| Spider foraging strategy affects trophic cascades under natural and drought conditions | |
Liu, Shengjie; Chen, Jin ; Gan, Wenjin; Schaefer, Douglas; Gan, Jianmin; Yang, Xiaodong
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| 2015 | |
| Source Publication | SCIENTIFIC REPORTS
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| ISSN | 2045-2322 |
| Volume | 5Pages:- |
| Abstract | Spiders can cause trophic cascades affecting litter decomposition rates. However, it remains unclear how spiders with different foraging strategies influence faunal communities, or present cascading effects on decomposition. Furthermore, increased dry periods predicted in future climates will likely have important consequences for trophic interactions in detritus-based food webs. We investigated independent and interactive effects of spider predation and drought on litter decomposition in a tropical forest floor. We manipulated densities of dominant spiders with actively hunting or sit-and-wait foraging strategies in microcosms which mimicked the tropical-forest floor. We found a positive trophic cascade on litter decomposition was triggered by actively hunting spiders under ambient rainfall, but sit-and-wait spiders did not cause this. The drought treatment reversed the effect of actively hunting spiders on litter decomposition. Under drought conditions, we observed negative trophic cascade effects on litter decomposition in all three spider treatments. Thus, reduced rainfall can alter predator-induced indirect effects on lower trophic levels and ecosystem processes, and is an example of how such changes may alter trophic cascades in detritus-based webs of tropical forests. |
| Keyword | Grassland Ecosystem Function Litter Decomposition Forest-floor Functional Diversity Climate-change Soil Biodiversity Collembola Community Alters |
| Subject Area | Science & Technology - Other Topics |
| Language | 英语 |
| Document Type | 期刊论文 |
| Identifier | https://ir.xtbg.ac.cn/handle/353005/9248 |
| Collection | 土壤生态组 动植物关系组 |
| Corresponding Author | Yang, Xiaodong |
| Recommended Citation GB/T 7714 | Liu, Shengjie,Chen, Jin,Gan, Wenjin,et al. Spider foraging strategy affects trophic cascades under natural and drought conditions[J]. SCIENTIFIC REPORTS,2015,5:-. |
| APA | Liu, Shengjie,Chen, Jin,Gan, Wenjin,Schaefer, Douglas,Gan, Jianmin,&Yang, Xiaodong.(2015).Spider foraging strategy affects trophic cascades under natural and drought conditions.SCIENTIFIC REPORTS,5,-. |
| MLA | Liu, Shengjie,et al."Spider foraging strategy affects trophic cascades under natural and drought conditions".SCIENTIFIC REPORTS 5(2015):-. |
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| Spider foraging stra（761KB） | 开放获取 | CC BY-NC-SA | View Download | |||
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