Profile of nutrients content (Nitrate, Nitrite and Ammonia) and distribution in one day cycle at cage culture area in Setiu Lagoon, Terengganu

Abstract

Study on nutrients content (nitrite, nitrite and ammonia) and distribution in cage culture area of Setiu Lagoon, Terengganu was carried out with two sampling; the first sampling on 19 - 20 December 2006 and the second sampling on 17 - 18 January 2007. The sampling involved only one station but carried out in one day cycle. Nutrients that were measured in water samples were nitrate, nitrite and ammonia. The objectives of this study are to determine the factor that gave effects to the nutrient distribution and content and to determine the effect of North East Monsoon season to the nutrient distribution. Based on the results of water samples analysis, the average value and the range of nitrate concentration during the first sampling are 0.811 mg/L (0.155 - 1.572 mg/L) for surface water and 0.936 mg/L (0.346 - 1.609 mg/L) for bottom water. The average value and the range of nitrate concentration during the second sampling are 1.740 mg/L (0.293 - 3.473 mg/L) for surface water and 0.771 mg/L (0.486 - 1.361 mg/L) for bottom water. The average value and the range of nitrite concentration during the first sampling are 0.014 mg/L (0.009 - 0.020 mg/L) for surface water and 0.020 mg/L (0.004 - 0.042 mg/L) for bottom water.