USING PHYTOPLANKTON AS BIO-INDICATORS OF ORGANIC POLLUTION IN AL-DIWANIYAH RIVER, IRAQKhitam A. Marhoon and Ebtesam K. Khudher
The purpose of Current study is the determined of organic pollution by using phytoplankton as bio-indicators. Samples were collected during the period October 2016 to September 2017, from four sites in the middle of Al-Diwaniyah River- Iraq. Results show that the total number of phytoplankton range from (112.9 - 4393.06) cell * 103/liter in the first site and third site respectively. As for the indices of organic pollution, the study recorded values ranging from (1.19-1.86), (1.21-2.51), (1-12), (4.7333-15.793), (27.08-89.83), (1.24-1.88) for Saprobic index (S), Pollution Tolerance Index (PTI), Palmer Pollution Index (PPI), Index of Pollution Sensitivity (IPS), Precente sensitive Species % (SS), Biological water Quality Index (BWQI (respectively during the study period. The results in this study revealed that third siteis prone to organic pollution from household, industrial and agricultural residues and sewage treatment plant residues that are raised for the river, while the other sites are reduced as a result of the dilution of pollutant concentrations. Thus according to the organic pollution indices, we can considered the water of AL-Diwaniyah River ranged from low organic pollution to Moderate organic Pollution. That is, the quality of the Diwaniyah river water ranges from being of low (acceptable) to good quality water.
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