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A trade-off between primary and secondary seed dispersal by wind

文献类型：期刊论文

作者Zhu, Jinlei1; Liu, Minghu2; Xin, Zhiming2; Liu, Zhimin3; Schurr, Frank M.1
刊名PLANT ECOLOGY
出版日期2019-05-01
卷号220期号:4-5页码:541-552
关键词Anemochory Diaspore Dispersal evolution Experimental ecology Functional traits Plant dispersal
ISSN号1385-0237
DOI10.1007/s11258-019-00934-z
英文摘要The seeds of most plant species are dispersed by multiple mechanisms. Whether functional traits mediate positive correlations or negative correlations (trade-offs) between different dispersal mechanisms has important consequences for ecological and evolutionary dynamics. We investigate how traits affect wind-driven seed dispersal through the air and across the ground (primary and secondary wind dispersal, respectively). We hypothesized that primary and secondary wind dispersal were positively correlated because they should both decrease with the wing loading of seeds. We test this hypothesis with wind-tunnel experiments using different seed morphologies of Zygophyllum xanthoxylon (heterocarpous) and Calligonum species. We measured primary dispersal distance at varying wind speeds and release heights, and quantified secondary dispersal potential as the threshold wind speed for seed movement on four ground surfaces. Contrary to our expectation, we found a context-dependent trade-off between primary and secondary wind dispersal. The smoother the ground surface, the stronger this trade-off becomes. The trade-off results from a positive relationship between wing loading and the ratio of vertical to horizontal seed projection (v/h-ratio): an increasing v/h-ratio not only promotes secondary dispersal on smooth surfaces by increasing wind interception of seeds, but also decreases primary dispersal distance by increasing wing loading and terminal velocity of seeds. The trade-off contradicts the widespread assumption of a positive correlation between primary and secondary dispersal. A simple classification into poorly and well-dispersed seeds is thus not possible. The trade-off may affect dynamics of succession and the expansion of pioneer vegetation, while potentially slowing down evolutionary responses to selection on seed dispersal.
资助项目National Natural Science Foundation of China (NSFC)[41571270] ; Sino-German (CSC-DAAD) Postdoc Scholarship Program[57165010] ; German Research Foundation (DFG) [DynNiche][SCHU 2259/5-1]
WOS研究方向Plant Sciences ; Environmental Sciences & Ecology ; Forestry
语种英语
WOS记录号WOS:000464898600011
出版者SPRINGER
源URL[http://210.72.129.5/handle/321005/124019]  
专题中国科学院沈阳应用生态研究所
通讯作者Zhu, Jinlei
作者单位1.Univ Hohenheim, Inst Landscape & Plant Ecol, D-70599 Stuttgart, Germany
2.Chinese Acad Forestry, Expt Ctr Desert Forestry, Dengkou 015200, Peoples R China
3.Chinese Acad Sci, Inst Appl Ecol, Shenyang 110016, Liaoning, Peoples R China
推荐引用方式
GB/T 7714		 Zhu, Jinlei,Liu, Minghu,Xin, Zhiming,et al. A trade-off between primary and secondary seed dispersal by wind[J]. PLANT ECOLOGY,2019,220(4-5):541-552.
APA Zhu, Jinlei,Liu, Minghu,Xin, Zhiming,Liu, Zhimin,&Schurr, Frank M..(2019).A trade-off between primary and secondary seed dispersal by wind.PLANT ECOLOGY,220(4-5),541-552.
MLA Zhu, Jinlei,et al."A trade-off between primary and secondary seed dispersal by wind".PLANT ECOLOGY 220.4-5(2019):541-552.

入库方式： OAI收割

来源：沈阳应用生态研究所

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