Search Results - "Niekerk, Adriaan"

Drought and life‐history strategies in Heliophila (Brassicaceae) by Mucina, Ladislav, Mummenhoff, Klaus, Winter, Pieter, Niekerk, Adriaan, Mandáková, Terezie, Lysak, Martin A.

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Digital Elevation Models: Terminology and Definitions by Guth, Peter L, Niekerk, Adriaan Van, Grohmann, Carlos H, Muller, Jan-Peter, Hawker, Laurence, Florinsky, Igor V, Gesch, Dean, Reuter, Hannes I, Herrera-Cruz, Virginia, Riazanoff, Serge, López-Vázquez, Carlos, Carabajal, Claudia C, Albinet, Clement, Strobl, Peter

“…Digital elevation models (DEMs) provide fundamental depictions of the three-dimensionalshape of the Earth’s surface and are useful to a wide range of…”
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Implications of land use change for the sustainability of urban areas: A case study of Stellenbosch, South Africa by Musakwa, Walter, Niekerk, Adriaan Van

“…► Land use change, land use mix, land use frequency are indicators of sustainability. ► Findings show that land use change has a bearing on sustainable urban…”
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An evaluation of digital elevation models (DEMs) for delineating land components by Mashimbye, Zama Eric, de Clercq, Willem Petrus, Van Niekerk, Adriaan

“…Land component boundaries often coincide with transitions in environmental land properties such as soil, climate and biology. Image segmentation is an…”
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Monitoring sustainable urban development using built-up area indicators: a case study of Stellenbosch, South Africa by Musakwa, Walter, Van Niekerk, Adriaan

“…Rapid urbanisation in many developing countries causes land transformation from agricultural, rural, and natural landscapes into urban areas. Data to monitor…”
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Effect of pan-sharpening multi-temporal Landsat 8 imagery for crop type differentiation using different classification techniques by Gilbertson, Jason Kane, Kemp, Jaco, van Niekerk, Adriaan

“…•Machine learning can be employed to accurately differentiate between crops (∼95%).•Pan-sharpening Landsat 8 imagery dramatically improves crop classification…”
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Comparing Thresholding with Machine Learning Classifiers for Mapping Complex Water by Bangira, Tsitsi, Alfieri, Silvia Maria, Menenti, Massimo, van Niekerk, Adriaan

“…Small reservoirs play an important role in mining, industries, and agriculture, but storage levels or stage changes are very dynamic. Accurate and up-to-date…”
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Efficacy of multi-season Sentinel-2 imagery for compositional vegetation classification by Macintyre, Paul, van Niekerk, Adriaan, Mucina, Ladislav

“…•Sentinel-2 imagery is effective at classifying compositional vegetation patterns.•Compositional patterns are finer than land use/land cover…”
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Impact of Training Set Configurations for Differentiating Plantation Forest Genera with Sentinel-2 Imagery and Machine Learning by Higgs, Caley, van Niekerk, Adriaan

“…Forest plantations in South Africa impose genus-specific demands on limited soil moisture. Hence, plantation composition and distribution mapping is critical…”
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Estimating impacts of land cover change on erosion in a data-scarce catchment: Bot River, South Africa by de Waal, Jan, Watson, Andrew, Miller, Jodie, van Niekerk, Adriaan

“…Rainfall intensity and land use changes and from natural vegetation to cultivated fields both impact on river streamflows and sediment dynamics. Assessing the…”
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Earth Observation for Sustainable Urban Planning in Developing Countries: Needs, Trends, and Future Directions by Musakwa, Walter, van Niekerk, Adriaan

“…Cities are constantly changing and authorities face immense challenges in obtaining accurate and timely data to effectively manage urban areas. This is…”
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Crop type mapping using LiDAR, Sentinel-2 and aerial imagery with machine learning algorithms by Prins, Adriaan Jacobus, Van Niekerk, Adriaan

“…LiDAR data are becoming increasingly available, which has opened up many new applications. One such application is crop type mapping. Accurate crop type maps…”
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Feature clustering and ranking for selecting stable features from high dimensional remotely sensed data by Harris, Dugal, Van Niekerk, Adriaan

“…High dimensional remote sensing data sets typically contain redundancy amongst the features. Traditional approaches to feature selection are prone to…”
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Spectral Discrimination of Common Karoo Shrub and Grass Species Using Spectroscopic Data by Harmse, Christiaan Johannes, van Niekerk, Adriaan

“…Rangelands represent about 25% of the Earth’s land surface but are under severe pressure. Rangeland degradation is a gradually increasing global environmental…”
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Technology Smart Approach to Keep Drip Irrigation Systems Functional by Reinders, Felix B., Van Niekerk, Adriaan S.

“…Innovative technology that uses ultrasonic sound to clean drip pipes was developed to embrace the efficiencies offered by drip irrigation in order to preserve…”
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Incorporating risk mapping at multiple spatial scales into eradication management plans by Kaplan, Haylee, van Niekerk, Adriaan, Le Roux, Johannes J, Richardson, David M, Wilson, John R. U

“…The success of pro-active management of invasive plants depends on the ability to rapidly detect invasive populations and individuals. However, the factors…”
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Nutritional quality of wet distillers’ grains co–ensiled with whole–plant maize and its feeding value for lambs by Moyo, Robin, Niekerk, Willem Adriaan van, Hassen, Abubeker, Toit, Cornelius Jacobus Lindeque du, Coertze, Roelf, Adejoro, Festus Adeyemi

“…The high moisture content of wet distillers’ grains with solubles (WDGS) has limited its feeding value despite the relatively high nutritive value. The…”
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Evaluating Several Vegetation Indices Derived from Sentinel-2 Imagery for Quantifying Localized Overgrazing in a Semi-Arid Region of South Africa by Harmse, Christiaan J., Gerber, Hannes, van Niekerk, Adriaan

“…Rangeland monitoring aims to determine whether grazing management strategies meet the goals of sustainable resource utilization. The development of sustainable…”
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Vegetation patterns and hydro-geological drivers of freshwater rock pool communities in the monsoon-tropical Kimberley region, Western Australia by Cross, Adam T., Turner, Shane R., Merritt, David J., van Niekerk, Adriaan, Renton, Michael, Dixon, Kingsley W., Mucina, Ladislav

“…Question: Freshwater rock pools (FRP) are small highly stressed wetland habitats that harbour many range-restricted and specialized plants. We examined the…”
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Effects of climate change on species turnover and body mass frequency distributions of South African bird communities by Walther, Bruno A., van Niekerk, Adriaan

“…Climate change will lead to substantial shifts in species distributions. Most of the predictions of shifting distributions rely on modelling future…”
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