Cross-Scale Analysis of Fire Regimes
نویسندگان
چکیده
منابع مشابه
Mapping fire regimes across time and space: Understanding coarse and fine-scale fire patterns
Maps of fire frequency, severity, size, and pattern are useful for strategically planning fire and natural resource management, assessing risk and ecological conditions, illustrating change in disturbance regimes through time, identifying knowledge gaps, and learning how climate, topography, vegetation, and land use influence fire regimes. We review and compare alternative data sources and appr...
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Fire has been an important ecosystem process in the Sierra Nevada for thousands of years. Before the area was settled in the 1850s, fires were generally frequent throughout much of the range. The frequency and severity of these fires varied spatially and temporally depending upon climate, elevation, topography, vegetation, edaphic conditions, and human cultural practices. Current management str...
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California shrubland wildfires are increasingly destructive, and it is widely held that the problem has been intensified by fire suppression, leading to larger, more intense wildfires. However, analysis of the California Statewide Fire History Database shows that, since 1910, fire frequency and area burned have not declined, and fire size has not increased. Fire rotation intervals have declined...
متن کاملLandscape Management of Fire and Grazing Regimes Alters the Fine-Scale Habitat Utilisation by Feral Cats
Intensification of fires and grazing by large herbivores has caused population declines in small vertebrates in many ecosystems worldwide. Impacts are rarely direct, and usually appear driven via indirect pathways, such as changes to predator-prey dynamics. Fire events and grazing may improve habitat and/or hunting success for the predators of small mammals, however, such impacts have not been ...
متن کاملVariability of tundra fire regimes in Arctic Alaska: millennial-scale patterns and ecological implications
Tundra fires have important ecological impacts on vegetation, wildlife, permafrost, and carbon cycling, but the pattern and controls of historic tundra fire regimes are poorly understood. We use sediment records from four lakes to develop a 2000-yr fire and vegetation history in a highly flammable tundra region and compare this history with previously published fire records to examine spatial a...
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ژورنال
عنوان ژورنال: Ecosystems
سال: 2007
ISSN: 1432-9840,1435-0629
DOI: 10.1007/s10021-007-9070-7