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Species composition and diversity of epipelic algae in Balık Lake (Şavşat-Artvin, Turkey)
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The species composition and diversity of the epipelic algae of Balık Lake were investigated between May and October 2008. A total of 39 taxa were determined, and Cyclotella meneghiniana, Craticula cuspidata, Closterium strigosum, Cocconeis placentula var. euglypta, and Amphora ovalis were the most conspicuous algae, regarding frequency of occurrence and relative abundance in the epipelic algal flora. | Research Article Turk J Bot 34 (2010) 441-448 © TÜBİTAK doi:10.3906/bot-0912-290 Species composition and diversity of epipelic algae in Balık Lake (Şavşat-Artvin, Turkey) Bülent ŞAHİN*, Bülent AKAR, İmran BAHÇECİ Karadeniz Technical University, Fatih Education Faculty, Department of Biology 61335 Söğütlü, Trabzon - TURKEY Received: 30.12.2009 Accepted: 05.05.2010 Abstract: The species composition and diversity of the epipelic algae of Balık Lake were investigated between May and October 2008. A total of 39 taxa were determined, and Cyclotella meneghiniana, Craticula cuspidata, Closterium strigosum, Cocconeis placentula var. euglypta, and Amphora ovalis were the most conspicuous algae, regarding frequency of occurrence and relative abundance in the epipelic algal flora. While the highest total cell number of the epipelic community was 26,214 cells/cm2 in October, the lowest was 23,644 cells/cm2 in July. The highest species diversity index (H') value was 2.26, in June. Key words: Epipelic algae, seasonal variation, diversity, Balık Lake, Turkey Balık Gölü (Şavşat-Artvin, Türkiye) epipelik alglerinin tür kompozisyonu ve çeşitliliği Özet: Balık Gölü epipelik alglerinin tür kompozisyonu ve çeşitliliği 2008 yılının Mayıs ve Ekim ayları arasında incelenmiştir. Toplam 39 takson tespit edilmiştir. Cyclotella meneghiniana, Craticula cuspidata, Closterium strigosum, Cocconeis placentula var. euglypta ve Amphora ovalis epipelik alg florasının nispi bolluğu ve bulunuş sıklığı açısından göze 2 en çok çarpan türleri olmuştur. Epipelik kommunitenin en yüksek yoğunluğu Ekim ayında 26.214 hücre/cm iken, en 2 düşük yoğunluk Temmuz ayında 23.644 hücre/cm ’dir. En yüksek çeşitlilik indeksi (H') Haziran ayında 2,26’dır. Anahtar sözcükler: Epipelik algler, mevsimsel değişim, çeşitlilik, Balık Göl, Türkiye Introduction Epipelic algae live on the soft bottom sediments and cover a considerable area in most lakes (BjörkRamberg, 1984). They perform a range of ecosystem functions .