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  1. Analysis of freshwater diatom deformities in the Karoo, South Africa

    Article • African Journal of Aquatic Science, December 2023, Informa UK Limited

    Dr Marion Holmes

  2. Can diatoms be used as a biomonitoring tool for surface and groundwater? Towards a baseline for Karoo water

    Article • South African Journal of Botany, October 2023, Elsevier

    Dr Marion Holmes

  3. The impact of drought in the Karoo - revisiting diatoms as water quality indicators in the upper reaches of the Great Fish River, Eastern Cape, South Africa

    Article • South African Journal of Botany, September 2022, Elsevier

    Dr Marion Holmes

  4. Diatoms as water quality indicators in the upper reaches of the Great Fish River, Eastern Cape, South Africa

    Article • African Journal of Aquatic Science, November 2015, Taylor & Francis

    Dr Marion Holmes