globalchange  > 过去全球变化的重建
DOI: 10.1371/journal.pone.0169741
论文题名:
Reading the Leaves’ Palm: Leaf Traits and Herbivory along the Microclimatic Gradient of Forest Layers
作者: Stephanie Stiegel; Martin H. Entling; Jasmin Mantilla-Contreras
刊名: PLOS ONE
ISSN: 1932-6203
出版年: 2017
发表日期: 2017-1-18
卷: 12, 期:1
语种: 英语
英文关键词: Leaves ; Herbivory ; Forests ; Trees ; Insects ; Chlorophyll ; Plant defenses ; Humidity
英文摘要: Microclimate in different positions on a host plant has strong direct effects on herbivores. But little is known about indirect effects due to changes of leaf traits. We hypothesized that herbivory increases from upper canopy to lower canopy and understory due to a combination of direct and indirect pathways. Furthermore, we hypothesized that herbivory in the understory differs between tree species in accordance with their leaf traits. We investigated herbivory by leaf chewing insects along the vertical gradient of mixed deciduous forest stands on the broad-leaved tree species Fagus sylvatica L. (European beech) with study sites located along a 140 km long transect. Additionally, we studied juvenile Acer pseudoplatanus L. (sycamore maple) and Carpinus betulus L. (hornbeam) individuals within the understory as a reference of leaf traits in the same microclimate. Lowest levels of herbivory were observed in upper canopies, where temperatures were highest. Temperature was the best predictor for insect herbivory across forest layers in our study. However, the direction was opposite to the generally known positive relationship. Herbivory also varied between the three tree species with lowest levels for F. sylvatica. Leaf carbon content was highest for F. sylvatica and probably indicates higher amounts of phenolic defense compounds. We conclude that the effect of temperature must have been indirect, whereby the expected higher herbivory was suppressed due to unfavorable leaf traits (lower nitrogen content, higher toughness and carbon content) of upper canopy leaves compared to the understory.
URL: http://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0169741&type=printable
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/26011
Appears in Collections:过去全球变化的重建
影响、适应和脆弱性
科学计划与规划
气候变化与战略
全球变化的国际研究计划
气候减缓与适应
气候变化事实与影响

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作者单位: University of Hildesheim, Institute of Biology and Chemistry, Ecology and Environmental Education Group, Hildesheim, Germany;University of Koblenz-Landau, Department of Ecosystem Analysis, Landau, Germany;University of Hildesheim, Institute of Biology and Chemistry, Ecology and Environmental Education Group, Hildesheim, Germany

Recommended Citation:
Stephanie Stiegel,Martin H. Entling,Jasmin Mantilla-Contreras. Reading the Leaves’ Palm: Leaf Traits and Herbivory along the Microclimatic Gradient of Forest Layers[J]. PLOS ONE,2017-01-01,12(1)
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