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Global Journal of Fisheries and Aquaculture

ISSN: 2408-5464  Vol. 4 (1), pp. 270-280, February, 2016

Full Length Research Paper

Monthly variation in physicochemical parameters of Ebonyi river system

Nwabunike, M .O.

Department of Fisheries and Aquaculture, Faculty of Agriculture and Natural Resource Management, Ebonyi State University,  Abakialiki, Ebonyi State, Nigeria

E-mail: Evanmaur@gmail.com, Ojobaokanya@gmail.com

Received 22 December, 2015

Accepted 31 January, 2016

The objectives of the study were to analyze the monthly physic-chemical properties of Ebonyi river system and to make necessary recommendations for the general improvement of fish management in the study area. Stratified random sampling was carried out in each water body. The fishes were caught, identified, counted, graded, measured and weighed according to species. The species for chemical and histological analysis were taken immediately after weighing to the laboratory. It was observed that the mean water temperature of study areas ranged from25.03+0.44 to 29.35+0.44°C. Mkpume River (29.35+0.44°C) had the highest water temperature when compared to that of other study areas (p<0.05). The water temperature of Ameka dam, Enyigba river and Ebonyi river were statistically similar (p>0.05) but their water temperature were significantly lower than that of pond water (p<0.05).  Enyigba river had the highest pH (7.65 +0.05) but the pH of this River does not differ significantly from that of Ebonyi river (7.49+0.08) (p>0.05). There was also not significant difference in the pH of Ameka dam, Mkpuma river and Ebonyi river. The pH of the aforementioned study areas were significantly higher that of pond water (p<0.05). Mkpuma had the highest DO content but its value does not differ significantly from that of Ebonyi river and Ameka dam (p>0.05). The DO of Enyigba river was significantly lower (p<0.05) than those of other study areas. Mkpuma river had significantly higher CO2 concentration while there was no significant difference (p<0.05) in the CO2 of Ameka dam and Pond water, and Enyigba river, Ebonyi river and Pond water. Enyigba had significantly higher transparency than those of other areas studied. This was followed by Mkpuma river but the transparency of Mkpuma does not differ significantly from those of Ebonyi river and pond water (p>0.05). Based on the research findings, the following policy recommendations were therefore proffered. World health/bank should please assist the state Government in making available good quality refined urban tap water to the villages and subborbs so as to save the lives of both Urban and Rural dwellers.

Key words: Ebonyi State, transparency, dissolved oxygen, carbon (iv) oxide, temperature