Characterising wetland hydrology and water quality in streams and wetlands of Khalong-la-Lithunya, Lesotho (original) (raw)

Abstract

Wetland hydrology is important in understanding wetland systems, evaluating wetland functions and processes and assessing wetland conditions. Wetlands assimilate and transform pollutants and nutrients ensuring that quality water is discharged from the wetland into streams. The objective of this study was to characterise wetland hydrology and evaluate the water quality so as to determine the ecological functioning of the Khalong-la-Lithunya wetland. Wetland hydrology and water quality of the three sub-catchments were monitored from October 2015 to March 2016. Water levels in piezometers were recorded once a month and monthly water levels data for the years 2010, 2011, 2012 and 2013 previously recorded by the Millennium Challenge Account-Lesotho (MCA-L) project were integrated to this study’s data. Rainfall, piezometer and stream water were similarly obtained once every month. These were analysed for δ2H and δ18O water stable isotopes and water quality parameters determined. The estim...

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References (48)

  1. Ahmad, M. H. 2009. Municipal wastewater treatment using constructed wetland: Removal of Chemical Oxygen Demand (COD) and Total Suspended Solid (TSS). Undergraduate project paper, University of Malaysia Pahang. http://portal.ump.edu.
  2. Al-Charideh, A. and Hasan, A. 2013. Use of isotopic tracers to characterize the interaction of water components and nitrate contamination in the arid Rasafeh area (Syria). Environmental Earth Sciences 70 (1): 71 -82.
  3. Beutler, J.M. 2012. Hydrological and geochemical characterization of a restored wetland in Central Illinois. MSc. Thesis, University of Illinois at Chicago.
  4. Brown, R.M., McLelland, N.I., Deininger, R.A. and O'Connor, M.F. 1972. Water quality index -crossing the psychological barrier. Jenkis, S.H. (Ed.), Proc. Intl. Conf. on water poll. Res. Jerusalema 6: 787-797.
  5. Charkhabi, A. H. and Sakizadeh, M. 2006. Assessment of spatial variation of water quality parameters in the most polluted branch of the Anzali Wetland, Northern Iran. Polish Journal of Environmental Studies 15 (3): 395- 403.
  6. Chowdhury, R.M., Munstasir, S.Y. and Hossain, M.M. 2013. Water quality index of water bodies along Faridpur-Barical Road in Bangladesh. Global Engineers and Technologies Review 2 (3): 1-8.
  7. Dunne, E.J., Clark, M.W., Mitchell, J., Jawitz, J.W. and Reddy, K.R. 2010. Soil phosphorus flux from emergent marsh wetlands and surrounding grazed pasture uplands. Ecological Engineering 36 (10): 1392-1400.
  8. Ford, E.C. 2014. Investigating problematic hydric soils derived from red-colored glacial till in the Hartford Rift Basin of Connecticut. MSc. Thesis, University of Rhodes Island.
  9. Foster, L. D. 2007. Using frequency analysis to determine wetland hydroperiod. MSc. Thesis, University of South Florida.
  10. Gilbert, J.M., Warner, B.G., Aravena, R., Davies, J.C. and Brook, D. 1999. Mixing of floodwaters in a restored habitat wetland in Northeastern Ontario. Wetlands 19: 106-1 17.
  11. Hettiarchchi, M., Anurangi, J. and Alwis, A.D. 2011. Characterisation and description of surface water quality in the threatened urban wetlands around the city of Colombo. Journal of Wetland Ecology 5: 10 -19.
  12. Hoy, C. 2012. A hydrologic characterization of three headwater mountain wetlands in Eastern Kentucky. MSc. Thesis, University of Kentucky.
  13. Ishida, C.K., Kelly, J.J. and Gray, K.A. 2006. Effects of variable hydroperiods and water level fluctuations on denitrification capacity, nitrate removal, and benthic-microbial community structure in constructed wetlands. Ecological Engineering 28 (4): 363 -373.
  14. Jin, L., Siegel, D.I., Lautz, L.K.and Lu, Z. 2012. Identifying streamflow sources during spring snowmelt using water chemistry and isotopic composition in semi-arid mountain streams. Journal of Hydrology 470-471: 289-301.
  15. Johannesson, K.M., Kynkaanniemi, P., Ulen, B., Weisner, S.E.B. and Tonderski, K.S. 2015. Phosphorus and particle retention in constructed wetlands-A catchment comparison. Ecological Engineering 80: 20-31.
  16. Kumar, M. and Singh, Y. 2010. Intrepretation of water quality parameters for villages of Sanganer Tehsil, by using multivariate statistical analysis. Journal of Water Resources and Protection 2 (10): 860 -863.
  17. Lewis, D. B. and Feit, S. J. 2015. Connecting carbon and nitrogen storage in rural water soil to groundwater abstraction for urban water supply. Global Change Biology 21 (4): 1704 - 1714.
  18. Liescheidt, R.M. 2012. Using the O and H stable isotopes to track sources of water in constructed wetlands. MSc. Thesis, Illinois State University.
  19. Mandic-Mulec, I., Ausec, L., Danevcic, T., Levicnik- Hofferle, S., Jerman, V. and Kraigher, B. 2014. Microbial community structure and function in peat soil. Food Technology and Biotechnology 52 (2): 180 -187.
  20. Mapeshoane, B. E. 2013. Soil hydrology and hydric soil indicators of the Bokong wetlands in Lesotho. PhD Thesis, University of Free State, Bloemfontein.
  21. Matano, A., Kanangire, C.K., Anyona, D. N., Abuom, P.O., Gelder, F.B., Dida, G.O., Owuor, P.O. and Ofulla,A.V. O. 2015. Effects of land use change on land degradation reflected by soil properties along Mara River. Open Journal of Soil Science 5 (1): 20 -38.
  22. Mating, R. 2012. Physico-chemical characteristics, isotopic signatures and hydrochemistry of two-contrasting wetlands in two agro- ecological zones of Lesotho. MSc. Thesis, National University if Lesotho.
  23. McGuire, K.J., DeWalle, D.R. and Gburek, W. J. 2002. Evaluation of mean residence time in sub surface waters using oxygen -18 fluctuations during drought conditions. Journal of Hydrology, 261 (1): 132 -149.
  24. McKenzie, J.M., Siegel, D.I., Lautz, L.K., Otz, M.H., Hassett, I. And Otz, J. 2012. Water quality, contamination, and wetlands in the Croton Watershed, New York. Open Journal of Modern Hydrology 2 (1): 7 -14.
  25. Mekiso, F. A. 2011. Hydrological processes, chemical variability, and multiple isotopes tracing of water flow paths in the Kudumela Wetland-Limpopo Province. MSc. Thesis, Rhodes University, Grahamstown.
  26. Mitsch, W.J. and Gosselink, J.G. 2007. Wetlands, 4th Ed. John Wiley, New York.
  27. Mohamed, H.M. and Zahir, H.A. 2013. Study on groundwater quality at Dindigul Town, Tamilnadu, India. International Research Journal of Environmental Sciences 2 (1): 68 -73.
  28. Olaleye, A.O.,Nkheloane, T., Mating, R.,Mahlako, K., Rathebe, K., Letsika, F. and Rasekoele, M. G. 2014. Wetlands in Khalong-la-Lithunya catchment in Lesotho: Soil organic carbon contents, vegetation isotopic signatures and hydrochemistry. Catena 115: 71-78.
  29. ORASECOM. 2000. Agreement between the governments of The Republic of Botswana, The Kingdom of Lesotho, The Republic of Namibia and The Republic of South Africa on the establishment of the Orange-Senqu River Commission. www.orasecom.org.
  30. Pathak, H. and Limaye, S. N. 2011. Study of seasonal variation in groundwater quality of Sagar City (India) by Principal Component Analysis. E-Journal of Chemistry 8: 2000 - 2009.
  31. Poh, S.C. 2013. Groundwater and surface water interactions in the TinchiTamba estuarine wetland. PhD Thesis, University of Queensland.
  32. Rogers, J.S. 2006. Hydrologic and water quality characteristics of a Small Wetland -UpperDorn Creek Wetland, Wisconsin. MSc. Thesis, University of Wisconsin-Madison.
  33. Schwerdtfeger, J., Weiler, M., Johnson, M.S. and Couto, E.G. 2014. Estimating water balance components of tropical wetland lakes in the Pantanal Dry Season. Hydrological Sciences Journal 59 (12): 2158 -2172.
  34. Singh. K.P., Malik, A., Mohan, D. and Sinha, S. 2004. Multivariate statistical techniques for the evaluation of spatial and temporal variations in water quality of Gomti River (India). Water Research 38 (18): 3990-3992.
  35. Sirajudeen, J., Mohidheen, M.K. and Vahith, A. R. 2014. Physico-chemical contamination of groundwater in and around Tirunelveli district, Tamil Nadu. Advances in Applied Science Research 5 (2):49-54.
  36. Srivastava, G. and Kumar, P. 2013. Water quality index with missing parameters. International Journal of Research in Engineering and Technology 2 (4): 609-614.
  37. Stewart, M.K., Morgenstern, U. and McDonnell, J.J. 2010. Truncation of stream residence time: how the use of stable isotopes has skewed our concept of streamwater age and origin. Processes. www.interscience. wiley.com. DOI: 10.1002/hyp.7576.
  38. Tekleab, S., Wenninger, J. and Uhlenbrook, S. 2014. Characterisation of stable isotopes to identify residence times and runoff components in two meso-scale catchments. Hydrology and Earth System Sciences 18 (6): 2415-2431.
  39. Thompson, K. 2012. Hydrological assessments of ten wetlands in the Wellington region and recommendations for sustainable management: a holistic approach. www.gw.govt.nz.
  40. Troyer, N.L. 2013. Monitoring hydrology in created wetland systems with clayey soils. MSc. Thesis, Virginia Polytechnic Institute and State University. US Army Corps of Engineers. 2005. Technical standard fof water-table monitoring of potential wetland sites. WRAP Technical Notes Collection. Vicksburg, MS, US Army Engineer Research and Development Center. ERDC TN- WRAP-05-2.
  41. Usharani, K., Umarani, K., Ayyasamy, P.M., Shanthi, K. and Lakshmanaperumalsamy, P. 2010. Physico-chemical and bacteriological characteristics of Noyyal River and ground water quality of Perur, India. Journal of Applied Sciences and Environmental Management 14 (2): 29 -35.
  42. Vergeles,Y., Vystavnaa, Y, Ishchenkoa, A.,Rybalkaa, I., Marchandc, L. and Stolberga, F. 2015. Assessment of treatment efficiency of constructed wetlands. Ecological Engineering 83: 159-168.
  43. Verhoeven, J. T. A. and Meuleman, A. F. M. 1999. Wetlands for wastewater treatment: opportunities and limitations. Ecological Engineering 12 (1): 5 -12.
  44. Westbrook, C. J., Brunet, N., Phillips, I. and Davies, J. 2011. Wetland drainage effects on Prairie Water Quality. Centre for Hydrology Report, 9. University of Saskatchewan.
  45. Xiaolong, W., Jingyi, H., Ligang, Xu., Rongrong, W. and Yuwei, C. 2014. Soil characteristics in relation to vegetation communities in the wetlands of Poyang Lake, China. Wetlands 34 (4): 829 -839.
  46. Yao, N., Wang, J. and Zhou, Y. 2014. Rapid determination of the chemical oxygen demand of water using a thermal biosensor. Sensors 14 (6): 9949 -9960.
  47. Yu, X., Hawley-Howard, J., Pitt, A.L., Wang, J., Baldwin, R.F and Chow, A.T. 2015. Water quality of small seasonal wetlands in the Piedmont ecoregion, South Carolina, USA: Effects of land use and hydrological connectivity. Water Research 73: 98 -108.
  48. Yuan, R., Song, X., Zhang. Y., Han, D., Wang, S. and Tang, C. 2011. Using major ions and stable isotopes to characterize recharge regime of a fault-influenced aquifer in Beiyishui River Watershed, North China Plain. Journal of Hydrology 405 (3): 512 -521.