted by canalization works. Through environmental restorations, the naturalness of the area has been reconstructed with rare species of amphibians, such as the yellow-bellied lululone and the emerald toad. The narrow river belt is a stop on the migratory routes along the Adige valley; very interesting from a naturalistic point of view is the presence of ducks, geese, herons, as well as that of many sedentary species (wagtail, kingfisher, small courier and piro piro piccolo).
The provincial law (Autonomous Province of Trento) which established protected Biotopes (areas of significant naturalistic, scientific and cultural interest) is no. 14 of 23/06/1986. In 1987, 287 were identified: of these, 219 are defined as being of local interest and their establishment and management is a municipal responsibility (municipal biotopes); the 68 most important are instead classified of provincial interest (provincial biotopes), and are the responsibility of the Biotopes Office of the Parks and State Forests Service of the Province.
Information for the visit
Parks and State Forests Service of the Autonomous Province of Trento
North Business Center - Via Trener, 3
Tel. 0461 495833