干旱区生态环境知识资源中心(Arid): Effects of invasive plants on fire regimes and postfire vegetation diversity in an arid ecosystem

Arid

DOI	10.1002/ece3.5650
	Effects of invasive plants on fire regimes and postfire vegetation diversity in an arid ecosystem
	Underwood, Emma C.1,2; Klinger, Robert C.3; Brooks, Matthew L.3
通讯作者	Underwood, Emma C.
来源期刊	ECOLOGY AND EVOLUTION
ISSN	2045-7758
出版年	2019
卷号	9 期号:22 页码:12421-12435
英文摘要	We assessed the impacts of co-occurring invasive plant species on fire regimes and postfire native communities in the Mojave Desert, western USA. We analyzed the distribution and co-occurrence patterns of three invasive annual grasses (Bromus rubens, Bromus tectorum, and Schismus spp.) known to alter fuel conditions and community structure, and an invasive forb (Erodium cicutarium) which dominates postfire sites. We developed species distribution models (SDMs) for each of the four taxa and analyzed field plot data to assess the relationship between invasives and fire frequency, years postfire, and the impacts on postfire native herbaceous diversity. Most of the Mojave Desert is highly suitable for at least one of the four invasive species, and 76% of the ecoregion is predicted to have high or very high suitability for the joint occurrence of B. rubens and B. tectorum and 42% high or very high suitability for the joint occurrence of the two Bromus species and E. cicutarium. Analysis of cover from plot data indicated two or more of the species occurred in 77% of the plots, with their cover doubling with each additional species. We found invasive cover in burned plots increased for the first 20 years postfire and recorded two to five times more cover in burned than unburned plots. Analysis also indicated that native species diversity and evenness are negatively associated with higher levels of relative cover of the four invasive taxa. Our findings revealed overlapping distributions of the four invasives; a strong relationship between the invasives and fire frequency; and significant negative impacts of invasives on native herbaceous diversity in the Mojave. This suggests predicting the distributions of co-occurring invasive species, especially transformer species, will provide a better understanding of where native-dominated communities are most vulnerable to transformations following fire or other disturbances.
英文关键词	Bromus rubens Bromus tectorum co-occurring invasives Erodium cicutarium fire disturbance fire frequency Mojave Desert Schismus spp
类型	Article
语种	英语
国家	USA ; England
开放获取类型	Green Published, gold
收录类别	SCI-E
WOS记录号	WOS:000493852100001
WOS关键词	ALIEN ANNUAL PLANTS ; MOJAVE DESERT ; BLACKBRUSH COLEOGYNE ; BIOLOGICAL INVASIONS ; SHRUBLANDS ; GRASSES ; TRANSFORMATION ; COMPETITION ; DOMINANCE ; COMMUNITY
WOS类目	Ecology ; Evolutionary Biology
WOS研究方向	Environmental Sciences & Ecology ; Evolutionary Biology
EI主题词	2019-11-04
来源机构	United States Geological Survey ; University of California, Davis
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/310742
作者单位	1.Univ Calif Davis, Dept Environm Sci & Policy, Davis, CA 95616 USA; 2.Univ Southampton, Ctr Biol Sci, Southampton, Hants, England; 3.US Geol Survey, Western Ecol Res Ctr, Oakhurst, CA USA
推荐引用方式 GB/T 7714	Underwood, Emma C.,Klinger, Robert C.,Brooks, Matthew L.. Effects of invasive plants on fire regimes and postfire vegetation diversity in an arid ecosystem[J]. United States Geological Survey, University of California, Davis,2019,9(22):12421-12435.
APA	Underwood, Emma C.,Klinger, Robert C.,&Brooks, Matthew L..(2019).Effects of invasive plants on fire regimes and postfire vegetation diversity in an arid ecosystem.ECOLOGY AND EVOLUTION,9(22),12421-12435.
MLA	Underwood, Emma C.,et al."Effects of invasive plants on fire regimes and postfire vegetation diversity in an arid ecosystem".ECOLOGY AND EVOLUTION 9.22(2019):12421-12435.