Study on Bacillariophyta phylum of phytoplankton diversity in the southern Caspian Sea (During 2010-2011)

Subject Areas : New Technologies in Aquaculture Development

Received: 2021-02-03 Accepted : 2021-02-03 Published : 2014-08-23

Keywords: Caspian Sea, Bacillariophyta, Keywords: Phytoplankton, Seasonal diversity,

Abstract :

Abstract[1] Before each study in Caspian Sea, ongoing ecological study of the Caspian Sea, especially the distribution and identification of species composition, density and biomass, regional and seasonal variations in phytoplankton appears necessary. Due to various physical and chemical factors of rivers leading to the sea and bed topography, it seems initial production rate in the different seasons and stations are different. This study done in 2010-2011 through spring, summer, autumn and winter, in 32 studies from 8 transects (Astara, Anzali, Sefidrood, Tonekabon, Noshahr, Babolsar and Bandar Turkman). In each transect, it have chosen 5 stations were sampled quarterly from the zero depth (level), 10, 20, 50 and 100 m by Niskin sampler. In totally, 81 species of Bacillariophyta identified. Studies showed that Shannon index for Bacillariophyta was different in different seasons and stations. * Corresponding Authors; Email: [e-mail]