Chlorococcal chlorophyte composition, community structure, and seasonal variations in the shallow lakes of the Kızılırmak Delta, Turkey

Authors : Faruk MARAŞLIOĞLU, Elif Neyran SOYLU, Arif GÖNÜLOL

Pages : 117-124

View : 17 | Download : 5

Publication Date : 2011-12-01

Article Type : Research Paper

Abstract :The chlorococcal chlorophyte community structure and seasonal variations in terms of species composition and abundance of dominant species in Tatlı, Gıcı, Liman, and Cernek lakes insert ignore into journalissuearticles values(Samsun, Turkey); were investigated between 1996 and 2003. Species richness and diversity insert ignore into journalissuearticles values(Shannon-Weaver, H`); were measured monthly from stations at the surface of each lake. Changes in the Chlorococcales community structure were examined with nonmetric multidimensional scaling insert ignore into journalissuearticles values(NMDS); ordinations. A total of 36 Chlorococcales species were identified in these lakes located in the Kızılırmak Delta. While the Chlorococcales composition was similar in Tatlı, Gıcı, and Liman lakes, Cernek Lake showed different seasonal trends, indicating high species richness. Ankistrodesmus falcatus and Kirchneriella obesa were important in terms of their contribution to the total Chlorococcales present in Tatlı, Gıcı, and Liman lakes, and Monoraphidium irregulare had high concentrations among the Chlorococcales in Cernek Lake. There were clear increases in the species richness of Monoraphidium and Ankistrodesmus in all lakes during winter compared with other seasons.
Keywords : Key words Lagoon, Chlorococcales, Shannon Weaver index, NMDS