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You are here >1Up Info > Wildlife, Animals, and Plants > Plant Species > Shrub > Species: Mimosa biuncifera | Catclaw Mimosa
 

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FIRE EFFECTS

SPECIES: Mimosa biuncifera | Catclaw Mimosa
IMMEDIATE FIRE EFFECT ON PLANT : Fires generally top-kill catclaw mimosa. By itself, it provides little fuel because of its open growth form and because its small leaves contribute very little to ground fuels when they drop [25]. However, the fuel of surrounding plants is often enough to ignite catclaw mimosa and cause its stems to burn off [25]. Catclaw mimosa commonly occurs in Arizona chaparral where wildfires are often severe, defoliating all aboveground vegetation and leaving only charred stems and a layer of ash over mineral soil [31]. DISCUSSION AND QUALIFICATION OF FIRE EFFECT : NO-ENTRY PLANT RESPONSE TO FIRE : Following top-kill by fire, catclaw mimosa survives by producing numerous sprouts from the root crown [6,20]. Because plants usually survive fire, density is generally not affected by burning. Although catclaw mimosa was not abundant in a study in desert mountain shrub vegetation in the Guadalupe Mountains, sampling of several 3- to 7-year-old burns showed that its frequency was greater on burned than on unburned sites [1]. Rapid regrowth allows plants to fully recover preburn cover within about 5 years [25,32]. Regrowth of top-killed catclaw mimosa plants was observed following several lightning- and man-caused fires in and near Carlsbad Caverns National Park, New Mexico. Here, top-killed plants sprouted and grew 8 to 10 inches (20-25 cm) in one growing season [25]. Following prescribed spring burns in desert grasslands and oak woodlands in southeastern Arizona, sprouts of catclaw mimosa regained 58 to 67 percent of plant preburn heights within two growing seasons as summarized below [3]. Emory oak/Arizona white oak desert grassland woodland date sampled mean height of plants mean height of plants burned area control area burned area control area inches/cm inches/cm inches/cm inches/cm Aug 1983 (prefire) 21.8/55.4 17.8/45.4 25.2/63.9 18.7/47.4 Aug 1984 (3 months 8.9/22.6 17.5/44.7 4.9/12.5 11.5/29.2 postfire) Aug 1985 (15 months 14.6/37.0 16.4/41.7 14.6/37.0 15.8/40.1 postfire) DISCUSSION AND QUALIFICATION OF PLANT RESPONSE : NO-ENTRY FIRE MANAGEMENT CONSIDERATIONS : NO-ENTRY

Related categories for Species: Mimosa biuncifera | Catclaw Mimosa

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Information Courtesy: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station, Fire Sciences Laboratory. Fire Effects Information System

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