中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Variation in trophic cascade strength is triggered by top-down process in an ant-wasp-fig system

文献类型:期刊论文

作者Wang, Bo; Segar, Simon T.; Deng, Gui-Zhong; Luo, Tian-Xun; Lin, Hua; Peng, Yan-Qiong
刊名OIKOS
出版日期2019
卷号128期号:2页码:185-195
ISSN号0030-1299
关键词Predator-prey Interactions Multivariate Analyses Temporal Variation Community Dynamics Ecology Climate Models Vary
DOI10.1111/oik.05653
英文摘要

Changes in the strength of trophic cascades over time have been associated with dramatic shifts in community structure and function. However, the pattern, process, and potential underlying mechanism of temporal variation in trophic cascades remains relatively unexplored. A top-down trophic cascade has been documented for the effects of predacious weaver ants Oecophylla smaragdina on the success of fig tree Ficus racemosa seed production. Ants cause high mortality of non-pollinating fig wasps Sycophaga mayri that parasitize fruits, leading to greater success for the pollinating fig wasp-fig tree mutualists. Here, using a design in which pairs of branches were selected on a tree, and ants were excluded from one of each pair, we quantified the magnitude of the trophic cascade in the cool-dry, hot-dry and rainy (hot-wet) seasons in Xishuangbanna, southwest China. We also recorded the daily behavioral dynamics of ants and fig wasps in different seasons and analyzed the correlation between behavioral, activity and trophic cascade strength. We found that the strength of the trophic cascade was strong in the hot-dry season, diminished in the rainy season and disappeared in the cool-dry season in this system. The strength of species interactions between ants and non-pollinating fig wasps, is positively correlated with trophic cascade strength, indicating that trophic cascade strength is determined by a top-down process when the community is well established. Moreover, because pollinating fig wasps, Ceratosolen fusciceps, play a central role in the establishment of fig wasp communities, when C. fusciceps wasps are absent, the community quickly disassembles as is the case in the cool-dry season. In summary, the strength of the trophic cascade is triggered by top-down processes, however, the occurrence of the trophic cascade is determined by a keystone species that plays a central role in assembly of the community.

学科主题Environmental Sciences & Ecology
语种英语
WOS记录号WOS:000457469800004
源URL[http://ir.xtbg.org.cn/handle/353005/11232]  
专题西双版纳热带植物园_2012年后新成立研究组
西双版纳热带植物园_协同进化组
作者单位1.[Wang, Bo
2.Deng, Gui-Zhong
3.Lin, Hua
4.Chinese Acad Sci, Xishuangbanna Trop Bot Garden, CAS Key Lab Trop Forest Ecol, CN-666303 Menglun, Peoples R China
5.[Segar, Simon T.] CAS, Biol Ctr, Dept Ecol, Inst Entomol, Ceske Budejovice, Czech Republic
6.[Segar, Simon T.] Czech Acad Sci, Inst Entomol, Biol Ctr, Ceske Budejovice, Czech Republic
7.Chinese Acad Sci, Kunming Inst Zool, State Key Lab Genet Resources & Evolut, Kunming, Yunnan, Peoples R China
推荐引用方式
GB/T 7714
Wang, Bo,Segar, Simon T.,Deng, Gui-Zhong,et al. Variation in trophic cascade strength is triggered by top-down process in an ant-wasp-fig system[J]. OIKOS,2019,128(2):185-195.
APA Wang, Bo,Segar, Simon T.,Deng, Gui-Zhong,Luo, Tian-Xun,Lin, Hua,&Peng, Yan-Qiong.(2019).Variation in trophic cascade strength is triggered by top-down process in an ant-wasp-fig system.OIKOS,128(2),185-195.
MLA Wang, Bo,et al."Variation in trophic cascade strength is triggered by top-down process in an ant-wasp-fig system".OIKOS 128.2(2019):185-195.

入库方式: OAI收割

来源:西双版纳热带植物园

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