Author/Authors :
Sabancı, Fatma Çolak Ege Üniversitesi - Su Ürünleri Fakültesi - Su Ürünleri Temel Bilimler Bölümü, Turkey , Koray, Tufan Ege Üniversitesi - Su Ürünleri Fakültesi - Su Ürünleri Temel Bilimler Bölümü, Turkey
Abstract :
In this study, the qualitative and quantitative changes in diatom species composition and species diversity (Shannon-Wiener) were examined seasonal (November 2008, February 2009, April 2009, July 2009, November 2009, February 2010, March 2010 and July 2010) at the 9 stations (0.5 m, 5.0 m, 10.0 m ve 15.0 m) located in the inner, middle and outer Izmir Bay between 2008-2010. A total of 29 species, 48 taxa, 1 variety and 3 forma belonging to the class Bacillariophyceae were determined. The differences in the density of diatom depending on the stations and sampling periods were defined. Excessive growth was observed especially in the the stations located in the inner bay during February 2009 and 2010 and the highest cell density has been identified in station 26, followed by stations 22 and 24. Pseudo-nitzschia pungens, Rhizosolenia setigera and Skeletonema costatum were the dominant species which provided the greatest contributions to the density of species of Bacillariophyceae. However, Pleurosigma elongatum was the species which has the highest relative abundance and frequency. The highest and the lowest diversity index values have been identified in February 2009 with 35 species as 4.778 bits cell-1 and in July 2009 with 31 species as 0.963 bits cell-1 respectively.
NaturalLanguageKeyword :
Diatom species composition , Diversity index , Hierarchical clustering , MDS , İzmir Bay.
