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Browsing by Author "Schlerf, M"

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Estimating grass nutrients and biomass as an indicator of rangeland (forage) quality and quantity using remote sensing in Savanna ecosystems

Author: Ramoelo, Abel ; Cho, Moses A ; Mathieu, Renaud SA ; Skidmore, AK ; Schlerf, M ; Heitkönig, IMA Date: Oct 2012 Grass quality and quantity information plays a crucial role in understanding the distribution, densities and population dynamics of herbivores (i.e. livestock and wildlife). Leaf nitrogen (N) and biomass (g/ m2) are indicators of grass quality ... Read more
Integrating environmental and in situ hyperspectral remote sensing variables for grass nitrogen estimation in savannah ecosystems

Author: Ramoelo, Abel ; Cho, Moses A ; Mathieu, Renaud SA ; Skidmore, AK ; Schlerf, M ; Heitkonig, IMA ; Prins, HHT Date: Apr 2011 Information about the distribution of grass nitrogen (N) concentration is crucial in understanding rangeland vitality and facilitates effective management of wildlife and livestock. A challenge in estimating grass N concentration using remote ... Read more
Non-linear partial least square regression increases the estimation accuracy of grass nitrogen and phosphorus using in situ hyperspectral and environmental data

Author: Ramoelo, Abel ; Skidmore, AK ; Cho, Moses A ; Mathieu, Renaud SA ; Heitkönig, IMA ; Dudeni-Tlhone, N ; Schlerf, M ; Prins, HHT Date: Jun 2013 Grass nitrogen (N) and phosphorus (P) concentrations are direct indicators of rangeland quality and provide imperative information for sound management of wildlife and livestock. It is challenging to estimate grass N and P concentrations using ... Read more
Regional estimation of savanna grass nitrogen using the red-edge band of the RapidEye sensor

Author: Ramoelo, Abel ; Skidmore, AK ; Cho, Moses A ; Schlerf, M ; Mathieu, Renaud SA ; Heitkönig, IMA Date: Oct 2012 The regional mapping of grass nutrients is of interest in the sustainable planning and management of livestock and wildlife grazing. The objective of this study was to estimate and map foliar and canopy nitrogen (N) at a regional scale using ... Read more
Savanna grass nitrogen to phosphorus ratio estimation using field spectroscopy and the potential for estimation with imaging spectroscopy

Author: Ramoelo, Abel ; Skidmore, A ; Schlerf, M ; Heitkönig, I ; Mathieu, Renaud SA ; Cho, Moses A Date: Aug 2013 Determining the foliar N: P ratio provides a tool for understanding nutrient limitation on plant production and consequently for the feeding patterns of herbivores. In order to understand the nutrient limitation at landscape scale, remote ... Read more
Towards regional mapping of grass nutrients using remote sensing in Greater Kruger National Park

Author: Ramoelo, Abel ; Skidmore, AK ; Cho, Moses A ; Mathieu, Renaud SA ; Schlerf, M ; Heitkonig, I ; Prins, HHT Date: Mar 2011 Regional maps of grass nutrients are important to inform decision making regarding the management of savanna ecosystems. Grass nutrients plays a crucial role in understanding the distribution, densities and feeding patterns of both wild ... Read more
Water-removed spectra increase the retrieval accuracy when estimating savanna grass nitrogen and phosphorus concentrations

Author: Ramoelo, Abel ; Skidmore, AK ; Schlerf, M ; Mathieu, Renaud SA ; Heitkönig, IMA Date: 2011 Information about the distribution of grass foliar nitrogen (N) and phosphorus (P) is important for understanding rangeland vitality and for facilitating the effective management of wildlife and livestock. Water absorption effects in the ... Read more

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Browsing by Author "Schlerf, M"

Browsing by Author "Schlerf, M"

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