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Deciphering the distribution of the savanna biome

Author: Lehmann, CER ; Archibald, SA ; Hoffmann, WA ; Bond, WJ Date: Jul 2011 We aimed to identify the limits of savanna across Africa, Australia and South America. We based our investigation on the rich history of hypotheses previously examined; that the limits of savanna are variously determined by rainfall, rainfall ... Read more
Managing the changing risk of fire in the South African landscape

Author: Van Wilgen, BW ; Archibald, S ; Frost, P Date: Nov 2008 Fires are a natural and common feature of many of South Africa's landscapes. The research has three main goals namely, to quantify the nature of the risks associated with vegetation fires, to assess how these risks may change in future and ... Read more
Methods to determine the impact of rainfall on fuels and burned area in southern African savannas

Author: Archibald, S ; Nickless, A ; Scholes, RJ ; Schulze, R Date: Nov 2010 In southern African savannas, grass production, and therefore the annual extent of fire, is highly dependent on rainfall. This response has repeatedly been noted in the literature but authors used different input variables and modelling ... Read more
Planning for emergency services using GIS-based geographic accessibility analysis

Author: Green, Chéri A ; Mans, Gerbrand G ; Schmitz, P ; McKelly, D ; Te Water, M Date: May 2014 Municipalities and metropolitan structures are required by law to provide sufficient response to emergency situations. In order to respond efficiently to disasters such as fire and flooding, it is necessary to place facilities optimally. This ... Read more
Recent fire history of the Table Mountain National Park and implications for fire management

Author: Forsyth, GG ; Van Wilgen, BW Date: 2008 This paper provides an assessment of fire regimes in the Table Mountain National Park over the past four decades. The authors compiled a GIS database of all fires between 1970 and 2007 and analysed the fire regime in terms of the frequency, ... Read more
A review of fire accidents, flammability and toxicity of burning textiles

Author: Van Rensburg, NJJ Date: Sep 1982 The effect of fire and its products (heat, smoke and irritant or toxic gases) on the human being, as well as the response of people in a fire situation, are reviewed. Some data on the causes of fire injuries are given and the factors causing ... Read more
South African programme for the SCOPE mid-term project on the ecological effects of fire.

Author: Huntley, BJ Date: Sep 1978 The aims, organization and activities of the South African programme within the SCOPE project on the 'Ecological effects of fire1 are described. The short-term (1977-1980) programme is aimed at the synthesis of existing knowledge and will ... Read more
Three centuries of managing introduced conifers in South Africa: benefits, impacts, changing perceptions and conflict resolution

Author: Van Wilgen, BW ; Richardson, DM Date: May 2012 Alien conifers, mainly pines, have been planted in South Africa for a range of purposes for over 300 years. Formal plantations cover 660 000 ha of the country, and invasive stands of varying density occur on a further 2.9 million ha. These ... Read more
Tree-grass interactions in savannas

Author: Scholes, RJ ; Archer, SR Date: 1997 Savannas occur where trees and grasses interact to create a biome that is neither grassland nor forest. Woody and gramineous plants interact by many mechanisms, some negative (competition) and some positive (facilitation). The strength and ... Read more
Validation of the MODIS burned-area products across different biomes in South Africa

Author: Tsela, PL ; Van Helden, P ; Frost, P ; Wessels, Konrad J ; Archibald, S Date: Jul 2010 The Moderate Resolution Imaging Spectroradiometer (MODIS) time-series data afford the remote sensing community a unique opportunity to investigate the frequency and distribution of fires. Previous research that validated the MODIS burned area ... 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 Subject "Fire"

Browsing by Subject "Fire"

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All of ResearchSpace

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