PJB-2017-697
THE ASSESSMENT OF WATERS QUALITY BY USING DIATOMS AS A BIOINDICATOR, DISTRICT MARDAN, KP, PAKISTAN
Mursaleen
Abstract
To assess the water quality of district Mardan, diatoms were used as a bioindicator. Diatoms are excellent indicators of water-quality. Algal and water samples were collected season wisely from three research sites (Mardan, Takht Bhai, Katlang). A total of 78 species of diatoms belonged to 27 genera were recorded. Season wise study indicated that maximum number (49 species) were found in winter followed by autumn with (39 species) summer with (22 species) to the minimum (17 species) in spring. Maximum species were reported for the genera Navicula, Nitzschia, Cymbella, Gyrosigma and Ghomphonema in the research sites. Physiochemical properties of the water of the studied sites were calculated through available standard methods. During the entire period of study, fluctuation (minimum and maximum) in the physiochemical properties of polluted water in the research sites in different seasons occurred: temperature (12.5-31.7 0C), pH (8.7-9.2), turbidity (59.6-156 NTU), TDS (158.6-414 mg/l), TSS (100-212 mg/l) and electrical conductivity (341-435 μS/cm). Statistical analysis showed that factors like temperature and total dissolved solids were highly significant while pH was significant in the growth of diatoms. Diatoms showed positive correlation with total dissolved solids, electrical conductivity and total suspended solids, while negatively correlated with temperature, pH and turbidity.
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