干旱区生态环境知识资源中心(Arid): Shrubs facilitate perennial bunchgrass recruitment in drylands under experimental precipitation change

Arid

DOI	10.1016/j.jaridenv.2020.104432
	Shrubs facilitate perennial bunchgrass recruitment in drylands under experimental precipitation change
	Swanson, Elizabeth K.; Sheley, Roger L.; James, Jeremy J.
通讯作者	Swanson, EK (corresponding author), Oregon State Univ, Dept Forest Ecosyst & Soc, Corvallis, OR 97331 USA.
来源期刊	JOURNAL OF ARID ENVIRONMENTS
ISSN	0140-1963
EISSN	1095-922X
出版年	2021
卷号	187
英文摘要	Increasing extremes in climate related weather events pose a major threat to plant recruitment in drylands. Research has shown facilitation effects by shrubs to improve recruitment in arid regions, however it remains unclear if these effects vary between soil types, early life stages and in both severe precipitation and drought events. We test if shrubs facilitate abundance of both seedlings and juveniles between two soil types in artificial high precipitation, ambient and severe drought conditions. When the effect of shrubs was considered, seedling and juvenile responses were similar between sites. Shrubs increased seedling abundance by 40.9% in drought. In high precipitation, shrubs increased seedling abundance by 20% at one site and juvenile abundance 15% at both sites. These findings support the notion that shrubs can improve recruitment in both severe precipitation and drought years, but the strength of this effect varies with soil. Our results indicate that resource islands generated by shrubs in high precipitation years, may be an important factor driving population dynamics in arid systems as years oscillate between wet and dry.
英文关键词	Arid regions Drought Gradients Population dynamics Precipitation
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000618000500003
WOS关键词	STRESS-GRADIENT HYPOTHESIS ; HYDRAULIC LIFT ; COMPETITION ; PATTERNS ; RESTORATION ; MICROSITE ; INCREASE ; GRASSES ; CANOPY ; GROWTH
WOS类目	Ecology ; Environmental Sciences
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/2XILL650/350678
作者单位	[Swanson, Elizabeth K.] Oregon State Univ, Dept Forest Ecosyst & Soc, Corvallis, OR 97331 USA; [Sheley, Roger L.] USDA ARS, Burns, OR 97720 USA; [James, Jeremy J.] Calif Polytech State Univ San Luis Obispo, Nat Resources Management & Environm Sci Dept, San Luis Obispo, CA 93407 USA
推荐引用方式 GB/T 7714	Swanson, Elizabeth K.,Sheley, Roger L.,James, Jeremy J.. Shrubs facilitate perennial bunchgrass recruitment in drylands under experimental precipitation change[J],2021,187.
APA	Swanson, Elizabeth K.,Sheley, Roger L.,&James, Jeremy J..(2021).Shrubs facilitate perennial bunchgrass recruitment in drylands under experimental precipitation change.JOURNAL OF ARID ENVIRONMENTS,187.
MLA	Swanson, Elizabeth K.,et al."Shrubs facilitate perennial bunchgrass recruitment in drylands under experimental precipitation change".JOURNAL OF ARID ENVIRONMENTS 187(2021).