Physico-Chemical Status of Eleyele Reservoir, Ibadan, Nigeria

An, Olanrewaju; Ajani, EK; Ok, Kareem

doi:10.4172/2155-9546.1000512

Cited by 10 publications

(5 citation statements)

References 12 publications

(24 reference statements)

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“…The overall mean monthly value measured (7.10 ± 0.25) was within the recommended range. Similar results of the mean pH range were reported by Olanrewaju et al, (2017) and Sunday and Jenyo-Oni (2018).…”

Section: Limnological Parameterssupporting

confidence: 90%

The influence of temporal variation of some limnological parameters on finfish assemblage in Osun River, Nigeria.

Iyiola

Jenyo‐Oni

2023

JoBAZ

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Background Anthropogenic activities is a major factor that determines the condition and sustainability of an environment. The nature and type of activities will determine the health, ecosystem services and general well-being of the environment. These activities have increased as a result of industrialization and urbanization, notwithstanding pressure on fish species for balanced nutrition and economic returns. The paucity of documented information about the limnological parameters and finfish assemblage in Osun River nessiciated this study. Results Mean temperature (18.7 ± 2.69 °C) and dissolved oxygen (3.2 ± 0.54 mg/L) values were below the recommended limit for fish survival, pH (7.1 ± 0.25) and ammonia (1.2 ± 0.18 mg/L) were within and above the recommended limits. The river had a total of 4544 finfish belonging to 11 families and 19 species. Chrysichthys nigrodigitatus, sampling zone A and Cichlid family had the highest abundance in the river with 21.00%, 24.20% and 32.50% respectively.Fin fish abundance had a negative relationship between dissolved oxygen (r = − 0.032), ammonia (r = − 0.668), pH (r = − 0.819); temperature and DO with ammonia(r = − 0.668, r = − 0.590) and pH (r = − 0.043, r = − 0.011) respectively. Dissolved oxygen (b = − 137.1), ammonia (b = − 522) and pH (b = − 93.4) had a negative effect on finfish assemblage in the river. Significant correlated values (p < 0.05) were observed between fin fish and temperature (p = 0.008), ammonia (p = 0.017), pH (p = 0.001). dissolved oxygen (b = − 2.14), ammonia (b = − 2.72) and pH (b = − 1.97) had a negative association with fin fish abundance while significance (p < 0.05) were observed with dissolved oxygen (p = 0.048). Conclusion It is worthy to note that human activities principally dictates the quality and quantity of limnological parameters which directly affect finfish assemblage; therefore proper environmental management is essential for sustenance of finfish in the river as elaborated by the United Nations Sustainable Development Goals.

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Section: Limnological Parameterssupporting

confidence: 90%

The influence of temporal variation of some limnological parameters on finfish assemblage in Osun River, Nigeria.

Iyiola

Jenyo‐Oni

2023

JoBAZ

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“…These values indicated that the dissolved oxygen concentration in the reservoir is tolerable for fish survival. Similar values were reported in Eleyele Reservoir [39] and Osun River [40]. These mean pH values recorded across the zones (7.00±0.00) and overall mean (7.00 ± 0.00) were within the range of 6.5 -9 as stated by USEPA [35].…”

Section: Water Qualitysupporting

confidence: 87%

“…It is imperative to properly manage our waterways because fish can serve as a biological indicator in determining the quality of the aquatic habitat in which it dwells [5]. The study of the inter-relationship between water quality and the fish environment is very important as the condition of the water determines the fish abundance and diversity [6]  [12]. Species have been reported to increase when the environmental variables are conducive and reduce when conditions are not favorable; as the condition for one species may not favor another [13].…”

Section: Introductionmentioning

confidence: 99%

Owalla Reservoir in South-western Nigeria: Assessment of Fish Distribution, Biological Diversity, and Water Quality Index

Iyiola,

Izah,

Morya

et al. 2023

Indonesian J. Agric. Res

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The Water Quality Index (WQI) was used to evaluate the ecological health and status of Owalla Reservoir and the implications on fish species distribution and biological diversity of the reservoir. Water quality and fish species were collected from three sampling zones (A, B, and C) from September 2019 to August 2020 and biological diversity indices such as dominance, Shannon-Weiner, Evenness, Brillouin, Menhinick, Margalef, Equitability, and Fishers index were calculated. The mean values measured for the temperature (25.9 ± 0.48 oC), dissolved oxygen (4.14 ± 0.10 mg/L), pH (7.0 ± 0.01), and nitrate (0.68 ± 0.25 mg/L) of Owalla Reservoir were within the recommended range; while ammonia (0.13 ± 0.20 mg/L), nitrite (0.14 ± 0.21 mg/L) were high and above the recommended limits. The WQI was highest in zone A (155.97) with an overall index value of 152.73 for the reservoir. Zone A recorded the highest relative fish abundance (49.95%) and was more diversified than other sampling zones. In terms of fish biodiversity indices, zone A had the highest richness (9), number of individuals (136), Shannon (1.84), and Brillouin (1.62) index values. Zones B and C were highest in terms of Dominance (1.0), and Evenness (1.0). Zones A and C were highest in terms of Simpson (0.83); zone B was highest in terms of Menhinick (1.58), and Fisher_alpha index (3.98) while zone C was highest in terms of Margalef (2.0), and Equitability (0.99) indices. The elevated levels of WQI, ammonia, and nitrite pose a danger to fish species and watershed systems. It is important to maintain the quality of water within Owalla Reservoir by ensuring best human practices and averting inappropriate human wastes as well as sewage disposal and agricultural activities. These should be checked for the sustainability of fish species.

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“…However, in contrast with the present nding, Woldeab et al (2018) reported higher water temperatures (22.49 to 25°C) in the dry season from the Gilgel Gibe reservoir. Similar ndings in the Eleyele reservoir (Olanrewaju et al, 2017), Ado-Ekiti reservoir (Idowu et al, 2013), Oyun reservoir (Mustapha, 2009) and Ero reservoir (Oso and Fagbuaro, 2008) also reported higher temperatures during the dry season. The low temperature observed during the rains could be due to high humidity and moderate or less sunlight in this period of the year.…”

Section: Discussionsupporting

confidence: 63%

Spatiotemporal variations of water quality parameters in selected semi-arid young reservoirs in Tigray Regional National State, northern Ethiopia

Arefayne,

Teferi,

Asmelash

et al. 2024

Preprint

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The health status of aquatic ecosystem is depended on the physicochemical and biological characteristics of water which provides significant information about the available resources for supporting life. This study aims to assess spatiotemporal variation of water quality parameters in selected young reservoirs in Tigray. Depth-integrated water samples (surface, middle, and just above bottom) werecollected bimonthly (three times during the wet and dry seasons) at each sampling siteswith a heart-valve sampler. Variation between the wet and dry seasons was examined using the independent t-test, and one-way ANOVA was used to analysis the differences among sites. We showed a significant (p < 0.05) seasonal variation in temperature, pH and transparency in all the reservoirs investigated. Kalema reservoir was recorded with highest mean value of temperature, chlorophyll a and conductivity. Mean value of pH hasa spatially significant difference (p<0.05) inall the study reservoirs except Kalema. None of the physicochemical water quality parameters in Kalema reservoir exhibited spatially significant (p>0.05) variations. Dissolved oxygen and pH showed spatially significant variation (p < 0.05) in Mihtsab Azmati and Seisa reservoirs. A significant correlation (p < 0.01) was recorded between temperature with turbidity, chlorophyll a, transparency and conductivity. The physicochemical parameters of the reservoirs showed distinct temporal and spatial variations. The result obtained in this study is very important as baseline information to know the ecology of reservoirs for future reservoir management. Further detailed studies that include total phosphorus, total nitrogen, etc., are needed to suggest the trophic conditions of the reservoirs.

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Physico-Chemical Status of Eleyele Reservoir, Ibadan, Nigeria

Cited by 10 publications

References 12 publications

The influence of temporal variation of some limnological parameters on finfish assemblage in Osun River, Nigeria.

The influence of temporal variation of some limnological parameters on finfish assemblage in Osun River, Nigeria.

Owalla Reservoir in South-western Nigeria: Assessment of Fish Distribution, Biological Diversity, and Water Quality Index

Spatiotemporal variations of water quality parameters in selected semi-arid young reservoirs in Tigray Regional National State, northern Ethiopia

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