Bushfires as a hazard to organisms.
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TextLanguage: ENG Publication details: MAY 1976Description: 12p., 21 refs, 1 tableReport number: National GovernmentSubject: A hazard is a threat or risk and as such has a probability varying from zero to unity. The hazard to injury or death of organisms is considered at three interrelated levels which are the individual, population and species levels. The hazards to injury and death of individual plants and animals from a single uniform fire are considered from an energy balance point of view and it is shown that the hazard posed varies widely for different organisms: the hazard to individuals of one species may be zero while in the same area the hazard can be unity to individuals of another species. Within a large population of organisms subject to a single large fire, however, the hazards to individuals within the population may vary because variation of the fire's characteristics may be great and the variation among individuals may also be extensive. The hazard to a species from a series of fires depends on the types of fires, intensities of fires, seasons of burning, and fire frequencies - the fire regime - as well as the life cycle and other characteristics of the organisms concerned. Absence of fire can be just as much a hazard as its presence for some organisms
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Australian Emergency Management Library | BOOK | 574.5222 GIL (Browse shelf(Opens below)) | Available | 005258159 |
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Symposium Dates 26-29 May 1976
A hazard is a threat or risk and as such has a probability varying from zero to unity. The hazard to injury or death of organisms is considered at three interrelated levels which are the individual, population and species levels. The hazards to injury and death of individual plants and animals from a single uniform fire are considered from an energy balance point of view and it is shown that the hazard posed varies widely for different organisms: the hazard to individuals of one species may be zero while in the same area the hazard can be unity to individuals of another species. Within a large population of organisms subject to a single large fire, however, the hazards to individuals within the population may vary because variation of the fire's characteristics may be great and the variation among individuals may also be extensive. The hazard to a species from a series of fires depends on the types of fires, intensities of fires, seasons of burning, and fire frequencies - the fire regime - as well as the life cycle and other characteristics of the organisms concerned. Absence of fire can be just as much a hazard as its presence for some organisms
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