Main Article Content
The effect of Kaduna Refinery effluent discharge on the chlorophyll a and gross primary productivity of river Rido was studied for 12 months at 3 stations in the river. Station 1 is the clean water station not affected by the discharge; stations 2 & 3 are the polluted area. The values for chlorophyll a and gross primary productivity were low in all the stations. Station 1 showed significantly higher (P < 0.05) chlorophyll a and gross primary productivity values than the other two polluted stations. Significant differences (P < 0.05) associated with the seasons were also observed in all the stations. The biological significance of these are discussed.
Journal of Aquatic Sciences Volume 14, April 1999, pp. 43-46
Discharge, chlorophyll a, gross primary productivity, effluents, polluted.