期刊
SOIL BIOLOGY & BIOCHEMISTRY
卷 41, 期 6, 页码 1221-1226出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.soilbio.2009.03.002
关键词
Soil animal food web; Stable isotopes; N-15; C-13; Fungi; Ectomycorrhiza; Beech forest; Decomposers; Compartmentalization; Trophic channels
类别
资金
- German Research Foundation (DFG)
- Swiss National Science Foundation (NSF)
The soil animal food web has become a focus of recent ecological research but trophic relationships still remain enigmatic for many taxa, Analysis of stable isotope ratios of N and C provides a powerful tool for disentangling food web structure. In this study, animals, roots, soil and litter material from a temperate deciduous forest were analysed. The combined measurement of delta N-15 and delta C-13 provided insights into the compartmentalization of the soil animal food web. Leaf litter feeders were separated from animals relying mainly on recent belowground carbon resources and from animals feeding on older carbon. The trophic pathway of leaf litter-feeding species appears to be a dead end, presumably because leaf litter feeders (mainly diplopods and oribatid mites) are unavailable to predators due to large size and/or strong sclerotization. Endogeic earthworms that rely on older carbon also appear to exist in predator-free space. The data suggest that the largest trophic compartment constitutes of ectomycorrhizal feeders and their predators. Additionally, there is a smaller trophic compartment consisting of predators likely feeding on enchytraeids and potentially nematodes. (C) 2009 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据