Effects of different nitrogen (NO3-N ye NH4-N) sources on the growth of harmful marine diatom: Thalassiosira allenii Takano (Bacillariophyceae)
Makaleler > Tam Makale · 2013
Yazarlar: Hacer Göknur ŞİŞMAN AYDIN, B. Buyukisik, AHMET KOCATAŞ
JOURNAL OF TEKIRDAG AGRICULTURE FACULTY-TEKIRDAG ZIRAAT FAKULTESI DERGISI, SCI Expanded İndekslerine Giren Dergi, Uluslararası, Wos, 2013, cilt 10, ss 90-96
Özet
In order to better understand the effect of two nitrogen form on T. allenii, the effects of 6 different concentrations of NO3-N and NH4-N were investigated. T. allenii was isolated from Izmir Bay-Northern Aegean Sea-Turkey and incubated in a f/2 enrichment medium under constant light in a batch culture system. The growth rate of the species was measured as Chl a (mg/l) by monitoring the exponential growth phase. The statistical analysis of the obtained data was performed by utilizing the method of least squares. Half saturation constant (K-s) and maximum spesific growth rate (mu(max)) values estimated for each nitrogen form were obtained as follows: (similar to)0 mu mol NO3-N I-1 and 0.93 day(-1) for nitrate, 0.05 mu mol NH4-N I-1 and 1.034 day(-1) for ammonium. T.allenii species has ability to use both of the nitrogen and therefore can increase the chances of the competition. This results shows that T.allenii species can be a greater role on Algal Blooms.