Department of Aquaculture and Fisheries Management
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Item Impact of aquaculture development on water quality of fish ponds in gatundu North and south sub-counties, Kenya(International Journal of Fisheries and Aquatic Studies, 2019-06) Ngugi, CC; Kitur, Esther; Wairimu, Theuri Olive; Mwangi, BM; Nzeve, JKAquaculture development in Kenya has increased in the recent past due to Government support, however, information on its influence on water quality is scanty. This study looked at the influence of fish culture on water quality in fish ponds. Water samples were collected from pond inlets and fish ponds and physico-chemical parameters analyzed. Means of measured parameters at the pond inlets were; Temp(21.27±3.31 °C), DO(4.45±0.73mg/l), EC(27.38±17.21µS/cm), TDS(368.61±135.21mg/l), pH(7.31±0.45), N-NO3(2.06±2.38mg/l) and PO4-P(0.29±0.41mg/l) while mean values inside the ponds were; Temp (23.58±3.85 °C), DO(4.89±1.09mg/L), EC(34.63±19.50µScm-1) TDS(493.13±136.67mg/l), pH(7.68±0.50), NO3(2.76±2.35mg/L) and PO4-P (1.71±1.50mg/L). Values of measured parameters were within acceptable limits for aquaculture as per WHO standards. All parameters significantly increased in pond water as compared to inlet water showing that aquaculture was contributing to deterioration of the water quality in fishponds. This calls for effluent treatment, regular monitoring and sensitization of farmers on good aquaculture practices.Item Influences of land use/cover on water quality in the upper and middle reaches of River Njoro, Kenya(Blackwell Publishing Asia Pty Ltd, 2007) Muchiri, Mucai; Shivoga, William A.; Kibichi, Samuel; Odanga, Jethro; Miller, Scott N.; Baldyga, Tracy J.; Enanga, Eric M.; Gichaba, Maina C.Item Macroinvertebrate assemblages as biological indicators of water quality in the Moiben River, Kenya(African Journal of Aquatic Science, 2010-01) Muchiri, Muchai; Raburu, P.O.; Masese, F. O.