The effect of pika grazing on Stipa purpurea is amplified by warming but alleviated by increased precipitation in an alpine grassland | |
Wei, HX (Wei, Haixia)1,2; Zhao, JX (Zhao, Jingxue)1; Luo, TX (Luo, Tianxiang)1,3 | |
Source Publication | PLANT ECOLOGY |
2019 | |
Volume | 220Issue:3Pages:371-381 |
DOI | 10.1007/s11258-019-00920-5 |
Abstract | Climate warming may cause alpine grassland degradation by decreasing plant growth and increasing pika grazing, although the concurrent precipitation change may further confound the plant and pika responses to warming. We aim to investigate the interactive effect of changes in temperature, precipitation and pika herbivory on plant growth. A 2-year field manipulation experiment of 2 degrees C warming and 15-30% increased precipitation was conducted in an alpine grassland ecosystem. During the growing season, warming significantly reduced plant height growth of the two dominant species Stipa purpurea and Kobresia macrantha, whereas increased precipitation and its interactions with warming stimulated plant height growth. Regarding the widespread species S. purpurea, warming significantly increased the frequency, consumption, and intensity of pika herbivory, whereas increased precipitation significantly reduced pika herbivory intensity, resulting in a net positive effect of increased precipitation and its interactions with warming and pika herbivory on plant growth. However, the pika grazing on K. macrantha varied little with warming and precipitation change. There was generally a much larger effect of pika grazing on S. Purpurea than on K. macrantha, which corresponded to higher specific leaf area and nitrogen content in S. purpurea than in K. macrantha. The diet selection of pika may explain why the sensitivity of pika herbivory to warming and precipitation change differed between the two dominant plant species. Our data suggest that the effect of pika grazing on Stipa plants is amplified by climatic warming, and such a negative effect could be alleviated by increased precipitation. |
Subject Area | Environmental Sciences |
WOS ID | WOS:000461204000007 |
Language | 英语 |
Indexed By | SCI |
Keyword | Ochotona-curzoniae Tibetan Plateau Meadow Ecosystems Responses Climate Metaanalysis Biomass Biodiversity Herbivores Impacts |
WOS Research Area | Plant Sciences ; Environmental Sciences & Ecology ; Forestry |
WOS Subject | Plant Sciences ; Ecology ; Forestry |
Cooperation Status | 国内 |
ISSN | 1385-0237 |
Department | 环境变化与地表过程 |
URL | 查看原文 |
Publisher | SPRINGER |
Subtype | Article |
Citation statistics | |
Document Type | 期刊论文 |
Identifier | http://ir.itpcas.ac.cn/handle/131C11/9384 |
Collection | 图书馆 |
Corresponding Author | Luo, TX (Luo, Tianxiang) |
Affiliation | 1.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Alpine Ecol, Courtyard 16,Bldg 3,Lincui Rd, Beijing 100101, Peoples R China; 2.Zaozhuang Univ, Coll Tourism & Resource Environm, Zaozhuang 277160, Shandong, Peoples R China; 3.CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China. |
Recommended Citation GB/T 7714 | Wei, HX ,Zhao, JX ,Luo, TX . The effect of pika grazing on Stipa purpurea is amplified by warming but alleviated by increased precipitation in an alpine grassland[J]. PLANT ECOLOGY,2019,220(3):371-381. |
APA | Wei, HX ,Zhao, JX ,&Luo, TX .(2019).The effect of pika grazing on Stipa purpurea is amplified by warming but alleviated by increased precipitation in an alpine grassland.PLANT ECOLOGY,220(3),371-381. |
MLA | Wei, HX ,et al."The effect of pika grazing on Stipa purpurea is amplified by warming but alleviated by increased precipitation in an alpine grassland".PLANT ECOLOGY 220.3(2019):371-381. |
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