Vol. 33 No. 1 (2007)

Published: 2009-12-08

Hydrological and hydraulic modelling of the Nyl River floodplain Part 1. Background and hydrological modelling

CFB Havenga, WV Pitman, AK Bailey

DOI:

10.4314/wsa.v33i1.47865

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Hydrological and hydraulic modelling of the Nyl River floodplain Part 2: Modelling hydraulic behaviour

AL Birkhead, CS James, MT Kleynhans

DOI:

10.4314/wsa.v33i1.47866

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Hydrologic and hydraulic modelling of the Nyl River floodplain Part 3: Applications to assess ecological impact

MT Kleynhans, CS James, AL Birkhead

DOI:

10.4314/wsa.v33i1.47867

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Determining a charge for the clearing of invasive alien plant species (IAPs) to augment water supply in South Africa

JN Blignaut, C Marais, JK Turpie

DOI:

10.4314/wsa.v33i1.47868

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A strategic study of the impact of invasive alien plants in the high rainfall catchments and riparian zones of South Africa on total surface water yield#

JDS Cullis, AHM Görgens, C Marais

DOI:

10.4314/wsa.v33i1.47869

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The language of intervention: A review of concepts and terminology in wetland ecosystem repair

MC Grenfell, WN Ellery, SE Garden, J Dini, AG van der Valk

DOI:

10.4314/wsa.v33i1.47870

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The application and testing of diatom-based indices in the Vaal and Wilge Rivers, South Africa

JC Taylor, MS Janse van Vuuren, AJH Pieterse

DOI:

10.4314/wsa.v33i1.47871

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Quantification of long-term precipitation use efficiencies of different maize production practices on a semi-arid ecotope in the Free State Province

TB Zere, CW van Huyssteen, M Hensley

DOI:

10.4314/wsa.v33i1.47872

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The full financial costs of irrigation services: A discussion on existing guidelines and implications for smallholder irrigation in South Africa

S Perret, M Geyser

DOI:

10.4314/wsa.v33i1.47873

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Groundwater resource-directed measures software

I Dennis, J Wentzel

DOI:

10.4314/wsa.v33i1.47874

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Use of natural isotopes and groundwater quality for improved recharge and flow estimates in dolomitic aquifers

DB Bredenkamp

DOI:

10.4314/wsa.v33i1.47875

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Interpretation of drinking water quality guidelines – The case of arsenic

PL Kempster, M Silberbauer, A Kühn

DOI:

10.4314/wsa.v33i1.47877

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Development of a water quality index based on a European classification scheme

H Boyacioglu

DOI:

10.4314/wsa.v33i1.47882

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Comparison of the direct enzyme assay method with the membrane filtration technique in the quantification and monitoring of microbial indicator organisms – seasonal variations in the activities of coliforms and E. coli, temperature and pH

VC Wutor, CA Togo, BI Pletschke

DOI:

10.4314/wsa.v33i1.48783

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Behaviour of humic-bentonite aggregates in diluted suspensions

DD Bilanovic, TJ Kroeger, SA Spigarelli

DOI:

10.4314/wsa.v33i1.48784

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Quantification of the effect of CO2 transfer on titrimetric techniques used for the study of biological wastewater treatment processes

S Pratt, Z Yuan

DOI:

10.4314/wsa.v33i1.48785

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Characterisation of microorganisms responsible for EBPR in a sequencing batch reactor by using the 16S rDNA-DGGE method

Y Ren, C Wei, K Xiao

DOI:

10.4314/wsa.v33i1.48786

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Removal of zinc ions from aqueous solution using micellar- enhanced ultrafiltration at low surfactant concentrations

Z Zhang, GM Zheng, JH Huan, YY Fang, K Xu, YH Qu, CP Yang, JB Li

DOI:

10.4314/wsa.v33i1.48787

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Optimum pHs for Cr(VI) co-removal with nucleated Cu(II) precipitation in continuous-flow fluidised metal strippers

JM Sun, R Li, JC Huang

DOI:

10.4314/wsa.v33i1.48788

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