气候变化领域集成服务门户(CCPortal): Tree diversity effects on leaf insect damage on pedunculate oak: The role of landscape context and forest stratum

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DOI	10.1016/j.foreco.2018.11.014
	Tree diversity effects on leaf insect damage on pedunculate oak: The role of landscape context and forest stratum
	Castagneyrol B.; Giffard B.; Valdés-Correcher E.; Hampe A.
发表日期	2019
ISSN	0378-1127
起始页码	287
结束页码	294
卷号	433
英文摘要	Tree diversity has long been recognized as a major driver of insect herbivory in forest ecosystems. However, predicting the strength and direction of tree diversity effects in real-world situations has proven elusive. One likely reason is that most studies have focused on within-stand dynamics and insufficiently captured other ecological drivers of insect herbivory that can act at broader (i.e., landscape) and finer (i.e., individual trees) scales. We measured herbivory as leaf area consumed by insect herbivores in pedunculate oaks (Quercus robur) growing in mixed and pure forest stands in southwestern France. We assessed the effects of oak spatial isolation within the landscape, tree stand diversity, forest canopy stratification as well as the influence of leaf traits on insect herbivory. Insect herbivory increased with stand isolation regardless of tree diversity. Diversity effects were contingent upon the canopy stratum as insect herbivory in mixed stands exceeded that of pure stands only in the upper stratum. Leaf traits varied between pure and mixed stands and among canopy strata. Insect herbivory was negatively correlated with LDMC and positively with SLA. However, the observed effects of tree diversity, canopy stratum and stand isolation on insect herbivory were only partially driven by variability in oak leaf traits. Our findings illustrate that, in real-world contexts, insect herbivory can be driven by a complex interplay of multiple, scale-dependent drivers. They help step forward towards a more profound understanding of the complex forces drive insect herbivory in managed forest ecosystems. © 2018 Elsevier B.V.
英文关键词	Biodiversity; Forest; Forest stratification; Host plant concentration; Leaf insect herbivory; Leaf traits; Quercus robur
语种	英语
scopus关键词	Biodiversity; Ecosystems; Plants (botany); Forest; Host plants; Insect herbivory; Leaf traits; Quercus robur; Forestry; biodiversity; deciduous tree; forest canopy; forest ecosystem; herbivore; herbivory; host plant; insect; landscape; leaf area; plant-herbivore interaction; stratification; Biodiversity; Ecosystems; Forestry; Insects; Quercus Robur; Trees; France; Hexapoda; Quercus; Quercus robur
来源期刊	Forest Ecology and Management
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/156281
作者单位	BIOGECO, INRA, Univ. Bordeaux, Cestas, 33610, France; UMR 1065, Santé et Agroécologie du Vignoble, Bordeaux Sciences Agro, INRA, ISVV, Gradignan, 33175, France
推荐引用方式 GB/T 7714	Castagneyrol B.,Giffard B.,Valdés-Correcher E.,et al. Tree diversity effects on leaf insect damage on pedunculate oak: The role of landscape context and forest stratum[J],2019,433.
APA	Castagneyrol B.,Giffard B.,Valdés-Correcher E.,&Hampe A..(2019).Tree diversity effects on leaf insect damage on pedunculate oak: The role of landscape context and forest stratum.Forest Ecology and Management,433.
MLA	Castagneyrol B.,et al."Tree diversity effects on leaf insect damage on pedunculate oak: The role of landscape context and forest stratum".Forest Ecology and Management 433(2019).