بررسي پراكنش فصلي فيتوپلانكتونها در زمان جزر و مد در رودخانه بهمنشير

Seasonal distribution of phytoplankton within tidal period in Bahmanshir River

Bahmanshir River with 80km length is located in the southwestern Khuzestan Province, Iran. The seasonal distribution of phytoplankton community in spring and summer of 2007 was investigated. The river presented different characteristics between the periods of high & low water (tidal). Within tidal period, diatoms were dominated followed by Cyanophyceae and Chlorophyceae. As a result, abundance and diversity of phytoplankton in high tide were more than low tide. Phytoplankton was significantly associated with flow velocity, suspended sediment concentration and transparency.