Hydrobiological Bulletin

, Volume 22, Issue 2, pp 113–126

Geophysical limnology of lake Oguta in Southeastern Nigeria with notes on its possible origin

  • M. I. Odigi
  • C. S. Nwadiaro
Article

Abstract

Lake Oguta is a relatively small, shallow fresh water body (flood season maximum surface area=2.48 km2; max. depth=9.30 m) but the largest natural lentic system in Southeastern Nigeria. The maximum water depth, surface water temperature, Secchi-disc-transparency and conductivity, varied seasonally with rainfall.

These parameters had ranges of 7.0–9.3 m, 24.0–31.0 °C, 0.61–4.00 m and 8.6–16.5 μS.cm−1, respectively. Weak, unstable thermal stratification developes towards midday in the warmer months (April–August).

The sedimentological data show variation in the lake's particle size distribution; with coarse sandy shores, and fine, silty clay at the deep, open area. The sediment particle size variation is related to relief, transportation and depositional processes. The lake basin is a low energy, aqueous continental depositional environment. The origin of the lake is related to the Quartenary/Holocene Eurasian glaciation which correlate with the pluvials in the tropics.

Keywords

Oguta Lake Nigeria-physical features sediments possible origin 

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References

  1. ADEBISI, A.A., 1980. The physico-chemical hydrology of a tropical season river upper Ogun, Nigeria. Hydrobiologia, 79: 157–165.CrossRefGoogle Scholar
  2. ADENIYI, I.F., 1978. Studies on the physico-chemical factors and the planktonic algae of Lake Kainji, Nigeria. Ph. D. Thesis, University of Ife, Ile-Ife, Nigeria, Volumes 1 and 2, 529 pp.Google Scholar
  3. ALLEN, J.R.L., 1964. Studies in fluviatile sedimentation six cyclothems from the Lower Oler Red st. sandstone, Anglo-Welsh Basin. Sedimentology, 3: p. 163–198.Google Scholar
  4. BURKE, K., A.B. DUROTOYE, and A.J. WHITEMAN, 1971. A dry phase South of the Sahara 20,000 years ago. W. Afri. J. Archaeol, 1: 1–8.Google Scholar
  5. EGBORGE, A.B.M., 1979. The effect of impoundment on the water chemistry of Lake Asejire, Nigeria. Freshwat. Biol., 9: 403–412.Google Scholar
  6. FOLK, R.L., 1968. Petrology of Sedimentary rocks. Hemphille's (Austin, Texas), 170 p.Google Scholar
  7. FOLK, R.L., and W.C. WARD, 1957. Brazos river bar: A study in the significance of grain size parameters. J. Sediment. Petrol., 27: 3–36.Google Scholar
  8. FRIEDMAN, G.M. and K.G. JOHNSON, 1983. Exercise in sedimentology. New York, John Wiley & Co.Google Scholar
  9. IMEVBORE, A.M.A., 1967. Hydrology and plankton of Eleiyele reservoir, Ibadan, Nigeria. Hydrobiologia, 30: 104–176.CrossRefGoogle Scholar
  10. IMEVBORE, A.M.A., 1975. The chemistry of Kainji Lake waters, 1968–1969. In: Imevbore, A.M.A. & Adegoke, O.S., (eds.), The econology of the Lake Kainji—the transition from river to lake. University of Ife Press, Ile-Ife, Nigeria, 209 pp.Google Scholar
  11. ITA, E.O. and J. BALOGUN, 1983. A preliminary survery of the fisheries of Oguta Lake. Report to the Anambra/Imo River Basin Development Authority, Owerri, Imo State, Nigeria, 49 pp.Google Scholar
  12. KRUMBEIN, W.C. and L.L. SLOSS, 1934. Stratigraphy and Sedimentation. San Francisco Freeman and Company. 2nd Ed., p. 93–147.Google Scholar
  13. LOZAN CONSULTANTS, 1976. Preliminary study of the possibility of using Oguta Lake as a port. A report to the government of former East Central State Government, 86 p.Google Scholar
  14. MACHLACHLAN, S., 1961. Physical and chemical characteristics of bottom deposits. In: Lake Kariba fisheries Research Institute symposium. pp. 43–46.Google Scholar
  15. NWADIARO, C.S., N.A. ORANUSI, and S.N. UMEHAM, 1982. Preliminary survey of the drinking water quality of some areas in Imo and River States of Nigeria. Proc. 3rd National Conference on Water pollution, pp. 40–49, Federal Ministry of Works Lagos. Nigeria.Google Scholar
  16. NWADIARO, C.S., and P.U. OKORIE, 1985. Biometric characteristics, length/weight relationship and condition factors inChrysichthys filamentosus (Pisces: Bagridae) from Oguta Lake, Imo State Nigeria. Biologia Africana, 2(1): 48–57.Google Scholar
  17. NWADIARO C.S., and S.N. UMEHAM, 1985. The chemical hydrology of Oguta Lake, Imo State, South Eastern Nigeria. Arch. Hydrobiol., 105: 251–269.Google Scholar
  18. NWADIARO, C.S., and P.U. OKORIE, 1986. Some aspects of the reproductive biology ofChrysichthys filamentosus (Teleostei: Bagridae) in Oguta Lake, Nigeria. Rev. Zool. Afri., 99: 233–241.Google Scholar
  19. NWADIARO, C.S., and E. OJI, 1986. Phytoplankton productivity and chlorophyll-a concentration of Oguta Lake, Imo State, Nigeria. Hydrobiol. Bull. 19(2): 128–131.Google Scholar
  20. NWADIARO, C.S., and P.U. OKORIE, 1987. Food and feeding habits of the African bagrid.Chrysichthys filamentosus in Oguta Lake, South Eastern Nigeria. Jap. J. Ichtyl, 33/34: 376–383Google Scholar
  21. NWADIARO, C.S. In press. Preliminary observations on the nature, taxonomic composition, distribution, behaviour and nutrient requirements of the unusual algal jellies of Oguta Lake. Int. Rev. Ges. Hydrobiol.Google Scholar
  22. OLANIYAN, C.I.O., 1961. The seasonal variation in the hydrology and plankton of Lagoons of southwest Nigeria.Google Scholar
  23. POTTER, E.P., 1978. Significance and origin of big rivers. J. Geol., 86: 13–33.Google Scholar
  24. REYMENT, R.A., 1965. Aspects of the geology of Nigeria, Ibadan University Press, Ibadan, Nigeria.Google Scholar
  25. ROGERS, A.S., A.M.A. IMEVBORE, and O.S. ADEGOKE, 1969. Physical and chemical properties of Okogosi warm spring, Western Nigeria. J. Min. Geol., 4: 69–81.Google Scholar
  26. RYDER, R.A. 1965. A method for estimating the potential fish production of north temperate lakes. Trans. Am. Fish. Soc., 94(3): 214–218.Google Scholar
  27. SHORT, K.C. and A.J. STAUBEL, 1967. Outline of the geology of the Nigeria Delta. A.A.P.G. Bull., 51: 761–779.Google Scholar
  28. THOMAS, J.D., and P.J. RATCLIFFE, 1973. Observations on Limnology and primary production of a small man-made lake in West African Savannah. Freshwat. Biol., 3: 573–612.Google Scholar
  29. WAYLAND, E.J., 1929. African pluvial periods. Nature, London, 123: 607 pp.Google Scholar
  30. WELCH, P.S., 1948. Limnological Methods. McGraw-Hill Co. Ltd., N.Y. U.S.A., 381 pp.Google Scholar
  31. WETZEL, R.G., and G.E. LIKENS, 1979. Limnological analysis. W.B. Saunders Co. Ltd., Philadelphia, N.Y. U.S.A.Google Scholar

Copyright information

© Netherlands Hydrobiological Society 1988

Authors and Affiliations

  • M. I. Odigi
    • 1
  • C. S. Nwadiaro
    • 2
  1. 1.Department of Geology (Hydrobiology Unit)University of Port HarcourtPort HarcourtNigeria
  2. 2.Department of Zoology (Hydrobiology Unit)University of Port HarcourtPort HarcourtNigeria

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