Authors : Dr. Kwarfwang Kevin Jack

Volume/Issue : Volume 11 - 2026, Issue 8 - August

Google Scholar : https://tinyurl.com/3yrxthjf

Scribd : https://tinyurl.com/49cjh29t

DOI : https://doi.org/10.38124/ijisrt/26aug295

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Abstract : The Ampidong Crater Lake is surrounded by settlements whose members are predominantly farmers, the tradition of the settlers and traditional beliefs some years back prevented farming on the slopes of the hills and banks of the Crater Lake but with the advent of Christianity and increase in population farming on the slopes of the hills and banks and rearing of animals are now a practice. Those anthropogenic activities add nutrients to the water in the lake through surface run-off which is seen as the possible cause of eutrophication.The laboratory results of the total nitrogen (TN) and total phosphorus [TP] showed increased nitrogen and phosphorus levels. This leads to increase plant growth reducing the expose water surface area .The solution to the increased plant growth in the water body is to prevent farming activities on the hills slopes and banks of the crater lake before it turns into a bog or marsh with the final results if not controlled may end up as a dry land. Government can take over the land surrounding the lake, fenced it and make it a center for ecotourism.

References :

1. Anderson, et al (2002). Harmful Algal Blooms and Eutrophication: Nutrient Sources, Composition and Consequences. Estuaries 25 (2002), pp 704-726
2. Anderson, J.M (1982) Effects of Nitrate Concentration in Lake Water on Phosphate Release from Sediment Water Research 16 (1982).
3. Areola, O et al (2020); Comprehensive Certificate Geography for Senior Secondary Schools. University Press Plc Ibadan. Pp 35-37
4. Chanson H. and James D.P. (2005): Siltation of Australian Reservoirs: Some Observations and Dam Safety Implications. Department of Civil Engineering.
5. Chrislock M.F, Doster E. Zitomer R.A and Wilson A.E (2013) Eutrophication: Causes, Consequences and Control in Aquatic Ecosystems. Nature Education, Knowledge 4 (4): 10 .
6. Cunningham, W.P, Cunningham, M.A and Saigo B.W (1997, 2007): Environmental Science: A Global Concern, Boston, USA, McGraw Hill. Pp. 440
7. Dung-Gwom  J.Y et al (2009), A Field Guide Manual of Plateau State, Department of Geography and Planning, Faculty of Environmental Science, University of Jos, Nigeria, Pp. 25-26.
8. Hutton L.G (1983). Field Testing of Water in Developing Countries, Unwin Brothers Limited. Pages 4-36.
9. Ilesanmi F.A (Ed. 2006). Environmental Pollution from Port Harcourt Refinery. A System Approach; Journal of Environmental Studies 2:1 Pp 32-36
10. Karen Arms (1990) Environmental Science, Saunders College Publishing, a division of Holt, Rinehart and Winston, Inc. pp 360-362.
11. Miller G.T (1994). Living in the Environment, Belmont California, Wardshort Publishing Company, 8^th Edition. Pp 41-342
12. Samaila, K. I and Kwarfang, K.J (2019). Evaluation of the Suitability of Water in Rivers for Irrigation in Northern  Nasarawa State, Nigeria. International Journal of Environmental Studies and Safety Research 4.2 Pp 1-14
13. Schindler, D.W (1974), Eutrophication and Recovery in Experimental Lakes. Implications for Lake Management Environmental Science. 184. 4139. 897.
14. United State Environmental Protection Agency. Critical Values for Total Nitrogen (TN) and Total Phosphorus (TP) in Lake Water. https://www.epa.gov. last updated, April 22, 2025.