2022

2021

SCIENTIFIC PAPERS:

Dallas HF, Shelton JM, Sutton T, Tri Cuptura D, Kajee M and Job N. 2021. The Freshwater Biodiversity Information System (FBIS) – mobilising data for evaluating long-term change in South African rivers. African Journal of Aquatic Science DOI: 10.2989/16085914.2021.1982672.

Dallas HF. 2021.  Rapid bioassessment protocols using aquatic macroinvertebrates in Africa - considerations for regional adaptation of existing biotic indices. Frontiers in Water. DOI: 10.3389/frwa.2021.628227.

Lehner B, Katiyo L, Chivava F, Sichingabula HM, Nyirenda E, Rivers-Moore NA, Paxton BR, Grill G, Nyoni F, Shamboko-Mbale B, Banda K, Thieme ML, Silembo OM, Musutu A and Filgueiras R. 2021. Identifying priority areas for surface water protection in data scarce regions: An integrated spatial analysis for Zambia. Aquatic Conservation: Marine and Freshwater Ecosystems.

Olsen T, Shelton JM and Dallas HF. 2021. Does thermal history influence thermal tolerance of the freshwater fish Galaxias zebratus in a global biodiversity hotspot? Journal of Thermal Biology. DOI.org/10.1016/j.jtherbio.2021.102890.

Ramulifho PA, Foord SH and Rivers-Moore NA. 2021. Structure and diversity of blackfly assemblages in the Luvuvhu River system, South Africa in response to changing environmental gradients. Hydrobiologia DOI: 10.1007/s10750-021-04741-4.

Rivers-Moore NA and de Moor FC. 2021. Climate-linked freshwater habitat change will have cost implications: Pest blackfly outbreaks in two linked South African rivers. River Research and Applications 37: 387-398.

Rivers-Moore NA, Paxton BR, Chivava F, Katiyo L, Phiri H, Katongo C, Thieme ML, Lehner B and Linke S. 2021. Aquatic areas of ecological importance as inputs into surface water resource protection areas in Zambia. Aquatic Conservation: Marine and Freshwater Ecosystems.

CHAPTERS IN BOOKS:

Dallas HF, Rivers-Moore NA and Kajee M. 2021. Climate Change: Abiotic drivers, impact on water resources and ecosystems, mitigation, and management options. Chapter 12. In (Eds. Day JA, Day BA and Reizenberg J) WRC@50. Water Research Commission, Pretoria. South Africa.

Machingura J, Coetzee J, Dallas H, Day B, Day J, Hay D, Skelton P, Thirion C and Uys M. 2021. The evolution of ecosystem research – from biodiversity to biossessments. Chapter 07. In (Eds. Day JA, Day BA and Reizenberg J) WRC@50. Water Research Commission, Pretoria. South Africa.

Snaddon K, Kotze D, Pretorius L and Fortune F. 2021. The Water Research Commission Wades into Wetland Research. Chapter 9. In (Eds. Day JA, Day BA and Reizenberg J) WRC@50. Water Research Commission, Pretoria. South Africa.

POPULAR ARTICLES:

Giant Redfin: Conserving South Africa's Native Fish (The Nature Conservancy’s Cool Green Science Blog, 21 March 2022)

South Africa’s freshwater fish face extinction (Mail and Guardian 2021)

Conserving one of the world’s most threatened migratory fish (The Fisheries Blog 2021)

Helen Dallas – A career dedicated to the conservation of southern Africa’s freshwater systems. (Water Wheel Page 24)

South Africa’s freshwater fish face extinction (Mail & Guardian 2021)

FILMS:

Paralenz 2021

Waterdak 2021

2020

SCIENTIFIC PAPERS:

Dallas HF and Mosepele B. 2020. Spatial variability of aquatic macroinvertebrate assemblages in the Okavango Delta, Botswana: considerations for developing a rapid bioassessment tool. African Journal of Aquatic Science 45(3): 350-363.

Ramulifho PA, Foord SH and Rivers-Moore NA. 2020. The role of hydro-environmental factors in Mayfly (Ephemperoptera, Insecta) community structure: Identifying threshold responses. Ecology and Evolution DOI: 10.1002/ece3.6333.

Rivers-Moore NA, Kotze DC, Job N and Mohanlal S. 2020. Prediction of wetland hydrogeomophic type using morphometrics and landscape characteristics. Frontiers in Environmental Science 8:58. DOI: 10.3389/fenvs.2020.00058.

Rivers-Moore NA and de Moor FC. 2020. Longitudinal species turnover rates are predictable and should guide location of sampling sites for South African river surveys to assess aquatic biodiversity. African Journal of Aquatic Science.

Rivers-Moore NA, Schulze RE and Davis NS 2020. A regional flow type classification for South African perennial rivers. Water SA 46(3):383-392.

REPORTS:

Macfarlane DM, Ollis DJ and Kotze DC. 2020. A refined suite of tools for assessing the present ecological state of wetland ecosystems. Technical Report No TT 820/20. Water Research Commission, Pretoria, South Africa.

van Deventer H, Naidoo L, Cho MA, Job NM, Linström A, Sieben E, Snaddon K. and Gangat R. 2020.  Establishing Remote Sensing Toolkits for Monitoring Freshwater Ecosystems under Global Change.  Report to the Water Research Commission, WRC Report No. 2545/1/19, ISBN 978-0-6392-0125-2.

POPULAR ARTICLES:

Scientists jump in as alien invaders threaten to leave sandfish up creek (Times live 2020)

Searching for sandfish (The Mission 2020)

Researchers develop environmental water temperature guidelines for SA rivers

FILMS:

Saving Sandfish 2020

Water Mountain 2020

The Orange 2020

Krom River 2020

2019

SCIENTIFIC PAPERS:

Snaddon K, Robinson J, Foden W, Van Deventer H, Van Rooyen L, Genthe B and Sieben E. 2019. Chapter 3: Climate change – our changing environment from a freshwater ecosystems perspective, in Van Deventer et al. South African National Biodiversity Assessment 2018: Technical Report. Volume 2b: Inland Aquatic (Freshwater) Realm. CSIR report number CSIR/NRE/ECOS/IR/2019/0004/A. South African National Biodiversity Institute, Pretoria.

Reizenberg JL, Bloy LE, Weyl OLF, Shelton JM and Dallas HF. 2019. Variation in thermal tolerances of native freshwater fishes in South Africa’s Cape Fold Ecoregion: examining the east–west gradient in species’ sensitivity to climate warming. Journal of Fish Biology 94(1): 103-112.

Rivers-Moore NA, Ellender BR and Weyl OLF. 2019. Modelling expected trout ranges under current and future water temperature regimes in the Eastern Cape, South Africa.  African Journal of Aquatic Science 44: 35-42.

REPORTS:

Dallas HF and Rivers-Moore NA. 2019. Environmental water temperature guidelines for perennial rivers in South Africa. Technical Report No TT 799/1/19. Water Research Commission, Pretoria, South Africa.

Dallas HF and Rivers-Moore NA. 2019. Environmental water temperature guidelines for perennial rivers in South Africa - A technical manual for setting water temperature targets. WRC Report No TT 799/2/19. Water Research Commission, Pretoria, South Africa.

Dallas HF, Shelton JM, Paxton BR, Weyl O, Reizenberg R, Bloy L and Rivers-Moore NA. 2019. Assessing the effect of climate change on native and non-native freshwater fishes in the Cape Floristic Region, South Africa. WRC Report No TT 801/19. Water Research Commission, Pretoria, South Africa.

Rafferty M, Paxton BR, Bragg CA, Shelton JM, Snaddon K and Frenzel P. 2019. Baseline Assessment for Freshwater Biodiversity Conservation in the Riviersonderend catchment. Report 3: South Africa: Stakeholder Engagement and Analysis. Prepared for The Nature Conservancy by the Freshwater Research Centre. Pp 28.

Shelton JM, Snaddon K, Paxton BR, Rafferty M and Frenzel P. 2019. A Baseline Assessment for Freshwater Biodiversity Conservation in the Riviersonderend Catchment, South Africa. Report 4: Threats and Interventions. Prepared for The Nature Conservancy by the Freshwater Research Centre. Pp 37.

Snaddon K, Shelton JM, Frenzel P and Paxton BR. 2019. A Baseline Assessment for Freshwater Biodiversity Conservation in the Riviersonderend Catchment, South Africa. Report 1. River Health. Prepared for The Nature Conservancy by the Freshwater Research Centre. Pp 67.

Ewart-Smith J, Ross-Gillespie V, Grainger C. 2019. Towards the use of periphyton as indicators of flow and nutrient alterations for the management of water resources in South Africa. WRC Report TT 784/18. Water Research Commission, Pretoria, South Africa.

POPULAR ARTICLES:

Cape’s endemic fish swimming for survival (Water Wheel 2019)

FILMS:

Warming Waters 2019

2018

SCIENTIFIC PAPERS:

Dallas HF and Rivers-Moore NA. 2018. Temporal thermal refugia and seasonal variation in upper thermal limits of two species of riverine invertebrates: the amphipod, Paramelita nigroculus, and the mayfly, Lestagella penicillata. Aquatic Ecology 52(4): 333-349.

Dallas HF, Lowe S, Kennedy MP, Saili K and Murphy KJ. 2018.  Zambian Invertebrate Scoring System (ZISS): A macroinvertebrate-based biotic index for rapid bioassessment of southern tropical African river systems. African Journal of Aquatic Science 43(4): 325-344.

Ramulifho PA, Rivers-Moore NA, Dallas HF and Foord SH. 2018. A conceptual framework towards more holistic freshwater conservation planning through incorporation of stream connectivity and thermal vulnerability. Journal of Hydrology 556: 173-181.

Rivers-Moore NA, Dallas HF, de Moor FC and Barendse J. 2018. Relationships of water temperature and aquatic macroinvertebrate community structure with non-native riparian plant densities in the southern Cape, South Africa. African Journal of Aquatic Science 43(3): 215-227.

Rivers-Moore NA and Hill TR. 2018. A predictive management tool for blackfly outbreaks on the Orange River, South Africa. River Research and Applications 34(9): 1197-1207.

Rivers-Moore NA and Palmer RW. 2018. The influence of turbidity and water temperature on black fly species in the middle and lower Orange River, South Africa. Canadian Journal of Zoology 96(6): 614-621.

Ross-Gillespie V, Picker MD, Dallas HF and Day JA. 2018. The role of temperature in egg development of three aquatic insects Lestagella penicillata (Ephemeroptera), Aphanicercella scutata (Plecoptera), Chimarra ambulans (Trichoptera) from South Africa. Journal of Thermal Biology 71: 158-170.

Shelton JM, Weyl OLF, Esler KJ, Paxton BR, Impson DN and Dallas HF. 2018. Temperature mediates the impact of non-native rainbow trout on native freshwater fishes in South Africa's Cape Fold Ecoregion. Biological Invasions 20(10): 2927–2944.

Shelton JM, Bird MS and Marr SM. 2018. Evidence for diet partitioning among three coexisting native freshwater fishes in South Africa's Cape Fold Ecoregion. African Journal of Aquatic Science 43(2): 89-100.

REPORTS:

Odume ON, Ntloko P, Akamagwuna FC, Dallas HF, Barber-James H. 2018. Development of macroinvertebrate trait-based approach for assessing and managing ecosystem health in South African rivers – Incorporating a case study in the Tsitsa river and its tributaries, Eastern Cape. Water Research Commission Project K5/7157. Water Research Commission, Pretoria, South Africa.


POPULAR ARTICLES:

Why our rivers matter

Below the Surface of South Africa's Worst Drought On Record

The Maloti minnow, a fish out of water

River and Redfin

Fish have prepared for Cape drought for millions of years

2017

SCIENTIFIC PAPERS:

Kennedy MP, Lang P, Grimaldo JT, Martins SV, Alannah B, Moore I, Taubert R, Macleod-Nolan C, McWaters S, Briggs JA, Lowe S, Saili K, Sichingabula H, Dallas HF, 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.

Reizenberg JL. 2017. The thermal tolerances and preferences of native fishes in the Cape Floristic Region: towards understanding the effect of climate change on native fish species (Masters dissertation, University of Cape Town).

Shelton JM, Weyl OLF, Chakona A, Ellender BR, Esler KJ, Impson DN, Jordaan MS, Marr SM, Ngobela T, Paxton BR, Van der Walt JA and Dallas HF. 2017. Vulnerability of Cape Floristic Region freshwater fishes to climate change and other human impacts. Aquatic Conservation 28(1): 68-77.

Shelton JM, Impson DN, Graham S and Esler KJ. 2017. Down, but not out: rapid recent decline of Berg-Breede River whitefish (Barbus andrewi) in the upper Hex River, South Africa. Koedoe. 59(1): 1398.

Shelton JM, Weyl OLF, Van Der Walt J, Marr S, Impson DN, Macijewski K, Tye D, Dallas HF and 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 27(5): 1051-1055.

REPORTS:

Bragg CJ, Paxton BR, Shelton JM, Bovim LA and Dallas HF. 2017. Freshwater Fishes of the Cape Fold Ecoregion and Climate Change: Volume 2: Policy Uptake Strategy. Prepared on behalf of the Table Mountain Fund by the Freshwater Research Centre pp 14.

Dallas HF, Shelton JM, Paxton BR and Weyl OLF. 2017. Freshwater Fishes of the Cape Fold Ecoregion and Climate Change: Volume 1: Research Synthesis. Prepared on behalf of the Table Mountain Fund by the Freshwater Research Centre pp 12.

Ewart-Smith J, Graham M, Pillay P and Singh S. 2017. The application and development of periphyton as indicators of flow and nutrient alterations and the establishment of trophic status thresholds for water quality monitoring and management of rivers in South Africa. WRC Report K5/2351. Water Research Commission, Pretoria, South Africa.

Grainger CV. 2017. Patterns in periphyton biomass and community structure in foothill rivers: A comparison between winter and summer rainfall regions. (Masters dissertation, Stellenbosch University).

POPULAR ARTICLES:

What climate change means for our freshwater fish

Emerging Freshwater Biologists Learn To Monitor River Rehabilitation

FILMS:

Living Labs 2017

2016

SCIENTIFIC PAPERS:

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 781(1): 95-108.

Kennedy MP, Lang P, Grimaldoc JP, Varandas Martin S, Bruce A, Lowe S, Dallas HF, Sichingabula H, Davidson TA, Briggs JA and Murphy KJ. 2016. The Zambian Macrophyte Trophic Ranking scheme, ZMTR: a new biomonitoring protocol to assess the trophic status of tropical southern African rivers. Aquatic Botany 131: 15-27.

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.

Shelton JM, Bird MS, Samways MJ and Day JA. 2016. Non-native rainbow trout, Oncorhynchus mykiss, occupy a different trophic niche to native Breede River redfin, Pseudobarbus burchelli, which they replace in South African headwater streams. Ecology of Freshwater Fish 26(3): 484-496.

Shelton JM, Clark BM, Sephaka T and Turpie JK. 2016. Population crash in Lesotho's endemic Maloti minnow, Pseudobarbus quathlambae, following invasion by translocated smallmouth yellowfish, Labeobarbus aeneus. Aquatic Conservation 27(1): 65-77.

Shelton JM, Woodford DJ, Samways MJ and Day JA. 2016. Are native cyprinids or introduced salmonids stronger regulators of benthic invertebrates in South African headwater streams? Austral Ecology 41(6): 633-643.

REPORTS:

Paxton BR, Dobinson L, Kleynhans M, Reinecke K and Dallas HF. 2016. FEPAs and Flows - Developing methods for Ecological Reserve Compliance Monitoring in Freshwater Ecosystem Priority Areas (FEPAs) - a case study in the Kouebokkeveld, Western Cape. Water Research Commission Report Number 2340/1/16. Water Research Commission, Pretoria, South Africa.

2015

SCIENTIFIC PAPERS:

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.

Kaaya LT, Day JA and 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 JT, Varandas Martins SV, Bruce A, Hastie A, Lowe S, Ali MM, Sichingabula H, Dallas HF, Briggs JA 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.

Shelton JM, Samways MJ and Day JA. 2015. Non-native rainbow trout change the structure of benthic communities in streams of the Cape Floristic Region, South Africa. Hydrobiologia 26(3): 484-496.

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.

Malan HL, Day JA, Ramjukadh CL and Olivier N. 2015. Trajectories of change in wetlands of the Fynbos Biome from the late 1980s to 2014. Status Reports for the individual wetlands sampled during the project. Water Research Commission Report Number 2183/1/14. 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 Number 2264/1/15. Water Research Commission, Pretoria, South Africa.

POPULAR ARTICLES:

Trout in the fynbos

FILMS:

Fins in the Fynbos 2015

Redfin 2015

2014

SCIENTIFIC PAPERS:

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

Eady BR, Hill T and Rivers-Moore NA. 2014. Shifts in aquatic macroinvertebrate community structure in response to perenniality, southern Cape, South Africa. Journal of Freshwater Ecology. 29(4): 475-490.

Ramjukadh CL. 2014. Are wetland plant communities in the Cape Flora influenced by environmental and land-use changes? MSc thesis. Biological Sciences, University of Cape Town, South Africa.

Rivers-Moore NA, Palmer RW and 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.

Shelton JM, Samways MJ and Day JA. 2014. Non-native rainbow trout change the structure of benthic communities in streams of the Cape Floristic Region, South Africa. Hydrobiologia 745(1): 1-15.

Shelton JM, Samways MJ and Day JA. 2014. Predatory impact of non-native rainbow trout on endemic fish populations in headwater streams in the Cape Floristic Region of South Africa. Biological Invasions 17(1): 365-379.

Shelton JM, Impson DN and Day JA. 2014. Preliminary evaluation of the impact of invasive smallmouth bass on native fish abundance in the Witte River, Cape Floristic Region, South Africa. African Zoology 49(2): 277-282.

REPORTS:

Clark B, Shelton JM and Sephaka T. 2014. Biological Resources Monitoring within Phase 1 of the Lesotho Highlands Water Project Catchments 2013-14. Report 5a: Fish Katse Catchment Specialist Report 57pp.

Clark B, Shelton JM and Sephaka T. 2014. Biological Resources Monitoring within Phase 1 of the Lesotho Highlands Water Project Catchments 2013-14. Report 5b: Fish Mohale Catchment Specialist Report 52pp.

POPULAR ARTICLES:

Redfins a Conservation Story

2013

SCIENTIFIC PAPERS:

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.

Eady BR, Rivers-Moore NA and Hill TR. 2013. Relationship between water temperature predictability and aquatic macroinvertebrate assemblages in two South African streams. African Journal of Aquatic Science 38(2): 163-174.

Lowe S, Dallas HF, Kennedy MP, Taylor JC, Gibbins C, Lang P, Sichingabula H, Saili K, Ntobolo C, Kabangu K, Day JA, Willems F, Briggs JA and Murphy KJ. 2013. The SAFRASS biomonitoring scheme, general aspects, macrophytes (ZMTR) and benthic macroinvertebrates (ZISS) protocols. SAFRASS. Deliverable Report to the ACP Group Science and Technology Programme, Contract No. AFS/2009/219013. University of Glasgow, Glasgow, Scotland. 19 pp.

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

Rivers-Moore NA, Dallas HF and Ross-Gillespie V. 2013.  Life history does matter in assessing potential ecological impacts of thermal changes on aquatic macroinvertebrates.  River Research and Application 29(9): 1100-1109.

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

REPORTS:

Lowe S, Dallas HF, Kennedy MP, Taylor JC, Gibbins C, Lang P, Sichingabula H, Saili K, Ntobolo C, Kabangu K, Day JA, Willems F, Briggs JA and Murphy KJ. 2013. The SAFRASS biomonitoring scheme, general aspects, macrophytes (ZMTR) and benthic macroinvertebrates (ZISS) protocols. SAFRASS. Deliverable Report to the ACP Group Science and Technology Programme, Contract No. AFS/2009/219013. University of Glasgow, Glasgow, Scotland. 16 pp.

2012


RELATED PAPERS PRIOR TO 2012

SCIENTIFIC PAPERS:

Dallas HF and Ketley ZA. 2011. Upper thermal limits of aquatic macroinvertebrates: comparing Critical Thermal Maxima with 96-LT50 values. Journal of Thermal Biology 36(6): 322-327.

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

Day JA and Dallas HF. 2011. Understanding the basics of water quality.  In Water Resources, Planning and Management: Challenges and solutions. Cambridge University Press, UK. Chapter 4.

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.

Shelton JM, Day JA and Griffiths CL. 2008. Influence of largemouth bass, Micropterus salmoides, on abundance and habitat selection of Cape galaxias, Galaxias zebratus, in a mountain stream in the Cape Floristic Region, South Africa. African Journal of Aquatic Science 33(3): 201-210.

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

REPORTS:

Dallas HF, Kennedy MP, Taylor JC, Lowe S and Murphy KJ. 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.

POPULAR ARTICLES:

Turning up the heat – research project investigates water temperature effects on freshwater systems.