Investigation Of The Physiochemical Parameters And Plankton Population Of Anya Stream In Ikwuano L.G.A, Abia State

ABSTRACT

The physiochernical parameters and plankton oF Anya stream in Ikwuano local government area of Abia State were investigated from September, 2010 to early November, 20 I 0 and samples were collected lortnightly. Results show that the physical parameters particularly p1--I, temperature, dissolved oxygen and transparency were adequately high for primary productivity. Mean temperature, transparency, dissolved oxygen and pH were 25.5°C±l .04, 3.63cm±0.5, 5.69MgU '±0.72, 6.74±0.61 respectively. Cladocera dominated the plankton community making up 1 5.3% of the total plankton abundance by number while the diatoms dominate the phytoplankton, contributing 15% of the total plankton abundance. Rainfall also affected the level of primary productivity by stimulating increased production level and phytoplankton abundance. Zoop1anktm were also high with rains. The investigations show that Anya Stream is highly productive and adequate for aquaculture practices.