Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1007/s00442-014-3214-1 |
Assessing the impact of fire on the spatial distribution of Larrea tridentata in the Sonoran Desert, USA | |
Fuentes-Ramirez, Andres1; Mudrak, Erika L.1; Caragea, Petrutza C.2; Holzapfel, Claus3; Moloney, Kirk A.1 | |
通讯作者 | Fuentes-Ramirez, Andres |
来源期刊 | OECOLOGIA
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ISSN | 0029-8549 |
EISSN | 1432-1939 |
出版年 | 2015 |
卷号 | 178期号:2页码:473-484 |
英文摘要 | In southwestern American deserts, fire has been historically uncommon because of insufficient continuity of fuel for spreading. However, deserts have been invaded by exotic species that now connect the empty space between shrubs to carry fire. We hypothesized that fire would change the spatial distribution of surviving Larrea tridentata shrubs. We established two study plots, one each in a burned and unburned area, and recorded location and living status of all shrubs. We performed univariate and bivariate point pattern analyses to characterize the impact of fire on the overall distribution of shrubs. Additionally, we used a simple wildfire model to determine how close we could come to reconstructing the observed spatial pattern of living and dead shrubs. We found a hyper-dispersed pattern of shrubs at finer scales and a random pattern at broader scales for both the unburned plot and for the living and dead shrubs combined in the burned plot, the latter providing an approximation of the pre-burn distribution of shrubs. After fire, living shrubs showed a clustered pattern at scales > 2.5 m, whereas dead shrubs were randomly distributed, indicating that fire caused a change in the spatial pattern of the surviving shrubs. The fire model was able to partially reconstruct the spatial pattern of Larrea, but created a more clustered distribution for both living and dead shrubs. Our study reinforces the key role of fire in altering landscapes that had not been habituated to fire, and suggests the existence of potential cascading effects across the entire plant community. |
英文关键词 | Spatial pattern Desert shrublands Pair correlation function (PCF) Point pattern analysis Ecological fire effects |
类型 | Article |
语种 | 英语 |
国家 | USA |
收录类别 | SCI-E |
WOS记录号 | WOS:000354900700015 |
WOS关键词 | AMERICAN SOUTHWEST ; PLANT COMMUNITY ; POINT PATTERNS ; MOJAVE DESERT ; CREOSOTE BUSH ; ECOLOGY ; ASSOCIATION ; BUFFELGRASS ; ARIZONA ; SHRUB |
WOS类目 | Ecology |
WOS研究方向 | Environmental Sciences & Ecology |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/189405 |
作者单位 | 1.Iowa State Univ, Dept Ecol Evolut & Organismal Biol, Ames, IA 50011 USA; 2.Iowa State Univ, Dept Stat, Ames, IA 50011 USA; 3.Rutgers State Univ, Dept Biol Sci, Newark, NJ 07102 USA |
推荐引用方式 GB/T 7714 | Fuentes-Ramirez, Andres,Mudrak, Erika L.,Caragea, Petrutza C.,et al. Assessing the impact of fire on the spatial distribution of Larrea tridentata in the Sonoran Desert, USA[J],2015,178(2):473-484. |
APA | Fuentes-Ramirez, Andres,Mudrak, Erika L.,Caragea, Petrutza C.,Holzapfel, Claus,&Moloney, Kirk A..(2015).Assessing the impact of fire on the spatial distribution of Larrea tridentata in the Sonoran Desert, USA.OECOLOGIA,178(2),473-484. |
MLA | Fuentes-Ramirez, Andres,et al."Assessing the impact of fire on the spatial distribution of Larrea tridentata in the Sonoran Desert, USA".OECOLOGIA 178.2(2015):473-484. |
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