Search Results - "Harding, W.R."

Impacts of fish on phosphorus budget dynamics of some SA reservoirs : evaluating prospects of 'bottom up' phosphorus reduction in eutrophic systems through fish removal (biomanipulation) by Harding, W.R., Hart, R.C.

“…Data on fish standing stocks in 7 South African reservoirs were used to assess prospects of reducing in-lake amounts of total phosphorus (TP) through remedial…”
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Organochlorine pesticide levels in Clarias gariepinus from polluted freshwater impoundments in South Africa and associated human health risks by Barnhoorn, I.E.J., van Dyk, J.C., Genthe, B., Harding, W.R., Wagenaar, G.M., Bornman, M.S.

“…•Clarias gariepinus muscle tissue bio-accumulated organochlorine pesticides.•Predicted risk of developing cancer is higher than the recommended safe value of…”
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Diatoms as indicators of historical water quality: A comparison of samples taken in the Wemmershoek catchment (Western Province, South Africa) in 1960 and 2008 by Harding, W R, Taylor, J C

“…Historical diatom records provide a means of retrospectively determining water quality and inferring ecological condition in rivers and streams. In this study…”
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Food-web structure in the hypertrophic Rietvlei Dam based on stable isotope analysis : specific and general implications for reservoir biomanipulation by Hart, R.C.

“…Fish predation on zooplankton is the basic foundation for top-down biomanipulation of lacustrine ecosystems. To test this premise, we determined stable isotope…”
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The Use of Auxlliaries in Performing Medical Surgical Procedures and Sorting Patients in the O.P.D by Harding 3rd, J W.R.

“…NA…”
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Diatoms as indicators of historical water quality : a comparison of samples taken in the Wemmershoek catchment (Western Province, South Africa) in 1960 and 2008 : short communication by Harding, W.R., Taylor, J.C., Taylor, J.C.

“…Historical diatom records provide a means of retrospectively determining water quality and inferring ecological condition in rivers and streams. In this study…”
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The relevance of diatoms for water quality assessment in South Africa: A position paper by Harding, WR, Archibald, CGM, Taylor, JC

“…Water quality assessment protocols based on the use of diatoms are now well developed and their value substantiated at an international level. The use of…”
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Diatoms as indicators of water quality in the Jukskei-Crocodile River system in 1956 and 1957, a re-analysis of diatom count data generated by BJ Cholnoky by Taylor, J.C., Van Rensburg, L., Archibald, C.G.M., Harding, W.R.

“…South Africa has a long legacy of diatom research. The eminent diatomist Dr BJ Cholnoky spent much of his working life examining and enumerating diatom…”
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Death of a dog attributed to the cyanobacterial (blue-green algal) hepatotoxin nodularin in South Africa by Harding, W R, Rowe, N, Wessels, J C, Beattie, K A, Codd, G A

“…A bull terrier died after drinking water at the margin of Zeekoevlei near Cape Town. At the time, Zeekoevlei, a hypertrophic coastal lake, contained a bloom of…”
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Cyanobacterial (blue-green algae) poisoning of livestock in the western Cape Province of South Africa by Van Halderen, A, Harding, W R, Wessels, J C, Schneider, D J, Heine, E W, Van der Merwe, J, Fourie, J M

“…Three outbreaks of cyanobacterial (blue-green algae) poisoning involving cattle and sheep are described. In 2 of these acute mortality was followed by…”
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Gallium Arsenide for γ-Ray Spectroscopy by HARDING, W. R, HILSUM, C, MONCASTER, M. E, NORTHROP, D. C, SIMPSON, O

“…The semiconductor gallium arsenide with resistivity at room temperature exceeding 10/sup 6/ ohm-cm was found to be an efficient counter. When a bar of this…”
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Atmospheric HDO by Gebbie, H. A., Harding, W. R., Hilsum, C., Roberts, V.

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