Hubungan Konsentrasi Nitrat Dan Fosfat Terhadap Produktivitas Primer Fitoplan…

ABSTRACT This research was conducted in January 2020 in the waters of the Sungai Sembilan Dumai which aims to determine the concentration of nitrate and phosphate on the primary productivity of phytoplankton. The research method used in this research is survey method while the determination of the research station was done by purposive sampling. The results showed that the average nitrate…