Influence of anthropogenic activities on microbial and nutrient levels along the Mara River tributaries, Kenya

Background: A number of factors impact negatively on natural surface water resources across theworld. Although sources of surface water pollution are numerous, anthropogenic activities havebeen singled out as among the most important and of great concern. The aim of this study was toassess the influence of anthropogenic activities on nutrients and microbial levels along the Amalaand Nyangores tributaries of the Mara River in Kenya.Materials and Methods: Four sampling sites along each tributary were specifically selected fromwhich water samples were collected and analyzed for nutrients by use of spectrophotometrictechniques, and coliform bacterial presence by a multiple tube fermentation technique.Results: Higher levels of total phosphorus were recorded along the Nyangores than the Amalatributary (P= 0.02). Significant differences in phosphorus levels were recorded between differentsites along the Nyangores tributary (P=<0.001) and also along the Amala tributary (P= 0.0036).However, total nitrogen levels varied only within sites along the Nyangores tributary (P<0.0001) butnot along the Amala tributary. Similarly, Escherichia coli and total coliform levels varied significantlywithin Nyangores tributary sites. Sites with frequent and direct human and livestock contact hadhigher microbial and nutrient levels, indicative of a localized pollution effect.Conclusions: The findings imply that the health of local communities who depend on this water fordomestic use might be compromised. As such, regular monitoring, strict enforcement ofenvironmental protection laws, public education and proper sewage disposal is recommended.

Kaynakça

Anonymous (1996) Urban environment and health in ECA member states. Economic Commission for Africa, Addis Ababa.

Anonymous (2000) Measuring preferences on health system performance assessment. World Health Organization, GPE Discussion Paper No. 20, Geneva.

Anonymous (2002a) World urbanization prospects: the 2001 revision. UN Population Division.

http://www.un.org/esa/population/publications/wup2001/WUP2001_CH1.pdf (Date accessed 16.8.2013)

Anonymous (2002b) World health report: reducing risks, promoting healthy life. World Health Organization, France.

http://www.who.int/whr/2002/en/whr02_en.pdf (Date accessed 14.7.2013) Anonymous (2002c) Population and health dynamics in Nairobi informal settlements. African Population and Health Research Center, Nairobi.

Anonymous (2003a) The 1st UN world water development report: water for people, water for life. United Nations World Water Assessment Programme (UN WWAP). http://www.unesco.org/water/wwap/wwdr/wwdr1/ (Date accessed 5.9.2013).

Anonymous (2003b) Kenya Demographic and Health Survey (KDHS). Central Bureau of Statistics, Nairobi. Anonymous (2004a) Guidelines for drinking-water quality. 3rd ed., World Health Organization, Geneva.

Anonymous (2004b) Meeting the MDG drinking water and sanitation target: a mid-term assessment of progress. World Health Organization and UNICEF, Geneva, New York.Anonymous (2005)

Standard methods for water and wastewater examinations. 21st ed., American Public Health Association/American Water Works Association, Washington, DC.

Anonymous (2007a) Basic report, Kenya Integrated budget survey - 2005/06 (Revised edition). Kenya National Bureau of Statistics, Ministry of Planning and National Development, Nairobi.

Anonymous (2007b) Water quality baseline assessment report: Mara River Basin, Kenya-Tanzania. Global Water for Sustainability Program (GLOWS).

http://glows.flu.edu/glows/Portals/0/documents/Mara_WaterQuality_AssessmentReport.pdf (Date accessed 21.9.2013) Anonymous (2008a) Progress on drinking water and sanitation: special focus on sanitation. UNICEF, New York and WHO, Geneva.

Anonymous (2008b) The global burden of disease: 2004 update. WHO, Geneva. http://www.who.int/healthinfo/global_burden_disease/2004_report_update/en/index.html (Date accessed 23.9.2013)

Anonymous (2009) Better bays and waterways - a water quality improvement plan for the Port Phillip and Westernport Region. Melbourne Water and EPA Victoria, Melbourne.

Anonymous (2012a). World Urbanization Prospects: The 1999 Revision, Key Findings. The 4th United Nations World Water Development ReportUnited Nations. United Nations. http://www.un.org/esa/population/pubsarchive/urbanization/urbanization.pdf (Date accessed 17.7.2013)

Anonymous (2012b) Recreational water quality criteria -2012. Environmental Protection Agency, EPA- 820 - F - 12 - 061, Washington, DC. Baron JS, Schmidt TM, Hartman MD (2009) Climate-induced changes in high elevation stream nitrate dynamics. Global Change Biology 15: 1777-1789.

Bashir H, Kawo AH (2004) Environmental pollution: A case study of waste water effluent parameters of some industries in Kano, Nigeria. Biological and Environmental Sciences Journal for the Tropics 1(1): 1-6.

Bloomfield SF, Exner M, Fara GM, Nath KJ, Scott EA, Van der VC (2009) The global burden of hygiene-related diseases in relation to the home and community. International Scientific Forum on Home Hygiene. http://www.ifhhomehygiene.org/IntegratedCRD.nsf/111e68ea0824afe1802575070003f039/29858aa006faaa22802

572970064b6e8?OpenDocument (Date accessed 29.9.2013) Burkholder JM, Hallegraeff GM, Melia G, Cohen A, Bowers HA, Oldach DW, Parrow MW, Sullivan MJ, Zimba PV, Allen EH, Kinder CA, Mallin MA (2007) Phytoplankton and bacterial assemblages in ballast water of US military ships as a function of port of origin, voyage time, and ocean exchange practices. Harmful Algae 6(4): 486-518. http://dx.doi.org/10.1016/j.hal.2006.11.006

Byamukama D, Mach RL, Kansiime F, Manafa M, Farnleitner AH (2005) Discrimination efficacy of faecal pollution detection in different aquatic habitats of a high-altitude tropical country, using presumptive coliforms, Escherichia coli, and Clostridium perfringens spores. Applied Environmental Microbiology 71: 65-71. http://dx.doi.org/10.1128/AEM.71.1.65-71.2005

Feng P, Weagant SD, Grant MA (2002) Enumeration of Escherichia coli and the Coliform Bacteria. Bacteriological Analytical Manual (8th ed.), FDA/Center for Food Safety and Applied Nutrition. http://www.fda.gov/Food/FoodScienceResearch/LaboratoryMethods/ucm064948.htm (Date accessed 9.6.2013).

Frenzel SA, Couvillion CS (2002) Fecal-indicator bacteria in streams along a gradient of residential development. Journal of the American Water Resources Association 38 (1): 265-273. http://dx.doi.org/10.1111/j.1752-1688.2002.tb01550.x

Kanu I, Achi OK (2011) Industrial effluents and their impact on water quality of receiving rivers in Nigeria. Journal of Applied Technology in Environmental Sanitation 1(1): 75-86.

Karani P, Mutunga C (2004) Waste Water Treatment and Improved Sanitation Bureau of Environmental Analysis

International (BEA-International) Clive Wafukho Ivory Environmental Services. www.beainternational.org (Date accessed 7.6.2013)

Kelsey H, Porter DE, Scott G, Neet M, White D (2004) Using geographic information systems and regression analysis to evaluate relationships between land use and fecal coliform bacterial pollution. Journal of Experimental Marine Biology and Ecology 298(2): 197-209. http://dx.doi.org/10.1016/S0022-0981(03)00359-9

Larry W (2006) World water day: A billion people worldwide lack safe drinking water. www.environment.about.com (Date accessed 23.8. 2013)

Liu CW, Jang CS, Chen CP, Lin CN, Lou KL (2008) Characterization of groundwater quality in Kinmen Island using multivariate analysis and geochemical modeling. Hydrological Processes 22: 376-383.

Mallin MA, Williams KE, Esham EC, Lowe RP (2000) Effect of human development on bacteriological water quality in coastal watersheds. Ecological Applications 10: 1047-1056. http://dx.doi.org/10.1890/1051-0761(2000)010[1047:EOHDOB]2.0.CO;2

Matano AS, Anyona DN, Owuor PO, Abuom PO, Dida GO, Kapiyo R, Ofulla VO (2013) Effects of land use types on the levels of microbial contamination based on total coliform and Escherischia coli counts on the Mara River, East Africa. African Journal of Tropical Hydrobiology and Fisheries 13: 5-11.

Mati BM, Mutie S, Gadain H, Home P, Mtalo F (2008) Impacts of land-use/cover changes on the hydrology of the transboundary Mara River, Kenya/Tanzania. Lakes and Reservoirs: Research and Management 13: 169-177.

Mireille E, Nougang MN, Bessa HA, Blandine PT, Olive V, Noah E, Luciane M (2011) Prevalence of pathogenic strains of Escherichia coli in urban streams in the equatorial region of Cameroon (Central Africa). Journal of Applied Biosciences 48: 3293-3305.

Noble RT, Lee IM, Schif KC (2004) Inactivation of indicator microorganisms from various sources of faecal contamination in seawater and freshwater. Journal of Applied Microbiology 96(3): 464-472. http://dx.doi.org/10.1111/j.1365-2672.2004.02155.x

Okoko AA, Muia AW, Moturi WN, Oyake M (2012) Levels of E. coli contamination of River Awach and household water in western Kenya. Journal of Environmental Science and Water Resources 1(5): 120-126.

Schueler TR (1994) The importance of imperviousness. Watershed Protection Techniques (1) 3: 100-111.

Scott TM, Rose JB, Jenkins TM, Farrah SR, Lukasik J (2002) Microbial source tracking: current methodology and future directions. Applied Environmental Microbiology 68(12): 5796-5803. http://dx.doi.org/10.1128/AEM.68.12.5796-5803.2002

Shindo J, Okamoto K, Kawashima H (2006) Prediction of the environmental effects of excess nitrogen caused by increasing food demand with rapid economic growth in eastern Asian countries, 1961-2020. Ecological Modeling 193: 703-720.

Toothman BR, Cahoon LB, Mallin MA (2009) Phosphorus and carbohydrate limitation of fecal coliform and fecal enterococcus within tidal creek sediments. Hydrobiologia 636: 401-412. http://dx.doi.org/10.1007/s10750-009-9969-4

Vikaskumar G, Shah R, Hugh D, Phillip M, Geary PC, Timothy K, Roberts TR (2007) Comparisons of water quality parameters from diverse catchments during dry periods and following rain events. Water Research 41: 3655-3666.

Yillia PT, Kreuzinger N, Mathooko JK, Ndomahina ET (2009) Microbial risk assessment with the OAEL approach at water abstraction points in rural Kenya. Physics and Chemistry of the Earth 34: 790-798. http://dx.doi.org/10.1016/j.pce.2009.07.002

Zamxaka M, Pironcheva G, Muyima NYO (2004) Microbiological and physico-chemical assessment of the quality of domestic water sources in selected rural communities of the Eastern Cape Province, South Africa. Journal of Biochemistry and Microbiology 30(3): 333-340. http://dx.doi.org/10.4314%2Fwsa.v30i3.5081

Kaynak Göster

  • ISSN: 1307-9867
  • Yayın Aralığı: Yılda 0 Sayı
  • Başlangıç: 2018

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