Open AccessPhytoplankton performance in supporting primary productivity in the intensive culture system of vannamei shrimp
Author(s) -
Niken Tunjung Murti Pratiwi,
Bambang Widigdo,
Ali T. Yasin,
J. Soffyan,
Aliati Iswantari,
Diyah Wulandari
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/744/1/012054
Subject(s) - phytoplankton , plankton , productivity , shrimp , chaetoceros , species evenness , environmental science , nutrient , biology , dominance (genetics) , nitrate , water quality , ecology , oceanography , species diversity , biochemistry , gene , economics , macroeconomics , geology
Plankton is an important element in supporting successful shrimp production, including in intensive ponds with high stocking densities and high frequency of feed application. This influences phytoplankton dynamics due to changes in water conditions. This study aims to analyze the dynamics of primary production related to the performance of the phytoplankton community and water quality in the intensive pond system. Observations were made on primary productivity, phytoplankton community structure, and water quality. The results showed that Chaetoceros and Rhizosolenia appeared in all observation with high densities, followed by Nitzschia, Straurastrum , Oscillatoria , and Peridinium with less densities. The diversity and dominance indices of plankton were relatively low with moderate to relatively high evenness index. There was increasing primary productivity over time and fluctuated characteristics of water quality A strong correlation shown between nutrient (nitrate, nitrite and ammonium, and orthophosphate) and the abundance of phytoplankton that tend to increase due to the nutrients resulting from the decomposition. Diatoms mostly constructed the primary productivity of shrimp pond, which was supported by synchronous condition between organic matter and nutrients through the value of C/N and N/P, as well as the composition of plankton.