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DOI	10.1007/s00442-019-04562-2
	Fire, rodent herbivory, and plant competition: implications for invasion and altered fire regimes in the Mojave Desert
	Bishop, Tara B. B.1,2; Gill, Richard A.1; McMillan, Brock R.1; St Clair, Samuel B.1
通讯作者	St Clair, Samuel B.
来源期刊	OECOLOGIA
ISSN	0029-8549
EISSN	1432-1939
出版年	2020
卷号	192 期号:1 页码:155-167
英文摘要	Biological invasions are responsive to changing wildfire regimes related to human activities that are altering biological communities. Our objective was to investigate how fire, rodent activity, and competition among plant species modify plant community structure, invasion patterns, and vulnerability to altered fire regimes. We imposed experimental fires, and reduced rodent density using fencing in a full factorial design and quantified competitive interactions among plant species in the northeast Mojave Desert that has experienced dramatic increases in plant invasion and fire in recent years. Vegetation surveys were conducted in the experimental plots to determine plant density, cover, and biomass of herbaceous plants over a 5-year period. Rodent exclusion increased the density, cover, and biomass of Bromus rubens, an invasive annual grass, and density of forb species. In contrast, rodent exclusion decreased the density, cover, and biomass of Schismus spp. another dominant annual invader. Fire increased Schismus spp. and forb species density, cover, and biomass but decreased B. rubens density. Negative spatial correlation between B. rubens and Schismus spp., and forbs indicated interspecific competition among the dominant plant species. Fire reduced rodent community diversity (Shannon's) 2.5-fold, which was correlated with increases in B. rubens cover and biomass, and native forb diversity. Fire, high rodent diversity, and competition from the other plant species may decrease fire potential in our study system by reducing the density and biomass of B. rubens, which because of its taller growth form tends to ignite and carry fire better than Schismus spp. and forbs.
英文关键词	Annual grasses Invasive grass-fire cycles Plant community assembly Red brome State change
类型	Article
语种	英语
国家	USA
收录类别	SCI-E
WOS记录号	WOS:000499424700001
WOS关键词	BIOTIC RESISTANCE ; APPARENT COMPETITION ; SEED PREDATION ; BROMUS ; DISTURBANCE ; COMMUNITIES ; GRASSES ; IMPACTS ; POPULATIONS ; SHRUBLANDS
WOS类目	Ecology
WOS研究方向	Environmental Sciences & Ecology
EI主题词	2019-11-29
来源机构	United States Geological Survey
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/311018
作者单位	1.Brigham Young Univ, Dept Plant & Wildlife Sci, 4124 LSB, Provo, UT 84602 USA; 2.US Geol Survey, Southwest Biol Sci Ctr, 2290 SW Resource Blvd, Moab, UT 84532 USA
推荐引用方式 GB/T 7714	Bishop, Tara B. B.,Gill, Richard A.,McMillan, Brock R.,et al. Fire, rodent herbivory, and plant competition: implications for invasion and altered fire regimes in the Mojave Desert[J]. United States Geological Survey,2020,192(1):155-167.
APA	Bishop, Tara B. B.,Gill, Richard A.,McMillan, Brock R.,&St Clair, Samuel B..(2020).Fire, rodent herbivory, and plant competition: implications for invasion and altered fire regimes in the Mojave Desert.OECOLOGIA,192(1),155-167.
MLA	Bishop, Tara B. B.,et al."Fire, rodent herbivory, and plant competition: implications for invasion and altered fire regimes in the Mojave Desert".OECOLOGIA 192.1(2020):155-167.