气候变化领域集成服务门户(CCPortal): Phenolics of the understory shrub Cotinus coggygria influence Mediterranean oak forests diversity and dynamics

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DOI	10.1016/j.foreco.2019.03.049
	Phenolics of the understory shrub Cotinus coggygria influence Mediterranean oak forests diversity and dynamics
	Gavinet J.; Santonja M.; Baldy V.; Hashoum H.; Peano S.; Tchong T.; Gros R.; Greff S.; Fernandez C.; Bousquet-Mélou A.
发表日期	2019
ISSN	0378-1127
起始页码	262
结束页码	270
卷号	441
英文摘要	Chemical interactions in forested ecosystems play a role in driving biodiversity and ecosystem dynamics. Plant phenolics released by leaching can influence surrounding plants and soil organisms such as bacteria, fungi or arthropods. However, our knowledge about such chemically-mediated biotic interactions in Mediterranean oak forests is still limited, in particular whether they play a role in the limited forest regeneration. In this study, we analyzed how phenolics of Cotinus coggygria, a dominant shrub of Mediterranean downy oak (Quercus pubescens) forests, influence understory herbaceous plant species, downy oak regeneration and soil organisms in order to obtain a more integrative view of possible direct and indirect interactions triggered by this shrub species. We performed a series of experiments testing the effect of aqueous extracts of C. coggygria, mimicking natural leachates, on these organisms. Cotinus coggygria contained a high quantity of phenolics in green and senescent leaves but much less in leaf litter. Extracts from C. coggygria leaves stimulated bacterial communities, exhibited few effects on both saprophytic and symbiotic fungi, and negatively affected Collembola. Herbaceous species growth was particularly impaired by extracts from green and senescent leaves, although these effects were alleviated in the presence of soil microorganisms. In both greenhouse and field experiments, C. coggygria affected early oak seedling establishment in particular through a reduced root growth, but exhibited no effect on later seedling and sapling growth. We discussed the implication of these results for the balance between competition and facilitation in oak forests and concluded that C. coggygria has the potential to strongly alter biotic interactions, understory plant diversity and oak forest dynamics. © 2019
英文关键词	Allelopathy; Biotic interactions; Oak seedlings; Regeneration; Soil mesofauna; Soil microorganisms
语种	英语
scopus关键词	Biodiversity; Dynamics; Ecosystems; Fungi; Greenhouse effect; Reforestation; Soils; Allelopathy; Biotic interactions; Mesofauna; Oak seedlings; Regeneration; Soil micro-organisms; Bacteria; allelopathy; deciduous forest; experimental study; forest dynamics; growth response; herb; Mediterranean environment; phenolic compound; plant extract; regrowth; seedling emergence; shrub; soil biota; species diversity; understory; Biodiversity; Dynamics; Ecosystems; Fungi; Greenhouse Effect; Reforestation; Arthropoda; Bacteria (microorganisms); Collembola; Cotinus coggygria; Fungi; Quercus pubescens
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/156037
作者单位	Aix Marseille Univ, Avignon Université, CNRS, IRD, IMBE, Marseille, France
推荐引用方式 GB/T 7714	Gavinet J.,Santonja M.,Baldy V.,et al. Phenolics of the understory shrub Cotinus coggygria influence Mediterranean oak forests diversity and dynamics[J],2019,441.
APA	Gavinet J..,Santonja M..,Baldy V..,Hashoum H..,Peano S..,...&Bousquet-Mélou A..(2019).Phenolics of the understory shrub Cotinus coggygria influence Mediterranean oak forests diversity and dynamics.Forest Ecology and Management,441.
MLA	Gavinet J.,et al."Phenolics of the understory shrub Cotinus coggygria influence Mediterranean oak forests diversity and dynamics".Forest Ecology and Management 441(2019).