Seasonal and Spatial Variations in Water Physicochemical Quality of Coastal Potou Lagoon (C&amp;#244;te d’Ivoire, Western Africa)

Marthe, Yéo Kandana; Lanciné, Gone Droh; Kamagaté, Bamory; Aristide, Douagui Gountoh; Ardjouma, Dembélé

doi:10.4236/jwarp.2015.79061

Cited by 10 publications

(7 citation statements)

References 30 publications

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“…The recorded low values at A4 and I6 (<5 µg/L ) could be attributed to turbidity of the water, which minimized light penetration and eventually led to low concentration of phytoplankton biomass at the two stations. In comparison to other stations, the mean concentrations of chlorophyll-a of our study area (Table 2) is lower to the reported values of Marthe et al, (2015) who recorded 19.2µg/L at Coastal Potou Lagoon, Côte d'Ivoire.…”

Section: Resultscontrasting

confidence: 94%

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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Section: Resultscontrasting

confidence: 94%

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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show abstract

“…) is lower to the reported values ofMarthe et al, (2015) who recorded 19.2µg/L at Coastal Potou Lagoon, Côte d'Ivoire. ISSN 2250-3153 This publication is licensed under Creative Commons Attribution CC BY.…”

contrasting

confidence: 83%

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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“…(), Patel and Parikh () and Marthe et al . (). The DO concentration exhibited a positive correlation with pH and negative correlations with temperature, electrical conductivity, and BOD and total dissolved solids concentrations, a trend supported by Patel and Parikh ().…”

Section: Resultsmentioning

confidence: 97%

A spatio‐temporal water quality assessment of the Beas and Sutlej Rivers at the Harike Wetland: A Ramsar site in Punjab, India

2017

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Lakes play a vital role in regulating water storage, flow of river water, and ultimately maintaining a balanced ecosystem. Spatial and temporal variations in physicochemical parameters of water in Harike Wetland, a Ramsar site in the northwestern state of Punjab, India, were studied. This study was conducted on a monthly basis from January to December 2015. The water quality was studied at ten locations from sites 1 to 10 upstream, central and downstream from Harike Lake for ten physicochemical parameters, including temperature, pH, electrical conductivity, turbidity, dissolved oxygen concentration biological oxygen demand, nitrate and phosphate concentrations and salinity. The findings of this study revealed that, except for temperature and pH, all parameters exhibited relatively higher values for the Sutlej River, compared with the Beas River, with sampling sites 5 to site 7 exhibiting intermediate results. The mean seasonal temperature variations ranged from 16.9 to 26.6 °C, the pH from 7.7 to 8.2, electrical conductivity from 223 to 303 μS cm−1 and TDS concentration from 148.7 to 180.4 ppm. Correlation analysis was conducted to assess the relations between the variables. The electrical conductivity exhibited a high positive correlation with salinity and biological oxygen demand, whereas it correlated negatively with the dissolved oxygen concentration. Box and whisker plots were also plotted for the study results to better examine the data distribution.

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Seasonal and Spatial Variations in Water Physicochemical Quality of Coastal Potou Lagoon (Côte d’Ivoire, Western Africa)

Cited by 10 publications

References 30 publications

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 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

A spatio‐temporal water quality assessment of the Beas and Sutlej Rivers at the Harike Wetland: A Ramsar site in Punjab, India

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