The study of phytoplankton community with emphasis on dominant species in surface layers of the southern Caspian Sea (coastal of Mazandaran)

Subject Areas : New Technologies in Aquaculture Development

Received: 2021-02-13 Accepted : 2021-02-13 Published : 2015-08-23

Keywords: Caspian Sea, Dominant species, Keywords: Phytoplankton, Coastal of Mazandaran,

Abstract :

Abstract[1] This study was carried out in order to determination dominant phytoplankton species in Iranian costal waters of the southern Caspian Sea (coastal of Mazandaran) in summer and winter, 2010. The sampling was done at surface layer of 5, 10, 20, 50 and 100 m depths at 4 transects including Tonekabon, Noshahr, Babolsar and Amirabad. The results of this study showed the Cyanophyta and Bacillariophyta were dominant phyla in term of abundance in summer and winter, respectively. However, Bacillariophyta contained the highest number of species in both seasons (summer and winter). Oscillatoria sp. and Pseudonitzschia seriata (harmful and toxin producer species) had the highest abundance and frequency in summer and winter, respectively which are changed in compare to pervious studies. It seems that Mnemiopsis leidyi invasion, anthropogenic activities, discharge of organic matters and nutrients through riverine runoff have been effective factors in phytoplankton community in term of abundance and species composition. * Corresponding Authors; Email: [e-mail]