Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.4996/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
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ISSN | 1933-9747 |
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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