Arid
Removing an invader: evidence for forces reassembling a Chihuahuan Desert ecosystem
Ignace, Danielle D.1; Chesson, Peter2
通讯作者Ignace, Danielle D.
来源期刊ECOLOGY
ISSN0012-9658
EISSN1939-9170
出版年2014
卷号95期号:11页码:3203-3212
英文摘要

Community reassembly is an important concept in community ecology, but in most circumstances cannot be observed and is hypothetical. Reassembly of communities is an observable process that can be examined effectively following species invasions. Our study system in southeastern Arizona has declined in diversity and abundance of native winter annual plants coincident with a sustained irruption of a nonnative invasive Eurasian species, Erodium cicutarium, and a major reassembly of the winter annual plant community. To understand the role of E. cicutarium in the reassembly process, we initiated a multiyear E. cicutarium removal experiment that varied the timing of removal. Species richness was higher as a result of removal, although this effect was variable over time. Surprisingly, the abundance of native species collectively was decreased by E. cicutarium removal. However, previously rare Astragalus nuttallianus appears to be facilitated by E. cicutarium, as demonstrated by higher density and relative abundance in the presence of E. cicutarium, and is now codominant. Excluding A. nuttallianus abundance, the remaining native species are collectively increased by removal of E. cicutarium. Although our results showed strong effects of removal, the timing of removal never significantly affected any plant variables. Our experiment implicates a major role for E. cicutarium in the reassembly of the native plant community. Our work suggests a broadening of perspective on processes structuring annual plant communities in arid regions, and calls for an integrated approach beyond the recent popular focus on the interaction between competition and the physical environment.


英文关键词Astragalus nuttallianus Chihuahuan Desert community reassembly Erodium cicutarium plant invasions winter annuals
类型Article
语种英语
国家USA
收录类别SCI-E
WOS记录号WOS:000345326000020
WOS关键词PLANT-COMMUNITIES ; BIOLOGICAL INVASIONS ; ERODIUM-CICUTARIUM ; SONORAN DESERT ; FACILITATION ; NICHE ; DIVERSITY ; DYNAMICS ; ANNUALS ; ENVIRONMENTS
WOS类目Ecology
WOS研究方向Environmental Sciences & Ecology
来源机构University of Arizona
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/181713
作者单位1.Smith Coll, Northampton, MA 01063 USA;
2.Univ Arizona, Tucson, AZ 85721 USA
推荐引用方式
GB/T 7714
Ignace, Danielle D.,Chesson, Peter. Removing an invader: evidence for forces reassembling a Chihuahuan Desert ecosystem[J]. University of Arizona,2014,95(11):3203-3212.
APA Ignace, Danielle D.,&Chesson, Peter.(2014).Removing an invader: evidence for forces reassembling a Chihuahuan Desert ecosystem.ECOLOGY,95(11),3203-3212.
MLA Ignace, Danielle D.,et al."Removing an invader: evidence for forces reassembling a Chihuahuan Desert ecosystem".ECOLOGY 95.11(2014):3203-3212.
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Ignace, Danielle D.]的文章
[Chesson, Peter]的文章
百度学术
百度学术中相似的文章
[Ignace, Danielle D.]的文章
[Chesson, Peter]的文章
必应学术
必应学术中相似的文章
[Ignace, Danielle D.]的文章
[Chesson, Peter]的文章
相关权益政策
暂无数据
收藏/分享

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。