- 期刊
- OpenAccess
Assessment of Ammonium Uptake by Marine Macroalga Gracilaria verrucosa (Rhodophyta)
並列摘要
The present study explains the rate of ammonium uptake by Gracilaria verrucosa from two different concentrations (10 and 30 μM). The Mean uptake by Gracilaria verrucosa was estimated as 6.118 and 17.31 μM, when the ammonium conc. of 10 and 30 μ in the medium. Based on the rate of uptake, the process was divided into four phases. In the first phase (with in 10 min) the rate of uptake was minimal (0.24 in 10 μM initial conc. and 0.38 in 30 μM initial conc.). In the second phase (20 min to 1 h) maximum uptake was observed (3.3059 and 12.1796 μM). In the third phase (1-6 h), the uptake process was moderate (2.5284 and 4.221 μM). In the Last phase (7-8 h) uptake rate was very less (0.235 and 0.9051 μM). The rates of ammonium uptakes were positively correlated with the nutritional concentration in the environment and negatively correlated with time.