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Browsing by Subject "Fires"

Now showing items 1-14 of 14

Changes in ground-based solar ultraviolet radiation during fire episodes: a case study

Author: Wright, CY ; Archibald, S ; Garland, Rebecca M ; Naidoo, M ; Frost, F ; Phala, N Date: Sep 2013 Solar ultraviolet radiation (UVR) levels are affected by airborne aerosols, such as particles and gases released during biomass burning events. Two large-scale fires in South Africa were identified and selected based on their proximity to ... Read more
Classification of veldfire risk in South Africa for the administration of the legislation regarding fire management

Author: Kruger, FJ ; Forsyth, GG ; Kruger, LM ; Slater, K ; Le Maitre, David C ; Matshate, J Date: Nov 2006 The risk associated with vegetation fires (veldfires) in South Africa is substantial, and veldfires cause severe losses to life, property and the environment in most areas of the country. However, this risk has two parts: first, that arising ... Read more
Climate and the inter-annual variability of fire in southern Africa: a meta-analysis using long-term field data and satellite-derived burnt area data

Author: Archibald, S ; Nickless, A ; Govender, Nicolin ; Scholes, RJ ; Lehsten, V Date: Nov 2010 This study investigates inter-annual variability in burnt area in southern Africa and the extent to which climate is responsible for this variation. We compare data from long-term field sites across the region with remotely sensed burnt area ... Read more
A critical assessment of adaptive ecosystem management in a large savanna protected area in South Africa

Author: Van Wilgen, BW ; Biggs, HC Date: Apr 2011 This paper uses five inter-related topics (the management of rivers, fire regimes, invasive alien species, rare antelope and elephants) to assess 15 years of adaptive management in the Kruger National Park (KNP), South Africa. The importance ... Read more
Description of a fire and its effects in the Nylsvley Nature Reserve: a synthesis report

Author: Gandar, MV Date: Oct 1982 This report synthesizes information gained from a study of an experimental fire ignited in an 182 ha portion of the Savanna Ecosystem Project study area in early September 1978. Three smaller fires, each covering 1 ha within this area, were ... Read more
Detecting historic informal settlement fires with sentinel 1 and 2 satellite data - Two case studies in Cape Town

Author: Gibson, L ; Engelbrecht, Jeanine ; Rush, D Date: Sep 2019 Increasing global urbanisation is leading to a rise in the number of people living in informal settlements, challenging our ability to achieve sustainable development goals. As a consequence of high building density, inadequate building methods ... Read more
The Effect of Surface Fire in Savannah Systems in the Kruger National Park (KNP), South Africa, on the Backscatter of C-Band Sentinel-1 Images

Author: Mathieu, Renaud ; Main, Russell S ; Roy, DP ; Naidoo, Laven ; Yang, H Date: Jun 2019 Savannahs are mixed woody-grass communities where low-intensity surface fires are common, affecting mostly the grass layer and rarely damaging trees. We investigated the effect of surface fires in a savannah system in the Kruger National Park, ... Read more
Field determination of biomass burning emission ratios and factors via open-path FTIR spectroscopy and fire radiative power assessment: headfire, backfire and residual smouldering combustion in African savannahs

Author: Wooster, MJ ; Freeborn, PH ; Archibald, S ; Oppenheimer, C ; Roberts, GJ ; Smith, TEL ; Govender, N ; Burton, M ; Palumbo, I Date: 2011 Biomass burning emissions factors are vital to quantifying trace gases releases from vegetation fires. Here the authors evaluate emissions factors for a series of savannah fires in Kruger National Park (KNP), South Africa using ground-based ... Read more
Fire history of the savanna ecosystems in the Kruger National Park, South Africa, between 1941 and 1996

Author: Van Wilgen, BW ; Biggs, H ; O'Regan, SP ; Mare, N Date: Apr 2000 This paper analyses the fire history of the Kruger National Park (1.9 million ha), South Africa, for different periods in the park's history, where fire protection was followed by prescribed burning and then a 'natural' (lightning) fire policy. ... Read more
Identifying individual fires from satellite-derived burned area data

Author: Archibald, S ; Roy, DP Date: Jul 2009 An algorithm for identifying individual fires from the Modis burned area data product is introduced for southern Africa. This algorithm gives the date of burning, size of fire, and location of the centroid for all fires identified over 8 years ... Read more
Increased tree densities in South African savannas: >50 years of data suggests CO2 as driver

Author: Buitenwerf, R ; Bond, WJ ; Stevens, N ; Trollope, WSW Date: Feb 2012 For the past century, woody plants have increased in grasslands and savannas worldwide. Woody encroachment may significantly alter ecosystem functioning including fire regimes, herbivore carrying capacity, biodiversity and carbon storage ... Read more
Potential fire detection based on Kalman-driven change detection

Author: Van Den Bergh, F ; Udahemuka, G ; Van Wyk, BJ Date: Jul 2009 A new active fire event detection algorithm for data collected with the Spinning Enhanced Visible and Infrared Imager (SEVIRI) sensor, based on the extended Kalman filter, is introduced. Instead of using the observed temperatures of the spatial ... Read more
Proteaceae juvenile periods and post-fire recruitment as indicators of minimum fire return interval in eastern coastal fynbos

Author: Kraaij, T ; Cowling, RM ; Van Wilgen, BW ; Schutte-Vlok, A Date: May 2012 Fire management practices aimed at biodiversity conservation are often in conflict with hazard reduction requirements. Particularly in protected areas where such conflict of interest exists, the question is asked: what are the ecological ... Read more
Southern African advanced fire information system

Author: McFerren, G ; Frost, P Date: May 2009 This paper concerns the development of the South African Advanced Fire Information System (AFIS). Researchers describe a use case of wildfires causing electricity transmission lines to be adversely affected. This use case provided the rationale ... Read more

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Browsing by Subject "Fires"

Browsing by Subject "Fires"

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