FRESHWATER RESEARCH CENTRE 
      
       SPECIALISTS IN AQUATIC RESEARCH AND TRAINING

Journal publications (in chronological order)

Shelton JS, Weyl O, Van Der Walt J, Marr S, Impson D, Macijewski K, Tye D, Dallas H, Esler K.  2017.  Effect of an intensive mechanical removal effort on a population of non-native rainbow trout Oncorhynchus mykiss in a South African headwater stream.  Aquatic Conservation: Marine and Freshwater Ecosystems. In Press.

Kennedy MP, Lang P, Grimaldoc JP, Varandas Martin S, Bruce A, Moore I, Taubert R, Macleod-Nolan C, McWaters S, Briggs J, Lowe S, Saili K, Sichingabula H, Dallas H, Morrison S, Franceschini C, Willems F, Bottino F and Murphy KJ. 2017. Niche-breadth of freshwater macrophytes occurring in tropical southern African rivers predicts species global latitudinal range. Aquatic Botany 136: 21-30.

Rivers-Moore NA, Mantel S, Ramulifo P and Dallas HF. 2016. A disconnectivity index for improving choices in managing protected areas for rivers. Aquatic conservation: marine and freshwater ecosystems 26: 29-38. DOI: 10.1002/aqc.2661

Dallas HF. 2016. The influence of thermal history on upper thermal limits of two species of riverine insects: the stonefly, Aphanicerca capensis, and the mayfly, Lestagella penicillata. Hydrobiologia. DOI: 10.1007/s10750-016-2826-3.31.            

Dallas HF and Ross-Gillespie V. 2015. Sublethal effects of temperature on freshwater organisms, with special reference to aquatic insects. Water SA 41(5): 712-726.

Kennedy MP, Lang P, Grimaldoc JP, Varandas Martin S, Bruce A, Lowe S, H, Dallas, Sichingabula H, Briggs J. and Murphy KJ. The Zambian Macrophyte Trophic Ranking scheme, ZMTR: a new biomonitoring protocol to assess the trophic status of tropical southern African rivers. Submitted to Aquatic Botany.

Kaaya LT, Day JA & Dallas HF.  2015. Tanzania River Scoring System (TARISS): a macroinvertebrate-based biotic index for rapid bioassessment of rivers.  African Journal of Aquatic Science 40(2): 109-117.

Kennedy MP, Lang P, Grimaldoc JP, Varandas Martin S, Bruce A, Hastiec A, Lowe S, Alid MM, Sichingabula H, Dallas H, Briggs J. and Murphy KJ. 2015.  Environmental drivers of aquatic macrophyte communities in southern tropical African rivers: Zambia as a case study. Aquatic Botany 124: 19–28

Rivers-Moore NA, Palmer RW & Dallas HF. 2014. Assessing the relative culpability of Simulium (Diptera: Simuliidae) species in recent black fly outbreaks along the middle Orange River, South Africa. Canadian Journal of Zoology 92: 505–513.

Dallas HF, Rivers-Moore N. 2014. Ecological consequences of global climate change for freshwater ecosystems in South Africa. South African Journal of Science. 110 (5/6): 48-58.

Rivers-Moore NA, Dallas HF & Morris C.  2013.  Towards setting environmental water temperature guidelines: A South African example.  Journal of Environmental Management 128: 380-392

Watson M & Dallas HF.  2013.  Bioassessment in ephemeral rivers: constraints and challenges in applying macroinvertebrate sampling protocols.  African Journal of Aquatic Science 38(1): 35-51.

Dallas HF.  2013  Ecological status assessment in Mediterranean-rivers: complexities and challenges in developing tools for assessing condition and defining reference conditions.  Hydrobiologia. 719: 483-507.

Rivers-Moore NA, Dallas HF & Ross-Gillespie V. 2013  Life history does matter in assessing potential ecological impacts of thermal changes on aquatic macroinvertebrates.  Rivers Research and Application. 29: 1100-1109.

Rivers-Moore NA, Mantel S. & Dallas HF.   2012. Prediction of water temperature metrics using spatial modelling in the Eastern and Western Cape, South Africa.  Water SA 38: 167-176.

Dallas HF & Rivers-Moore NA 2011.  Micro-scale heterogeneity in water temperature.  Water SA 37(4): 505-512.

Dallas HF & Rivers-Moore N. 2012.  Critical Thermal Maxima of aquatic macroinvertebrates - towards identifying bioindicators of thermal alteration. Hydrobiologia 679: 61-76.

Dallas HF & Ketley ZA 2011.  Upper thermal limits of aquatic macroinvertebrates: comparing Critical Thermal Maxima with 96-LT50 values. Journal of Thermal Biology 36: 322-327.

Dallas HF.  2008.  Water temperature and riverine ecosystems: An overview of knowledge and approaches for assessing biotic responses, with special reference to South Africa. Water SA 34(3): 393-404.

Bonada N, Rieradevall M, Dallas H, Davis J, Day J, Figueroa R, Resh VH & Prat N. 2008.  Multi-scale assessment of macroinvertebrate richness and composition in Mediterranean-climate rivers.  Freshwater Biology 53: 772–788.

Dallas HF & Mosepele B.  2007.  A survey of the aquatic invertebrates of the Okavango Delta, Botswana.  African Journal of Aquatic Science 32(1): 1-11.

Dallas HF & Day JA.  2007.  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.  Hydrobiologia 575 (1): 231-244.

Dallas HF.  2007.  The effect of biotope-specific sampling for aquatic macroinvertebrates on reference site classification and the identification of environmental predictors in Mpumalanga, South Africa.  African Journal of Aquatic Science 32(2): 165–173.

Dallas HF.  2007.  The influence of biotope availability on macroinvertebrate assemblages in South African rivers: implications for aquatic bioassessment Freshwater Biology 52: 370-380.

Bonada N, Dallas HF, Rieradevall M, Prat N & Day JA. 2006.  A comparison of Rapid Bioassessment Protocols used to assess biological quality in two mediterranean regions, Spain and South Africa. Journal of the North American Benthological Society 25(2): 487-500.

Ollis DJ, Dallas HF, Esler KJ & Boucher C.   2006.  Rapid bioassessment of the ecological integrity of river ecosystems using aquatic macroinvertebrates: review with a focus on South Africa. African Journal of Aquatic Science 31 (2): 205-227.

Ollis DJ, Boucher C, Dallas HF & Esler KJ.   2006.  Preliminary testing of the Integrated Habitat Assessment System (IHAS) for aquatic macroinvertebrates. African Journal of Aquatic Science 31(1): 1-14

Dallas HF.  2004.  Spatial variability in macroinvertebrate assemblages: comparing regional and multivariate approaches for classifying reference sites in South Africa.   African Journal of Aquatic Science 29 (2): 161 – 171.

Dallas HF.  2004.  Seasonal variability of macroinvertebrate assemblages in two regions of South Africa: implications for aquatic bioassessment.  African Journal of Aquatic Science 29 (2): 173 – 184.

Dallas HF, Janssens MP & Day JA.  1999.  An aquatic macroinvertebrate and chemical database for riverine ecosystems.  Water SA 25 (1): 1-8.

Day JA, Dallas HF & Wackernagel A.  1998.  Delineation of management regions for South African rivers based on water chemistry.  Aquatic Ecosystem Health and Management 1: 183-197.

Dallas HF.  1997.  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. Southern African Journal of Aquatic Sciences 23 (1): 79-94.

Dallas HF & Curtis BA. 1991. Shell distribution of the terrestrial snail, Trigonephrus sp. (Mollusca: Dorcasiidae) in the southern Namib dunes. Cimbebasia 13:105–115.

Dallas HF, Curtis BA & Ward D.  1991.  Water exchange, temperature tolerance, oxygen consumption and activity of the Namib desert snail, Trigonephrus sp. Journal of Molluscan Studies 57(3): 359-366.

Chapters in books

Day JA & Dallas HF.  Chapter 4.  Understanding the basics of water quality.  In Water Resources, Planning and Management: Challenges and solutions. Cambridge University Press, UK.

Selected Research and Technical Reports

Dallas HF, Rivers-Moore NA, Ross-Gillespie V, Ramulifho P and Reizenberg J. 2015. Adaptability and vulnerability of Riverine Biota to Climate Change – Developing Tools for Assessing Biological Effects. Water Research Commission Report Number 2182/1/15. Water Research Commission, Pretoria, South Africa.

Rivers-Moore NA and Dallas HF. 2015 Towards assessing impacts of alien plant infestations on river systems in the Southern Cape using cost-benefit analyses. Water Research Commission Report 2264/1/15. Water Research Commission, Pretoria, South Africa.

Dallas HF and Rivers-Moore NA  2012.  Water temperatures and the ecological Reserve.  Water Research Commission Report No. KV 1799/1/12. Water Research Commission, Pretoria, South Africa.

Dallas HF, Molteno A & Janssens P.  2011. The Biological and Physico-chemical Database (version 2): User Manual Water Research Report No. KV 262/10, Water Research Commission, Pretoria, South Africa.

Dallas HF, Molteno A. and Janssens P. 2010. The Biological and Physico-chemical Database (version 2): User Manual. Water Research Commission Report No. KV 262/10. Water Research Commission, Pretoria, South Africa.32pp.

Dallas HF, Kennedy M., Taylor J., Lowe S. and Murphy K.  2010.  SAFRASS: Southern African River Assessment Scheme. WP4: Review of existing biomonitoring methodologies and appropriateness for adaptation to river quality assessment protocols for use in southern tropical Africa.  Prepared for ACP Contract AFS/2009/219013).

Dallas HF. 2009.  The effect of water temperature on aquatic organisms: a review of knowledge and methods for assessing biotic responses to temperature.  Water Research Commission Report KV 213/09. Water Research Commission, Pretoria, South Africa.

Dallas HF. 2009. Wetland monitoring using aquatic macroinvertebrates. Capacity Needs Assessment and Consultation Report. Report 2/2009, prepared for the Biokavango Project, Harry Oppenheimer Okavango Research Centre, University of Botswana. The Freshwater Consulting Group, University of Cape Town, Cape Town, South Africa.

Department of Water Affairs and Forestry (DWAF). 2008. National Aquatic Ecosystem Health Monitoring Programme (NAEHMP): River Health Programme (RHP) Implementation Manual. Version 2. ISBN No. 978-0-621-383343-0, Department of Water Affairs and Forestry, Pretoria, South Africa.

Dallas HF. 2009. Wetland monitoring using aquatic macroinvertebrates. Training Report. Report 3/2009, prepared for the Biokavango Project, Harry Oppenheimer Okavango Research Centre, University of Botswana. The Freshwater Consulting Group, University of Cape Town, Cape Town, South Africa.

Dallas HF. 2009. Wetland monitoring using aquatic macroinvertebrates. Technical Report. Report 5/2009, Prepared for the Biokavango Project, Harry Oppenheimer Okavango Research Centre, University of Botswana. The Freshwater Consulting Group, University of Cape Town, Cape Town, South Africa.

Dallas HF. 2009. Wetland monitoring using aquatic macroinvertebrates. Summary Report. Report 5/2009, prepared for the Biokavango Project, Harry Oppenheimer Okavango Research Centre, University of Botswana. The Freshwater Consulting Group, University of Cape Town, Cape Town, South Africa.

Dallas HF & Rivers-Moore NA. 2009. Adaptation to the consequences of Climate change for freshwater Resources.  Starter document produced for the Water Research Commission and the World Wide Fund for Wildlife. The Freshwater Consulting Group and Ezemvelo KZN Wildlife.

Dallas HF & Rivers-Moore NA. 2009. Future uncertain – Climate change and freshwater resources in South Africa. Technical Report produced for the Water Research Commission and the World Wide Fund for Wildlife. The Freshwater Consulting Group and Ezemvelo KZN Wildlife.

Dallas HF. 2008. Wetland monitoring using aquatic macroinvertebrates. Technical Report: An overview of existing macroinvertebrate data in the Okavango Delta. Report 1/2009, prepared for the Biokavango Project, Harry Oppenheimer Okavango Research Centre, University of Botswana. The Freshwater Consulting Group, University of Cape Town, Cape Town, South Africa.

Dallas HF, Molteno A, Ewart-Smith J and P. Janssens. 2007. Rivers Database Version 3: User Manual. Report for the Department of Water Affairs and Forestry River Health Programme.  Prepared by The Freshwater Consulting Group in association with Soft Craft Systems. 71pp.

PWBO/IUCN.  2007.  River Health Assessment for Pangani River Basin.  Unpublished technical report.  Pangani Basin Water Office, Moshi and IUCN Eastern Africa Programme. 155 pages.

Dallas HF.  2007.  River Health Programme: South African Scoring System (SASS) data interpretation guidelines. Prepared for the Institute of Natural Resources and the Resource Quality Services River Health, Department of Water Affairs and Forestry. The Freshwater Consulting Group, Cape Town, South Africa.

Dallas HF., Mosepele B., Mosepele K., Masamba W., Musindire H., Moleele N. 2007. Aquatic biodiversity and water quality of the Okavango Delta.  Report to the Water Research Foundation of Southern Africa. Freshwater Research Unit, Department of Zoology, University of Cape Town, South Africa and Harry Oppenheimer Okavango Research Centre, University of Botswana, Botswana.

Dallas HF.  2006.  Water Quality Module. Produced for the Fetwater RDM initiative.

Dallas HF.  2005.  River Health Programme: Site characterisation field-manual and field-data sheets. National Biomonitoring Programme Report Series No 18. Institute for Water Quality Studies, Department of Water Affairs and Forestry, Pretoria.

Dallas HF.  2005.  Inventory of national River Health Programme Monitoring sites, Volumes 1 and 2.  Prepared for Environmentek (CSIR) and Resource Quality Services River Health, Department of Water Affairs and Forestry.  The Freshwater Consulting Group, Cape Town, South Africa.

Dallas HF & Day JA.  2004.  The effect of water quality variables on aquatic ecosystems: a review.  Water Research Commission Technical Report No. 224/04, Water Research Commission, Pretoria, South Africa.

King J.M. & Dallas HF.  2003.  Case studies of environmental flow assessments and implementation: Lesotho Highlands Water Project; Senegal River; Lower Mekong River; Sabie River; Lower Indus River.  IUCN publication, Gland, Switzerland and Cambridge.

Dallas HF.  2002.  Spatial and temporal heterogeneity in lotic systems: implications for defining reference conditions for riverine macroinvertebrates.  Water Research Commission Report No. KV138/03 Pretoria, 218pp.

Dallas HF.  2000.  Ecological Reference Condition Project: field-Manual. Volume 1: general information, catchment condition, invertebrates and water chemistry.  National Biomonitoring Programme Report Series No 10. Institute for Water Quality Studies, Department of Water Affairs and Forestry, Pretoria.

Dallas HF.  2000.  The derivation of ecological reference conditions for riverine macroinvertebrates.  National Biomonitoring Programme for Riverine Ecosystems: Report Series No 12.  Institute for Water Quality Studies, Department of Water Affairs and Forestry, Pretoria, South Africa.

Dallas HF & Fowler J.  2000.  Delineation of river types for rivers of Mpumalanga, South Africa: establishing a spatial framework for selection of reference sites.  National Biomonitoring Programme Report Series No 9. Institute for Water Quality Studies, Department of Water Affairs and Forestry, Pretoria.

Dallas HF, Day JA, Musibono DE. & Day EG.  1998.  Water quality for aquatic ecosystems: tools for evaluating regional guidelines.  Water Research Commission Report No. 626/1/98.  Pretoria, 240pp.                                                                                                                                                                          

Dallas HF, Day JA & Reynolds ER.  1995.  The effects of water quality variables on riverine biotas.  Final Report to the Water Research Commission. Water Research Commission Report No 351/1/94. Pretoria, 230pp