气候变化领域集成服务门户(CCPortal): Its all about connections: hubs and invasion in habitat networks

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DOI	10.1111/ele.13192
	Its all about connections: hubs and invasion in habitat networks
	Morel-Journel T.; Assa C.R.; Mailleret L.; Vercken E.
发表日期	2019
ISSN	1461023X
卷号	22 期号:2
英文摘要	During the early stages of invasion, the interaction between the features of the invaded landscape, notably its spatial structure, and the internal dynamics of an introduced population has a crucial impact on establishment and spread. By approximating introduction areas as networks of patches linked by dispersal, we characterised their spatial structure with specific metrics and tested their impact on two essential steps of the invasion process: establishment and spread. By combining simulations with experimental introductions of Trichogramma chilonis (Hymenoptera: Trichogrammatidae) in artificial laboratory microcosms, we demonstrated that spread was hindered by clusters and accelerated by hubs but was also affected by small-population mechanisms prevalent for invasions, such as Allee effects. Establishment was also affected by demographic mechanisms, in interaction with network metrics. These results highlight the importance of considering the demography of invaders as well as the structure of the invaded area to predict the outcome of invasions. © 2018 John Wiley & Sons Ltd/CNRS
英文关键词	Allee effect; connectivity; establishment; hub; individual-based model; invasion; microcosm; network; simulation; spread
语种	英语
scopus关键词	Hymenoptera; Trichogramma chilonis; Trichogrammatidae; animal; biological model; demography; ecosystem; moth; population dynamics; Animals; Demography; Ecosystem; Models, Biological; Moths; Population Dynamics
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/121148
作者单位	Earth and Life Institute, Biodiversity Research Centre, Université Catholique de Louvain, Louvain-la-Neuve, Belgium; Université Côte d'Azur, INRA, CNRS, ISA, Sophia Antipolis, 06900, France; Université Côte d'Azur, Inria, INRA, CNRS, UPMC University, Paris 06, Sophia Antipolis, 06900, France
推荐引用方式 GB/T 7714	Morel-Journel T.,Assa C.R.,Mailleret L.,et al. Its all about connections: hubs and invasion in habitat networks[J],2019,22(2).
APA	Morel-Journel T.,Assa C.R.,Mailleret L.,&Vercken E..(2019).Its all about connections: hubs and invasion in habitat networks.Ecology Letters,22(2).
MLA	Morel-Journel T.,et al."Its all about connections: hubs and invasion in habitat networks".Ecology Letters 22.2(2019).