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Global signal of top-down control of terrestrial plant communities by herbivores

文献类型：期刊论文

作者Jia, Shihong1,2; Wang, Xugao1; Yuan, Zuoqiang1; Lin, Fei1; Ye, Ji1; Hao, Zhanqing1; Luskin, Matthew Scott3,4
刊名PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
出版日期2018-06-12
卷号115期号:24页码:6237-6242
关键词Meta-analysis Species Diversity Density-dependent Predation Experimental Animal Exclusion Ecological Cascades
ISSN号0027-8424
DOI10.1073/pnas.1707984115
英文摘要The theory of "top-down" ecological regulation predicts that herbivory suppresses plant abundance, biomass, and survival but increases diversity through the disproportionate consumption of dominant species, which inhibits competitive exclusion. To date, these outcomes have been clear in aquatic ecosystems but not on land. We explicate this discrepancy using a meta-analysis of experimental results from 123 native animal exclusions in natural terrestrial ecosystems (623 pairwise comparisons). Consistent with top-down predictions, we found that herbivores significantly reduced plant abundance, biomass, survival, and reproduction (all P < 0.01) and increased species evenness but not richness (P = 0.06 and P = 0.59, respectively). However, when examining patterns in the strength of top-down effects, with few exceptions, we were unable to detect significantly different effect sizes among biomes, based on local site characteristics (climate or productivity) or study characteristics (study duration or exclosure size). The positive effects on diversity were only significant in studies excluding large animals or located in temperate grasslands. The results demonstrate that top-down regulation by herbivores is a pervasive process shaping terrestrial plant communities at the global scale, but its strength is highly site specific and not predicted by basic site conditions. We suggest that including herbivore densities as a covariate in future exclosure studies will facilitate the discovery of unresolved macroecology trends in the strength of herbivore-plant interactions.
WOS研究方向Science & Technology - Other Topics
语种英语
WOS记录号WOS:000434933400052
出版者NATL ACAD SCIENCES
源URL[http://210.72.129.5/handle/321005/106592]  
专题沈阳应用生态研究所_沈阳应用生态研究所_期刊论文
通讯作者Wang, Xugao; Luskin, Matthew Scott
作者单位1.Chinese Acad Sci, Inst Appl Ecol, Key Lab Forest Ecol & Management, Shenyang 110016, Liaoning, Peoples R China
2.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China
3.Smithsonian Trop Res Inst, Smithsonian Inst Global Earth Observ, Ctr Trop Forest Sci, Washington, DC 20012 USA
4.Nanyang Technol Univ, Asian Sch Environm, Singapore 639798, Singapore
推荐引用方式
GB/T 7714		 Jia, Shihong,Wang, Xugao,Yuan, Zuoqiang,et al. Global signal of top-down control of terrestrial plant communities by herbivores[J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,2018,115(24):6237-6242.
APA Jia, Shihong.,Wang, Xugao.,Yuan, Zuoqiang.,Lin, Fei.,Ye, Ji.,...&Luskin, Matthew Scott.(2018).Global signal of top-down control of terrestrial plant communities by herbivores.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,115(24),6237-6242.
MLA Jia, Shihong,et al."Global signal of top-down control of terrestrial plant communities by herbivores".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 115.24(2018):6237-6242.

入库方式： OAI收割

来源：沈阳应用生态研究所

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