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Browsing Natural and Agricultural Sciences by UP Author "Hall, Grant"
Now showing items 1-20 of 26
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Woodborne, Stephan M.; Hall, Grant; Robertson, Iian; Patrut, Adrian; Rouault, Mathieu; Loader, Neil R.; Hofmeyr, Michele (Public Library of Science, 2015-05-13)A proxy rainfall record for northeastern South Africa based on carbon isotope analysis of four baobab (Adansonia digitata L.) trees shows centennial and decadal scale variability over the last 1,000 years. The record is ...
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Woodborne, Stephan M.; Hall, Grant; Jones, Connor W.; Loader, Neil R.; Patrut, Adrian; Patrut, Roxana T.; Robertson, Iain; Winkler, Stephan R.; Winterbach, Christiaan W. (Studia Universitatis Babes-Bolyai, 2018)Climate records along aridity gradients where manifestations of climate change are most profound are important for testing climate models. The Kalahari Transect spans such a gradient, but instrumental records of ...
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Patrut, Roxana T.; Patrut, Adrian; Hall, Grant; Winterbach, Christiaan W.; Robertson, Iain; Ratiu, Ileana Andreea; Bocos-Bintintan, Victor; Rakosy, Laszlo; Woodborne, Stephan M. (MDPI, 2023-09-20)A high-resolution climate archive was reconstructed based on carbon isotope analysis and radiocarbon dating of the Chapman baobab in northeastern Botswana. The Chapman baobab, which exhibited an open ring-shaped structure ...
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Patrut, Adrian; Woodborne, Stephan M.; Von Reden, Karl F.; Hall, Grant; Hofmeyr, Michele; Lowy, Daniel A.; Patrut, Roxana T. (Public Library of Science, 2015-01)The article reports the radiocarbon investigation results of the Lebombo Eco Trail tree, a representative African baobab from Mozambique. Several wood samples collected from the large inner cavity and from the outer part ...
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Crossey, Bruce Gareth; Chimimba, Christian Timothy; Du Plessis, Cole; Ganswindt, Andre; Hall, Grant (Oxford University Press, 2021-10)The Kruger National Park (KNP) is home to the last genetically viable, minimally managed population of African wild dogs (Lycaon pictus, wild dogs) in South Africa. Until 2004, this population remained stable, but since ...
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Patrut, Adrian; Woodborne, Stephan M.; Patrut, Roxana T.; Hall, Grant; Rakosy, Laszlo; Winterbach, Christiaan; Von Reden, Karl F. (MDPI Publishing, 2019-11-05)The year 2016 witnessed the fall of a symbol of the botanical world: the historic Chapman baobab of Botswana. This article presents the results of our investigation of the standing and fallen tree. The Chapman baobab ...
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Wils, Tommy H.G.; Robertson, Iain; Woodborne, Stephan M.; Hall, Grant; Koprowski, Marcin; Eshetu, Zewdu (Wiley, 2016-05)Rising atmospheric CO2 concentrations affect climate directly through radiative effects and indirectly by changing plant water-use efficiency. Under global warming scenarios these widely reported changes will have ...
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Van den Berg, Gideon Leon; Vermeulen, Els; Valenzuela, Luciano O.; Berube, Martine; Ganswindt, Andre; Grocke, Darren R.; Hall, Grant; Hulva, Pavel; Neveceralova, Petra; Palsboll, Per J.; Carroll, Emma L. (Wiley, 2021-03)Rapid anthropogenic environmental change is expected to impact a host of ecological parameters in Southern Ocean ecosystems. Of critical concern are the consequences of these changes on the range of species that show ...
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Patrut, Adrian; Woodborne, Stephan M.; Patrut, Roxana T.; Rakosy, Laszlo; Lowy, Daniel A.; Hall, Grant; Von Reden, Karl F. (Nature Publishing Group, 2018-07)The African baobab is the biggest and longest-living angiosperm tree. By using radiocarbon dating we identified the stable architectures that enable baobabs to reach large sizes and great ages. We report that 9 of the 13 ...
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Jordaan, Rowan Keith; Somers, Michael J.; Hall, Grant; McIntyre, Trevor (NISC (Pty) Ltd and Informa UK Limited (trading as Taylor and Francis Group), 2020)Human-wildlife conflict is likely to increase as urbanisation increases. African clawless otters, Aonyx capensis, and spotted-necked otters, Hydrictis maculicollis, are illegally persecuted for their perceived role in ...
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Connan, Maëlle; Hall, Grant; Smale, Malcolm (Wiley, 2019-02)RATIONALE : Stable isotope analysis (SIA) has revolutionised ecological studies over the past thirty years. One of the major fields where SIA is applied in the marine environment is related to the definition of ecosystem ...
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Khumalo, Lerato; Kornelius, Gerrit; Van Zyl, Pieter G.; Hall, Grant (Edizioni Minerva Medica, 2020)Standard source apportionment techniques for atmospheric particulate (PM) collected near opencast coal mines using inorganic markers only are limited by the similarity in the mineral components in the overburden and at ...
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Patrut, Adrian; Woodborne, Stephan M.; Patrut, Roxana T.; Rakosy, Laszlo; Hall, Grant; Ratiu, Ileana-Andreea; Von Reden, Karl F. (Studia Universitatis Babes-Bolyai, 2017)The article discloses the main results of our new investigation of Platland tree, a.k.a. Sunland baobab, the largest known African baobab. Our recent research was motivated by the three successive splits of 2016 and ...
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Patrut, Adrian; Woodborne, Stephan M.; Von Reden, Karl F.; Hall, Grant; Patrut, Roxana T.; Rakosy, Laszlo; Danthu, Pascal; Leong Pock-Tsy, Jean-Michel; Lowy, Daniel A.; Margineanu, Dragos (Cambridge University Press, 2017-04)The article reports the growth stop phenomenon, which was documented only for baobabs, i.e. for trees belonging to the Adansonia genus. The identification of growth stop was enabled by radiocarbon dating, which allows a ...
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Smit, Chantelle; Javal, Marion; Conlong, Desmond E.; Hall, Grant; Terblanche, John S. (Wiley, 2021-08)An outbreak of Cacosceles newmannii (Coleoptera: Cerambycidae) was detected for the first time on sugarcane (Saccharum spp.) in 2015 in KwaZulu-Natal, South Africa. Although primary host plants of this native species remain ...
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Chizzola, Maddalena; Belton, L.E. (Lydia); Ganswindt, Andre; Greco, Ilaria; Hall, Grant; Swanepoel, Lourens; Dalerum, Fredrik (Frontiers Media, 2018-11-27)Due to the strong individual cost of being predated, potential prey species alter their behavior and physiology in response to predation risk. Such alterations may cause major indirect consequences on prey populations ...
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Conradie, Shannon Rose; Hall, Grant; Somers, Michael J.; McIntyre, Trevor (Southern African Wildlife Management Association, 2019)Animal-mediated nutrient transfer facilitates nutrient cycling in marine, freshwater and terrestrial ecosystems via the deposition of aquatically-derived nutrients such as nitrogen (N) and carbon (C). This mode of nutrient ...
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Rifkin, Riaan F.; Vikram, Surendra; Ramond, Jean-Baptiste; Rey-Iglesia, Alba; Brand, Tina B.; Porraz, Guillaume; Val, Aurore; Hall, Grant; Woodborne, Stephan M.; Le Bailly, Matthieu; Potgieter, Marnie; Underdown, Simon J.; Koopman, Jessica E.; Cowan, Don A.; Van de Peer, Yves; Willerslev, Eske; Hansen, Anders J. (BioMed Central, 2020-05-06)BACKGROUND : The archaeological incidence of ancient human faecal material provides a rare opportunity to explore the taxonomic composition and metabolic capacity of the ancestral human intestinal microbiome (IM). Here, ...
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Ramond, Jean-Baptiste; Woodborne, Stephan M.; Hall, Grant; Seely, Mary; Cowan, Don A. (Nature Publishing Group, 2018-05-02)Carbon exchange in drylands is typically low, but during significant rainfall events (wet anomalies) drylands act as a C sink. During these anomalies the limitation on C uptake switches from water to nitrogen. In the ...
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Hall, Grant; Wadley, Lyn; Woodborne, Stephan M. (Africa Magna Verlag, 2014)Middle Stone Age technological and behavioural developments in southern Africa are central to understanding the emergence of modern humans, and elucidating the role of environmental change in this trajectory is dependent ...
Now showing items 1-20 of 26