Effects of a Wildfire on Several Desert Grassland Shrub Species

Abstract

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Mountain Sheep Habitat Characteristics in the Pusch Ridge Wilderness, Arizona

“…Abandoned However, King (1985) presents evidence that harassed mountain sheep fed less and were more wary than unharassed sheep. Purdy (1981) Studies of vegetational response to fire in desert ecosystems have documented patterns between burned and control plots similar to ray results (Humphrey 1949, White 1969, Bock and Bock 1978. Fire suppression reduces the high-visibility habitat needed by mountain sheep (Risenhoover 1981, Wakelyn 1987.…”

Using Resilience and Resistance Concepts to Manage Persistent Threats to Sagebrush Ecosystems and Greater Sage-grouse

“…This historical increase in livestock numbers undoubtedly impacted the natural disturbance regime of frequent fires by lessening the frequency, and increasing the pre-Anglo low levels of herbivory. Many studies have linked juniper expansion to increased livestock and decreased fire frequency (Jameson 1962, Johnsen 1962, Arnold 1964, White 1965, Jameson 1967, Jameson 1970, Clary and Jameson 1981, Pieper 1983, Miller and Wigand 1994, Allen and Breshears 1998, Lanner and Van Devender 1998.…”

“…One-seed juniper increased in density and cover with an increase in the time since the last fire, also causing a decrease in herbaceous production (Jameson 1962, Johnsen 1962, Arnold 1964, Arnold et al 1964, White 1965, Jameson 1967, Jameson 1970, Clary and Jameson 1981, Pieper 1983, Miller and Wigand 1994, Allen and Breshears 1998, Lanner and Van Devender 1998. Decreased herbaceous production caused a decline in organic matter inputs, resulting in lowered soil aggregate stability (Tisdall and Oades 1982).…”

Response of Chihuahuan Desert Mountain Shrub Vegetation to Burning

“…Pricklypear mortality was 3270 the first year following a prescribed burn (Cable 1967) and 28% the second growing season after an experimental tire (Reynolds and Bohning 1956), in two separate studies conducted in the Arizona Sonoran Desert. Survival of ocotillo (Fouquieria splendens) following a wildfire in the Sonoran Desert was 33Ycfor heavily damaged plants and 50% for plants only scorched (White 1969). Regeneration occurred primarily through basal sprouting.…”