References
- Udo , R. K. 1983 . “ Internal migration and development ” . In A Geography of Nigerian Development Edited by: Oguntoyinbo , J. S. 57 – 171 . Heinemann Education Books, Ibadan, Nigeria
- Obot , E. A. 1982 . “ Input and cycling of nitrogen via rain under savanna conditions in Southwestern Nigeria ” . In Selected Papers from the Man and Biosphere State-of-Knowledge Workshop Edited by: Sanford , W. W. , Yesufu , H. M. and Ayeni , J. S.O. . 377 – 392 . UNESCO and Kanji Lake Research Institute, New Bussa, Nigeria
- Muoghalu , J. I. 1999 . Chloride, hydrogen and sulphate ions deposition via precipitation at Ile-Ife, Nigeria . Nigerian J. Botany , 12 : 121 – 129 .
- Muoghalu , J. I. and Oakumen , E. A. 2000 . Nutrient content of incident rainfall, throughfall and stemflow in Nigerian Secondary lowland rainforest . Appl. Vegetat. Sci. , 3 : 181 – 188 .
- Muoghalu , J. I. and Johnson , S. O. 2000 . Interception, pH and soil content of rainfall in a Nigerian lowland rainforest . J. Ecol. , 38 : 38 – 46 .
- Isichei , A. O. , Morton , A. T. and Ekeleme , F. 1990 . Mineral nutrient flow from an inselbergs in South-western Nigeria . J. Trop. Ecol. , 6 : 479 – 492 .
- F Adeniyi , I. 1992 . The prevalence of thunder and its effect on rainwater quality at Ile-Ife, southwest Nigeria . Discov. Innov. , 4 : 41 – 51 .
- Akeredolu , F. A. 1989 . Seasonal variation in deposition rates, concentrations and chemical composition of particulate matter in Ile-Ife . Ife J. Technol. , 11 : 7 – 17 .
- WHO (World Health Organisation) . 1993 . Guideline for Drinking Water Quality , Vol. 1&2 , Geneva : WHO .
- C.E.C. Commission of European Communities . 1980 . Council Directive of 15th July 1980 relating to the quality of water intended for human consumption (80778 EEC) . Official Journal , L/229, 23
- Udo , R. K. 1989 . Geographical Regions of Nigeria, , 2nd edn , London : Heinemann .
- Adamu , S. O. 2000 . Population Census in Nigeria , . 88 – 89 . Nigeria : Ibadan . SAAL Publications (Samuel Adamu and Associates)
- Papadakis , J. 1961 . Crop Ecology in West Africa , Vol. . 2 , Rome, , FAO : UN Pub. MR/16439/1 .
- Ojo , O. 1977 . The Climates of West Africa , London : Heinemann .
- White , F. 1983 . Vegetation Map of Africa , Paris, , France : UNESCO/EATFAT/UNSO .
- Whitehead , H. G. and Feth , J. H. 1964 . Chemical composition of rain, dry fallout and bulk precipitation at Menlo Park, California, 1957–1959 . J. Geophys. Res. , 69 : 3319 – 3333 .
- APHA, ANWA, WEF . 1995 . Standard Methods for the Examination of Water and Wastewaters, , 19th edn , Washington, DC : APHA, ANWA, WEF .
- DPR Department of Petroleum Resources . 1991 . Environmental Guidelines and Standards for the Petroleum Industry in Nigeria , Lagos : Department of Petroleum Resources .
- FEPA Federal Environmental Protection Agency . 1991 . Guidelines and Standards for Environmental Pollution Control in Nigeria , Lagos : Federal Environmental Protection Agency .
- Golterman , H. L. , Clymo , R. S. and Ohnstad , M. A.M. 1978 . Methods for Physical and Chemical Analysis of Freshwaters, IBP Handbook No. 8 , Oxford : Blackwell Scientific .
- USEPA . 1983 . Methods for Chemical Analysis of Water and wastes , OH : EMSL, US Environmental Protection Agency, Cincinnati .
- C.A. Black. Methods of soil analysis . 1965 . Agronomy , Madison, WI : American Society of Agronomy . No. 9 Part 2
- Collins , C. H. and Lyne , P. M. 1979 . Microbiological Methods , London : Butterworths .
- Baker , F. J. 1967 . Handbook of Bacteriological Techniques, , 2nd edn , London : Butterworths .
- Pelzar , M. J. , Reid , D. R. and Chan , E. C.S. 1977 . Microbiological Methods, , 4th edn , New York : Tata McGraw-Hill .
- Olutiola , P. O. , Famurewa , O. and Sonntag , H. G. 1991 . An Introduction to General Microbiology, A Practical Approach , . 157 – 175 . Germany : Heidelberg . Hygiene Institut der Universitat
- Breed , R. S. , Murray , E. G.D. and Smith , N. R. 1962 . Bergey’s Manual of Determinative Bacteriology, , 7th edn , Baltimore, MD : Williams & Wilkins .
- Nie , H. H. , Hull , C. H. , Jenkins , J. G. , Steibrenner , K. and Bent , D. H. 1975 . SPSS—Statistical Package for the Social Sciences, , 2nd edn , New York : McGraw-Hill .
- Hutchinson , G. E. 1957 . A Treatise on Limnology , Vol. . 1 , New York : Wiley .
- US Atomic Energy Commission . 1970 . “ Precipitation scavenging ” . In Preceedings of a Symposium on precipitation scavenging held at Richland, WA , 2 – 4 . USAEC, Oak Ridge Tennessee . June 1970
- Akinbuwa , O. and Adeniyi , I. F. 2001 . The physico-chemical limnology of Opa reservoir, Ile-Ife Osun State Nigeria . Research Communication in Chemistry , 1 : 36 – 64 .
- Woodmansa , R. G. 1978 . Addition and losses of nitrogen in grassland ecosystems . Bioscience , 28 : 448 – 453 .
- Adeniyi , I. F. 1982 . “ Mineral input in rain freefall in the Kainji area: The total mineral content and hydrogen ion concentration (pH) ” . In Selected Papers from the Man and Biosphere State-of-Knowledge Workshop , Edited by: Sanford , W. W. , Yesufu , H. M. and Ayeni , J. S.O. . 352 – 375 . Nigeria : New Bussa . UNESCO and Kainji Lake Research Institute
- Henderson , G. S. , Harris , W. F. , Todd , D. E. Jr and Grizzard , T. 1977 . Quantity and Chemistry of throughfall as influenced by forest type and season . J. Ecol. , 65 : 365 – 374 .
- Livingstone , D. A. 1963 . “ Chemical composition of rivers lakes ” . In Data of Geochemistry Edited by: Fleschesr , M. G1 – G64 . US Geological Survey Professional Paper 440, chap. G
- McWhirter , N. D. and McWhirter , A. R. 1964 . “ Geochemical abundance of the elements ” . In Dunlop Book Facts , Edited by: McWhirter , N. D. and McWhirter , A. R. 44 London : Draghorn .
- Yasso , W. E. 1965 . Oceanography—A Study of Inner Space , Holt Rinehart & Winston .
- Kemp , P. H. 1971 . Chemistry in nature water . Water Res. , 5 : 297 – 311 .
- Cole , G. A. 1978 . A Textbook of Limnology , St. Louis, MO : Mosby .
- Richardson , D. H.S. 1981 . The Biology of Mosses , Oxford : Blackwell Scientific .
- Williams , M. E. and Rudolph , E. D. 1974 . The role of Lichens and associated fungi in the chemical weathering of rock . Mycologia , 66 : 644 – 660 .
- US National Academy of Sciences . 1977 . Drinking Water and Health. Safe Drinking Water Committee , Washington, DC : National Academy Press .
- De Zuane , J. 1996 . Handbook of Drinking Water Quality, , 2nd edn , New York : Van Nostrand Reinhold .