Search Results - "Wessels, Konrad J."

Rapid Land Cover Map Updates Using Change Detection and Robust Random Forest Classifiers by Wessels, Konrad J, Vanden Bergh, Frans, Roy, David P, Salmon, Brian P, Steenkamp, Karen C, MacAlister, Bryan, Swanepoel, Derick, Jewitt, Debbie

“…The paper evaluated the Landsat Automated Land Cover Update Mapping (LALCUM) system designed to rapidly update a land cover map to a desired nominal year using…”
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Biomass Increases Go under Cover: Woody Vegetation Dynamics in South African Rangelands by Mograbi, Penelope J, Erasmus, Barend F N, Witkowski, E T F, Asner, Gregory P, Wessels, Konrad J, Mathieu, Renaud, Knapp, David E, Martin, Roberta E, Main, Russell

“…Woody biomass dynamics are an expression of ecosystem function, yet biomass estimates do not provide information on the spatial distribution of woody…”
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Recent droughts in the Kruger National Park as reflected in the extreme climate index by Malherbe, Johan, Smit, Izak PJ, Wessels, Konrad J, Beukes, Philip J

“…Associated with the 2015/2016 El Niño, extreme drought occurred over the Lowveld of South Africa. The area includes the Kruger National Park (KNP). Significant…”
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Desertification in the Sahel: a reinterpretation of a reinterpretation by PRINCE, STEPHEN D, WESSELS, KONRAD J, TUCKER, COMPTON J, NICHOLSON, SHARON E

“…In semiarid regions the ratio of annual net primary production to precipitation, rain-use efficiency (RUE), has been used as an index of desertification. In a…”
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Fuelwood extraction intensity drives compensatory regrowth in African savanna communal lands by Mograbi, Penelope J., Witkowski, Ed T.F., Erasmus, Barend F.N., Asner, Gregory P., Fisher, Jolene T., Mathieu, Renaud, Wessels, Konrad J.

“…Woody biomass remains the primary energy source for domestic use in the developing world, raising concerns about woodland sustainability. Yet woodland…”
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Unsupervised Land Cover Change Detection: Meaningful Sequential Time Series Analysis by Salmon, Brian P., Olivier, Jan Corne, Wessels, Konrad J., Kleynhans, Waldo, van den Bergh, Frans, Steenkamp, Karen C.

“…An automated land cover change detection method is proposed that uses coarse spatial resolution hyper-temporal earth observation satellite time series data…”
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Vulnerability of South African animal taxa to climate change by Erasmus, Barend F. N., Van Jaarsveld, Albert S., Chown, Steven L., Kshatriya, Mrigesh, Wessels, Konrad J.

“…The responsiveness of South African fauna to climate change events is poorly documented and not routinely incorporated into regional conservation planning. We…”
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Relevance of rangeland degradation in semiarid northeastern South Africa to the nonequilibrium theory by Wessels, Konrad J., Prince, Stephen D., Carroll, Mark, Malherbe, Johan

“…According to the nonequilibrium theory, livestock grazing has a limited effect on long-term vegetation productivity of semiarid rangelands, which is largely…”
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Improving Land Cover Class Separation Using an Extended Kalman Filter on MODIS NDVI Time-Series Data by Kleynhans, Waldo, Olivier, Jan Corne, Wessels, Konrad J, van den Bergh, Frans, Salmon, Brian P, Steenkamp, Karen C

“…It is proposed that the normalized difference vegetation index time series derived from Moderate Resolution Imaging Spectroradiometer satellite data can be…”
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HiTempo: a platform for time-series analysis of remote-sensing satellite data in a high-performance computing environment by Van Den Bergh, Frans, Wessels, Konrad J, Miteff, Simeon, Van Zyl, Terence L, Gazendam, Albert D, Bachoo, Asheer K

“…Course resolution earth observation satellites offer large data sets with daily observations at global scales. These data sets represent a rich resource that,…”
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Land Cover Change Detection Using Autocorrelation Analysis on MODIS Time-Series Data: Detection of New Human Settlements in the Gauteng Province of South Africa by Kleynhans, Waldo, Salmon, Brian P., Olivier, Jan Corne, van den Bergh, Frans, Wessels, Konrad J., Grobler, Trienko L., Steenkamp, Karen C.

“…Human settlement expansion is one of the most pervasive forms of land cover change in the Gauteng province of South Africa. A method for detecting new…”
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What lies beneath: detecting sub‐canopy changes in savanna woodlands using a three‐dimensional classification method by Fisher, Jolene T, Witkowski, Ed T.F, Erasmus, Barend F.N, Mograbi, Penelope J, Asner, Gregory P, Aardt, Jan A.N, Wessels, Konrad J, Mathieu, Renaud, Rocchini, Duccio

“…QUESTION: Increasing population pressure, socio‐economic development and associated natural resource use in savannas are resulting in large‐scale land cover…”
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Savanna woody vegetation classification - now in 3-D by Fisher, Jolene T., Erasmus, Barend F.N., Witkowski, Ed T.F., van Aardt, Jan, Wessels, Konrad J., Asner, Gregory P.

“…Question: The co-existence of woody plants and grasses characterize savannas, with the horizontal and vertical spatial arrangement of trees creating a…”
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Identification of potential conflict areas between land transformation and biodiversity conservation in north-eastern South Africa by Wessels, Konrad J, Reyers, Belinda, van Jaarsveld, Albert S, Rutherford, Mike C

“…Transformation of natural vegetation to other land-uses, such as crop cultivation and urban development, presents the most important threat to biodiversity…”
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HiTempo: a platform for time-series analysis of remote-sensing satellite data in a high-performance computing environment: Satellite Time Series Analysis: From Local Analysis to a Global View by VAN DEN BERGH, Frans, WESSELS, Konrad J, MITEFF, Simeon, VAN ZYL, Terence L, GAZENDAM, Albert D, BACHOO, Asheer K

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Biomass Increases Go under Cover: Woody Vegetation Dynamics in South African Rangelands: e0127093 by Mograbi, Penelope J, Erasmus, Barend FN, Witkowski, E TF, Asner, Gregory P, Wessels, Konrad J, Mathieu, Renaud, Knapp, David E, Martin, Roberta E, Main, Russell

“…Woody biomass dynamics are an expression of ecosystem function, yet biomass estimates do not provide information on the spatial distribution of woody…”
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Monitoring land degradation in Southern Africa by assessing changes in primary productivity by Wessels, Konrad J

“…Land degradation is one of the most serious environmental problems of our time. Land degradation describes circumstances of reduced biological productivity…”
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Monitoring land degradation in Southern Africa by assessing changes in primary productivity by Wessels, Konrad J

“…Land degradation is one of the most serious environmental problems of our time. Land degradation describes circumstances of reduced biological productivity…”
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