Search Results - "van Vuuren, S Janse"

Role of the Lethabo Weir in altering the phytoplankton community structure of the Vaal River, South Africa by Janse van Vuuren, S, Swanepoel, A

“…During 2012, aerial photographs of the Vaal River, South Africa, showed differences in water colour on either side of the Lethabo Weir. Water upstream of the…”
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Rediscovery of Actinodontum lomaense: a range extension from Sierra Leone to southern Africa by Janse van Vuuren, S., Levanets, A.

“…The history of Actinodontum lomaense has been marked by taxonomic revisions since its initial discovery in samples from Sierra Leone during 1984. The…”
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Mass developments of Euglena sanguinea Ehrenberg in South Africa by Janse van Vuuren, S, Levanets, A

“…Blooms of Euglena sanguinea Ehrenberg were observed at two different locations in South Africa, Mpumalanga province during 2016 and Limpopo province during…”
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First record of Chlamydomonas proboscigera in the southern hemisphere by Laubscher, M, van Vuuren, S Janse, Levanets, A, Barnard, S

“…Chlamydomonas proboscigera is a unicellular, ellipsoidal-to-spherical chlorophyte distinguished by a flattened papilla, a large spherical pyrenoid and a…”
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Can the presence of curved forms of the diatom Aulacoseira ambigua in the Nile (Egypt) and Vaal (South Africa) Rivers be ascribed to similar water quality conditions? by Janse van Vuuren, S, Saber, AA, Swanepoel, A, Cantonati, M

“…Spiral colonies of the diatom Aulacoseira ambigua were assigned the rank of forma (Aulacoseira ambigua f. japonica). This spiral-shaped, colonial, centric…”
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Changes in the algal composition and water quality of the Sundays River, Karoo, South Africa, from source to estuary by Janse van Vuuren, S, Taylor, JC

“…A first survey was done on algae present in the Sundays River from its source to its confluence with the sea. Species found in the upstream sections of the…”
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Planktonic algae and cyanoprokaryotes as indicators of ecosystem quality in the Mooi River system in the North-West Province, South Africa by VENTER, A, BARNARD, S, DICKINSON, M. A, VAN VUUREN, S. Janse, LEVANETS, A, TAYLOR, J. C

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Changes in density and composition of algal assemblages in certain unit processes of two South African water purification plants by Oosthuizen, MGJ, Janse van Vuuren, S

“…The water purification plants at Virginia and Bothaville, South Africa, experience problems with cyanobacteria and other algae. Their algal assemblages were…”
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First record of a spiral form of Aulacoseira, A. ambigua f. japonica (F.Meister) Tuji & D.M.Williams, in South African fresh waters by Janse van Vuuren, S, Taylor, JC

“…Water quality and algal populations in the Vaal River Barrage Reservoir have been monitored extensively for many decades, because of its importance as a water…”
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The application and testing of diatom-based indices in the Vaal and Wilge Rivers, South Africa by Taylor, J.C., Janse van Vuuren, M.S., Pieterse, A.J.H.

“…Chemical monitoring of water resources is time-consuming and comparatively expensive and may not always provide a composite reflection of actual water quality…”
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Hundred years of Botany at the NWU: contributions towards understanding plant and algae function, diversity and restoration in a changing environment by Cilliers, S.S., Janse van Vuuren, S., Kellner, K., Krüger, G.H.J., Struwig, M., Van Niekerk, C.J.G, Siebert, S.J.

“…The Department of Botany on the Potchefstroom Campus (formerly Potchefstroom University for Christian Higher Education) of the North-West University (NWU) had…”
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The application and testing of diatom-based indices in the Vaal and Wilge Rivers, South Africa by Taylor, JC, Janse van Vuuren, MS, Pieterse, AJH

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Freshwater algae (excluding diatoms) of the Sub-Antarctic Marion Island by Van Staden, W., Van Vuuren, S. Janse, Smith, V., Van Rensburg, L.

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