干旱区生态环境知识资源中心(Arid): Group effects of a non-native plant invasion on rodent abundance

Arid

DOI	10.1002/ecs2.2544
	Group effects of a non-native plant invasion on rodent abundance
	Kluever, Bryan M.1; Smith, Trinity N.2; Gese, Eric M.3
通讯作者	Kluever, Bryan M.
来源期刊	ECOSPHERE
ISSN	2150-8925
出版年	2019
卷号	10 期号:1
英文摘要	Cheatgrass (Bromus tectorum) is the most prolific invading plant in western North America. Investigations determining the impact of this invasion on population state variables and community dynamics of rodents have largely occurred at the community or species level, creating a knowledge gap as to whether rodents affiliated by a shared taxonomy or other grouping are differentially affected by cheatgrass invasion. We examined rodent abundance along a gradient of cheatgrass cover using various groupings of two nocturnal rodent taxa comprising the majority of the rodent community in the Great Basin Desert. In the summers of 2010-2013, rodents were sampled and vegetation was measured on the U. S. Army Dugway Proving Ground in the Great Basin Desert of Utah, USA. We separately examined estimates of rodent abundance for all combined species within the Cricetidae and Heteromyidae families, the most numerically dominant species, and uncommon species pooled in relation to cheatgrass invasion severity. We detected an expected negative linear relationship between invasion severity and abundance for all cricetid groupings, including the most numerically dominant species, the deer mouse (Peromyscus maniculatus). Unexpectedly, heteromyid abundance exhibited an initial positive relationship, reached a threshold, and then exhibited a negative relationship, a phenomenon driven by Ord's kangaroo rats (Dipodomys ordii), the most numerically dominant species. We speculate this non-linear finding was caused by a combination of trophic and nontrophic pathways. Our findings provide new insight as to the potential for differential effects of cheatgrass on rodents in arid portions of the western United States. We suggest that future investigations on cheatgrass, and plant invader effects in general, consider parsing animal communities of interest by various taxonomic and/or ecological groupings rather than focusing exclusively on individual species or entire communities.
英文关键词	Bromus tectorum cheatgrass Cricetidae habitat Heteromyidae non-native vegetation small mammal
类型	Article
语种	英语
国家	USA
开放获取类型	gold, Green Published
收录类别	SCI-E
WOS记录号	WOS:000456857400008
WOS关键词	GREAT-BASIN DESERT ; ECOSYSTEM SERVICES ; SMALL MAMMALS ; POPULATION-DYNAMICS ; IMPACTS ; VEGETATION ; DIVERSITY ; COMMUNITY ; WILDLIFE ; CHEATGRASS
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/2XILL650/215294
作者单位	1.Wildlife Serv, USDA, Natl Wildlife Res Ctr, Florida Field Stn, Gainesville, FL 32641 USA; 2.Utah State Univ, Dept Wildland Resources, Logan, UT 84322 USA; 3.Utah State Univ, Dept Wildland Resources, USDA, Wildlife Serv,Natl Wildlife Res Ctr, Logan, UT 84322 USA
推荐引用方式 GB/T 7714	Kluever, Bryan M.,Smith, Trinity N.,Gese, Eric M.. Group effects of a non-native plant invasion on rodent abundance[J],2019,10(1).
APA	Kluever, Bryan M.,Smith, Trinity N.,&Gese, Eric M..(2019).Group effects of a non-native plant invasion on rodent abundance.ECOSPHERE,10(1).
MLA	Kluever, Bryan M.,et al."Group effects of a non-native plant invasion on rodent abundance".ECOSPHERE 10.1(2019).