Application of Multivariate Statistical Methods to Assessment of Water Quality in Selected Locations of the Lagos Lagoon, Nigeria

Ladipo, M. K.; Ajibola, V.O.; Oniye, S. J.

doi:10.3923/erj.2012.141.150

Cited by 10 publications

(8 citation statements)

References 5 publications

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“…Lowest turbidity observed during the dry season could be as a result of prevailing condition of less-surface run-off. This correspond with the findings of Ladipo et al (2012).…”

Section: Resultssupporting

confidence: 56%

Effects of physico-chemical parameters on the composition and abundance of phytoplankton in Ajiwa Reservoir Katsina State, north western Nigeria

Usman¹,

Namadi²,

Nafi’u³

2018

Bayero J. Pure App. Sci.

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“…Lowest turbidity observed during the dry season could be as a result of prevailing condition of less-surface run-off. This correspond with the findings of Ladipo et al (2012).…”

Section: Resultssupporting

confidence: 56%

Effects of physico-chemical parameters on the composition and abundance of phytoplankton in Ajiwa Reservoir Katsina State, north western Nigeria

Usman¹,

Namadi²,

Nafi’u³

2018

Bayero J. Pure App. Sci.

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“…The Phosphate values in this study were above the permissible limit of 5mg/L stipulated by WHO (2008) across the sample stations except at C1, C3, C4, I2, I3 and I7 (Table 2). These results corroborate the work of Ladipo et al, (2012) who reported a mean phosphate concentrations of 9.75±3.24 mg/L in Lagos coastal water, south western Nigeria. The statistical analysis at 95% con dence level also showed signi cance differences among the sample stations.…”

Section: Resultssupporting

confidence: 92%

Distribution of Nutrients and Chlorophyll-a in coastal waters and mesotidal estuary of Ilaje, Ondo state, South Western, Nigeria.

Oyatola¹,

Nubi²,

Popoola³

et al. 2021

Preprint

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The nutrients (nitrate, nitrite, phosphate and silicate) of thirty-two stations in Ilaje, coastal waters and estuaries of Ondo state, Nigeria were studied in the month of August (during the wet season). The stations consist of two estuaries; Awoye (A1-A6), Abereke (AB1-AB7), anthropogenic impacted stations (I1-I12) and control stations (C1-C7). The aim of this study is to evaluate the eutrophication status of Ilaje coastal waters and estuaries in response to the stress caused by anthropogenic inputs from land use changes, agriculture, and industrial effluents. Our study reveal highest nitrate (3.20-6.98 mg/l) and phosphate (11.59-17.48mg/L) concentrations at the Abereke Estuaries. The significant correlation of nitrate with chlorophyll-a (p<0.01, r= +0.886) and the low N/P (<0.25) ratio suggest that nitrate is the primary limiting nutrient for phytoplankton production, and accounted for the high chlorophyll-a concentrations in the study area. The strong correlation of nitrite and silicate from the statistical bi-plots at the impacted stations, and the accompanied lowest dissolved oxygen (<5 mg/L) and acidic pH (<6) values suggest nitrite and silicate are sourced from anthropogenic effluents. The mean nitrite concentrations of 0.13mg/L at the impacted stations above the maximum permissible limit of nitrite (0.06 mg/L) for Tilapia production suggest an unfavorable environment for the Tilapia growth at the impacted stations. The chlorophyll-a concentrations scale further showed that the study area is characterized as bad eutrophication status (> 2.21 µg/L) an indication of the presence of heterogeneous phytoplankton community during the wet season. The study highlights the use of nutrients and chlorophyll-a scaling to determine the eutrophication status of coastal area.

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“…5). These results corroborate the work of Ladipo et al, (2012) who reported a mean phosphate concentrations of 9.75 ± 3.24 mg/L in the Lagos coastal water, south western Nigeria. The statistical analysis at 95% confidence level also showed significance differences among the sample stations.…”

Section: Nutrientsupporting

confidence: 92%

Distribution of Nutrients and Chlorophyll-a in a coastal waters and mesotidal estuary of Ilaje, Ondo state, South Western, Nigeria

Oyatola¹,

Popoola²,

Nubi³

et al. 2021

IJSRP

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Application of Multivariate Statistical Methods to Assessment of Water Quality in Selected Locations of the Lagos Lagoon, Nigeria

Cited by 10 publications

References 5 publications

Effects of physico-chemical parameters on the composition and abundance of phytoplankton in Ajiwa Reservoir Katsina State, north western Nigeria

Effects of physico-chemical parameters on the composition and abundance of phytoplankton in Ajiwa Reservoir Katsina State, north western Nigeria

Distribution of Nutrients and Chlorophyll-a in coastal waters and mesotidal estuary of Ilaje, Ondo state, South Western, Nigeria.

Distribution of Nutrients and Chlorophyll-a in a coastal waters and mesotidal estuary of Ilaje, Ondo state, South Western, Nigeria

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