✦ LIBER ✦

Abundance and diversity of planktonic rotifers in the Po River

✍ Scribed by I. Ferrari; A. Farabegoli; R. Mazzoni

Publisher: Springer
Year: 1989
Tongue: English
Weight: 457 KB
Volume: 186-187
Category: Article
ISSN: 1573-5141
DOI: 10.1007/bf00048913

No coin nor oath required. For personal study only.

✦ Synopsis

Zooplankton samples from the middle reach of the Po River were collected daily from 27 July to 24 August 1988 from a station located near Viadana. Changes in the biocoenosis structure were analyzed in relation to variations in flow rate. Rotifers accounted for more than 99% of the total zooplankton (protozoans excluded) in every sample. The dominant species were Brachionus calyciflorus, Brachionus bennini, Brachionus budapestinensis and Epiphanes macrourus. Under scanty flow conditions, the taxocoenosis showed marked stability. An increase in flow rate acts as a disturbance factor leading to a significant decrease in both total density and dominance.

Ciliophora

Actinobolina radians Cinetochilum margaritaceum Codonella cratera Coleps incurvus Cyclidium glaucoma Dileptus falciformis

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