All Stories

  1. Zambian Invertebrate Scoring System (ZISS): A macroinvertebrate-based biotic index for rapid bioassessment of southern tropical African river systems

    Article • African Journal of Aquatic Science, November 2018, Taylor & Francis

    Dr Helen Fiona Dallas

  2. Relationships of water temperature and aquatic macroinvertebrate community structure with non-native riparian plant densities in the southern Cape, South Africa

    Article • African Journal of Aquatic Science, September 2018, Taylor & Francis

    Dr Helen Fiona Dallas

  3. Vulnerability of Cape Fold Ecoregion freshwater fishes to climate change and other human impacts

    Article • Aquatic Conservation Marine and Freshwater Ecosystems, December 2017, Wiley

    Dr Helen Fiona Dallas

  4. Environmental drivers of aquatic macrophyte communities in southern tropical African rivers: Zambia as a case study

    Article • Aquatic Botany, July 2015, Elsevier

    Dr Helen Fiona Dallas

  5. Tanzania River Scoring System

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

    Dr Helen Fiona Dallas, Dr Lulu Tunu Kaaya

  6. Assessing the relative culpability of Simulium (Diptera: Simuliidae) species in recent black fly outbreaks along the middle Orange River, South Africa

    Article • Canadian Journal of Zoology, June 2014, Canadian Science Publishing

    Dr Helen Fiona Dallas

  7. Ecological consequences of global climate change for freshwater ecosystems in South Africa

    Article • South African Journal of Science, January 2014, Academy of Science of South Africa

    Dr Helen Fiona Dallas

  8. Towards setting environmental water temperature guidelines: A South African example

    Article • Journal of Environmental Management, October 2013, Elsevier

    Dr Helen Fiona Dallas

  9. Bioassessment in ephemeral rivers: constraints and challenges in applying macroinvertebrate sampling protocols

    Article • African Journal of Aquatic Science, March 2013, Taylor & Francis

    Dr Helen Fiona Dallas

  10. Ecological status assessment in mediterranean rivers

    Article • Hydrobiologia, September 2012, Springer Science + Business Media

    Dr Helen Fiona Dallas

  11. LIFE HISTORY DOES MATTER IN ASSESSING POTENTIAL ECOLOGICAL IMPACTS OF THERMAL CHANGES ON AQUATIC MACROINVERTEBRATES

    Article • River Research and Applications, July 2012, Wiley

    Dr Helen Fiona Dallas

  12. Prediction of water temperature metrics using spatial modelling in the Eastern and Western Cape, South Africa

    Article • Water SA, May 2012, African Journals Online (AJOL)

    Dr Helen Fiona Dallas, Dr Sukhmani Kaur Mantel

  13. Micro-scale heterogeneity in water temperature

    Article • Water SA, October 2011, African Journals Online (AJOL)

    Dr Helen Fiona Dallas

  14. Critical Thermal Maxima of aquatic macroinvertebrates: towards identifying bioindicators of thermal alteration

    Article • Hydrobiologia, August 2011, Springer Science + Business Media

    Dr Helen Fiona Dallas

  15. Upper thermal limits of aquatic macroinvertebrates: Comparing critical thermal maxima with 96-LT50 values

    Article • Journal of Thermal Biology, August 2011, Elsevier

    Dr Helen Fiona Dallas

  16. Multi-scale assessment of macroinvertebrate richness and composition in Mediterranean-climate rivers

    Article • Freshwater Biology, April 2008, Wiley

    Dr Helen Fiona Dallas

  17. The effect of biotope-specific sampling for aquatic macroinvertebrates on reference site classification and the identification of environmental predictors in Mpumalanga, South Africa

    Article • African Journal of Aquatic Science, August 2007, Taylor & Francis

    Dr Helen Fiona Dallas

  18. A preliminary survey and analysis of the spatial distribution of aquatic invertebrates in the Okavango Delta, Botswana

    Article • African Journal of Aquatic Science, May 2007, Taylor & Francis

    Dr Helen Fiona Dallas

  19. The influence of biotope availability on macroinvertebrate assemblages in South African rivers: implications for aquatic bioassessment

    Article • Freshwater Biology, February 2007, Wiley

    Dr Helen Fiona Dallas

  20. Bioassessment of the ecological integrity of river ecosystems using aquatic macroinvertebrates: an overview with a focus on South Africa

    Article • African Journal of Aquatic Science, November 2006, Taylor & Francis

    Dr Helen Fiona Dallas

  21. Natural variation in macroinvertebrate assemblages and the development of a biological banding system for interpreting bioassessment data—a preliminary evaluation using data from upland sites in the south-western Cape, South Africa

    Article • Hydrobiologia, October 2006, Springer Science + Business Media

    Dr Helen Fiona Dallas

  22. A comparison of rapid bioassessment protocols used in 2 regions with Mediterranean climates, the Iberian Peninsula and South Africa

    Article • Journal of the North American Benthological Society, June 2006, University of Chicago Press

    Dr Helen Fiona Dallas

  23. Preliminary testing of the Integrated Habitat Assessment System (IHAS) for aquatic macroinvertebrates

    Article • African Journal of Aquatic Science, January 2006, Taylor & Francis

    Dr Helen Fiona Dallas

  24. Spatial variability in macroinvertebrate assemblages: comparing regional and multivariate approaches for classifying reference sites in South Africa

    Article • African Journal of Aquatic Science, August 2004, Taylor & Francis

    Dr Helen Fiona Dallas

  25. Seasonal variability of macroinvertebrate assemblages in two regions of South Africa: implications for aquatic bioassessment

    Article • African Journal of Aquatic Science, August 2004, Taylor & Francis

    Dr Helen Fiona Dallas

  26. Delineation of management regions for South African rivers based on water chemistry

    Article • Aquatic Ecosystem Health & Management, January 1998, Taylor & Francis

    Dr Helen Fiona Dallas

  27. A PRELIMINARY EVALUATION OF ASPECTS OF SASS (SOUTH AFRICAN SCORING SYSTEM) FOR THE RAPID BIOASSESSMENT OF WATER QUALITY IN RIVERS, WITH PARTICULAR REFERENCE TO THE INCORPORATION OF SASS IN A NATIONAL BIOMONITORING PROGRAMME

    Article • Southern African Journal of Aquatic Sciences, January 1997, Taylor & Francis

    Dr Helen Fiona Dallas

  28. WATER EXCHANGE, TEMPERATURE TOLERANCE, OXYGEN CONSUMPTION AND ACTIVITY OF THE NAMIB DESERT SNAIL, TRIGONEPHRUS SP.

    Article • Journal of Molluscan Studies, January 1991, Oxford University Press (OUP)

    Dr Helen Fiona Dallas

  29. Understanding the basics of water quality

    Article • Cambridge University Press

    Dr Helen Fiona Dallas