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, B; Segar, ST; Deng, GZ; Luo, TX; Lin, H; Peng, YQ |
| 刊名 | OIKOS
 |
| 出版日期 | 2019 |
| 卷号 | 128期号:2页码:185-195 |
| ISSN号 | 0030-1299 |
| 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. |
| 语种 | 英语 |
| 源URL | [http://ir.kiz.ac.cn:8080/handle/152453/12466]  |
| 专题 | 昆明动物研究所_实验与理论生态学 |
| 推荐引用方式 GB/T 7714 | Wang, B,Segar, ST,Deng, GZ,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, B,Segar, ST,Deng, GZ,Luo, TX,Lin, H,&Peng, YQ.(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, B,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：昆明动物研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。