干旱区生态环境知识资源中心(Arid): Recruitment of pioneer trees with physically dormant seeds under climate change: the case of Vachellia pennatula (Fabaceae) in semiarid environments of Mexico

Arid

DOI	10.1007/s10265-022-01383-y
	Recruitment of pioneer trees with physically dormant seeds under climate change: the case of Vachellia pennatula (Fabaceae) in semiarid environments of Mexico
	Sandoval-Martinez, Jesus; Flores-Cano, Jorge A.; Badano, Ernesto, I
通讯作者	Badano, EI (corresponding author)，Inst Potosino Invest Cient & Tecnol, IPICYT Div Ciencias Ambientales, Camino Presa San Jose 2055,Colonia Lomas 4a Secc, San Luis Potosi 78216, San Luis Potosi, Mexico.
来源期刊	JOURNAL OF PLANT RESEARCH
ISSN	0918-9440
EISSN	1618-0860
出版年	2022-02
英文摘要	Most tree species native to arid and semiarid ecosystems produce seeds with physical dormancy, which have impermeable coats that protect them from desiccation and prevent germination when the environmental conditions are unfavorable for seedling establishment. This dormancy mechanism may confer some degree of tolerance to seeds facing warmer and drier conditions, as those expected in several regions of the world because of climate change. Scarification of these seeds (removal of protective coats) is required for stimulating germination and seedling development. However, as scarification exposes seeds to the external environmental conditions, it can promote desiccation and viability loss in the future. To test these hypotheses, we performed field experiments and sowed scarified and unscarified seeds of a pioneer tree native to semiarid ecosystems of Mesoamerica (Vachellia pennatula) under the current climate and simulated climate change conditions. The experiments were conducted at abandoned fields using open-top chambers to increase temperature and rainout shelters to reduce rainfall. We measured microenvironmental conditions within the experimental plots and monitored seedling emergence and survival during a year. Air temperature and rainfall in climate change simulations approached the values expected for the period 2041-2080. Seedling emergence rates under these climatic conditions were lower than under the current climate. Nevertheless, emergence rates in climate change simulations were even lower for scarified than for unscarified seeds, while the converse occurred under the current climate. On the other hand, although survival rates in climate change simulations were lower than under the current climate, no effects of the scarification treatment were found. In this way, our study suggests that climate change will impair the recruitment of pioneer trees in semiarid environments, even if they produce seeds with physical dormancy, but also indicates that these negative effects will be stronger if seeds are scarified.
英文关键词	Open-top chambers Physical dormancy Rainout shelters Seedling emergence Seedling survival
类型	Article ; Early Access
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000762169400001
WOS关键词	NURSE PLANTS ; GERMINATION ; FOREST ; SCARIFICATION ; FACILITATION ; TEMPERATURE ; SEEDLINGS ; SURVIVAL ; GROWTH
WOS类目	Plant Sciences
WOS研究方向	Plant Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/377213
作者单位	[Sandoval-Martinez, Jesus; Badano, Ernesto, I] Inst Potosino Invest Cient & Tecnol, IPICYT Div Ciencias Ambientales, Camino Presa San Jose 2055,Colonia Lomas 4a Secc, San Luis Potosi 78216, San Luis Potosi, Mexico; [Flores-Cano, Jorge A.] Univ Autonoma San Luis Potosi, Fac Agron & Vet, Km 14-5 Carretera San Luis Matehuala, Soledad De Graciano Sanc 78321, Slp, Mexico
推荐引用方式 GB/T 7714	Sandoval-Martinez, Jesus,Flores-Cano, Jorge A.,Badano, Ernesto, I. Recruitment of pioneer trees with physically dormant seeds under climate change: the case of Vachellia pennatula (Fabaceae) in semiarid environments of Mexico[J],2022.
APA	Sandoval-Martinez, Jesus,Flores-Cano, Jorge A.,&Badano, Ernesto, I.(2022).Recruitment of pioneer trees with physically dormant seeds under climate change: the case of Vachellia pennatula (Fabaceae) in semiarid environments of Mexico.JOURNAL OF PLANT RESEARCH.
MLA	Sandoval-Martinez, Jesus,et al."Recruitment of pioneer trees with physically dormant seeds under climate change: the case of Vachellia pennatula (Fabaceae) in semiarid environments of Mexico".JOURNAL OF PLANT RESEARCH (2022).