气候变化领域集成服务门户(CCPortal): Native insect herbivory overwhelms context dependence to limit complex invasion dynamics of exotic weeds

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DOI	10.1111/ele.12833
	Native insect herbivory overwhelms context dependence to limit complex invasion dynamics of exotic weeds
	Schultz E.L.; Eckberg J.O.; Berg S.S.; Louda S.M.; Miller T.E.X.
发表日期	2017
ISSN	1461-023X
EISSN	1461-0248
卷号	20 期号:11
英文摘要	Understanding the role of consumers in density-dependent plant population dynamics is a long-standing goal in ecology. However, the generality of herbivory effects across heterogeneous landscapes is poorly understood due to the pervasive influence of context-dependence. We tested effects of native insect herbivory on the population dynamics of an exotic thistle, Cirsium vulgare, in a field experiment replicated across eight sites in eastern Nebraska. Using hierarchical Bayesian analysis and density-dependent population models, we found potential for explosive low-density population growth (λ > 5) and complex density fluctuations under herbivore exclusion. However, herbivore access drove population decline (λ < 1), suppressing complex fluctuations. While plant–herbivore interaction outcomes are famously context-dependent, we demonstrated that herbivores suppress potentially invasive populations throughout our study region, and this qualitative outcome is insensitive to environmental context. Our novel use of Bayesian demographic modelling shows that native insect herbivores consistently prevent hard-to-predict fluctuations of weeds in environments otherwise susceptible to invasion. © 2017 John Wiley & Sons Ltd/CNRS
英文关键词	Cirsium vulgare; demography; density-dependence; environmental context; hierarchical Bayesian model; insect herbivory; integral projection models; invasive species; population dynamics
学科领域	Cirsium; Cirsium vulgare; Hexapoda; animal; Bayes theorem; Cirsium; growth, development and aging; herbivory; insect; introduced species; physiology; population dynamics; population growth; Animals; Bayes Theorem; Cirsium; Herbivory; Insecta; Introduced Species; Population Dynamics; Population Growth
语种	英语
scopus关键词	Cirsium; Cirsium vulgare; Hexapoda; animal; Bayes theorem; Cirsium; growth, development and aging; herbivory; insect; introduced species; physiology; population dynamics; population growth; Animals; Bayes Theorem; Cirsium; Herbivory; Insecta; Introduced Species; Population Dynamics; Population Growth
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/118315
作者单位	Program in Ecology and Evolutionary Biology, Department of BioSciences, Rice University, Houston, TX 77005, United States; School of Biological Sciences, University of Nebraska, Lincoln, NE 68588, United States; Department of Computer and Information Sciences, University of St. Thomas, Saint Paul, MN 55105, United States; Xerces Society for Invertebrate Conservation, Portland, OR 97232, United States
推荐引用方式 GB/T 7714	Schultz E.L.,Eckberg J.O.,Berg S.S.,et al. Native insect herbivory overwhelms context dependence to limit complex invasion dynamics of exotic weeds[J],2017,20(11).
APA	Schultz E.L.,Eckberg J.O.,Berg S.S.,Louda S.M.,&Miller T.E.X..(2017).Native insect herbivory overwhelms context dependence to limit complex invasion dynamics of exotic weeds.Ecology Letters,20(11).
MLA	Schultz E.L.,et al."Native insect herbivory overwhelms context dependence to limit complex invasion dynamics of exotic weeds".Ecology Letters 20.11(2017).