干旱区生态环境知识资源中心(Arid): Invasive buffel grass (Cenchrus ciliaris) increases water stress and reduces success of native perennial seedlings in southeastern Arizona

Arid

DOI	10.1007/s10530-022-02750-5
	Invasive buffel grass (Cenchrus ciliaris) increases water stress and reduces success of native perennial seedlings in southeastern Arizona
	Sommers, Pacifica; Davis, Ashley; Chesson, Peter
通讯作者	Sommers, P (corresponding author)，Univ Colorado, Ecol & Evolutionary Biol, Boulder, CO 80309 USA.
来源期刊	BIOLOGICAL INVASIONS
ISSN	1387-3547
EISSN	1573-1464
出版年	2022-02
英文摘要	Although buffel grass (Cenchrus ciliaris) invasions on several continents have significant ecological impacts, little information is available on its stage-specific interactions with native vegetation. In areas of North America's Sonoran Desert highly impacted by buffel grass, perennial plants are particularly vulnerable during the recruitment stage. We studied the impact of buffel grass on the emergence and early survival of native perennials that germinate during monsoon season with a field experiment. We used a pot experiment to test whether proximity to buffel grass induced water stress in the seedlings of a locally dominant native tree, the foothills palo verde (Parkinsonia microphylla). Seedlings of native perennials emerged at nearly twice the rate, and survived longer, on field plots where mature buffel grass was removed, or had never invaded, than where buffel grass remained. The stable isotope signatures of carbon in palo verde seedlings grown in pots with buffel grass indicated higher stomatal closure consistent with greater water stress than in seedlings grown alone. A stage-structured model based on palo verde population dynamics illustrates that if only recruitment rates were affected by buffel grass, palo verde would likely remain on the landscape, though at reduced densities. However, the long-lived nature of perennials implies we have yet to observe the full impacts of the invasion. The model indicates the kinds of studies needed to fully predict the impact of buffel grass.
英文关键词	Invasion Buffel grass Sonoran Desert Seedling Water stress Stable isotopes
类型	Article ; Early Access
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000760007300001
WOS关键词	PACHYCEREUS-PECTEN-ABORIGINUM ; SONORAN DESERT ECOSYSTEM ; PENNISETUM-CILIARE ; EXOTIC GRASSLANDS ; SPECIES-RICHNESS ; LAND CONVERSION ; SEED BANKS ; REGENERATION ; PLANTS ; SOIL
WOS类目	Biodiversity Conservation ; Ecology
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/377235
作者单位	[Sommers, Pacifica; Davis, Ashley; Chesson, Peter] Univ Arizona, Ecol & Evolutionary Biol, Tucson, AZ USA; [Sommers, Pacifica] Univ Colorado, Ecol & Evolutionary Biol, Boulder, CO 80309 USA; [Davis, Ashley] Arizona State Univ, Sch Life Sci, Tempe, AZ USA; [Chesson, Peter] Natl Chung Hsing Univ, Dept Life Sci, Taichung, Taiwan; [Chesson, Peter] Natl Chung Hsing Univ, Res Ctr Global Change Biol, Taichung, Taiwan
推荐引用方式 GB/T 7714	Sommers, Pacifica,Davis, Ashley,Chesson, Peter. Invasive buffel grass (Cenchrus ciliaris) increases water stress and reduces success of native perennial seedlings in southeastern Arizona[J],2022.
APA	Sommers, Pacifica,Davis, Ashley,&Chesson, Peter.(2022).Invasive buffel grass (Cenchrus ciliaris) increases water stress and reduces success of native perennial seedlings in southeastern Arizona.BIOLOGICAL INVASIONS.
MLA	Sommers, Pacifica,et al."Invasive buffel grass (Cenchrus ciliaris) increases water stress and reduces success of native perennial seedlings in southeastern Arizona".BIOLOGICAL INVASIONS (2022).