engleski

Annual distribution of cladocerans in the open sea near Dubrovnik (South Adriatic)

The quantitative and qualitative composition and annual changes of abundance of cladocerans have been investigated. A weekly samplings were taken at the station one mile southwest from the island of Lokrum (sea depth 100 m) from 16 May 1995 till 9 December 1996. Five cladoceran species were found. A maximum density of 845 ind/m3 was recorded on 26 September 1996 with Penilia avirostris accounting for 97.6% of the total number. P. avirostris and Evadne tergestina display similar seasonal fluctuations in abundance.

Adriatic Sea; plankton; open sea; population dinamics

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