Vol. 38 No. 2 (2012)

Published: 2012-05-16

Regional-scale risk assessment methodology using the Relative Risk Model (RRM) for surface freshwater aquatic ecosystems in South Africa

GC O’Brien, V Wepener

153-166

DOI:

10.4314/wsa.v38i2.1

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

NA Rivers-Moore, S Mantel, HF Dallas

167-176

DOI:

10.4314/wsa.v38i2.2

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The response of microalgal biomass and community composition to environmental factors in the Sundays Estuary

D Kotsedi, JB Adams, GC Snow

177-190

DOI:

10.4314/wsa.v38i2.3

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Synthetic monthly flow duration curves for the Cape Floristic Region, South Africa

A Hope, R Bart

191-200

DOI:

10.4314/wsa.v38i2.4

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The water balance of a seasonal stream in the semi-arid Western Cape (South Africa)

RDH Bugan, NZ Jovanovic, WP De Clercq

201-212

DOI:

10.4314/wsa.v38i2.5

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Identification of sources and infiltration regimes of nitrate in the semi-arid Kalahari: Regional differences and implications for groundwater management

S Stadler, AS Talma, G Tredoux, J Wrabel

213-224

DOI:

10.4314/wsa.v38i2.6

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Quantifying rainfall-runoff relationships on the Mieso Hypo Calcic Vertisol ecotope in Ethiopia

WA Welderufael, PAL Le Roux, M Hensley

225-232

DOI:

10.4314/wsa.v38i2.7

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Infiltration and runoff losses under fallowing and conservation agriculture practices on contrasting soils, Zimbabwe

G Nyamadzawo, P Nyamugafata, M Wuta, J Nyamangara, R Chikowo

233-240

DOI:

10.4314/wsa.v38i2.8

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Monetary valuation of salinity impacts and microbial pollution in the Olifants Water Management Area, South Africa

WJ de Lange, BK Mahumani, M Steyn, SHH Oelofse

241-248

DOI:

10.4314/wsa.v38i2.9

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The perceptions of research values and priorities in water resource management from the 3rd Orange River Basin Symposium

FT Buschke, S Esterhuyse

249-254

DOI:

10.4314/wsa.v38i2.10

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An ion-imprinted polymer for the selective extraction of mercury(II) ions in aqueous media

BS Batlokwa, L Chimuka, Z Tshentu, E Cukrowska, N Torto

255-260

DOI:

10.4314/wsa.v38i2.11

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Optimal synthesis of a Ni(II)-dimethylglyoxime ion-imprinted polymer for the enrichment of Ni(II) ions in water, soil and mine tailing samples

M Rammika, G Darko, N Torto

261-268

DOI:

10.4314/wsa.v38i2.12

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The influence of pH on the adsorption of lead by Na-clinoptilolite: Kinetic and equilibrium studies

LM Cozmuta, AM Cozmuta, A Peter, C Nicula, EB Nsimba, H Tutu

269-278

DOI:

10.4314/wsa.v38i2.13

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Fluoride removal performance of phosphoric acid treated lime: Breakthrough analysis and point-of-use system performance

C Murutu, MS Onyango, A Ochieng, FAO Otieno

279-286

DOI:

10.4314/wsa.v38i2.14

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Sensitivity study of reduced models of the activated sludge process, for the purposes of parameter estimation and process optimisation: Benchmark process with ASM1 and UCT reduced biological models

S du Plessis, R Tzoneva

287-306

DOI:

10.4314/wsa.v38i2.15

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Effects of tailwater depth on spillway aeration

E Aras, M Berkun

307-312

DOI:

10.4314/wsa.v38i2.16

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Catchment management agencies as crucibles in which to develop responsible leaders in South Africa

MC Dent

313-326

DOI:

10.4314/wsa.v38i2.17

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The use of water resources for inland fisheries in South Africa

JR McCafferty, BR Ellender, OLF Weyl, PJ Britz

327-344

DOI:

10.4314/wsa.v38i2.18

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Impacts of invasive alien plants on water quality, with particular emphasis on South Africa

J Chamier, K Schachtschneider, DC le Maitre, PJ Ashton, BW van Wilgen

345-356

DOI:

10.4314/wsa.v38i2.19

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