An assessment of the physico–chemical properties of Moro lake

Physico-Chemical Status of Eleyele Reservoir, Ibadan, Nigeria

“…These findings were consistent with the results obtained by Ovie et al [39] in Omi dam, Bolaji [17] in Eleyele Lake, Ibrahim et al [19] in Kontagora reservoir, and Mustapha and Omotosho [22] in Moro Lake. However, this result implied that dissolved oxygen which is an important factor for aquatic life and the chemical characteristics of the environment was not completely satisfactory for aquatic life in Eleyele reservoir.…”

“…There is marked variation in observed spatial alkalinity and hardness, which could be attributed to high influx of floodwater which contains suspended and dissolved materials. Total hardness was highest in wet season and conforms to the findings of Bera et al [52] on Kangsabati reservoir, Onozeyi [12] on River Ogun, Mustapha and Omotosho [22] on Moro Lake, and Garg [53] on River Mandakini. On the contrary, Hujare [54] reported high total hardness concentration during summer than rainy season and winter season.…”

“…In support of this view, Murdoch et al [47] reported that high levels of both phosphates and nitrates can lead to eutrophication, which increases algal growth and ultimately reduces dissolved oxygen in the water. Phosphate in this study is remarkably higher (1.93 ± 0.62 mgl -1 ) than 0.2-0.5 mgl -1 in Moro Lake [22] and 0.49 ± 0.51 mgl -1 in Opa Reservoir [10]. Phosphate and organic matter were also markedly higher in the rainy season than in the dry season.…”

“…The proper balance of physical, chemical, and biological properties of water in ponds, lakes and reservoirs is an essential ingredient for successful production of fish and other aquatic resources [22]. However, only few (BOD, temperature, conductivity, total alkalinity, total hardness and ions) among tested parameters in Eleyele Reservoir fell within optimum recommended range for growth and survival [31][32][33].…”

“…These include the works of Olorode et al [8] on five different rivers in River State, Hassan et al [9] on Lower Ogun River, Akindele et al [10] on Lake Tiga, Idowu et al [11] on Ado-Ekiti reservoir, Onazeyi [12] on River Ogun, Iloba [13] on Ethiope River, Ogbuagu et al [14] on Imo River, Ogunfowokan et al [15] on three reservoirs in Osun State, Essien-Ibok et al [16] on Mbo river, Bolaji [17] on Eleyele Lake catchment, Ayoola and Ajani [18] on wetland areas in Oyo State, Ibrahim et al [19] on Kontagora Reservoir, Mustapha [20] on Oyun reservoir, Fafioye et al [21] on Omi River, Mustapha and Omotosho [22] on Moro Lake, Idowu et al [23] on Lake Alau, Kolo and Oladimeji [24] on Shiroro Lake, Oniye et al [25] on Zaria dam. This work was therefore carried out to investigate some selected physical and chemical parameters of Eleyele reservoir and to make deductions on the temporal …”