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Using Diatoms as Bioindicators to Assess AL-Diwaniya River/ Iraq | ||
| journal of al-qadisiyah for pure science(quarterly) | ||
| Article 1, Volume 16, Issue 4, 2016, Pages 64-80 PDF (0 K) | ||
| Author | ||
| Naser Hussein AL-Nashy | ||
| Abstract | ||
| The present study aims to assess AL-Diwaniya river by using diatoms as bioindicators And using Palmer Pollution index.Water samples were collected monthly during the period March 2015 to February 2016, Three sites were selected in AL-Diwanhya river. the investigation was to study the physical, chemical and biological characters in the river, The water of the river was good oxygenated, oligohaline, very hard and alkalinity returned to the bicarbonate, and results also showed an increase of pollutants especially in third site. It is concluded that the sewage had an dilution effect for the total hardness, alkalinity, electrical conductivity and salinity of river. Diatoms species which were identified during study period 170 belong to 34 genera, Centrales12 species which returned to 5 genera, while Pennales158 species belong to 32 genera, The species that have highs numbers are (Achnanthes, Cymbella, Nitzschia, Navicula). Other types are dominant in their existence and number during study period (Cycltella comta, C. Kutzingana, C. meneghiniana, C. Ocellata, Diatoma elongatum and Cocconeis Placentula), according to Palmer Index the water of river was moderate pollution.. | ||
| Keywords | ||
| KEYWORDS; Diatoms; Bioindicators and River | ||
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