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


The study investigates the seasonal and spatial variations in water quality parameters at four different locations along Potou lagoon for seventeen consecutive months. In order to explore spatial variation among different stations and seasonal changes, no parametric test of ANOVA was used to compare the mean values of the tested parameters for all the different sampling sites and seasons. Seasonal observations on water quality parameters and chlorophyll-a in Potou coastal lagoon revealed that the coastal water was significantly influenced by freshwater during the long and short rainy seasons. The seasonal significant variation (p < 0.05) was generally recorded between the long dry season and the short rainy season. Temperature, salinity, pH, dissolved oxygen, transparency and chlorophyll-a increased during the long dry season, whereas, the concentration of nutrients (nitrite, nitrate, ammonium and soluble reactive phosphorus) increased in the rainy periods. Contrary to the seasonal variation, a spatial homogeneity (horizontal) was registered for all variables, a condition related to the low human occupation in the lagoon watershed. Comparing this study with others conducted in Potou lagoon in 2008, no critical differences that evidence alteration in the water quality were found.

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Marthe, Y. , Lanciné, G. , Bamory, K. , Aristide, D. and Ardjouma, D. (2015) Seasonal and Spatial Variations in Water Physicochemical Quality of Coastal Potou Lagoon (Côte d’Ivoire, Western Africa). Journal of Water Resource and Protection, 7, 741-748. doi: 10.4236/jwarp.2015.79061.

Conflicts of Interest

The authors declare no conflicts of interest.


[1] Gantidis, N., Pervolarakis, M. and Fytianos, K. (2007) Assessment of the Quality Characteristics of Two Lakes (Koronia and Volvi) of N. Greece. Environmental Montitoring and Assessment, 125, 175-181.
[2] Arain, M.B., Kazi, T.G., Jamali, M.K., Jalbani, N., Afridi, H.I. and Shah, A. (2008) Total Dissolved and Bioavailable Elements in Water and Sediment Sample and Their Accumulation in Oreochromis mossambicus of Polluted Manchar Lake. Chemosphere, 70, 1845-1856.
[3] Bose, R., De, A., Sen, G. and Mukherjee, A.D. (2012) Comparative Study of the Physico-Chemical Parameters of the Coastal Waters in Rivers Matla and Saptamukhi: Impacts of Coastal Water Coastal Pollution. Journal of Water Chemistry and Technology, 34, 246-251.
[4] Kjerve, B. (1994) Coastal Lagoons. In: Kjerfve, B., Ed., Costal Lagoon Processes, Elsevier, Amsterdam, 1-8.
[5] Esteves, F.A., Caliman, A., Santangelo, J.M., Guariento, R.D., Farjalla, V.F. and Bozelli, R.L. (2008) Neotropical Coastal Lagoons: An Appraisal of Their Biodiversity, Functioning, Threats and Conservation Management. Brazilian Journal of Biology, 68, 967-981.
[6] Ahmed, F., Bibi, M.H., Seto, K., Ishiga, H., Fukushima, T. and Roser, B.P. (2010) Abundances, Distribution, and Sources of Trace Metals in Nakaumi-Honjo Coastal Lagoon Sediments, Japan. Environmental Monitoring and Assessment, 167, 437-491.
[7] Gikas, G.D., Yiannakopoulou, T. and Tsihrintzis, V.A. (2006) Water Quality Trends in a Coastal Lagoon Impacted by Non-Point Source Pollution after Implementation of Protective Measures. Hydrobiologia, 563, 385-406.
[8] Pereira, P., Pablo, H., Vale, C., Franco, V. and Nogueira, M. (2009) Spatial and Seasonal Variation of Water Quality in an Impacted Coastal Lagoon (óbidos Lagoon, Portugal). Environmental Monitoring and Assessment, 153, 281-292.
[9] Specchiulli, A., Renzi, M., Scirocco, T., Cilenti, L., Florio, M. and Breber, P. (2010) Comparative Study Based on Sediment Characteristics and Macrobenthic Communities in Two Italian Lagoons. Environmental Monitoring and Assessment, 160, 237-256.
[10] Piyankarage, S.C., Mallawatantri, A.P., Matsuno, Y. and Pathiratne, K.A.S. (2004) Human Impacts and the Status of Water Quality in the Bundala RAMSAR Wetland Lagoon System in Southern Sri Lanka. Wetlands Ecology Management, 12, 473-482.
[11] Altun, O., Saçan, M.T. and Erdem, A.K. (2009) Water Quality and Heavy Metal Monitoring in Water and Sediment Samples of the Küçükçekmece Lagoon, Turkey (2002-2003). Environmental Monitoring and Assessment, 151, 345-362.
[12] Panigrahi, S., Wikner, J., Panigrahy, R.C., Satapathy, K.K. and Acharya, B.C. (2009) Variability of Nutrients and Phytoplankton Biomass in a Shallow Brackish Water Ecosystem (Chilika Lagoon, India). Limnology, 10, 73-85.
[13] Christia, C., Papastergiadou, E., Papatheodorou, G., Geraga, M. and Papadaki, E. (2014) Seasonal and Spatial Variations of Water Quality, Substrate and Aquatic Macrophytes Based on Side Scan Sonar, in an Eastern Mediterranean Lagoon (Kaiafas, Ionian Sea). Environmental Earth Science, 71, 3543-3558.
[14] Koné, Y.J.M. (2008) Dynamics of Carbon Dioxide and Methane in the Mangroves of Vietnam, and the Rivers and the Lagoons of Ivory Coast. Thèse de Doctorat à la Faculté des Sciencesà l’Université de Liège, Belgique, 205 p.
[15] N’Guessan, Y.A. (2008) Analyse Morphologique, sédimentologique et environnement de dépôts des sédiments superficiels des lagunes Adjin et Potou (Zone littorale de la côte d’ivoire). Thèse de Doctorat à l’UFR des Sciences de la Terre et des Ressources Minières de l’Université de Cocody à Abidjan à la Faculté, 169 p.
[16] N’Guessan, Y.A., Wognin, V., Coulibaly, A., Monde, S., Wango, T.E. and Aka, K. (2011) Analyse granulométrique et environnement de dépôts des sables superficiels de la lagune Adjin (Côte d’Ivoire). Revue Paralia, 4, 6.1-6.14.
[17] Traoré, A., Soro, G., Kouadio, E.K., Bamba, B.S., Oga, M.S., Soro, N. and Biemi, J. (2012) Evaluation des paramètres physiques, chimiques et bactériologiques des eaux d’une lagune tropicale en période d’étiage: La lagune Aghien (Côte d’Ivoire). International Journal of Biological and Chemical Science, 6, 7048-7058.
[18] Lorenzen, C.J. (1967) Determination of Chlorophyll and Phaeopigments: Spectrometric Equations. Limnology & Oceanography, 12, 343-346.
[19] Gantidis, N., Pervolarakis, M. and Fytianos, K. (2007) Assessment of the Quality Characteristics of Two Lakes (Koronia and Volvi) of N. Greece. Environmental Monitoring and Assessment, 125, 175-181.
[20] Wetzel, R.G. (2001) Limnology: Lake and River Ecosystems. Academic Press, San Diego.
[21] Cardoso, L.S., Silveira, A.L.L. and Marques, D.M.L.M. (2003) Aação do vento como gestor da hidrodinamica na lagoa Itapeva (Litoral norte do Rio Grande Sul—Brasil). Revista Brasileira de Recursos Hídricos, 8, 5-15.
[22] Koné, Y.J.M., Abril, G., Kouadio, K.N., Delille, B. and Borges, A.V. (2008) Seasonal Variability of Carbon Dioxide in the Rivers and Lagoons of Ivory Coast (West Africa). Estuaries and Coasts, 32, 246-260.
[23] Branco, C.W.C., Esteves, F.A. and Kozlowsky-Suzuki, B. (2000) The Zooplankton and Other Limnological Features of a Humic Coastal Lagoon (Lagoa Comprida, Macaé, R.J.) in Brazil. Hydrobiologia, 437, 71-81.
[24] Briand, J.F., Robillot, C., Quiblier-Lloberas, C., Humbert, J.F., Coutè, A. and Bernard, C. (2002) Environmental Context of Cylindrospermopsis raciborskii (Cyanobacteria) Blooms in a Shallow Pond in France. Water Research, 36, 3183-3192.
[25] Figueredo, C.C. and Giani, A. (2009) Phytoplankton Community in the Tropical Lake of Lagoa Santa (Brazil): Conditions Favoring a Persistent Bloom of Cylindrospermopsis raciborskii. Limnologica, 39, 264-272.
[26] Yao, K.M. (2009) Contribution à l’étude des paramètres physico chimiques des eaux de la lagune Ebrié dans la zone d’Abidjan (Côte d’Ivoire). Thèse de Doctorat à la Faculté des Sciences à l’université de Cocody, 155 p.
[27] Panigrahi, S., Acharya, B.C., Panigrahy, R.C., Nayak, B.K., Banarjee, K. and Sarkar, S.K. (2007) Anthropogenic Impact on Water Quality of Chilika Lagoon RAMSAR Site: A Statistical Approach. Wetland Ecology Management, 15, 113-126.
[28] Chagas, G.G. and Suzuki, M.S. (2005) Seasonal Hydrochemical Variation in a Tropical Coastal Lagoon (Açu Lagoon, Brazil). Brazilian Journal of Biology, 65, 597-607.
[29] Coelho, S., Gamito, S. and Pérez-Ruzafa, A. (2007) Trophic State of Foz de Almargem Coastal Lagoon (Algarve, South Portugal) Based on Water Quality and the Phytoplankton Community. Estuarine, Coastal and Shelf Science, 71, 218-231.
[30] Lacerda, L.D. and Gonçalves, G.O. (2001) Mercury Distribution and Speciation in Waters of the Coastal Lagoons of Rio de Janeiro, SE Brazil. Marine Chemistry, 76, 47-58.
[31] Maced, M.F., Duarte, R., Mendes, R. and Ferreira, J.G. (2001) Annual Variation of Environmental Variables, Phytoplankton Species Composition and Photosynthetic Parameters in a Coastal Lagoon. Journal of Plankton Research, 23, 719-732.
[32] Pereira, A.A., van Hattum, B., Brouwer, A., van Bodegom, P.M., Rezende, C.E. and Salomons, W. (2006) Effects of Iron-Ore Mining and Processing on Metal Bioavailability in a Tropical Coastal Lagoon. Journal of Soils and Sediments, 8, 239-252.
[33] Esteves, F.A., Ishii, I.H. and Camargo, A.F.M. (1984) Pesquisas limnológicas em 14 lagoas do litoral do Estado do Rio de Janeiro. In: Lacerda, L.D., Araújo, D.S.D., Cerqueira, R. and Turcq, B., Eds., Restingas: Origem, estrutura, processos, CEUFF, Niterói, 443-454.
[34] Lloret, J., Marín, A. and Marín-Guirao, L. (2008) Is Coastal Lagoon Eutrophication Likely to Be Aggravated by Global Climate Change? Estuarine, Coastal and Shelf Science, 78, 403-412.
[35] Pedrozo, C.S. and Rocha, O. (2006) Zooplankton and Water Quality of Lakes of the Northern Coast of Rio Grande do Sul State, Brazil. Acta Limnologica Brasiliensia, 17, 445-464.
[36] Phlips, E.J., Badylak, S. and Grosskopf, T. (2002) Factors Affecting the Abundance of Phytoplankton in a Restricted Subtropical Lagoon, the Indian River Lagoon, Florida, USA. Estuarine, Coastal and Shelf Science, 55, 385-402.
[37] González, F.U.T., Herrera-Silveira, J.A. and Aguirre-Macedo, M.L. (2008) Water Quality Variability and Eutrophic Trends in Karstic Tropical Coastal Lagoons of the Yucatán Peninsula. Estuarine, Coastal and Shelf Science, 76, 418-430.

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