By Nkechinyere Onyewere Nweze
The rate of phytoplankton production in ogelube lake, opi, Nsukka was determined. It was related to seasonal variations in phytoplankton population and physico-chemical parameters such as depth, PH, temperature, transparency, color, alkalinity, oxygen, sulfide, iron, total dissolved solids, phosphates, nitrates, silica and ammonia nitrogen.