, Volume 91, Issue 1, pp 341–353 | Cite as

Particle size distribution and chemical parameters of the sediments of a shallow turbid impoundment

  • P. C. Keulder


As part of an ecosystem study of a small mesotrophic turbid impoundment in the semi-arid part of South Africa, an investigation was made of the particle size distribution, organic content and inorganic chemical composition of the sediment. Nine transects 50 m apart were made during February 1980. Sediments were sampled with an Eckman grab. The following analyses were made: size fractionation by wet sieving, cation exchange capacity, exchangeable Na, K, Ca, Mg and PO4, total P, and loss on ignition.

From the results it was clear that the finer particles, in or near the original river bed, had higher cation exchange capacity, total P, exchangeable phosphorus and organic content. Littoral areas with avian habitat and extensive macrophyte vegetation, contained coarser sediments. Organic detritus apparently migrated to the deeper part of the impoundment. Sediments of lacustrine and fluvial origin were identified by means of the Passega classification.


Impoundment sediments particle size major ions nutrients cation exchange 


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  1. Allen, G. P., 1971. Relationship between grain size parameter distribution and current pattern in the Gironde Estuary (France). J. Sed. Pet. 41: 74–86.Google Scholar
  2. Clay, E. M. & Wilhm, J., 1979. Particle size, percent organic carbon, phosphorus, mineralogy and deposition of sediments in Ham's and Arbuckle Lakes. Hydrobiologia 65: 33–38.Google Scholar
  3. Folk, R. L. & Ward, W. L., 1957. Brazos River bar: a study on the significance of grain size parameters. J. Sed. Pret. 27: 3–26.Google Scholar
  4. Frink, C., 1969. Chemical and mineralogical characteristics of eutrophic lake sediments. Soil Sci. Soc. Am. Proc. 33: 369–372.Google Scholar
  5. Hart, B. T., McGregor, R. J. & Perriman, W. S., 1976 Nutrient status of the sediments in Lake Mulwala. I. Total phosphorus. Aust. J. Mar. Freshwater Res. 27: 129–135.Google Scholar
  6. Kemp, A., 1971. Organic carbon and nitrogen in the surface sediments of Lakes Ontario, Eric and Huron. J. Sed. Pet. 41: 537–548.Google Scholar
  7. Le Roux, J. S. & Roos, Z. N. Rate of erosion inthe catchment of the Bulbergfontein Dam near Reddersburg in the Orange Free State. J. Limnol. Soc. sth. Afr. 5: 89–93.Google Scholar
  8. Passega, R., 1964. Grain size representation by C. M. patterns as a geological tool. J. Sed. Pet. 34: 830–847.Google Scholar
  9. Passega, R., 1977. Significance of C.M. diagrams of sediments deposited by suspensions. Sedimentology 24: 723–733.Google Scholar
  10. Royse, C. F., 1968. Recognition of fluvial environments by particle size characteristics. J. Sed. Pet. 38: 1171–1178.Google Scholar
  11. Rutherford, G. K., 1972. The clay mineralogy and some properties of bottom sediments of the St. Laurence River near Kingston, Ontario. Can. J. Earth Sci. 9: 1670–1676.Google Scholar
  12. Scott, W. & Mainer, D., 1936. Sedimentation in Winona Lake and Tippecanoe Lake, Kasciusko, Indiana. Proc. Ind. Acad. Sci. 45: 275–281.Google Scholar
  13. Slater, S. J. E. & Boag, A. J., 1978. The phosphorus status of the sediments of three eutrophic lakes in Victoria. Aust. J. Mar. Freshwater Res. 29: 263–274.Google Scholar
  14. Stephenson, R. A., 1970. On the use of grain size analysis in geomorphological studies. Prof. Geol. 22: 200–203.Google Scholar
  15. Thomas, R. L., 1969. A note on the relationship of grain size, clay content, quartz and organic carbon in some Lake Erie and Ontario sediments. J. Sed. Pet. 39: 803–808.Google Scholar
  16. Toth, S. J. & Ott, A. N., 1970. Characterization of bottom sediments: cation exchange capacity and exchangeable cation status. Environ. Sci. Technol. 4: 935–939.Google Scholar
  17. Tovey, N. K. & Wong, K. Y., 1978. Preparation, selection and interpretation problems in scanning electron microscope studies of sediments. In: Whalley, W. B. (Ed.) Scanning Electron Microscopy in the Study of Sediments. Geo Abstracts, Norwich. pp. 414.Google Scholar
  18. Visher, G. S., 1969. Grain size distributions and depositional processes. J. Sed. Pet. 39: 1074–1106.Google Scholar
  19. Weaver, A. v. B. & Stone, A. W., 1980. Distinguishing sub-environments of sediment deposition in reservoirs using particle size distribution parameters. J. Limnol. Soc. sth. Afr. 6: 59–65.Google Scholar
  20. Williams, J. D. H., Syers, J. K., Shukla, S. S., Harris, R. F. & Armstrong, D. E., 1971. Levels of inorganic and total phosphorus as related to other sediment parameters. Environ. Sci. Technol. 5: 1113–1120.Google Scholar

Copyright information

© Dr W. Junk Publishers 1982

Authors and Affiliations

  • P. C. Keulder
    • 1
  1. 1.Department of BotanyUniversity of the Orange Free StateBloemfonteinRepublic of South Africa

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