Plankton of Lyell Reservoir, New South Wales

T. Kobayashi

Research output: Contribution to journalArticle

Abstract

From August 1986 to September 1987, the plankton of Lyell Reservoir near Lithgow, N.S.W. was studied with special reference to species composition, seasonal changes, interaction between phytoplankton and zooplankton, and the effect of artificial aeration.

Forty-five taxa of phytoplankton were identified with species of Cyclotella, Stephanodiscus , Melosira, Volvox and Microcystis dominant. Among the zooplankton 10 rotifers, 5 copepods and 12 cladocerans were recorded, dominated by Ceriodaphnia sp., Daphnia lumholtzi, Boeckella triarticulata and Calamoecia lucasi. Two morphs of D. carinata coexisted.

The microcrustacean zooplankton fed mainly on Chroococcus, Oocystis, Melosira and unicellular centric diatoms: diatoms were well digested, but gelatinous algae remained intact. Microcystis was ingested by B. triarticulata.

Artificial aeration did not prevent a bloom of Microcystis, and a concomitant change in the abundance of cladocerans was not necessarily causally related.
Original languageEnglish
Pages (from-to)245-261
Number of pages17
JournalProceedings of the Linnean Society of New South Wales
Volume113
Issue number3
Publication statusPublished - 1992
Externally publishedYes

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