Invertebrate Remains from Lago Di Vico
by
Monica Andrade-Morraye
Faculty of Agrary and Veterinary Sciences, UNESP, Jaboticabal, Brazil
Coauthors: Odete Rocha, Suzanne Leroy

Invertebrate remains of Cladocera (Crustacea) and Chironomidae (Diptera) were studied on lacustrine sediments from a composed sequence of three cores taken at the littoral of the Vico Lake (Latium, Italy). The sequences reached 16 m depth and were sectioned at intervals of 0,50 m . The time span covers a period from 95,000 to 10,000 years B.P. The Chydoridae dominated the zooplankton remains, reflecting the dominance of a littoral community. The Chironomidae assemblage indicates that the lake has been mesotrophic during that interval. Along the sequence, there were many fluctuations in the relative abundance of invertebrate remains and species replacements, which can be associated to changes on the water level of the lake and temperature variation. In general, invertebrate remains were less abundant during periods of glacial climate, with the ocorrence of coldstenotermic genera and presented major diversity on periods of climatic melioration, inferred by pollen stratigraphy.

Date received: June 29, 2005

Copyright © 2005 by the author(s). The author(s) of this document and the organizers of the conference have granted their consent to include this abstract in Atlas Conferences Inc. Document # caqy-11.