Aerial and soil seed banks enable populations of an annual species to cope with an unpredictable dune ecosystem

doi:10.1093/aob/mcu104

	Aerial and soil seed banks enable populations of an annual species to cope with an unpredictable dune ecosystem
	Gao, Ruiru 1; Yang, Xuejun ; Yang, Fan 1; Wei, Lingling ; Huang, Zhenying; Walck, Jeffrey L.
	2014
发表期刊	ANNALS OF BOTANY
ISSN	0305-7364
卷号	114 期号:2 页码:279-287
摘要	Background and Aims Simultaneous formation of aerial and soil seed banks by a species provides a mechanism for population maintenance in unpredictable environments. Eolian activity greatly affects growth and regeneration of plants in a sand dune system, but we know little about the difference in the contributions of these two seed banks to population dynamics in sand dunes. Methods Seed release, germination, seedling emergence and survival of a desert annual, Agriophyllum squarrosum (Chenopodiaceae), inhabiting the Ordos Sandland in China, were determined in order to explore the different functions of the aerial and soil seed banks. Key Results The size of the aerial seed bank was higher than that of the soil seed bank throughout the growing season. Seed release was positively related to wind velocity. Compared with the soil seed bank, seed germination from the aerial seed bank was lower at low temperature (5/15 degrees C night/day) but higher in the light. Seedling emergence from the soil seed bank was earlier than that from the aerial seed bank. Early-emerged (15 April-15 May) seedlings died due to frost, but seedlings that emerged during the following months survived to reproduce successfully. Conclusions The timing of seed release and different germination behaviour resulted in a temporal heterogeneity of seedling emergence and establishment between the two seed banks. The study suggests that a bet-hedging strategy for the two seed banks enables A. squarrosum populations to cope successfully with the unpredictable desert environment.
关键词	Aerial seed bank soil seed bank Agriophyllum squarrosum Chenopodiaceae seed germination seedling establishment fitness sand dune ecology
学科领域	Plant Sciences
DOI	10.1093/aob/mcu104
收录类别	SCI
语种	英语
WOS关键词	ECOLOGICAL SIGNIFICANCE ; SEROTINOUS PLANTS ; SAND DUNES ; GERMINATION ; DESERT ; STORAGE ; DISPERSAL ; RELEASE ; CLIMATE ; CHINA
WOS研究方向	Plant Sciences
WOS记录号	WOS:000340434200008
出版者	OXFORD UNIV PRESS
文献子类	Article
出版地	OXFORD
EISSN	1095-8290
资助机构	Key Basic Research and Development Plan of China [2010CB951304] ; National Key Technology RD Program [2012BAD16B03] ; National Natural Science Foundation [31370705]
作者邮箱	zhenying@ibcas.ac.cn
作品OA属性	Green Published, Bronze
引用统计	被引频次：21[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ibcas.ac.cn/handle/2S10CLM1/27156
专题	植被与环境变化国家重点实验室
作者单位	1.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Walck, Jeffrey L.] Middle Tennessee State Univ, Dept Biol, Evolut & Ecol Grp, Murfreesboro, TN 37132 USA
推荐引用方式 GB/T 7714	Gao, Ruiru,Yang, Xuejun,Yang, Fan,et al. Aerial and soil seed banks enable populations of an annual species to cope with an unpredictable dune ecosystem[J]. ANNALS OF BOTANY,2014,114(2):279-287.
APA	Gao, Ruiru,Yang, Xuejun,Yang, Fan,Wei, Lingling,Huang, Zhenying,&Walck, Jeffrey L..(2014).Aerial and soil seed banks enable populations of an annual species to cope with an unpredictable dune ecosystem.ANNALS OF BOTANY,114(2),279-287.
MLA	Gao, Ruiru,et al."Aerial and soil seed banks enable populations of an annual species to cope with an unpredictable dune ecosystem".ANNALS OF BOTANY 114.2(2014):279-287.

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