气候变化领域集成服务门户(CCPortal): Keystone mutualism influences forest tree growth at a landscape scale

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DOI	10.1111/ele.13352
	Keystone mutualism influences forest tree growth at a landscape scale
	Clark R.E.; Gutierrez Illan J.; Comerford M.S.; Singer M.S.
发表日期	2019
ISSN	1461023X
卷号	22 期号:10
英文摘要	Interactions between ants and phloem-feeding herbivores are characterised as a keystone mutualism because they restructure arthropod communities and generate trophic cascades. Keystone interactions in terrestrial food webs are hypothesised to depend on herbivore community structure and bottom-up effects on plant growth. Here, we tested this prediction at a landscape scale with a long-term ant-exclusion experiment on hickory saplings in the context of spatial variation in herbivore community structure and habitat quality. We quantified top-down effects of ants, herbivore communities as well as abiotic factors impacting hickory shoot growth. We found that ants influenced shoot growth via strong, context-dependent, compensatory effects, with clear cascading benefits only when phloem-feeders were present and chewing herbivore abundance was high. By contrast, while several landscape variables predicted hickory growth, they did not mediate the strength of cascading effects of ants. These results suggest that ant/sap-feeder mutualisms may regulate forest productivity by mediating effects of multiple herbivore guilds. © 2019 John Wiley & Sons Ltd/CNRS
英文关键词	ant-sap-feeder mutualisms; Ants; caterpillars; ecosystem stability; forest productivity; keystone interactions; keystone species; mutualisms; trophic cascades
语种	英语
scopus关键词	Arthropoda; Carya; Formicidae; animal; ant; forest; growth, development and aging; herbivory; symbiosis; tree; Animals; Ants; Forests; Herbivory; Symbiosis; Trees
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/121039
作者单位	Department of Biology, Wesleyan University, Middletown, CT, United States; Department of Entomology, Washington State University, Pullman, WA, United States; Department of Biosciences, Rice University, Houston, TX, United States
推荐引用方式 GB/T 7714	Clark R.E.,Gutierrez Illan J.,Comerford M.S.,et al. Keystone mutualism influences forest tree growth at a landscape scale[J],2019,22(10).
APA	Clark R.E.,Gutierrez Illan J.,Comerford M.S.,&Singer M.S..(2019).Keystone mutualism influences forest tree growth at a landscape scale.Ecology Letters,22(10).
MLA	Clark R.E.,et al."Keystone mutualism influences forest tree growth at a landscape scale".Ecology Letters 22.10(2019).