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Water Quality Monitoring in Kpassa Reservoir (Northen Benin): Physico-Chemical Parameters, Trophic State and N: P Ratio

Received: 17 November 2017     Accepted: 5 December 2017     Published: 12 January 2018
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Abstract

The study was carried out to assess the physico-chemical parameters, the trophic state and the N:P ratio of the Kpassa reservoir. The reservoir was studied at six sampling sites over the period going from August 2014 to May 2016. Water transparency was determined in situ with the secchi disk SDMO QUINIOU model F043SE. Chlorophyll a, NO3-, NO2-, NH4+, PO43- and total phosphorus were analyzed using the standard methods. Measures were made with the HACH DR2800 spectrophotometer. The trophic state was assessed using the Carlson’s trophic state index (TSI). The N:P ratio was evaluated using NO3-, NO2-, NH4+ and PO43- concentrations. The physico-chemical parameters investigated were: transparency (0.25-1.92m), chlorophyll a (8.2-233.46µg/L), nitrate (undetected-4.73mg/L), nitrite (undetected-0.23mg/L), ammonia (undetected-0.21mg/L), orthophosphate (0.03-1.04mg/L) and total phosphorus (0.1-3.2mg/L). The trophic state index (TSI) values oscillate between 38 and 59. The majority of the values are characteristic of mesotrophic conditions. Kpassa reservoir is eutrophic only in August 2014 at the whole studied stations. N:P ratio values vary between 0.22 and 60.46 showing that eutrophication in Kpassa reservoir is limited by phosphorus and nitrogen. Some physico-chemical parameters values are upper than the WHO and Ifremer safe limit making the reservoir water unfit for human consumption at the concerned sites and during the concerned period. It is recommended that the national company of Benin water (SONEB) sensitize the population on the rational use of the fertilizers and the adoption of water control technics in the farm. Washing and crockery activities should be also forbidden along the reservoir river. The trophic state of the reservoir seems improved compared to previous studies results. According to the N: P ratio values, measurements to be implemented for eutrophication management in Kpassa reservoir should emphasize on the control of the flow of nitrogen and phosphorus compounds.

Published in Journal of Water Resources and Ocean Science (Volume 7, Issue 1)
DOI 10.11648/j.wros.20180701.11
Page(s) 1-9
Creative Commons

This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2018. Published by Science Publishing Group

Keywords

Water Quality, Physico-Chemical Parameters, Trophic State, N: P Ratio, Kpassa Reservoir, Okpara, Parakou, Benin

References
[1] Brahy V. L’eutrophisation et l’enrichissement en nutriments. Wallonie, 18p, 2007.
[2] Sherrard NJ, Nimmo M and Llewellyn CA. Combining HPLC pigment markers and ecological similarity indices to assess phytoplankton community structure: An environmental tool for eutrophication? Science of the total environment. 2006, 361: 97-110.
[3] Dz. U. 2005/239/2019. Ustawa Prawo Wodne z dnia 18 lipca 2001 r. [Water Law Act of 18th of July, 2001].
[4] Zalewski M. Ecohydrology-the scientific background to use ecosystem properties as management tools towards sustainability of water resources. Ecological Engineering. 2000, 165, 1-8.
[5] Akindele E. O. and Olutona G. O. Water Physicochemistry and Zooplankton Fauna of Aiba Reservoir Headwater Streams, Iwo, Nigeria. Journal of Ecosystems, Volume 2014, Article ID 105405, pp. 11. Doi: 10.1155/2014/105405.
[6] Gulecal Y. and Temel M. Water Quality and Phytoplankton Diversity in Büyükçekmece Watershed, Turkey. Journal of Water Resource and Protection, 2014, 6, 55-61. DOI: 10.4236/jwarp.2014.61009.
[7] Kehayias G and Doulka E. Trophic state evaluation of a large mediterra-nean lake utilizing abiotic and biotic elements. Journal of Environmental Protection. 2014, 5, 17-28. https://doi.org/10.4236/jep.2014.51003.
[8] Carlson RE. A trophic state index for lakes. Limnology and Oceanography. 1977, 22 (2): 361-369. https://doi.org/10.4319/lo.1977.22.2.0361.
[9] Rast W, Holland M, Ryding SO. Eutrophication management framework for policymaker. MAB Digest 1, UNESCO, Paris, 1989.
[10] Hellström T. An empirical study of nitrogen dynamics in lakes. Water Environ. Res. 1996, 68, 55-65.
[11] Zogo D. Etude de l’élimination du fer et du manganèse lors de la potabilisation de l’eau d’une retenue en cours d’eutrophisation: Cas de la retenue d’eau de l’Okpara à Parakou au Bénin. Thèse de doctorat, Université d’Abomey-Calavi, Bénin, 2010.
[12] Tometin ASL, Daouda M, Zogo ND, Boukari O, Bawa LM. Eutrophication, Sediment phosphorus fractionation and short term mobility study in the surface and under profile sediment of a water dam (Okpara dam, Benin, West Africa). J. Appl. Sci., Environ. and Manage, 2013, 17, 517-526. http://dx.doi.org/10.4314/jasem.v17i4.9.
[13] Boukari TO, Mama D, Abou Y, Bawa LM. Physico-chemical features of the Kpassa reservoir, northen Benin, with emphasis on its trophic state: A preliminary study. J. of Environ. Protect., 2016, 7, 2067-2080. https://doi.org/10.4236/jep.2016.713161.
[14] Assouma K. Availability of water for the drinking water supply of the urban cen-ter of Parakou by 2025. DESS dissertation, University of Abomey-Calavi, Benin, 2008.
[15] INSAE. Provisional results of the fourth census of the Population and the dwelling. Cotonou, Benin, 2013.
[16] Suanon F, Dimon B, Mama D and Tometin AL. Study of the Sediments of the Dam of Okpara (Benin): Physico-Chemical Characterization and Speciation of Iron and Manganese. Journal of Water Resource and Protection. 2013, 5, 709-714. https://doi.org/10.4236/jwarp.2013.57071.
[17] Brabant Water and SONEB. AEP Parakou, development phase, studies report, fi-nal report. Parakou, Benin, 2014.
[18] PNE. Note of plea for the rehabilitation and the installation of a concerted mana-gement of Okpara dam, single source of AEP of the town of Parakou. Parakou, Benin, 2008.
[19] Le Barbe L. Surface water resources of Republic of Benin; ORSTOM Collection, Paris, France, 1993.
[20] Société Béninoise d’Energie et d’Eau (SBEE). Report of the hydraulic and hydrological study of Parakou zone; Ministry of Energy and Water, Cotonou, Benin, 1990.
[21] HACH. DR LANGE 2800 analysis handbook. HACH Company World Headquarter, Edition 1, Germany, 2005.
[22] Lorenzen G. Determination of chlorophyll and phaeopigments: spectro-pho-tometric equations. Limnol. Oceanogr. 1967, 12, 343-346. https://doi.org/10.4319/lo.1967.12.2.0343.
[23] Redfield JL, Ketchum BH and Richards FA. The influence of organisms on the composition of seawater. 1963 In: Hil, M. N. (ed). The sea, Willey, New York, 26-77.
[24] Dimowo B. O. Assessment of Some Physico-chemical Parameters of River Ogun (Abeokuta, Ogun State, Southwestern Nigeria) in Comparison With National and International Standards, International Journal of Aquaculture, 2013, Vol. 3, No. 15 79-84 (doi: 10.5376/ija.2013. 03.0015).
[25] Balvay G. Structure et fonctionnement du réseau trophique dans les retenues artificielles. Gestion piscicole des lacs et retenues artificielles. INRA, Paris, 39-66, 1985.
[26] Thomas S. Les différents producteurs primaires d’un petit barrage tropical africain: dynamiques et interactions (Brobo, Côte d’Ivoire). Thèse de Doctorat d’Etat, Université Paris 6, 246p, 2000.
[27] Jabari E. Structure et dynamique des populations zooplanktons de la retenue de barrage Allal El Fassi. Th. 3e cycle Université SMBA, 197p, 1998.
[28] Tuzin D and Mason. La clarification des eaux dans les lacs reservoirs. 56p, 1996.
[29] Ifremer. Mise à jour d’indicateurs du niveau d’eutrophisation des milieux lagunaires méditerranéens, Rapport final-09-2000, Tome I, 236p, 2000.
[30] Hamaidi-Chergui, F., Errahmani, M. B., Benouaklil, F. and Hamaidi, M. S. Preliminary Study on Physico-Chemical Parameters and Phytoplankton of Chiffa River (Blida, Algeria). Journal of Ecosystems, 2013, Article ID: 148793. https://doi.org/10.1155/2013/148793.
[31] WHO. Guideline for Drinking Water Quality, Vol 2, Geneva, 2008.
[32] Kumar M, Puri A. A review of permissible limits of drinking water. India J. Occup Environ Med. 2012; 16 (1): 40-44. DOI: 10.4103/0019-5278.99696.
[33] Mihale M. J. Nitrogen and Phosphorus Dynamics in the Waters of the Great Ruaha River, Tanzania. Journal of Water Resources and Ocean Science. Vol. 4, No. 5, 2015, pp. 59-71. Doi: 10.11648/j.wros.20150405.11.
[34] Pourriot R, Meybeck M. Limnologie générale. Masson, Paris. Collection Ecologie. 6-59, 1995.
[35] OCDE. Eutrophication of waters. Monitoring, assessment and control, Paris, 1982.
[36] Tometin AL. Contribution à l’identification des sources et étude de remobilisation des métaux fer et manganèse dans un contexte d’eutrophisation au sein de la retenue d’eau de l’Okpara (Bénin). Thèse de doctorat, Université d’Abomey-Calavi, Bénin, 2015.
[37] Sommer U. Nutrient status and nutrient competition of phytoplankton in a shallow, hypertrophic lake. Limnol. Oceangr. 1989, 34, 1162-1173.
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    Ousmane Touré Boukari, Moctar Limam Bawa, Daouda Mama, Youssouf Abou. (2018). Water Quality Monitoring in Kpassa Reservoir (Northen Benin): Physico-Chemical Parameters, Trophic State and N: P Ratio. Journal of Water Resources and Ocean Science, 7(1), 1-9. https://doi.org/10.11648/j.wros.20180701.11

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    Ousmane Touré Boukari; Moctar Limam Bawa; Daouda Mama; Youssouf Abou. Water Quality Monitoring in Kpassa Reservoir (Northen Benin): Physico-Chemical Parameters, Trophic State and N: P Ratio. J. Water Resour. Ocean Sci. 2018, 7(1), 1-9. doi: 10.11648/j.wros.20180701.11

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    AMA Style

    Ousmane Touré Boukari, Moctar Limam Bawa, Daouda Mama, Youssouf Abou. Water Quality Monitoring in Kpassa Reservoir (Northen Benin): Physico-Chemical Parameters, Trophic State and N: P Ratio. J Water Resour Ocean Sci. 2018;7(1):1-9. doi: 10.11648/j.wros.20180701.11

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  • @article{10.11648/j.wros.20180701.11,
      author = {Ousmane Touré Boukari and Moctar Limam Bawa and Daouda Mama and Youssouf Abou},
      title = {Water Quality Monitoring in Kpassa Reservoir (Northen Benin): Physico-Chemical Parameters, Trophic State and N: P Ratio},
      journal = {Journal of Water Resources and Ocean Science},
      volume = {7},
      number = {1},
      pages = {1-9},
      doi = {10.11648/j.wros.20180701.11},
      url = {https://doi.org/10.11648/j.wros.20180701.11},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.wros.20180701.11},
      abstract = {The study was carried out to assess the physico-chemical parameters, the trophic state and the N:P ratio of the Kpassa reservoir. The reservoir was studied at six sampling sites over the period going from August 2014 to May 2016. Water transparency was determined in situ with the secchi disk SDMO QUINIOU model F043SE. Chlorophyll a, NO3-, NO2-, NH4+, PO43- and total phosphorus were analyzed using the standard methods. Measures were made with the HACH DR2800 spectrophotometer. The trophic state was assessed using the Carlson’s trophic state index (TSI). The N:P ratio was evaluated using NO3-, NO2-, NH4+ and PO43- concentrations. The physico-chemical parameters investigated were: transparency (0.25-1.92m), chlorophyll a (8.2-233.46µg/L), nitrate (undetected-4.73mg/L), nitrite (undetected-0.23mg/L), ammonia (undetected-0.21mg/L), orthophosphate (0.03-1.04mg/L) and total phosphorus (0.1-3.2mg/L). The trophic state index (TSI) values oscillate between 38 and 59. The majority of the values are characteristic of mesotrophic conditions. Kpassa reservoir is eutrophic only in August 2014 at the whole studied stations. N:P ratio values vary between 0.22 and 60.46 showing that eutrophication in Kpassa reservoir is limited by phosphorus and nitrogen. Some physico-chemical parameters values are upper than the WHO and Ifremer safe limit making the reservoir water unfit for human consumption at the concerned sites and during the concerned period. It is recommended that the national company of Benin water (SONEB) sensitize the population on the rational use of the fertilizers and the adoption of water control technics in the farm. Washing and crockery activities should be also forbidden along the reservoir river. The trophic state of the reservoir seems improved compared to previous studies results. According to the N: P ratio values, measurements to be implemented for eutrophication management in Kpassa reservoir should emphasize on the control of the flow of nitrogen and phosphorus compounds.},
     year = {2018}
    }
    

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  • TY  - JOUR
    T1  - Water Quality Monitoring in Kpassa Reservoir (Northen Benin): Physico-Chemical Parameters, Trophic State and N: P Ratio
    AU  - Ousmane Touré Boukari
    AU  - Moctar Limam Bawa
    AU  - Daouda Mama
    AU  - Youssouf Abou
    Y1  - 2018/01/12
    PY  - 2018
    N1  - https://doi.org/10.11648/j.wros.20180701.11
    DO  - 10.11648/j.wros.20180701.11
    T2  - Journal of Water Resources and Ocean Science
    JF  - Journal of Water Resources and Ocean Science
    JO  - Journal of Water Resources and Ocean Science
    SP  - 1
    EP  - 9
    PB  - Science Publishing Group
    SN  - 2328-7993
    UR  - https://doi.org/10.11648/j.wros.20180701.11
    AB  - The study was carried out to assess the physico-chemical parameters, the trophic state and the N:P ratio of the Kpassa reservoir. The reservoir was studied at six sampling sites over the period going from August 2014 to May 2016. Water transparency was determined in situ with the secchi disk SDMO QUINIOU model F043SE. Chlorophyll a, NO3-, NO2-, NH4+, PO43- and total phosphorus were analyzed using the standard methods. Measures were made with the HACH DR2800 spectrophotometer. The trophic state was assessed using the Carlson’s trophic state index (TSI). The N:P ratio was evaluated using NO3-, NO2-, NH4+ and PO43- concentrations. The physico-chemical parameters investigated were: transparency (0.25-1.92m), chlorophyll a (8.2-233.46µg/L), nitrate (undetected-4.73mg/L), nitrite (undetected-0.23mg/L), ammonia (undetected-0.21mg/L), orthophosphate (0.03-1.04mg/L) and total phosphorus (0.1-3.2mg/L). The trophic state index (TSI) values oscillate between 38 and 59. The majority of the values are characteristic of mesotrophic conditions. Kpassa reservoir is eutrophic only in August 2014 at the whole studied stations. N:P ratio values vary between 0.22 and 60.46 showing that eutrophication in Kpassa reservoir is limited by phosphorus and nitrogen. Some physico-chemical parameters values are upper than the WHO and Ifremer safe limit making the reservoir water unfit for human consumption at the concerned sites and during the concerned period. It is recommended that the national company of Benin water (SONEB) sensitize the population on the rational use of the fertilizers and the adoption of water control technics in the farm. Washing and crockery activities should be also forbidden along the reservoir river. The trophic state of the reservoir seems improved compared to previous studies results. According to the N: P ratio values, measurements to be implemented for eutrophication management in Kpassa reservoir should emphasize on the control of the flow of nitrogen and phosphorus compounds.
    VL  - 7
    IS  - 1
    ER  - 

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Author Information
  • Department of Hydrology and Integrated Management of Water Resources, University of Abomey-Calavi, Abomey-Calavi, Benin

  • Department of Chemistry, University of Lomé, Lomé, Togo

  • Department of Hydrology and Integrated Management of Water Resources, University of Abomey-Calavi, Abomey-Calavi, Benin

  • Department of Zoology, University of Abomey-Calavi, Abomey-Calavi, Benin

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