Vol. 4, Issue 2 (2019)
Evaluation of total nitrogen In saguling reservoir during period 2007–2016 For sustainability of fish cultivation on floating net cage
Author(s): Isni Nurruhwati, Iwang Gumilar, Heti Herawati, Dina Arifiah
Abstract: This research aims to evaluate the content of organic matter in Saguling Reservoir within the period 2007-2016, comparing the organic matter conditions of the previous years with 2017, and describing the effect of organic matter for cultivation on floating net cage in Saguling Reservoir. The research was conducted in Saguling Reservoir, West Java in April-May 2017. This research used descriptive comparative methods. Sampling was done 3 times with 3 stations namely station 1 (Maroko), station 2 (Cijere), and station 3 (near intake structure) at a depth of 0,2 m, 5 m, and near the base. The analysis was done by comparing the value of Total Nitrogen (total-N) and water quality parameters (pH, DO, BOD, turbidity, and temperature) between stations with Government Regulation No. 82 year 2001 and other literature. The results showed that each station has been included in eutrophic waters dueto nitrate value>0,02 mg/L. During the period 2007-2016 station 2 tended to have higher nitrate values than other stations and reached its peak in the 3rd quarter of 2011, which was 4,91 mg/L. Starting from the3rd quarter of 2014 the total-N value of station 1 is higher than the other stations, while in 2017 both values tend to rise in all stations especially near the base, but the total-N value and other water quality parameters can still support for fish cultivation onfloating net cage.