Variations in Nutrient Concentration and Phytoplankton Composition at the Euphotic and Aphotic Layers in the Iranian Coastal Waters of the Southern Caspian Sea

Hasan Nasrollahzadeh Saravi, Zubir Bin Din and Asieh Makhlough

Pakistan Journal of Biological Sciences 11 ( 9 ): 1179 - 1193 , 2008