Dynamic Ratio Correlation of N:P in relation to the Diatom Abundance in the Intensive System of the Vannamei (Litopenaeus vannamei) Shrimp Pond

Abstract

Diatoms are one type of aquatic phytoplankton that has an important role. Diatoms, or Bacillariophycyae, are a phytoplankton that suits the needs of the shrimp cultivation in the pond because diatoms are an abundant primary producer and are needed as natural feed. Diatom needs nitrogen and phosphate in its life, while the nutrient itself in the water is not always in a stable condition. The research aimed to determine the dynamic ratio correlation of N:P in relation to the diatom abundance in intensive system vannamei (Litopenaeus vannamei) shrimp ponds in order to maintain aquatic stability or living media within intensive system vannamei shrimp cultivation. The main parameters observed were Ammonium, Nitric, Nitrate and Phosphate, as well as the abundance of diatom plankton. The supporting parameters measured were pH and clarity in the intensive vannamei shrimp pond in Banyuwangi. Based on results of the data analysis and the study about correlation of dynamic ration N:P toward abundance of Diatom, it can be concluded that the ratio value of N:P influences the composition of the level classification of the phytoplankton in aquatic cultivation. The differences in the level of ammonium, nitric, nitrate and phosphate provide different influences on the diatom abundance in the water. A high level of nitrate indicates an abundance of diatoms.