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Title

THE ASSESSMENT OF THE POSSIBILITY OF SONBOLROOD RIVER BENTHIC COMMUNITIES EFFECT ON DETERMINATION OF WATER QUALITY IN SONBOLROOD RIVER IN SAVADKOOH REGION

Pages

 Start Page 47 | End Page 52

Abstract

 Sonbolrood river originates from the springs of Kalij village mountains located in Savadkooh region in geographical situations of N: 36" 18' 877 and E: 52" 49' 384, and finally, joins Babolrood river, which is one of input branches of south basin of the Caspian Sea. Geographical situation of this region is N: 36" 20' 15 and E: 50" 24' 550. Sonbolrood River located in Savadkooh region was assessed with the aim of a better understanding of benthic invertebrates' roles in self- biofiltration resulting from sewage entrance. Consequently, 4 stations were selected among 8 stations according to the pre-sampling program. Sampling started in autumn 2009 and ended in summer 2010.Generally, Sonbolrood river benthoses consisted of 3 branches of arthropods and wide worms along with 3 classes, 6 orders and 14 families of mollusca. The maximum diversity and distribution were in autumn and the minimum were in summer at all the stations.The fourth and the third stations showed the maximum and the minimum diversity and distribution. The WATER QUALITY of Sonbolrood river was assessed for all the stations except station 3, based on Hisenov WATER QUALITY guideline. Sonbolrood river was a wholly decent ecosystem for aquatic organisms due to having an extreme steep, stony-sandy bed and doing self-biofiltration. The increase of organic substances and the sewage of the factory located in an industrial complex at station 3, the increase of water contamination resulting from culturing warm-water fish in the soil dam of Sonbolrood river and the entrance of the adjacent village home sewage such as Seyedkala village and Sirdarkala, caused the increase of pollution and trophy of the benthoses resistant to the pollution and influenced on BENTHIC COMMUNITIES.

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