Scopus记录号: 2-s2.0-85058370920
论文题名: Proximity to canopy mediates changes in the defensive chemistry and herbivore loads of an understory tropical shrub, Piper kelleyi
作者: Glassmire A.E. ; Philbin C. ; Richards L.A. ; Jeffrey C.S. ; Snook J.S. ; Dyer L.A.
刊名: Ecology Letters
ISSN: 1461023X
出版年: 2019
卷: 22, 期: 2 起始页码: 332
结束页码: 341
语种: 英语
英文关键词: Herbivory
; intraspecific phytochemical variation
; light heterogeneity
; phytochemical diversity
; vertical stratification
Scopus关键词: Piperaceae
英文摘要: Phytochemical traits are a key component of plant defense theory. Chemical ecology has been biased towards studying effects of individual metabolites even though effective plant defenses are comprised of diverse mixtures of metabolites. We tested the phytochemical landscape hypothesis, positing that trophic interactions are contingent upon their spatial location across a phytochemically diverse landscape. Specifically, intraspecific phytochemical changes associated with vertical strata in forests were hypothesised to affect herbivore communities of the neotropical shrub Piper kelleyi Tepe (Piperaceae). Using a field experiment, we found that phytochemical diversity increased with canopy height, and higher levels of phytochemical diversity located near the canopy were characterised by tradeoffs between photoactive and non-photoactive biosynthetic pathways. For understory plants closer to the ground, phytochemical diversity increased as direct light transmittance decreased, and these plants were characterised by up to 37% reductions in herbivory. Our results suggest that intraspecific phytochemical diversity structures herbivore communities across the landscape, affecting total herbivory. © 2018 John Wiley & Sons Ltd/CNRS 资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/122740
Appears in Collections: 气候变化事实与影响
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作者单位: Department of Entomology, East Lansing, MI 48824, United States; Chemistry Department, University of Nevada, Reno, Reno, NV 89557, United States; Ecology, Evolution, and Conservation Biology, University of Nevada, Reno, Reno, NV 89557, United States
Recommended Citation:
Glassmire A.E.,Philbin C.,Richards L.A.,et al. Proximity to canopy mediates changes in the defensive chemistry and herbivore loads of an understory tropical shrub, Piper kelleyi[J]. Ecology Letters,2019-01-01,22(2)