Sürdürülebilir Kalkınma Amaçları
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- MakaleAçık Erişim2017Diversity and ecology of benthic diatoms in karagöl lake in karagöl-Sahara national park (Şavşat, Artvin, Turkey)
Akar, Bülent; Şahin, Bülent
The main goal of this study is to determine the composition, diversity and ecology of benthic diatoms in Karagöl Lake in Karagöl-Sahara National Park. Monthly sampling (from sediments, stones and aquatic plants in littoral zone of the lake) taken in three consecutive years revealed 57 diatom taxa with Gomphonema and Pinnularia being the most abundant species while other genera are represented with three or fewer species. Lindavia ocellata was the most dominant taxon in the samplings examined throughout the whole study. The values of diversity and evenness indices are high during the spring and early summer. Based on cluster analysis for monthly samples of epipelic diatom, there are two different groups at the lowest similarity level. The associations between August 2010 and September 2010 months are the most significant with 86.02%. The organism number of epipelic diatoms showed positive correlation (P<0.01) with dissolved oxygen, while negative correlation (P<0.05) with temperature. Detailed floristic and ecological examination of the benthic diatom communities has not been carried out before this study in this lake. Therefore, this study is the first to our knowledge towards revealing aquatic benthic diatom biodiversity of Karagöl-Sahara National Park and provides basis for future investigations.
- MakaleAçık Erişim2016Diversity and ecology of benthic algae in Karagöl Lake, Karagöl-Sahara National Park (Şavşat, Artvin, Turkey)
Akar, Bülent; Şahın, Bülent
Benthic algal flora of Karagöl Lake, its seasonal variation, and the physical and chemical parameters of the water were studied between October 2008 and September 2010. The algal flora consisted of 112 taxa belonging to the divisions Charophyta (41), Chlorophyta (33), Cyanobacteria (18), Euglenozoa (17), Miozoa (2), and Ochrophyta (1). Six desmid taxa found in this research are new records for the freshwater algal flora of Turkey. The qualitative dominance of benthic taxa typical of slightly alkaline and mesotrophic ecosystems was observed. The qualitative and seasonal variations in epipelic taxa analyzed were dependent on the physicochemical characteristics of the water. Water quality was analyzed on the basis of benthic taxa, which are bioindicators. The physicochemical properties of the water are suitable for the development of a rich algal flora (especially desmids). According to the benthic algal composition and indicator species, it is estimated that Karagöl Lake has mesotrophic lake characteristics. This is the first study of benthic algal flora of Karagöl Lake and marks a significant contribution to the knowledge of Karagöl-Sahara National Park’s aquatic biodiversity.
- MakaleYalnız künye2014New desmid records of Karagöl Lake in Karagöl-Sahara National Park (Şavşat-Artvin/Turkey); [Karagöl-Sahara Milli Parki{dotless}'ndaki (Şavşat-Artvin/Türkiye) karagöl'den yeni desmid kayi{dotless}tlari{dotless}]
Akar, Bülent; Şahin, Bülent
The benthic algal flora of Karagöl Lake (Şavşat, Artvin) was investigated between October 2008 and September 2010. Actinotaenium diplosporum var. americanum, Cosmarium pseudoexiguum, Gonatozygon kinahanii, Staurastrum boreale var. quadriradiatum, S. hantzschii and Staurodesmus dejectus var. apiculatus were recorded for the first time for the desmid flora of Turkey.