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Browsing by Author "Kemp, J"

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Change detection of bare areas in the Xolobeni region, South Africa using Landsat NDVI

Author: Singh, RG ; Engelbrecht, Jeanine ; Kemp, J Date: Jun 2015 Identification and protection of areas that are vulnerable to erosion is essential for the conservation of the sensitive wetlands and estuarine ecosystems along the Xolobeni coastal strip. The forecasting of these erosion susceptible areas ... Read more
Characterisation of two bifunctional cellulase-xylanase enzymes isolated from a bovine rumen metagenome library

Author: Rashamuse, KJ ; Visser, Daniel F ; Hennessy, F ; Kemp, J ; Van der Merwe, MP ; Badenhorst, J ; Ronneburg, T ; Francis-Pope, R ; Brady, D Date: Feb 2013 Ruminant digestive tract microbes hydrolyse plant biomass, and the application of metagenomic techniques can provide good coverage of their glycosyl hydrolase enzymes. A metagenomic library of circa 70,000 fosmids was constructed from bacterial ... Read more
Detection of sinkhole precursors through SAR interferometry: radar and geological considerations

Author: Theron, Andre ; Engelbrecht, Jeanine ; Kemp, J ; Kleynhans, Waldo ; Turnbull, T Date: Jun 2017 Sinkholes are an unpredictable geohazard that endanger life and property in dolomitic terrains. Sinkholes are a significant threat in Gauteng, South Africa’s most populated and urbanized province. Small-scale surface subsidence is frequently ... Read more
Methods of flood extent mapping using SAR imagery in the Zambezi (Caprivi) Region, Namibia

Author: Kemp, J ; Bessinger, M ; Lück-Vogel, Melanie Date: Oct 2014 Flood extent mapping is an important disaster response tool made possible by synthetic aperture radar (SAR). The ability to rapidly assess ground conditions during flood events, independent of cloud cover or time of day, makes SAR imagery ... Read more
Monitoring soil erosion features using a time series of airborne remote sensing data: a case study Wild Coast, South Africa

Author: Singh, RG ; Engelbrecht, Jeanine ; Botha, GA ; Kemp, J Date: Oct 2014 Soil erosion is a major geohazard that may pose both localized and off-site threats. Erosion by wind and water has caused severe land degradation in the Eastern Cape and if left uncontrolled may have detrimental consequences in critical ... Read more
Potential of sinkhole precursor detection through interferometric SAR

Author: Theron, Andre ; Engelbrecht, Jeanine ; Kemp, J Date: Aug 2016 Sinkholes are an unpredictable geohazard that endangers life and structures in susceptible areas globally. Subsidence sinkholes occur above cavernous bedrock comprised of highly soluble evaporates or calcium carbonates such as dolomite or ... Read more
A simple normalized difference approach to burnt area mapping using multi-polarisation C-Band SAR

Author: Engelbrecht, Jeanine ; Theron, Andre ; Vhengani, Lufuno ; Kemp, J Date: Jul 2017 In fire-prone ecosystems, periodic fires are vital for ecosystem functioning. Fire managers seek to promote the optimal fire regime by managing fire season and frequency requiring detailed information on the extent and date of previous burns. ... Read more
The use of Landsat and aerial photography for the assessment of coastal erosion and erosion susceptibility in False Bay, South Africa

Author: Callaghan, K ; Engelbrecht, Jeanine ; Kemp, J Date: Jun 2015 Coastal erosion is a worldwide hazard, the consequences of which can only be mitigated via thorough and efficient monitoring of erosion. This study aimed to employ remote sensing techniques on aerial photographs and Landsat TM/ETM+ imagery ... Read more
Using remote sensing in support of environmental management: A framework for selecting products, algorithms and methods

Author: De Klerk, HM ; Gilbertson, J ; Lück-Vogel, Melanie ; Kemp, J ; Munch, Z Date: Nov 2016 Traditionally, to map environmental features using remote sensing, practitioners will use training data to develop models on various satellite data sets using a number of classification approaches and use test data to select a single ‘best ... Read more
Variation in rhizosphere nutrient cycling affects the source of nitrogen acquisition in wild and cultivated Aspalathus linearis (N.L.Burm.) R.Dahlgren plants

Author: Kemp, J ; Lotter, Johanna M ; Meyer, A ; Kleinert, A ; Pérez-Fernández, M ; Valentine, A Date: May 2018 We investigated the different functional strategies of N nutrition of cultivated and wild varieties of the legume Aspalathus linearis (N.L.Burm.) R.Dahlgren during wet and dry seasons in the Cape Floristic Region. The study addressed differences ... Read more

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Browsing by Author "Kemp, J"

Browsing by Author "Kemp, J"

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All of ResearchSpace

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Legislation and compliance

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