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Browsing by Author "Erasmus, BFN"

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Impact of communal land use and conservation on woody vegetation structure in the Lowveld savannas of South Africa

Author: Wessels, Konrad J ; Mathieu, Renaud SA ; Erasmus, BFN ; Asner, GP ; Smit, IPJ ; Van Aardt, JAN ; Main, Russell S ; Fisher, J ; Marais, W ; Kennedy-Bowdoin, T ; Knapp, DE ; Emerson, R ; Jacobson, J Date: Jan 2011 Millions of people rely on savannas for ecosystem services, such as the provision of grazing and fuel wood, so it is important to determine the extent to which utilization affects woody vegetation resources. Using airborne LiDAR from the ... Read more
Impact of communal land use and conservation on woody vegetation structure in the Lowveld savannas of South Africa – Lidar results

Author: Wessels, Konrad J ; Mathieu, Renaud SA ; Erasmus, BFN ; Asner, GP ; Smit, IPJ ; Van Aardt, JAN ; Main, Russell S ; Fisher, J Date: Apr 2011 People in the rural, communal areas of South Africa rely on live fuel wood for more than 90% of their energy requirements. Using airborne lidar from the Carnegie Airborne Observatory (CAO) the authors compared tree canopy cover and height ... Read more
Impacts of communal fuelwood extraction on lidar-estimated biomass patterns of savanna woodlands

Author: Wessels, Konrad J ; Erasmus, BFN ; Colgan, M ; Asner, GP ; Mathieu, Renaud SA ; Twine, W ; Van Aardt, JAN ; Smit, I Date: Jul 2012 Approximately 54% of rural households in South Africa continue to use wood as their main source of energy, mainly for cooking and heating. The provision of biomass by savanna woodlands is thus of considerable value to rural households and ... Read more
Land cover change in the Kruger to Canyons Biosphere Reserve (1993-2006): a first step towards a conservation plan for the subregion

Author: Coetzer, KL ; Erasmus, BFN ; Witkowski, ETF ; Bachoo, AK Date: Jul 2010 This paper is a first step towards a conservation plan for the Kruger to Canyons Biosphere Reserve (K2C) on the South African Central Lowveld, quantifying the historical land-cover trends (1993-2006). During the analysis period, 36% of the ... Read more
Savanna woody vegetation classification – now in 3-D

Author: Fisher, JT ; Erasmus, BFN ; Witkowski, ETF ; Van Aardt, J ; Wessels, Konrad J ; Asner, GP Date: May 2013 The co-existence of woody plants and grasses characterize savannas, with the horizontal and vertical spatial arrangement of trees creating a heterogeneous biotic environment. To understand the influence of biogeophysical drivers on the spatial ... Read more
Three-dimensional woody vegetation structure across different land-use types and land-use intensities in a semi-arid savanna

Author: Fisher, J ; Erasmus, BFN ; Witkowski, E ; Van Aardt, J ; Asner, G ; Kennedy-Bowdoin, TY ; Knapp, D ; Mathieu, Renaud SA ; Wessels, Konrad J Date: Jul 2009 Factors influencing woody savanna vegetation structure across a land-use gradient of intensity (highly and lightly utilized communal rangeland) and type (national protected area, private game reserve and communal rangelands) were investigated. ... Read more
Toward structural assessment of semi-arid African savannahs and woodlands: The potential of multitemporal polarimetric RADARSAT-2 fine beam images

Author: Mathieu, Renaud SA ; Naidoo, Laven ; Cho, Moses A ; Leblon, B ; Main, Russell S ; Wessels, Konrad J ; Asner, GP ; Buckley, J ; Van Aardt, J ; Erasmus, BFN ; Smit, IPJ Date: Nov 2013 Woody vegetation structure affects wildlife habitat selection and species diversity for a wide range of taxa, and at a variety of scales. Indicators of woody structure can indicate the spatio-temporal variability of biodiversity, species ... Read more
Unsustainable fuelwood extraction from South African savannas

Author: Wessels, Konrad J ; Colgan, MS ; Erasmus, BFN ; Asner, GP ; Twine, WC ; Mathieu, Renaud SA ; Van Aardt, JAN ; Fisher, JT ; Smit, IPJ Date: Jan 2013 Wood and charcoal supply the majority of sub-Saharan Africa’s rural energy needs. The long-term supply of fuelwood is in jeopardy given high consumption rates. Using airborne light detection and ranging (LiDAR), we mapped and investigated ... Read more
What lies beneath: detecting sub-canopy changes in savanna woodlands using a three-dimensional classification method

Author: Fisher, JT ; Witkowski, TF ; Erasmus, BFN ; Mograbi, PJ ; Asner, GP ; Van Aardt, JAN ; Wessels, Konrad J ; Mathieu, Renaud SA Date: Jul 2015 Question: Increasing population pressure, socio-economic development and associated natural resource use in savannas are resulting in large-scale land cover changes, which can be mapped using remote sensing. Is a three-dimensional (3D) woody ... Read more

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Browsing by Author "Erasmus, BFN"

Browsing by Author "Erasmus, BFN"

Browse

All of ResearchSpace

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General Enquiries

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