Arid
DOI10.4996/fireecology.0703059
FIRE EFFECTS ON PERENNIAL VEGETATION IN THE WESTERN COLORADO DESERT, USA
Steers, Robert J.; Allen, Edith B.
通讯作者Steers, Robert J.
来源期刊FIRE ECOLOGY
ISSN1933-9747
出版年2011
卷号7期号:3页码:59-74
英文摘要

The impacts of fire on creosote bush scrub vegetation have received attention recently as fire has become locally common throughout the Mojave and Sonoran deserts. One area of particular concern is western Coachella Valley, which forms the northwestern extent of the Colorado Desert. This is a major wildland-urban interface area that has been significantly impacted by atmospheric nitrogen deposition concomitant with fuel alterations from invasive annual grasses and increased ignition frequencies from human activities. Creosote bush scrub takes much longer than more mesic vegetation types to re-establish after fire, and the majority of desert species lack traits associated with resiliency to fire disturbance. Previous research in this area has only investigated once-burned stands for up to five years since fire. This study documents perennial vegetation from seven sites that represent a 2- to 28-year-old fire chronosequence. Our surveys revealed that fire significantly reduced shrub richness and diversity regardless of time since fire. Total shrub cover and density returned to or exceeded unburned levels at least 20 years after fire, although species composition was almost entirely brittlebush (Encelia farinosa), a short-lived shrub. Longer-lived shrubs indicative of unburned vegetation, such as creosote (Larrea tridentata), white bursage (Ambrosia dumosa), and white ratany (Krameria grayi), failed to recover. Shrub plus cacti richness and diversity were lower in burned stands regardless of time since fire. Encelia shrublands may form an alternate stable state following fire in this region.


英文关键词creosote diversity Encelia farinosa resiliency species richness vegetation structure
类型Article
语种英语
国家USA
收录类别SCI-E
WOS记录号WOS:000208707900006
WOS关键词MOJAVE DESERT ; SONORAN DESERT ; SPECIES-DIVERSITY ; PLANT SUCCESSION ; DYNAMICS ; SHRUB ; COMPETITION ; PATTERNS ; RECOVERY ; GROWTH
WOS类目Ecology ; Forestry
WOS研究方向Environmental Sciences & Ecology ; Forestry
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/168105
作者单位(1)Univ Calif Riverside, Dept Bot & Plant Sci, Riverside, CA 92521 USA;(2)Univ Calif Riverside, Ctr Conservat Biol, Riverside, CA 92521 USA
推荐引用方式
GB/T 7714
Steers, Robert J.,Allen, Edith B.. FIRE EFFECTS ON PERENNIAL VEGETATION IN THE WESTERN COLORADO DESERT, USA[J],2011,7(3):59-74.
APA Steers, Robert J.,&Allen, Edith B..(2011).FIRE EFFECTS ON PERENNIAL VEGETATION IN THE WESTERN COLORADO DESERT, USA.FIRE ECOLOGY,7(3),59-74.
MLA Steers, Robert J.,et al."FIRE EFFECTS ON PERENNIAL VEGETATION IN THE WESTERN COLORADO DESERT, USA".FIRE ECOLOGY 7.3(2011):59-74.
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