Phycological Effects of Eutrophication with Fertilizers in Nike Lake, Nigeria
Nkechinyere Onyekwere Nweze, Ugochi Elizabeth Onyishi
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DOI: 10.4236/jwarp.2011.312095   PDF    HTML     5,378 Downloads   9,652 Views   Citations

Abstract

Agriculture around Nike lake uses fertilizers. Fertilizers are known to cause eutrophication of water bodies and associated algal blooms whose consequences may be deleterious to the environment and man. We investigated ex situ to assess the effect of the nutrients on the algal flora and show the impact of farm land runoffs on aquatic environment. The lake water was analysed for initial nitrogen, phosphorus and potassium; and algal content using standard methods. The fertilizer sources used by the farmers—NPK (20:10:10 and 15:15:15); urea and poultry drops, were used in the study to enrich the lake water in concentrations of 0.2, 0.4, 0.6, 1.0 and 2.0 g/L in three replicates respectively. A control was set up without the fertilizer sources and the set up was left on a laboratory bench and monitored for 36 days. Cyanobacteria (blue green algae), Chlorophyta (green algae) and Bacillariophyta (diatoms) were encountered and their population increased with time and increase in concentration of fertilizers. The following taxa were encountered—Gloeocapsa, Anabaena, Oscillatoria (blue-green algae); Chlorella, Chlamydomonas, Spirogyra, Closterium, Pediastrum, Ankistrodesmus, Selenastrum, Scenedesmus, Staurastrum (green algae); Pinnularia and Navicula (diatoms) some of which are notable bloom forming species.

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N. Nweze and U. Onyishi, "Phycological Effects of Eutrophication with Fertilizers in Nike Lake, Nigeria," Journal of Water Resource and Protection, Vol. 3 No. 12, 2011, pp. 856-860. doi: 10.4236/jwarp.2011.312095.

Conflicts of Interest

The authors declare no conflicts of interest.

References

[1] V. A. Elizarova, “The Effects of Near-Bottom Water in the Rybinsk Reservoir on Planktonic Diatoms,” Main- taining the Environment, Vol. 1, 2004, pp. 35-37.
[2] N. O. Nweze and N. A. Domrufus, “Limnological Studies on Nike Lake, Enugu, Enugu State—The Metaphyton and Some Physic-Chemical Aspects,” Nigerian Journal of Bo- tany, Vol. 19, No. 2, 2006, pp. 396-404.
[3] D. Harper, “Eutrophication of Freshwaters: Principles, Pro- blems and Restoration,” Chapman and Hall, London, 1992, p. 327.
[4] A. D. Boney, “Phytoplankton,” Chapman and Hall, New York, 1989, p. 118.
[5] P. H. Graham, “Phytoplankton Ecology: Structure, Func- tion and Fluctuation,” Chapman and Hall, London, 1986, p. 384.
[6] A. E. Thomas, “The progress of Eutrophication in Central European Lakes,” In: Eutrophication: Causes, Consequen- ces, Correctives, National Academy of Sciences, Wash- ington DC, 1996, pp. 17-28.
[7] S. N. Levine and D. N. Schindler, “Phosphorus, Nitrogen and Carbon Dynamics of Experimental Lake 303 during Recovery from Eutrophication,” Canadian Journal of Fi- sheries and Aquatic Sciences, Vol. 46, No. 1, 1989, pp. 2- 10. doi:10.1139/f89-001
[8] C. N. Sawyer, “Fertilization of Lakes by Agriculture and Industrial Drainage,” New England Water Works Associa- tion, Vol. 69, 1986, pp. 109-127.
[9] E. G. Bellinger, “A Key to Common Algae. Freshwater, Estuarine and Some Coastal Species,” 4th Edition, Insti- tute of Water and Environment, London, 1992, p. 138.
[10] G. W. Prescott, “How to know the Freshwater Algae,” W.M.C. Company Publishers, Iowa, 1964, p. 272.
[11] H. Belcher and E. Swale, “A Beginners Guide to Fresh- water Algae,” Her Majesty’s Stationery Office, London, 1976, p. 47.
[12] American Public Health Association (APHA), “Standard Methods for Examination of Water, Sewage and Waste Water,” American Public Health, Washington DC, 1985, p. 769.
[13] T. Morris, “Harmful Algal Blooms in North Carolina: Blue Greens and Human Health,” Division of Public Health, North Carolina Department of Health and Human Services, 2003, p. 7.
[14] M. W. Brunson, C. Greg Lutz and R. M. Durborow, “Algae Blooms in Commercial Fish Production Ponds,” Southern Regional Aquaculture Center (SRAC) Publica- tion No. 466, 1994. http://aquanic.org/publicat/usda_rac/efs/srac/466ff.pdf
[15] World Health Organisation (WHO), “Water-Related Di- seases,” World Water Day 2001 Publication, WHO, Ge- neva, 2007. http://www.who.int/en
[16] R. E. Lee, “Phycology,” 4th Edition, Cambridge University Press, New York, 2008, p. 645.

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