الفهرس 
Material and MethodsOnly 14 pages are availabe for public view
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Abstract
Phytoplankton succession and primary productivity relevant to the physcio-chemical characters
of the wastewater treatment plant in Ataka, Suez, Egypt, depending on stabilization ponds method
were studied monthly over 13 months from January 1997 till Janua1y 1998. The ponds were typically
eutrophic and characterised by high nutrients load resulting in high phytoplankton density
attaining the maximum 71242.461 cells X 103 L”1 at the outlet of the polishing pond during
October. On the other hand the annual average fluctuated from 3241.365 cells X 103 L”1 at the inlet
of the aerated pond as a minimum value to 21510.436 cells X 103 L”1 as a maximum value at the
outlet of the polishing pond. 38 species were recorded belonging to 5 different groups:
Chlorophyceae which was the first dominant group forming 65.90% of the total phytoplankton
community followed by Euglenophyceae: 14.57% and Bacillmiophyceae: 14.01% as the second
dominant groups, while the Cyanophyceae was· the third dominant group forming 4.52% of the total
phytoplankton community. The Cryptophyceae was the last group which was scarcely and sporadically
distributed fmming 0.99% of the·total phytoplankton community. However, approximately ;ul the
species in this study are pollution tolerant species and considered as eutrophic indicators.