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Browsing by Author "Woodborne, S"

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Age interpretation of the Wonderkrater spring sediments and vegetation change in the Savanna Biome, Limpopo province, South Africa

Author: Scott, L ; Holmgren, K ; Talma, AS ; Woodborne, S ; Vogel, JC Date: Sep 2003 Spring accumulations are valuable and rare sources for Quaternary pollen analysis and palaeoenvironmental research in South Africa. It is important to optimize their dating, which is sometimes complicated by root contamination. Thirteen new ... Read more
Beyond the drip-line: a high-resolution open-air Holocene hunter-gatherer sequence from highland Lesotho

Author: Mitchell, P ; Plug, I ; Bailey, G ; Charles, R ; Esterhuysen, A ; Thorp, JL ; Parker, A ; Woodborne, S Date: Mar 2011 The activities of hunter-gatherers are often captured in rockshelters, but here the authors present a study of a riverside settlement outside one, with a rich sequence from 1300 BC to AD 800. Thanks to frequent flooding, periods of occupation ... Read more
Comparison of various modelling approaches applied to cholera case data

Author: Van Den Bergh, F ; Holloway, Jennifer P ; Pienaar, M ; Koen, Renée ; Elphinstone, CD ; Woodborne, S Date: Jun 2008 The application of a methodology that proposes the use of spectral methods to inform the development of statistical forecasting models for cholera case data is explored in this paper. The seasonal behaviour of the target variable (cholera ... Read more
Dating of dipterocarp tree rings: establishing a record of carbon cycling and climatic change in the tropics

Author: Robertson, I ; Froyd, CA ; Walsh, RPD ; Newbery, DM ; Woodborne, S ; Ong, RC Date: Oct 2004 In a first step to obtain a proxy record of past climatic events (including the El Ni (n) over tildeo-Southern Oscillation) in the normally a seasonal tropical environment of Sabah, a radial segment from a recently fallen dipterocarp (Shorea ... Read more
Ecosystem change and the Olifants River crocodile mass mortality events

Author: Woodborne, S ; Huchzermeyer, D ; Govender, D ; Pienaar, D ; Hall, G ; Myburgh, J ; Deacon, A ; Venter, J ; Lubcke, N Date: Oct 2012 Nile crocodile (Crocodilus niloticus) mass mortality events in the Olifants River between the Letaba River confluence in South Africa and Lake Massingir in Mozambique have been attributed to pansteatitis: a disease that affects fat depots of ... Read more
Erfkroon: a new Florisian fossil locality from fluvial contexts in the western Free State, South Africa

Author: Churchill, SE ; Brink, JS ; Berger, LR ; Hutchison, RA ; Rossouw, L ; Stynder, D ; Hancox, PJ ; Brandt, D ; Woodborne, S ; Loock, JC ; Scott, L ; Ungar, P Date: Apr 2000 This article provides information on a research on Erfkroon, a Florisian fossil locality from fluvial contexts in the western Free State of South Africa. As well as details on the excavation of gravel bars at the locality; Complexity of the ... Read more
Estimation of food composition of Hodotermes mossambicus (Isoptera: Hodotermitidae) based on observations and stable carbon isotope ratios

Author: Symes, CT ; Woodborne, S Date: Apr 2011 The diet of the harvester termite Hodotermes mossambicus was investigated at two sites with distinct dietary components: C4 grasses (d13C isotope values, -13.8‰ to -14.0‰) and C3 plants (d13C isotope values, -25.6‰ to -27.1‰). By comparing ... Read more
How does climate change affect groundwater in South Africa?

Author: Maserumule, R ; Colvin, C ; Woodborne, S Date: Nov 2008 Groundwater is a relatively small component of South Africa's water resources accounting for approximately 15% percent of South Africa's water consumption (DWAF 2002). Unfortunately, this statistic is overshadowed by the fact that close to ... Read more
Late-Holocene marine radiocarbon reservoir correction (ΔR) for the west coast of South Africa

Author: Dewar, G ; Reimer, PJ ; Sealy, J ; Woodborne, S Date: Jun 2012 In order to calibrate radiocarbon ages based on samples with a marine carbon component it is important to know the marine carbon reservoir correction or ΔR value. This study measured the ΔR on both known-age pre-bomb marine shells and paired ... Read more
Lessons for South African science: perspectives on QUADRU

Author: Woodborne, S Date: Apr 1999 This paper discusses an overview of research which was conducted for more than 25 years on dating and isotopes by the Quaternary Dating Research Unit (QUADRU) under the supervision of Dr John. Vogel in Pretoria (South Africa). Read more
Looking beyond impact assessment to social sustainability

Author: Aucamp, I ; Woodborne, S ; Perold, J ; Bron, A ; Aucamp, S-M Date: Dec 2011 At the 1992 United Nations Conference on Environment and Development (or Earth Summit) in Rio de Janeiro, and a decade later at the 2002 World Summit on Sustainable Development (Earth Summit +10) in Johannesburg, the world embraced the concept ... Read more
Luminescence dating at Rose cottage cave: a progress report

Author: Woodborne, S ; Vogel, JC Date: Oct 1997 Deal with infrared-stimulated luminescence and thermoluminescence dates from Rose Cottage Cave in South Africa. Discrepancy between luminescence and radiocarbon dates; Concentration of radioactive elements in sediments before and after leaching ... Read more
Mitigating the future impact of Cholera Epidemics

Author: Woodborne, S ; Pienaar, M ; Van der Merwe, Martina R Date: Nov 2008 Cholera epidemics have been analysed using epidemiological models that depend on human-to environment- to-human spread of toxigenic Vibrio cholerae bacteria (Koelle et al. 2004, Koelle et al. 2005). Within such a framework the vulnerable human ... Read more
Optically stimulated luminescence dating at Rose Cottage Cave

Author: Pienaar, M ; Woodborne, S ; Wadley, L Date: Jan 2008 Six Optically stimulated luminescence (OSL) dates are compared with stratigraphically associated C-14 dates from Rose Cottage Cave. The OSL dates overlap the accepted C-14 chronology except for one sample that overestimates the expected age ... Read more
Potential of the baobab (Adansonia digitata L.) as a proxy climate archive

Author: Robertson, I ; Loader, NJ ; Froyd, CA ; Zambatis, N ; Whyte, I ; Woodborne, S Date: Oct 2006 The large girth and immense size of the baobab has caused many to speculate about its age. Unfortunately reliable age estimates cannot be determined from growth rates as the girth varies in response to different moisture regimes. In a similar ... Read more
Subterranean sympatry: An investigation into diet using stable isotope analysis

Author: Robb, GN ; Woodborne, S ; Bennett, NC Date: Nov 2012 In the Western Cape three species of mole-rat occur in sympatry, however, little is known about differences in their dietary preferences. Dietary composition of the three species; the common mole-rat (Cryptomys hottentotus hottentotus), the ... Read more
Trophic ecology and persistence of invasive silver carp Hypophthalmichthys molitrix in an oligotrophic South African impoundment

Author: Lübcker, N ; Dabrowski, J ; Zengeya, TA ; Oberholster, Paul J ; Hall, G ; Woodborne, S ; Robertson, MP Date: Dec 2016 The alien invasive silver carp Hypophthalmichthys molitrix established a self-sustaining feral population in an oligotrophic impoundment, Flag Boshielo Dam, in South Africa. The ability of this population to persist in a dam with low algal ... Read more
Vegetation history inferred from pollen in Late Quaternary faecal deposits (hyraceum) in the Cape winter-rain region, and its bearing on past climates in South Africa

Author: Scott, L ; Woodborne, S Date: 2007 Pollen analysis shed light on vegetation community structure over the last 23,000 year in the Western Cape. The pollen from dated hyrax faecal accumulations (hyraceum) relates to the evolution of climate and contributes to proxy records in ... Read more

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