Knowledge Management System of Kunming Institute of Botany,CAS
| The positive effects of the alpine cushion plant Arenaria polytrichoides on insect dynamics are determined by both physical and biotic factors | |
Chen,Jianguo; Zhang,Yazhou; Zhang,Hongrui; Schoeb,Christian; Wang,Songwei; Chang,Shuai; Sun,Hang
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| 2021 | |
| 发表期刊 | SCIENCE OF THE TOTAL ENVIRONMENT
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| ISSN | 0048-9697 |
| 卷号 | 762页码:143091 |
| 摘要 | Cushion plants' significant role for alpine biodiversity has been demonstrated in particular through their positive effects on plant diversity. However, their effects on higher trophic levels (e.g. insects) remain largely unclear. In this study, by field sampling in the Hengduan Mountains (HDM) in southwestern China, we evaluated the effects of an alpine gynodioecious cushion species, Arenaria polytrichoides (Carophyllaceae), on insect richness, abundance and population dynamics at two different elevations (4427 m vs. 4732 m) separately at two time periods (day vs. night) and in two growing seasons (early vs. late). The results showed that the total insect diversity decreases from low to high elevation sites. Some insect species were exclusively detected within A. polytrichoides cushions, leading to an increase in local insect richness from 7% to 35%. The positive effects of cushions on insect diversity could be attributed to unique biotic properties provided by cushions. Firstly, the effects were determined by the sexual dimorphism of the cushion with hermaphroditic cushions supporting higher insect diversity than female cushions. This could be because hermaphroditic cushions provide more resources, such as nectar and pollen grains, for insects than female cushions. Secondly, the cushions' associated beneficiary plants can also provide extra resources for attracting more insects, but this effect was mediated by the micro-environmental conditions. Finally, the magnitude of cushions' positive effects on insect dynamics were stronger under higher than under lower environmental stress. This study confirmed that facilitation by A. polytrichoides cushions in HDM plays an important role in constructing the alpine insect community and further regulating its dynamics. Moreover, the positive effects of cushions on insect dynamics increase with increasing environmental stress. Therefore, the distribution range of insects would quite possibly be expanded into higher elevation under future climate changes, which will induce new challenges for the local alpine ecosystems. (C) 2020 Elsevier B.V. All rights reserved. |
| 关键词 | Alpine ecosystem Climate change Cushion species Environmental gradient Insect diversity Microclimatic refugia SPECIES-RICHNESS FACILITATION COMMUNITIES DIVERSITY ELEVATION ALTITUDE VEGETATION INCREASE BEETLE SHIFTS |
| DOI | 10.1016/j.scitotenv.2020.143091 |
| WOS记录号 | WOS:000607910300026 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.kib.ac.cn/handle/151853/73296 |
| 专题 | 中国科学院昆明植物研究所 |
| 作者单位 | 1.Chinese Acad Sci, Kunming Inst Bot, Key Lab Plant Divers & Biogeog East Asia, Kunming 650201, Yunnan, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Yunnan Agr Univ, Coll Plant Protect, Kunming, Yunnan, Peoples R China 4.Swiss Fed Inst Technol, Inst Agr Sci, CH-8092 Zurich, Switzerland 5.Yunnan Univ, Sch Life Sci, Kunming, Yunnan, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen,Jianguo,Zhang,Yazhou,Zhang,Hongrui,et al. The positive effects of the alpine cushion plant Arenaria polytrichoides on insect dynamics are determined by both physical and biotic factors[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2021,762:143091. |
| APA | Chen,Jianguo.,Zhang,Yazhou.,Zhang,Hongrui.,Schoeb,Christian.,Wang,Songwei.,...&Sun,Hang.(2021).The positive effects of the alpine cushion plant Arenaria polytrichoides on insect dynamics are determined by both physical and biotic factors.SCIENCE OF THE TOTAL ENVIRONMENT,762,143091. |
| MLA | Chen,Jianguo,et al."The positive effects of the alpine cushion plant Arenaria polytrichoides on insect dynamics are determined by both physical and biotic factors".SCIENCE OF THE TOTAL ENVIRONMENT 762(2021):143091. |
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