Phytoplankton species in Anzali Lagoon and Caspian Sea coastal waters
Plankton samples were collected in 28 stations in Anzali Lagoon and nearby coastal areas during 1997-1999. Overall, 9 phyla, 134 genera and 278 phytoplankton species were identified. Of the identified species, 56 genera and 107 species belonged to phylum Chlorophyta, 39 genera and 87 species belonged to Bacillariophyta, 2 genera and 2 species were from Xanthophyta, 4 genera and 4 species belonged to Chrysophyta, 6 genera and 34 species were from Euglenophyta, 7 genera and 9 species belonged to Pyrrophyta, I genus and 2 species were from Cyanophyta, 18 genera and 32 species were from Cyanophyta and I genus and species was of Rhodophyta. We showed Cyanophyta and Bacillariophyta to be the most abundant phyla and western and southern parts of the lagoon the richest in terms of phytoplankton diversity and density. Cyanophyta planktons were the most abundant in summer in western part of the lagoon and were comprised of Microcystis aeruginosa, Oscillatoria limosa and Anabaenopsis raciborskii. Diatoms were observed throughout the year everywhere in the lagoon with their diversity being highest in late autumn, winter and spring. The dominant species of Bacillariophyta were Cyclotella meneghiniana, Synedra ulna and Nitzschia acicularis in the lagoon while Rhizosolenia calcar was dominant in estuarine and coastal areas during summer. Of Chlorophyta, species belonging to Scenedesmus were abundant in spring and of Euglenophyta, Euglena acus and Trachelomonas armata were most abundant in southern part of the lagoon in spring and summer. Gymnodinium coronatum from Pyrrophyta was abundant in summer in western part of the lagoon while Exuviaella cordata was dominant in estuary and coastal areas during autumn.
| Main Authors: | , , |
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| Format: | Journal Contribution biblioteca |
| Language: | Persian |
| Published: |
2006
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| Subjects: | Phytoplankton, Species, Phylum Chlorophyta, Bacillariophyta, Xanthophyta, Chrysophyta, Euglenophyta, Pyrrophyta, Cyanophyta, Rhodophyta, Microcystis aeruginosa, Oscillatoria limosa, Anabaenopsis raciborskii, Synedra ulna, Nitzschia acicularis, Rhizosolenia, Gymnodinium, |
| Online Access: | http://hdl.handle.net/1834/12860 |
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| Summary: | Plankton samples were collected in 28 stations in Anzali Lagoon and nearby coastal areas during 1997-1999. Overall, 9 phyla, 134 genera and 278 phytoplankton species were identified. Of the identified species, 56 genera and 107 species belonged to phylum Chlorophyta, 39 genera and 87 species belonged to Bacillariophyta, 2 genera and 2 species were from Xanthophyta, 4 genera and 4 species belonged to Chrysophyta, 6 genera and 34 species were from Euglenophyta, 7 genera and 9 species belonged to Pyrrophyta, I genus and 2 species were from Cyanophyta, 18 genera and 32 species were from Cyanophyta and I genus and species was of Rhodophyta.
We showed Cyanophyta and Bacillariophyta to be the most abundant phyla and western and southern parts of the lagoon the richest in terms of phytoplankton diversity and density. Cyanophyta planktons were the most abundant in summer in western part of the lagoon and were comprised of Microcystis aeruginosa, Oscillatoria limosa and Anabaenopsis raciborskii. Diatoms were observed throughout the year everywhere in the lagoon with their diversity being highest in late autumn, winter and spring. The dominant species of Bacillariophyta were Cyclotella meneghiniana, Synedra ulna and Nitzschia acicularis in the lagoon while Rhizosolenia calcar was dominant in estuarine and coastal areas during summer. Of Chlorophyta, species belonging to Scenedesmus were abundant in spring and of Euglenophyta, Euglena acus and Trachelomonas armata were most abundant in southern part of the lagoon in spring and summer. Gymnodinium coronatum from Pyrrophyta was abundant in summer in western part of the lagoon while Exuviaella cordata was dominant in estuary and coastal areas during autumn. |
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