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Nitrogen addition changes the trophic cascade effects of spiders on a detrital food web
Liu, Shengjie1; Hu, Jing2; Behm, Jocelyn E.; He, Xinxing; Gan, Jianmin1; Yang, Xiaodong1
2018
Source PublicationECOSPHERE
ISSN2150-8925
Volume9Issue:10Pages:-
Abstract

The trophic cascade effects of predators on detrital food webs have crucial impacts on ecosystem functioning. However, due to the complexity of detrital food webs, no consistent pattern of cascading effects has emerged. Furthermore, global changes, such as increased nitrogen (N) deposition, likely have significant impacts on detrital trophic interactions but are not well understood. Here, we evaluate how increased N deposition influences trophic cascades using a simplified detrital food web (spider-Collembola) that has previously exhibited trophic cascades in an experimental context. We tested the impact of N addition on the direct and cascading effects of spiders in detritus food web. We manipulated the abundance of spiders with sit-and-wait or actively hunting foraging strategies in microcosms. Under ambient N conditions (control treatments), we did not detect trophic cascade effects of spiders on litter decomposition. In contrast, N addition enhanced the negative trophic cascade effects of spiders on decomposition by directly reducing Collembola density. Our findings suggest that understanding how increased N deposition affects trophic interactions and ecosystem functioning is important for predicting the impact of global change on soil ecosystems.

KeywordTropical Forest Floor Litter Decomposition Ecosystem Function Building Spider Soil Collembola Deposition Alters Biodiversity
Subject AreaEnvironmental Sciences & Ecology
DOI10.1002/ecs2.2466
Indexed BySCI
Language英语
WOS IDWOS:000449566200010
Citation statistics
Document Type期刊论文
Identifierhttp://ir.xtbg.org.cn/handle/353005/11161
Collection其他
Affiliation1.Chinese Acad Sci, CAS Key Lab Trop Forest Ecol, Xishuangbanna Trop Bot Garden, Mengla 666303, Yunnan, Peoples R China
2.Chinese Ecosyst Res Net, Ailaoshan Stn Subtrop Forest Ecosyst Studies, Jingdong 676200, Yunnan, Peoples R China
3.Environm Protect Agcy Hohhot, Hohhot 010011, Inner Mongolia, Peoples R China
4.Behm, Jocelyn E.] Temple Univ, Dept Biol, Ctr Biodivers, Philadelphia, PA 19122 USA
Recommended Citation
GB/T 7714
Liu, Shengjie,Hu, Jing,Behm, Jocelyn E.,et al. Nitrogen addition changes the trophic cascade effects of spiders on a detrital food web[J]. ECOSPHERE,2018,9(10):-.
APA Liu, Shengjie,Hu, Jing,Behm, Jocelyn E.,He, Xinxing,Gan, Jianmin,&Yang, Xiaodong.(2018).Nitrogen addition changes the trophic cascade effects of spiders on a detrital food web.ECOSPHERE,9(10),-.
MLA Liu, Shengjie,et al."Nitrogen addition changes the trophic cascade effects of spiders on a detrital food web".ECOSPHERE 9.10(2018):-.
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