Predatory beetles facilitate plant growth by driving earthworms to lower soil layers
文献类型：期刊论文
| 作者 | Zhao, C ; Griffin, JN ; Wu, XW ; Sun, SC |
| 刊名 | JOURNAL OF ANIMAL ECOLOGY
 |
| 出版日期 | 2013 |
| 卷号 | 82期号:4页码:749-758 |
| 关键词 | alpine meadow beetle behaviour‐mediated indirect interaction detritus earthworm food chain trophic cascade |
| ISSN号 | 0021-8790 |
| 产权排序 | 1 |
| 通讯作者 | Sun, SC |
| 中文摘要 | Theory suggests that predators of soil-improving, plant-facilitating detritivores (e.g. earthworms) should suppress plant growth via a negative tri-trophic cascade, but the empirical evidence is still largely lacking. We tested this prediction in an alpine meadow on the Tibetan Plateau by manipulating predatory beetles (presence/absence) and quantifying (i) direct effects on the density and behaviour of earthworms; and (ii) indirect effects on soil properties and above-ground plant biomass. In the absence of predators, earthworms improved soil properties, but did not significantly affect plant biomass. Surprisingly, the presence of predators strengthened the positive effect of earthworms on soil properties leading to the emergence of a positive indirect effect of predators on plant biomass. We attribute this counterintuitive result to: (i) the inability of predators to suppress overall earthworm density; and (ii) the predator-induced earthworm habitat shift from the upper to lower soil layer that enhanced their soil-modifying, plant-facilitating, effects. Our results reveal that plant-level consequences of predators as transmitted through detritivores can hinge on behaviour-mediated indirect interactions that have the potential to overturn predictions based solely on trophic interactions. This work calls for a closer examination of the effects of predators in detritus food webs and the development of spatially explicit theory capable of predicting the occurrence and consequences of predator-induced detritivore behavioural shifts. |
| 学科主题 | Environmental Sciences & Ecology;Zoology |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000320388700004 |
| 公开日期 | 2014-11-21 |
| 源URL | [http://210.75.237.14/handle/351003/24274]  |
| 专题 | 成都生物研究所_生态研究 |
| 推荐引用方式 GB/T 7714 | Zhao, C,Griffin, JN,Wu, XW,et al. Predatory beetles facilitate plant growth by driving earthworms to lower soil layers[J]. JOURNAL OF ANIMAL ECOLOGY,2013,82(4):749-758. |
| APA | Zhao, C,Griffin, JN,Wu, XW,&Sun, SC.(2013).Predatory beetles facilitate plant growth by driving earthworms to lower soil layers.JOURNAL OF ANIMAL ECOLOGY,82(4),749-758. |
| MLA | Zhao, C,et al."Predatory beetles facilitate plant growth by driving earthworms to lower soil layers".JOURNAL OF ANIMAL ECOLOGY 82.4(2013):749-758. |
入库方式： OAI收割
来源：成都生物研究所
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