SciELO - Scientific Electronic Library Online

vol.51 issue1Plant diversity and conservation value of wetlands along a rural-urban gradientImpact of land-use and floaw conditions on the phytoplankton of the Sabie River, South Africa author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand



Related links

  • On index processCited by Google
  • On index processSimilars in Google


Bothalia - African Biodiversity & Conservation

On-line version ISSN 2311-9284
Print version ISSN 0006-8241


SHIKWAMBANA, Purvance; TAYLOR, Jonathan C.; GOVENDER, Danny  and  BOTHA, Judith. Diatom responses to river water quality in the Kruger National Park, South Africa. Bothalia (Online) [online]. 2021, vol.51, n.1, pp.1-11. ISSN 2311-9284.

BACKGROUND: Although the Kruger National Park (KNP) is a protected area, it is not exempted from anthropogenically induced impacts, which often compromise river water flow and quality. Measures of river water quality in South Africa have conventionally been based on water chemistry as well as different ecological indicator groups such as fish and macroinvertebrates. Diatoms have been shown to be useful indicators of changes in water quality resulting from pollution and land-use impacts. OBJECTIVES: To determine the applicability of diatoms for hind-casting water quality in the KNP and to compare recent diatom community composition with those from the 1980s. METHODS: In this study, pH and electrical conductivity (EC) were used to evaluate temporal changes in water quality of three rivers within the KNP Additionally, we made use of historic diatom samples from three of the five perennial rivers to evaluate if diatom communities reflected changes in water conditions between 1983 and 2015. RESULTS: Diatom community structure was significantly different between 1983 and 2015. Diatom-based index scores (SPI) indicated an improvement in water quality for the Letaba and Olifants rivers. CONCLUSION: Diatoms were shown to be useful indicators of current water quality and are also useful for determining temporal changes.

        · text in English     · English ( pdf )


Creative Commons License All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License