Using structural equation modeling to test established theory and develop novel hypotheses for the structuring forces in soil food webs

doi:10.1016/j.pedobi.2015.06.001

CORC > 植物研究所 > 中国科学院植物研究所 > 植被与环境变化国家重点实验室

	Using structural equation modeling to test established theory and develop novel hypotheses for the structuring forces in soil food webs
	Shao, Yuanhu ; Bao, Weikai 1; Chen, Dima 2; Eisenhauer, Nico 3,4; Zhang, Weixin ; Pang, Xueyong ; Xu, Guoliang 1,5; Fu, Shenglei
刊名	PEDOBIOLOGIA
	2015
卷号	58 期号:4 页码:137-145
关键词	Collembola Mites Nematodes Predator-prey Soil invertebrates
ISSN号	0031-4056
DOI	10.1016/j.pedobi.2015.06.001
文献子类	Article
英文摘要	Understanding the structuring elements of soil food webs is a major challenge for ecologists. Given the complex nature of soil food webs, common treatment-based experiments and bivariate data analyses can only capture part of that complexity. Structural equation model (SEM) is a promising multivariate technique that may help understand direct and indirect relationships in complex soil food webs. As bacterial and fungal energy channels, as well as bottom-up-and top-down forces operate simultaneously, we used SEM to explore the complex interactions among multiple trophic levels in soil food webs. Further, SEM allowed us to test established theory and to refine and derive hypotheses regarding the structuring forces of soil food webs. We studied detritus-based soil food webs in a 55-year-old subtropical Illicium verum forest ecosystem by sampling different important soil food web components, including main soil microbial groups, soil nematodes, and soil microarthropods. The SEM results confirmed established theory by showing the central role of the fungal energy channel, and bottom-up effects were more important for the structure of the food web than top-down forces in the studied subtropical forest soil. In addition, we could derive some novel and refined hypotheses regarding important feeding links in soil food webs. For instance, we provide hypotheses on feeding preferences of different groups of soil biota and on the strength of bottom-up versus top-down effects in forest soil food webs. Overall, we highlight that SEM provides a framework to understand complex interactions and energy pathways in soil food webs in a multivariate context, test established theory, and propose novel experimental tests. (C) 2015 Elsevier GmbH. All rights reserved.
学科主题	Ecology ; Soil Science
电子版国际标准刊号	1873-1511
出版地	MUNICH
WOS关键词	STABLE-ISOTOPE ; PLANT DIVERSITY ; CARBON ; PRODUCTIVITY ; NEMATODES ; PATTERNS ; MICROARTHROPODS ; BIODIVERSITY ; COMMUNITIES ; STABILITY
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
语种	英语
出版者	ELSEVIER GMBH
WOS记录号	WOS:000361256700003
资助机构	Chinese Academy of Sciences [KSCX2-EW-Z-6] ; Natural Science Foundation of China [31.470.559, 31.100.385, 31210103920] ; German Centre for Integrative Biodiversity Research (iDiv) - German Science Foundation [FZT 118]
内容类型	期刊论文
源URL	[http://ir.ibcas.ac.cn/handle/2S10CLM1/25612]
专题	植被与环境变化国家重点实验室
作者单位	1.Chinese Acad Sci, South China Bot Garden, Key Lab Vegetat Restorat & Management Degraded Ec, Guangzhou 510650, Guangdong, Peoples R China 2.Chinese Acad Sci, Chengdu Inst Biol, Key Lab Ecol Restorat, Chengdu 610041, Peoples R China 3.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China 4.German Ctr Integrat Biodivers Res iDiv, D-04103 Leipzig, Germany 5.Univ Leipzig, Inst Biol, D-04103 Leipzig, Germany 6.Guangzhou Univ, Sch Geog Sci, Guangzhou 510006, Guangdong, Peoples R China
推荐引用方式 GB/T 7714	Shao, Yuanhu,Bao, Weikai,Chen, Dima,et al. Using structural equation modeling to test established theory and develop novel hypotheses for the structuring forces in soil food webs[J]. PEDOBIOLOGIA,2015,58(4):137-145.
APA	Shao, Yuanhu.,Bao, Weikai.,Chen, Dima.,Eisenhauer, Nico.,Zhang, Weixin.,...&Fu, Shenglei.(2015).Using structural equation modeling to test established theory and develop novel hypotheses for the structuring forces in soil food webs.PEDOBIOLOGIA,58(4),137-145.
MLA	Shao, Yuanhu,et al."Using structural equation modeling to test established theory and develop novel hypotheses for the structuring forces in soil food webs".PEDOBIOLOGIA 58.4(2015):137-145.