Ecological study of the phytoplankton in CD4A Drainage in Al-Diwaniya Iraq

Abstract

The study involves phytoplankton in the main have been chosen The present
study was conducted during the period of Desember 2011 to Ogust 2012 . The
characteristics determined including :Temperature,light penetration, ph ,Dissolved
oxygen and salinity. The number of species of phytoplankton taxa 143 species belonging
to 58 genus as as Bacillariophycaea were the prevailing rate of 65.73%, and the rate of
(94) species, followed by Chlorophytceae that recorded (28) species by 19.58% ,
Cyanophyceae by 13.28% (19) species and then Euglenophyceae 1.39 % (2) .the present
study showed higher algal total count in spring in all studied stations the total number of
of phytoplankton which ranged about(5218.9-267.9) x 103 cell/cm2 .