干旱区生态环境知识资源中心(Arid): Understanding the limits to species-wide demographic generalizations: the ecology and management of Parkinsonia aculeata

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DOI	10.1002/ecs2.2746
	Understanding the limits to species-wide demographic generalizations: the ecology and management of Parkinsonia aculeata
	Pichancourt, J-B 1,2; van Klinken, R. D.1; Raghu, S.1
通讯作者	Raghu, S.
来源期刊	ECOSPHERE
ISSN	2150-8925
出版年	2019
卷号	10 期号:5
英文摘要	The search for generalizations in the face of complex species-environment interactions is particularly important for minimizing the cost of managing populations of species. We tested whether we could generalize, at various nested scales, the species-level demography of the widely invasive plant species Parkinsonia aculeata (Fabaceae) and whether these generalizations were representative of the demography observed locally. Full demographic surveys at all life stages of the species were conducted in 23 Australian sites during seven years (from 2000 to 2007), across a 1000-km climatic gradient. Sites were nested across four climate regions (arid, semi-arid, semi-wet/dry tropics, wet/dry tropics) and three habitat types (upland, wetland, and riparian). We estimated the vital rates (growth/retrogression, survival, fecundity) at all life stages and size classes and combined them to create 99 site-year demographic matrix population models. With these models, we then estimated site-year-specific asymptotic population growth rates and their corresponding prospective elasticity values to perturbation of the vital rates. We then developed a nested retrospective elasticity analysis (nested LTRE) to test whether and how upscaling the results (i.e., from site to habitat, to climate region, and to the invaded range) produced averaging bias, which could lead to spurious interpretations of the relationships between the retrospective elasticity values. The prospective analysis highlighted that site-year variation in the matrix population models, population growth rates, and corresponding elasticities could not be well summarized by a single species-level analysis and that the spread was as diverse as found in previously reported multispecies-level demographic analyses. The nested LTRE analysis showed that upscaling demographic models introduced for most sites new sources of errors in the estimation (in terms of magnitude and sign of retrospective elasticities), which increased drastically as we progressively aggregate the demographic information between nested scales of observation. Our findings suggest that regardless of the scale, demographic generalizations at the species scale are not always useful for managing P. aculeata across sites in its invaded range, given its plasticity in demography.
英文关键词	context-specific management demography invasive species nested life-table response experiment Parkinsonia
类型	Article
语种	英语
国家	Australia ; France
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000474063600031
WOS关键词	POPULATION-DYNAMICS ; BIOLOGICAL-CONTROL ; PLANT DEMOGRAPHY ; MODELS ; GROWTH ; SCALE ; METAANALYSIS ; DISTURBANCE ; PREDICTION ; COMPONENTS
WOS类目	Ecology
WOS研究方向	Environmental Sciences & Ecology
来源机构	Commonwealth Scientific and Industrial Research Organisation
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/215308
作者单位	1.CSIRO, Ecosci Precinct, GPO Box 2583, Brisbane, Qld 4001, Australia; 2.Univ Lorraine, INRA, Agroparistech, UMR SILVA 1434, F-54000 Nancy, France
推荐引用方式 GB/T 7714	Pichancourt, J-B,van Klinken, R. D.,Raghu, S.. Understanding the limits to species-wide demographic generalizations: the ecology and management of Parkinsonia aculeata[J]. Commonwealth Scientific and Industrial Research Organisation,2019,10(5).
APA	Pichancourt, J-B,van Klinken, R. D.,&Raghu, S..(2019).Understanding the limits to species-wide demographic generalizations: the ecology and management of Parkinsonia aculeata.ECOSPHERE,10(5).
MLA	Pichancourt, J-B,et al."Understanding the limits to species-wide demographic generalizations: the ecology and management of Parkinsonia aculeata".ECOSPHERE 10.5(2019).