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Sublittoral and profundal chironomid (Diptera) communities of Lake Vico (Central Italy): relationship to the trophic level

Published online by Cambridge University Press:  15 August 2009

M. Seminara ,
M. Bazzanti  and
C. Tamorri
M. Seminara
Affiliation:
Dipartimento di Biologia Animale e dell'Uomo, Università "La Sapienza", v. le dell'Università 32, 00185 Roma, Italia
M. Bazzanti
Affiliation:
Dipartimento di Biologia Animale e dell'Uomo, Università "La Sapienza", v. le dell'Università 32, 00185 Roma, Italia
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Abstract

Sublittoral and profundal chironomid community structure, depth distribution and relationship to the trophic level of the waters were investigated in Lake Vico (Central Italy) during 1985-1986. PCA analysis indicated a depth-dependent group of true profundal stations at 20, 30 and 40 m depths, characterized by Micropsectra, Procladius, Microtendipes, Tanytarsus and Paratendipes, and a group of 10 m stations, characterized by Cryptochironomus, Polypedilum bicrenatum gr., Cladopelma lateralis gr. and C. laccophila gr., representing the sublittoral features of this depth. In agreement with the chemical data, the chironomid community indicated a mesotrophic condition of Lake Vico, with a tendency towards an increasing trophic level in the deepest zone. A significant role in revealing future trophic changes in the lake may be attributed to the key-indicator Micropsectra.

Keywords

chironomidaecommunity structuredepth distributiontrophic levellakeItalychironomidésstructure des communautésdistribution selon la profondeurniveau trophiquelacItalie
Type
Research Article
Information
Annales de Limnologie - International Journal of Limnology , Volume 26 , Issue 2-3 , 1990 , pp. 183 - 193
Copyright
© Masson, 1990

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