Use of indices of algae and water quality to assessment of tigris river in al-Gheraiat area in Baghdad city, Iraq

الملخص EN

This work incorporates phytoplankton decent variety and its physicochemical properties in Tigris river with various conditions, for example, (Temperature of water and air, pH, total suspended solids (TSS), total dissolved solids (TDS), water flow, Light Penetration, turbidity, dissolved oxygen, biochemical oxygen demand (BOD5), total alkalinity, hardness, calcium, magnesium, and micronutrients.

During the study period in Al- Gheraiat area, there were 199 species of phytoplankton; diatoms were the most common.

Their growing peak was in spring 2017 comparing to summer and autumn 2016.

Water quality, understudy, was arranged according to Shannon and Winner’s index in addition to Palmer’s Pollution index.

The quality of the river water has been proved to be of moderate pollution according to Shannon and Winner’s index and of high organic pollution according to Palmer’s Pollution index