水産養殖研究開発ジャーナル

概要

Wet Season Variations of some Physicochemical Parameters of the Brackish Water farm, Buguma, Niger Delta, Nigeria

Owhonda KN

Some physicochemical parameters of Nigerian Institute for Oceanography and Marine Research/African Regional Aquaculture Centre (NIOMR/ARAC) brackish water fish farm; Buguma; Rivers State; Nigeria were monitored twice each month from April to October in 2011 and 2012; covering wet season for both years in the region. The result obtained indicates that for 2011 pH; ammonia-nitrogen; nitrite-nitrogen; nitrate-nitrogen; alkalinity; carbon (iv) oxide; salinity; dissolved oxygen and temperature ranges were between 6.5-7; 0-0.1 ppm; 0.25-0.25 ppm; 40-80 ppm; 5-10 ppm; 9-20 ppt; 3.8-6 ppm and 26-31oC respectively while for 2012 pH; ammonia-nitrogen; nitritenitrogen; nitrate-nitrogen; alkalinity; carbon (iv) oxide; salinity; dissolved oxygen and temperature ranges were between 6.5-7; 0-0.1 ppm; 0.05-0.05 ppm; 0.05-0.25 ppm; 40-80 ppm; 5-10 ppm; 9-20 ppm; 3.8-5.6 ppm; 26-31oC respectively. There were no significant differences (p>0.05) in all parameters for both years and the values measured were within tolerable limits for optimum aquaculture.