La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Microdistribution of chironomids (Diptera : Chironomidae) in Alpine streams: an autoecological perspective
Auteurs :	V. Lencioni, Auteur ; B. Rossaro, Auteur
Type de document :	Article
Dans :	Hydrobiologia (533 JAN 15 2005)
Article en page(s) :	61-76
Résumé :	Chironomid communities from three glacial and three non-glacial high mountain streams in three Alpine river basins were analyzed (Conca, Niscli, Cornisello, NE Italy, 46degrees N, 10degrees E). Eighteen sampling reaches belonging to five stream types (kryal, subkryal, glacio-rhithral, kreno-rhithral, outlet) were investigated. At each reach, geomorphological, physical, chemical and biological data were collected. Field surveys were carried out during three periods per year from 1996 to 1998: immediately after spring snowmelt, in midsummer and in early autumn. In all, 439 zoobenthos samples were collected from 5 to

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