G. it. Ent., 5 (24): 1-21
April 30, 1990
Eco-profili d'ambiente delle coleotterofauna di Romagna. 5.
I fiumi della pianura
di
ETTORE CONTARINI
Abstract - Ecological monographs on the Coleoptera of Romagna. 5. The rivers of the plain - The chief rivers of the plain in Romagna (northern Italy) were intensely investigated by the author for 20 years, to collect data on the communities of Coleoptera inhabiting their beds. To prevent floods all rivers are provided with high embarkments: from their tops down to the stream, as a rule, five different kinds of habitat are present. 1. The xeric, steppic upper areas; 2. The mesofil habitat of the banks only periodically flooded; 3. The Salicetum, bordering with shrubs the ordinary bed of the river; 4. The wet edges of clay and sand; 5. The permanently flooded areas and the stream. Different communities of Coleoptera inhabit the five habitats. The typical associations are outlined and new faunistic and ecological data are given for several taxa of Coleoptera.
