干旱区生态环境知识资源中心(Arid): Asynchronous flowering patterns in saguaro cacti (Carnegiea gigantea)

Arid

DOI	10.1002/ecs2.3873
	Asynchronous flowering patterns in saguaro cacti (Carnegiea gigantea)
	Foley, Theresa; Swann, Don E.; Sotelo, Guadalupe; Perkins, Nicholas; Winkler, Daniel E.
通讯作者	Winkler, DE (corresponding author), US Geol Survey, Southwest Biol Sci Ctr, Tucson, AZ 85719 USA.
来源期刊	ECOSPHERE
ISSN	2150-8925
出版年	2021
卷号	12 期号:12
英文摘要	The saguaro cactus (Carnegiea gigantea [Engelm.] Britton & Rose) is a keystone species endemic to the Sonoran Desert of northern Mexico and the southwestern United States. The saguaro produces large white flowers near its stem apex (crown) during April-June, which bloom at night and close the following day. In 1924, Duncan Johnson reported that saguaro floral buds are likely to have an asymmetrical distribution in which buds occur in higher densities on the eastern half of a plant's crown. Using technology not available to Johnson, we tested his observations to determine whether flowers are asymmetrically distributed using repeat photography. We also tested whether there is a seasonal pattern of flowering that may explain Johnson's observations. We tracked intra-individual flowering phenology of 20 saguaros and measured 2372 flowers across two reproductive seasons in Saguaro National Park, Tucson, Arizona. Flowers first appeared on the east side of all saguaro crowns at the start of the reproductive season, and then spread radially in a counterclockwise direction as the season progressed. In contrast to previous reports, saguaro flowers were consistently more abundant on the northern part of the crown than in the eastern part. To our knowledge, this study is the first to document a seasonal, counterclockwise pattern of asynchronous flowering in saguaro or any angiosperm. We discuss potential drivers of this phenomenon as well as implications for saguaros responding to climate change.
英文关键词	Carnegiea gigantea citizen science columnar cactus community science desert plants flower orientation intra-individual flowering phenology phyllotaxis reproductive strategy saguaro Sonoran Desert
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000735437600036
WOS关键词	FLORAL ORIENTATION ; CACTACEAE ; EVOLUTION ; PHENOLOGY ; HELIOTROPISM ; TEMPERATURE ; MORPHOLOGY ; SYNCHRONY
WOS类目	Ecology
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/373919
作者单位	[Foley, Theresa] Sonora Environm Res Inst Inc SERI, POB 65782, Tucson, AZ 85728 USA; [Swann, Don E.; Sotelo, Guadalupe; Perkins, Nicholas] Saguaro Natl Pk, 3693 South Old Spanish Trail, Tucson, AZ 85748 USA; [Winkler, Daniel E.] US Geol Survey, Southwest Biol Sci Ctr, Tucson, AZ 85719 USA
推荐引用方式 GB/T 7714	Foley, Theresa,Swann, Don E.,Sotelo, Guadalupe,et al. Asynchronous flowering patterns in saguaro cacti (Carnegiea gigantea)[J],2021,12(12).
APA	Foley, Theresa,Swann, Don E.,Sotelo, Guadalupe,Perkins, Nicholas,&Winkler, Daniel E..(2021).Asynchronous flowering patterns in saguaro cacti (Carnegiea gigantea).ECOSPHERE,12(12).
MLA	Foley, Theresa,et al."Asynchronous flowering patterns in saguaro cacti (Carnegiea gigantea)".ECOSPHERE 12.12(2021).