Study on monthly variation of phytoplankton in the coastal waters of Lavan Island

Document Type : Research Paper

Authors

Abstract

Samples for monthly variation of phytoplankton species were collected in two stations from October 1996 till September 1997. In this study 65 species of phytoplankton related to diatoms, dinoflagellates and blue-green algae were identified. Diatoms represent 44 species (67%) related to 25 genera, followed by 18 species (26%) related to 7 genera dinoflagellates and only 3 genus (7%) belong to the blue-green algae. The diversity of diatoms species mainly composed of Rhizosolenia (12 species) and (6 species) were markedly greater than the diversity of dinoflagellates which were composed Ceratium (11 species). The diversity of both groups were significantly greater than the blue-green algae. Diatoms and dinoflagellates were abundant during periods of low salinity and temperature, meanwhile this situation was vise-versa for blue-green algae with high abundance in warm months.

Keywords