干旱区生态环境知识资源中心(Arid): Life history response of Echinops gmelinii Turcz. to variation in the rainfall pattern in a temperate desert

Arid

DOI	10.7717/peerj.8159
	Life history response of Echinops gmelinii Turcz. to variation in the rainfall pattern in a temperate desert
	Wang, Yanli 1,2; Li, Xinrong1 ; Liu, Lichao 1; Zhao, Jiecai 1; Sun, Jingyao 1,2
通讯作者	Li, Xinrong
来源期刊	PEERJ
ISSN	2167-8359
出版年	2019
卷号	7
英文摘要	Background. Current and future changes in rainfall amount and frequency may particularly impact annual plants in desert ecosystems. The winter annual Echinops gmelinii Turcz. is widely distributed in the desert habitats of northern China and is a dominant pioneer annual plant following sand stabilization in the Tengger Desert. This species plays a vital role in dune stabilization during spring and early summer, when wind erosion is the most severe and frequent. However, seedling emergence and regeneration in sandy soil are mainly determined by rainfall patterns. Therefore, understanding the life history response of this species to rainfall variation is necessary for understanding the change of population dynamics under the future climate change. Methods. A field simulation rainfall pot experiment using rainout shelter was conducted that included five amounts and five frequencies of rainfall based on historical and predicted values to monitor the life history responses of E. gmelinii in a near-natural habitat. Results. We found that rainfall amount and frequency significantly affected seedling survival, growth and reproduction. The plant height, biomass, capitula number, seed number, seed mass and reproductive effort, but not the root/shoot ratio, significantly increased with increasing rainfall. Further, these traits exhibited the greatest response to low-frequency and larger rainfall events, especially the optimal rainfall frequency of 10-day intervals. Offspring seed germination showed increasing trends with decreasing rainfall, suggesting that the maternal effects may have occurred. Conclusions. Our study shows that the plasticity in growth and reproduction of E. gmelinii in response to rainfall variations may help it to gain dominance in the harsh and unpredictable desert environment. Furthermore, population development of this winter annual species should be promoted under the likely future scenarios of large rainfall events and increasing cool-season precipitation in temperate desert.
英文关键词	Climate change Rainfall pattern Echinops gmelinii Turcz. Winter annual Life history Temperate desert
类型	Article
语种	英语
国家	Peoples R China
开放获取类型	Green Published, gold
收录类别	SCI-E
WOS记录号	WOS:000499696500008
WOS关键词	PHENOTYPIC PLASTICITY ; CLIMATE-CHANGE ; MEDITERRANEAN POPULATIONS ; SEEDLING EMERGENCE ; PLANTS ; GERMINATION ; GROWTH ; STRATEGIES ; VARIABILITY ; ALLOCATION
WOS类目	Multidisciplinary Sciences
WOS研究方向	Science & Technology - Other Topics
EI主题词	2019-11-29
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/311014
作者单位	1.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Shapotou Desert Res & Expt Stn, Lanzhou, Gansu, Peoples R China; 2.Univ Chinese Acad Sci, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Wang, Yanli,Li, Xinrong,Liu, Lichao,et al. Life history response of Echinops gmelinii Turcz. to variation in the rainfall pattern in a temperate desert[J],2019,7.
APA	Wang, Yanli,Li, Xinrong,Liu, Lichao,Zhao, Jiecai,&Sun, Jingyao.(2019).Life history response of Echinops gmelinii Turcz. to variation in the rainfall pattern in a temperate desert.PEERJ,7.
MLA	Wang, Yanli,et al."Life history response of Echinops gmelinii Turcz. to variation in the rainfall pattern in a temperate desert".PEERJ 7(2019).