Scopus记录号: 2-s2.0-85058143823
论文题名: Its all about connections: hubs and invasion in habitat networks
作者: Morel-Journel T. ; Assa C.R. ; Mailleret L. ; Vercken E.
刊名: Ecology Letters
ISSN: 1461023X
出版年: 2019
卷: 22, 期: 2 起始页码: 313
结束页码: 321
语种: 英语
英文关键词: Allee effect
; connectivity
; establishment
; hub
; individual-based model
; invasion
; microcosm
; network
; simulation
; spread
Scopus关键词: Hymenoptera
; Trichogramma chilonis
; Trichogrammatidae
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 资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/122743
Appears in Collections: 气候变化事实与影响
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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
Recommended Citation:
Morel-Journel T.,Assa C.R.,Mailleret L.,et al. Its all about connections: hubs and invasion in habitat networks[J]. Ecology Letters,2019-01-01,22(2)