The Beshar River is one of the most important aquatic ecosystems in the upstream of the Karun watershed in south of Iran which is affected by point and non point pollutant sources . This study was done in order to evaluate the effects of pollutants activities on the water quality of the Beshar river and its aquatic ecosystems. This river is approximately 190 km in length and situated at the geo...

The Yasuj city stream named the Beshar supply water for different usages such as aquaculture farms , drinking, agricultural and industrial usages. Fish processing plants ,Agricultural farms, waste water of industrial zones and hospitals waste water which they are generate by human activity produce a considerable volume of effluent and when they are released in to the stream they can effect on t...

The Beshar River is one aquatic ecosystem,which is affected by pollutants. This study was conducted to evaluate the effects of human activities on the water quality of the Beshar river. This river is approximately 190 km in length and situated at the geographical positions of 51° 20 ́ to 51° 48 ́ E and 30° 18 ́ to 30° 52 ́ N it is one of the most important aquatic ecosystems of Kohkiloye and Boyera...

The Beshar River is one aquatic ecosystem, which is located next to the city of Yasuj in southern Iran. The Beshar river has been contaminated by industrial factories such as effluent of sugar factory, agricultural and other activities in this region such as, Imam Sajjad hospital, drainage from agricultural farms, Yasuj urban surface runoff and effluent of wastewater treatment plants ,specially...

Evaluating the Environmental Flow of Beshar River, Using Tennant's Hydrological Method Based on Biological Requirements Indicator Fishes

in the present study, we reported the results of the monitoring and investigations of the ichthyofauna of the beshar river, one of the tributaries of the tigris−euphrates basin in kohkiluyeh and boyer-ahmad province, southwest of iran. the results showed that during a period from 2010 to 2011, a total of 13 fish species belonging to 4 families and 3 orders were recorded in the beshar river. the...

we collected the specimens of turcinoemacheilus hafezi throughout the spawning season (january to july, 2012) in beshar river (south-west iran) and investigated its age, growth, and reproductive characteristics. the maximum age was 2 + years. total length and weight of the specimens ranged from 29 to 61 mm and 0.17 to 1.39 g, respectively. length-weight relationship was estimated as w = 3e-05tl...

Due to the lack of water quality of resourses in country, exact review of available water resources quality, especially in terms of heavy elements (heavy metals) has a particular importance. Due to industrial towns 1 and 2 of Yasuj city and also Yasuj wastewater treatment, surveying environmental harmful effects of heavy metals on this river is very important. To investigate the changes of heav...