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Change in dominance determines herbivore effects on plant biodiversity

文献类型：期刊论文

作者Koerner, Sally E.79; Smith, Melinda D.77,78; Burkepile, Deron E.76; Hanan, Niall P.74,75; Avolio, Meghan L.73; Collins, Scott L.72; Knapp, Alan K.77,78; Lemoine, Nathan P.77,78; Forrestel, Elisabeth J.71; Eby, Stephanie70
刊名NATURE ECOLOGY & EVOLUTION
出版日期2018-12-01
卷号2期号:12页码:1925-1932
ISSN号2397-334X
DOI10.1038/s41559-018-0696-y
英文摘要Herbivores alter plant biodiversity (species richness) in many of the world's ecosystems, but the magnitude and the direction of herbivore effects on biodiversity vary widely within and among ecosystems. One current theory predicts that herbivores enhance plant biodiversity at high productivity but have the opposite effect at low productivity. Yet, empirical support for the importance of site productivity as a mediator of these herbivore impacts is equivocal. Here, we synthesize data from 252 large-herbivore exclusion studies, spanning a 20-fold range in site productivity, to test an alternative hypothesis-that herbivore-induced changes in the competitive environment determine the response of plant biodiversity to herbivory irrespective of productivity. Under this hypothesis, when herbivores reduce the abundance (biomass, cover) of dominant species (for example, because the dominant plant is palatable), additional resources become available to support new species, thereby increasing biodiversity. By contrast, if herbivores promote high dominance by increasing the abundance of herbivory-resistant, unpalatable species, then resource availability for other species decreases reducing biodiversity. We show that herbivore-induced change in dominance, independent of site productivity or precipitation (a proxy for productivity), is the best predictor of herbivore effects on biodiversity in grassland and savannah sites. Given that most herbaceous ecosystems are dominated by one or a few species, altering the competitive environment via herbivores or by other means may be an effective strategy for conserving biodiversity in grasslands and savannahs globally.
WOS关键词DIVERSITY DEPENDS ; RESOURCE CONTROL ; COMMUNITIES ; PRODUCTIVITY ; VEGETATION ; RICHNESS ; CONSUMER ; ECOLOGY ; IMPACT
资助项目USDA AFRI Foundational Conference Grant[2018-67013-27400] ; Kenya Long-term Exclosure Experiment-NFS[DEB 12-56004] ; Jornada-NSF[DEB-0618210] ; Konza Prairie and Kruger National Park-NSF[DEB 0841917] ; Kruger National Park-NSF[DEB 1712786]
WOS研究方向Environmental Sciences & Ecology ; Evolutionary Biology
语种英语
出版者NATURE PUBLISHING GROUP
WOS记录号WOS:000450904100020
源URL[http://ir.igsnrr.ac.cn/handle/311030/51444]  
专题拉萨站高原生态系统研究中心_外文论文
作者单位1.Univ Republica, Fac Agron, Montevideo, Uruguay
2.UNS, CERZOS, CONICET, Bahia Blanca, Buenos Aires, Argentina
3.UCSB Kenneth S Norris Rancho Marino Reserve, Cambria, CA USA
4.Univ Wyoming, Dept Bot, Laramie, WY 82071 USA
5.Botswana Univ Agr & Nat Resources, Dept Anim Sci & Prod, Gaborone, Botswana
6.POB 943, Laporte, CO USA
7.Chinese Acad Agr Sci, Natl Hulunber Grassland Ecosyst Observat & Res St, Inst Agr Resources & Reg Planning, Beijing, Peoples R China
8.Mpala Res Ctr, Nanyuki, Kenya
9.Univ Calif Davis, Dept Plant Sci, Davis, CA 95616 USA
10.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modelling, Lhasa Natl Ecol Res Stn, Beijing, Peoples R China
推荐引用方式
GB/T 7714		 Koerner, Sally E.,Smith, Melinda D.,Burkepile, Deron E.,et al. Change in dominance determines herbivore effects on plant biodiversity[J]. NATURE ECOLOGY & EVOLUTION,2018,2(12):1925-1932.
APA Koerner, Sally E..,Smith, Melinda D..,Burkepile, Deron E..,Hanan, Niall P..,Avolio, Meghan L..,...&Zelikova, Tamara Jane.(2018).Change in dominance determines herbivore effects on plant biodiversity.NATURE ECOLOGY & EVOLUTION,2(12),1925-1932.
MLA Koerner, Sally E.,et al."Change in dominance determines herbivore effects on plant biodiversity".NATURE ECOLOGY & EVOLUTION 2.12(2018):1925-1932.

入库方式： OAI收割

来源：地理科学与资源研究所

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