干旱区生态环境知识资源中心(Arid): Seed germination of a rare gypsum-associated species, Arctomecon californica (Papaveraceae), in the Mojave Desert

Arid

DOI	10.1016/j.jaridenv.2020.104313
	Seed germination of a rare gypsum-associated species, Arctomecon californica (Papaveraceae), in the Mojave Desert
	Pereira, Tiffany J.; Chiquoine, Lindsay P.; Larranaga, Alejandra J.; Abella, Scott R.
通讯作者	Pereira, TJ
来源期刊	JOURNAL OF ARID ENVIRONMENTS
ISSN	0140-1963
EISSN	1095-922X
出版年	2021
卷号	184
英文摘要	Persistence of rare species associated with unique soil habitats is uncertain with commonly accelerating threats such as habitat loss, fragmentation, and rapid environmental change and limited availability of critical life-history information, such as seed dormancy and germination. Exemplifying rare species of unique habitats in arid environments, Arctomecon californica Torr. & Frem. (Las Vegas bearpoppy) is endemic to gypsic- (calcium sulfate dihydrate) and calcic- (calcium carbonate) soil landscapes in the Mojave Desert of southern Nevada and northwestern Arizona, USA. We examined seed dormancy and germination of A. californica using integrated field and laboratory experiments assessing whether (i) field conditioning could enhance laboratory seed germination; (ii) sulfuric acid, as a potential constituent of gypsum soil water, could break dormancy; and (iii) different temperature regimes could affect germination. Our study demonstrates three findings pertaining to A. californica germination: the promotive effect of low temperature exposure, or more specifically single to multiple cold stratification (cold-wet) events; the potential initial enhancing role of sulfuric acid on the cold stratification process, which diminishes with prolonged cold stratification exposure; and the relative ineffectiveness of a one-season field conditioning treatment on A. californica germination, suggesting that longer cold stratification events, within season or over multiple seasons, are required to trigger germination. For land managers, the efficacy of cold stratification as a dormancy break has potential to inform A. californica conservation management within suitable habitat and support restoration applications such as in breaking dormancy before seeding and propagating plants.
英文关键词	Endemic species Rare plants Sulfuric acid Cold stratification Las vegas bearpoppy Conservation
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000579976600013
WOS关键词	PLANT ; BANK ; DYNAMICS
WOS类目	Ecology ; Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
来源机构	Desert Research Institute
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/327926
作者单位	[Pereira, Tiffany J.; Chiquoine, Lindsay P.; Larranaga, Alejandra J.; Abella, Scott R.] Univ Nevada, Sch Life Sci, Las Vegas, NV 89154 USA; [Pereira, Tiffany J.] Desert Res Inst, 755 E Flamingo Rd, Las Vegas, NV 89119 USA
推荐引用方式 GB/T 7714	Pereira, Tiffany J.,Chiquoine, Lindsay P.,Larranaga, Alejandra J.,et al. Seed germination of a rare gypsum-associated species, Arctomecon californica (Papaveraceae), in the Mojave Desert[J]. Desert Research Institute,2021,184.
APA	Pereira, Tiffany J.,Chiquoine, Lindsay P.,Larranaga, Alejandra J.,&Abella, Scott R..(2021).Seed germination of a rare gypsum-associated species, Arctomecon californica (Papaveraceae), in the Mojave Desert.JOURNAL OF ARID ENVIRONMENTS,184.
MLA	Pereira, Tiffany J.,et al."Seed germination of a rare gypsum-associated species, Arctomecon californica (Papaveraceae), in the Mojave Desert".JOURNAL OF ARID ENVIRONMENTS 184(2021).