气候变化领域集成服务门户(CCPortal): Transient population dynamics impede restoration and may promote ecosystem transformation after disturbance

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DOI	10.1111/ele.13291
	Transient population dynamics impede restoration and may promote ecosystem transformation after disturbance
	Shriver R.K.; Andrews C.M.; Arkle R.S.; Barnard D.M.; Duniway M.C.; Germino M.J.; Pilliod D.S.; Pyke D.A.; Welty J.L.; Bradford J.B.
发表日期	2019
ISSN	1461023X
卷号	22 期号:9
英文摘要	The apparent failure of ecosystems to recover from increasingly widespread disturbance is a global concern. Despite growing focus on factors inhibiting resilience and restoration, we still know very little about how demographic and population processes influence recovery. Using inverse and forward demographic modelling of 531 post-fire sagebrush populations across the western US, we show that demographic processes during recovery from seeds do not initially lead to population growth but rather to years of population decline, low density, and risk of extirpation after disturbance and restoration, even at sites with potential to support long-term, stable populations. Changes in population structure, and resulting transient population dynamics, lead to a > 50% decline in population growth rate after disturbance and significant reductions in population density. Our results indicate that demographic processes influence the recovery of ecosystems from disturbance and that demographic analyses can be used by resource managers to anticipate ecological transformation risk. Published 2019. This article is a U.S. Government work and is in the public domain in the USA
英文关键词	big sagebrush; demography; drylands; ecosystem transformation; regime shifts; resilience; restoration; transient population dynamics
语种	英语
scopus关键词	Artemisia tridentata; Artemisia; biological model; ecosystem; fire; growth, development and aging; population density; population dynamics; United States; Artemisia; Ecosystem; Fires; Models, Biological; Population Density; Population Dynamics; United States
来源期刊	Ecology Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/121185
作者单位	U.S. Geological Survey, Southwest Biological Science Center, 2255 N Gemini Rd, Flagstaff, AZ, United States; U.S. Geological Survey, Forest and Rangeland Ecosystem Science Center, 970 S Lusk St, Boise, ID, United States; U.S. Geological Survey, Southwest Biological Science Center, 2290 Resource Blvd, Moab, UT, United States; U.S. Geological Survey, Forest and Rangeland Ecosystem Science Center, 3200 SW Jefferson Way, Corvallis, OR, United States
推荐引用方式 GB/T 7714	Shriver R.K.,Andrews C.M.,Arkle R.S.,et al. Transient population dynamics impede restoration and may promote ecosystem transformation after disturbance[J],2019,22(9).
APA	Shriver R.K..,Andrews C.M..,Arkle R.S..,Barnard D.M..,Duniway M.C..,...&Bradford J.B..(2019).Transient population dynamics impede restoration and may promote ecosystem transformation after disturbance.Ecology Letters,22(9).
MLA	Shriver R.K.,et al."Transient population dynamics impede restoration and may promote ecosystem transformation after disturbance".Ecology Letters 22.9(2019).