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vol-2THE ECOI.OGY OF ZOOPLANKTON IN LAKE MARIUf
By
AwN A. S.AMAAN
Institute of Oceanography and Fisheries, Alexandria
ANWAR A. ALEEM
Department of Oceanography, Faculty of Science, University of Alexandria
INTRODUCfION
The distribution of zooplankton in Egyptian Delta lakes has received little
attention during the past. A list of some zooplankton organisms was given by
Faouzi (1937) and Steuer (1835, 1942). More recently, Elster & El-Hawsry
(1959) studied the population dynamics of Arctodiaptomus salillUS and Diaphanosoma excisum in the Nozha Hydrodrome which was a part of Lake Mariut,
EI-Hawary (1960) and Elster & Vollenweider (1961) enumerated the speciesof
zooplankton of Lake Mariut and Lake Edku. El-Maghraby et aZ (1963)have
also investigated zooplankton in Lake Menzala,
This present investigation has been undertaken in connection with the estimation of primary production of Lake Mariut with the view of assess the role
played by zooplankton in the food cycle of the lake. The ecologicalconditions
that may affect the distribution and periodicity of the zooplankton organisms
in such shallow lakes are also considered. The physical and chemical aspects
of Lake Mariut in addition to primary production has been previously published
(Aleem & Samaan, 1969, I & IT).
