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 (Samsun, Turkey) were investigated between 1996 and 2003. | Turk J Biol 35 (2011) 117-124 © TÜBİTAK doi: Chlorococcal chlorophyte composition, community structure, and seasonal variations in the shallow lakes of the Kızılırmak Delta, Turkey Faruk MARAŞLIOĞLU1, Elif Neyran SOYLU2, Arif GÖNÜLOL1 1Department of Biology, Faculty of Arts and Science, Ondokuz Mayıs University, Samsun - TURKEY 2Department of Biology, Faculty of Arts and Science, Giresun University, Giresun - TURKEY Received: 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 (Samsun, Turkey) were investigated between 1996 and 2003. Species richness and diversity (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 (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. Key words: Lagoon, Chlorococcales, Shannon-Weaver index, NMDS Türkiye, Kızılırmak Deltası sığ göllerindeki chlorococcal chlorophyta üyelerinin kompozisyonu, kümesel yapısı ve mevsimsel değişimi Özet: Tatlı, Gıcı, Liman ve Cernek göllerindeki (Samsun, Türkiye) tür kompozisyonu ve dominant tür yoğunluğu içindeki chlorococcal chlorophyta üyelerinin kümesel yapısı ve mevsimsel .
