Impacts of the Physico-chemical Properties of Al-Chibayish Water Marshes on The Biodiversity of Phytoplankton

Phytoplankton, as one of the most important primary producers in aquatic ecosystems, has been widely used to indicate health ecosystems. Nine physico-chemical parameters water, well phytoplankton community, Al-Chibayish marsh were studied. Samples collected from four sites and analyzed every two months January October 2019.
 Seasonal variations physical chemical properties observed at all during study period. The results indicated that 154 species recorded. highest percentage was recorded be 64.28% for Bacillariophyceae (diatoms) (Centrales 3.24% Pennales 61.03%), followed by Chlorophyceae (16.23%), Cyanophyceae (11.68%), Charophyceae Euglenophyceae (3.24%), while Pyrrophyceae lowest value (1.29%) numbers 102, 94, 99 1, 2, 3 4 ,respectively, total density ranged 223.769 cells x103 2784.693 September site with a clear increase March September, number 223.796 - 237.248 May, respectively. dominance diatoms 49.07% phytoplankton, abundance 0.04% Pyrrophyceae. statistical analysis showed significant differences among months, concerning physical, chemical, biological factors measured period, p-value <0.05.