Journal of Geosciences and Geomatics
ISSN (Print): 2373-6690 ISSN (Online): 2373-6704 Website: Editor-in-chief: Maria TSAKIRI
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Journal of Geosciences and Geomatics. 2017, 5(2), 78-86
DOI: 10.12691/jgg-5-2-4
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An Assessment of Bathymetry, Hydrochemistry and Trace Metals in Sediments of Awoye Estuary in Ilaje Area, Southwestern Nigeria

Rasheed B. ADESINA1, and Peter OGUNSEIJU1

1Department of Marine Science and Technology, Federal University of Technology Akure, Nigeria

Pub. Date: April 11, 2017

Cite this paper:
Rasheed B. ADESINA and Peter OGUNSEIJU. An Assessment of Bathymetry, Hydrochemistry and Trace Metals in Sediments of Awoye Estuary in Ilaje Area, Southwestern Nigeria. Journal of Geosciences and Geomatics. 2017; 5(2):78-86. doi: 10.12691/jgg-5-2-4


This study aimed at determining the depth profile and effects of domestic and economic activities on the accumulation of nutrients and trace metals in Awoye Estuary. Bathymetry profile along an approximately twenty-kilometre profile reveals a shallow water estuary, while its physico-chemical properties are greatly influenced by the influx of seawater, with chloride and sodium being the dominant ions. Low concentrations of calcium and potassium ion were observed across the estuary due to their preferential absorption with magnessium and sodium ion respectively. Nutrients concentrations such as phosphate and sulphate were present in relatively high amounts which can be hazardous to marine lives in the estuary, thus requiring urgent control. Results of trace metals in sediments show that concentrations of Pb, Zn, Cu, Cr and Ni are reflective of their inputs; with concentrations of Pb, Cu and Zn being higher at areas where there is high human population, oil exploration and economic activities. Generally, the estuary has fairly good water quality for the survival of marine lives. Sediments quality, however, needs to be closely monitored for ecological and public health risks associated with anthropogenic activities in the area.

bathymetry physico-chemistry nutrients trace metals estuary

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[1]  Anitha, G., Sugirtha, P. K. (2013). Physicochemical characteristics of water and sediment in Thengapattanam Estuary, southwest coastal zone, Tamilnadu, India. International Journal of Environmental Sciences. 4(3): pp. 205-222.
[2]  Adefemi, S. O., Awokunmi, E. E. (2010). Determination of physico-chemical parameters and heavy metals in water samples from Itaogbolu area of Ondo-State, Nigeria. African Journal of Environmental Science and Technology 4(3): pp. 145-148.
[3]  Oluduro, A.O., Adewoye, B.I. (2007). Efficiency of Moringa Oleifera seed extract on the microflora of surface and groundwater. Journal of plant Science 6: pp. 438-453.
[4]  Howarth, R., Aderson, D., Cloem, J., Elfring C., Hopkinson, C., Lapointe, B., Malone, T., Marcus, N., McGlathery, K., Sharpley, A., Walker D. (2000). Nutrient pollution of coastal rivers, bays and seas. Issues in Ecology 7: pp. 2-17.
[5]  Kennish, M. J., (2002). Environmental threats and environmental future of estuaries. Environmental Conservation 29 (01): pp. 78-107.
[6]  Richard, H., Ivanildo, H. (1997). Water pollution control - a guide to the use of water quality management principles. Published on behalf of the United Nations Environment Programme, the Water Supply & Sanitation Collaborative Council and the World Health Organization (WHO/UNEP).
[7]  Adebowale, K. O., Agunbiade, F. O., Olu-Owolabi, B. I. (2008). Impacts of natural and anthropogenic multiple sources of pollution on the environmental conditions of Ondo State coastal water, Nigeria. Electronic Journal of Environmental, Agriculture and Food Chemistry 7(4): pp. 2797- 2881.
[8]  Scheinberg, H.T. (1991). Copper In: Merian E. (ed). Metals and their compounds in the environment: occurrence, analysis and biological relevance. VCH New York. pp. 803-851.
[9]  Abdus-Salam, N., Adekola, F.A. (2005). The influence of pH and adsorbent concentration on adsorption of lead and zinc on a natural goethite. African Journal of Science Technology (AJST) 6(2): pp. 55-66.
[10]  Olajire, A. A., Imeokparia, E. E. (2000). A Study of the water quality of the Osun River: metal monitoring and geochemistry. Bulletin of Chemical Society of Ethiopia 14(1): pp. 1-8.
[11]  Abdus-Salam, N., Adekola F. A., Apata, A. O. (2010). A physicochemical assessment of water quality of oil producing areas of Ilaje, Nigeria. Advances in Natural and Applied Sciences 4(3): pp. 333-344.
[12]  Ajibare, A. O. (2014). Assessment of physico-chemical parameters of waters in Ilaje Local Government Area of Ondo State, Nigeria. International Journal of Fisheries and Aquatic Studies 1(5): pp. 84-92.
[13]  Croot, P.L. and Hunter, K.A. (1998). Trace Metal distributions across the continental shelf near Otago Peninsula, New Zealand. Marine Chemistry 62 (2-4): 185-201.
[14]  Ololade, I.A., Lajide, L., Amoo, I.A., Oladoja, N.A. (2008). Investigation of heavy metals contamination of edible marine seafood. African Journal of Pure and Applied Chemistry 2: pp. 121-131.
[15]  Agunbiade, F.O., Olu-Owolabi, B.I., Adebowale, K.O. (2010). Seasonal and spatial variations analysis of pollution status of Ondo coastal environment Nigeria using principal component analysis. Geochemical Journal 44: pp. 89-98.
[16]  Olorunlana, F.A. (2013). Evaluation of erodibility indices in Akoko region of Ondo State, Nigeria. Global Journal of Biology and Health Sciences 2(2): pp. 86-89.
[17]  Bruder, H. V., Lagarde, F., Leroy, M. J. F., Conghanowr, C., Engelhard, F. (2002). Application of a sequential extraction procedure to study the release of elements from municipal solid waste incineration bottom ash. Anal. Chem. Acta. 451(2): pp. 285-295.
[18]  American Public Health Association (1995). Standard methods for the examination of water and wastewater, 19th ed. Washington.
[19]  Ezeugwu, M. U., Idhoko, K.E., Nnamah, P.O., Ofuenyi, J. O (2015). Application of GIS in evaluation of coastal river bathymetry, a case study of Opobo channel, Rivers State, Nigeria. International Journal of Engineering Science Invention 4(11): pp. 54-59.
[20]  South African Water Quality Guidelines (1996). Agricultural water use: Aquaculture (2nd edn), Department of Water Affairs and Forestry of South Africa, Pretoria. Vol. 6 pp 185.
[21]  Akinnawo, S., Abiola, C., Olanipekun, E. (2016). Seasonal variation in the physico-chemical and microbial characterization of sediment and water samples from selected areas in Ondo coastal region, Nigeria. Journal of Geography, Environment and Earth Science International 5(1): pp. 1-12.
[22]  Nkwoji, J.A., Yakubu, A., Ajani, G.F., Balogun K.J., Renner K.O., Igbo, J.K., Ariyo A.A., Bello, B.O. (2010). Seasonal variations in water chemistry and benthic macro invertebrate of a southwestern Lagoon, Lagos, Nigeria. J. Am. Sci. 6 (3): pp. 85-92.
[23]  Howell, P., Simpson, D. (1994). Abundance of marine resources in relation to dissolved oxygen in Long Island sound. Estuaries 17: pp. 394-402.
[24]  United States Environmental Protection Agency (2000). Ambient aquatic life water quality criteria for dissolved oxygen (saltwater): Cape Cod to Cape Hatteras: EPA/822/R-00/12.
[25]  Ramanathan, A.L., Vaithiyanathan, P., Subramanian, V., Das, B.K. (1993). Geochemistry of the Cauvery East Coast of India. Estuaries 16(3A): pp. 459-474.
[26]  United States Environmental Protection Agency (2002). Methods for measuring the acute toxicity of effluents and receiving waters to freshwater and marine organisms (3rd edn). Washington DC EPA-821-R-02-012.
[27]  Sawyer, C. N., McCarty, P. L., Parkin, G. F. (1994). Chemistry for Environmental Engineering. McGraw-Hill Inc., New York.
[28]  Subramanian, V., Jha, P. K. (1988). Geochemical studies on the Hooghly Estuary. Mitt. Geol. Palen. Inst. SCOPE/UNEP Sonderband. Hamburg. pp. 267-288.
[29]  Cheung, K.C., Poon, B.H.T., Lan, C.Y., Wong, M.H. (2003). Assessment of metal and nutrient concentrations in river water and sediment collected from the cities in the Pearl River Delta, South China. Chemosphere 52 (2003): pp. 1431-1440.
[30]  Lu, R. (1995). Handbook of regulations on environmental protection in China. Resource for the Future, Washington DC.
[31]  Frits, V.L. (1990). The Water Encyclopedia (2nd edn). Lewis Publishers.
[32]  Legret, M., Pagotto, C. (1999). Evaluation of pollutant loadings in the runoff waters from a major rural highway. The Science of the Total Environment 235: pp. 143-150.