A total of 162 phytoplankton species found monthly from 3 littoral and 2 vertical stations between June 2003 and June 2005 were identified from Lake Abant (Bolu, Turkey). Some species, such as Trachelomonas volvocina Ehrenberg, Cryptomonas ovata Ehrenberg, and Ceratium hirundinella (Müller) Dujardin showed frequent occurrence almost every month, but others had specific seasonality. | Turk J Bot 31 (2007) 109-124 © TÜB‹TAK Research Article The Phytoplankton Community (except Bacillariophyceae) of Lake Abant (Bolu, Turkey) Abuzer ÇELEKL‹1*, Olcay OBALI2 & Okan KÜLKÖYLÜO⁄LU1 1 Abant ‹zzet Baysal University, Faculty of Arts and Science, Department of Biology, Gölköy 14280 Bolu - TURKEY 2 Ankara University, Faculty of Science, Department of Biology, Beflevler, Ankara - TURKEY Received: Accepted: Abstract: A total of 162 phytoplankton species found monthly from 3 littoral and 2 vertical stations between June 2003 and June 2005 were identified from Lake Abant (Bolu, Turkey). Some species, such as Trachelomonas volvocina Ehrenberg, Cryptomonas ovata Ehrenberg, and Ceratium hirundinella (Müller) Dujardin showed frequent occurrence almost every month, but others had specific seasonality. Phytoplankton composition of this lake was dominated by Chlorophyta, accounting for about of the species richness. Phytoplankton composition in Lake Abant included many new reported (> 30) taxa for the algal flora of Turkey. Key Words: Phytoplankton, taxonomy, Lake Abant, Bolu Abant Gölü (Bolu-Türkiye) Fitoplankton Komünitesi (Bacillariophyceae hariç) Özet: Haziran 2003 ve Haziran 2005 y›llar› aras›nda üç k›y›sal ve iki vertikal istasyondan olmak üzere ayl›k olarak toplam 162 fitoplankton türü Abant Gölü’nden (Bolu, Türkiye) tespit edilmifltir. Trachelomonas volvocina Ehrenberg, Cryptomonas ovata Ehrenberg, ve Ceratium hirundinella (Müller) Dujardin gibi baz› türler bütün istasyonlarda hemen her ay s›kl›kla görülürken, di¤erleri özel mevsimsellik göstermifltir. Chlorophyta yaklafl›k % 58,6 tür zenginli¤i ile bu gölün fitoplankton komposizyonunda bask›n olmufltur. Abant Gölü’nde fitoplankton komposizyonu Türkiye algal floras› için çok say›da yeni taxa içermifltir. Anahtar Sözcükler: Fitoplankton, taksonomi, Abant Gölü, Bolu Introduction Phytoplankton are found in a variety of aquatic habitats all over the world and are affected by .
