干旱区生态环境知识资源中心(Arid): Tracking the desert's edge with a Pleistocene relict

Arid

DOI	10.1016/j.jaridenv.2021.104653
	Tracking the desert's edge with a Pleistocene relict
	Wilder, Benjamin T.; Becker, Amanda T.; Munguia-Vega, Adrian; Culver, Melanie
通讯作者	Wilder, BT (corresponding author), Univ Arizona, Desert Lab Tumamoc Hill, Tucson, AZ 85745 USA.
来源期刊	JOURNAL OF ARID ENVIRONMENTS
ISSN	0140-1963
EISSN	1095-922X
出版年	2022
卷号	196
英文摘要	In addition to the Sky Islands of the southwestern U.S. and northwestern Mexico, a series of 900-1200 m desert peaks surrounded by arid lowlands support temperate affiliated species at their summits. The presence of disjunct long-lived plant taxa on under-explored desert mountains, especially Isla Tibur ' on at 29 degrees latitude in the Gulf of California, suggests a more southerly extent of Ice Age woodlands than previously understood. The phylogeography of the desert edge species Canotia holacantha (Celastraceae) was investigated to test the hypothesis that insular desert peak populations represent remnants of Pleistocene woodlands rather than recent dispersal events. Sequences of four chloroplast DNA regions totaling 2032 bp were amplified from 74 individuals of 14 populations across the entire range of C. holacantha as well as nine individuals that represented the other two species in its clade (C. wendtii and Acanthothamnus aphyllus) and two outgroups. Results suggest that a Canotia common ancestor occurred on the landscape, which underwent a population contraction ca. 15 kya. The Isla Tibur ' on C. holacantha population and the Chihuahuan Desert microendemic C. wendtii have the greatest genetic differentiation, are sister to one another, and basal to all other Canotia populations. Three haplotypes within C. holacantha were recovered, which correspond to regional geography and thus identified as the Arizona, Sonora, and Tibur ' on haplotypes, within which Acanthothamnus aphyllus is nested rather than as a sister genus. These results indicate a once broad distribution of Canotia/Acanthothamnus when the current peripheral desert ecotone habitat was more widespread during the Pleistocene, now present in relict populations on the fringes of the southern desert, in the Chihuahuan Desert, with scattered populations on desert peaks, and a common or abundant distribution at the northern boundary of the Sonoran Desert. These results suggest Canotia has tracked the shift of the desert's edge both in latitude and elevation since the end of the last Ice Age.
英文关键词	Climate refugia Canotia holacantha Phylogeography Chloroplast Paleoecology Sonoran Desert
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000713010400006
WOS关键词	CLIMATE-CHANGE ; PHYLOGEOGRAPHY ; VEGETATION ; PATTERNS ; SEQUENCE ; PRIMERS ; MIDDENS
WOS类目	Ecology ; Environmental Sciences
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/2XILL650/374448
作者单位	[Wilder, Benjamin T.; Munguia-Vega, Adrian] Univ Arizona, Desert Lab Tumamoc Hill, Tucson, AZ 85745 USA; [Becker, Amanda T.] Univ Arizona, Dept Ecol & Evolutionary Biol, Tucson, AZ 85721 USA; [Munguia-Vega, Adrian] Appl Genom Lab, La Paz, Baja California, Mexico; [Culver, Melanie] US Geol Survey, Arizona Cooperat Fish & Wildlife Res Unit, Tucson, AZ USA; [Culver, Melanie] Univ Arizona, Sch Nat Resources & Environm, Tucson, AZ 85745 USA
推荐引用方式 GB/T 7714	Wilder, Benjamin T.,Becker, Amanda T.,Munguia-Vega, Adrian,et al. Tracking the desert's edge with a Pleistocene relict[J],2022,196.
APA	Wilder, Benjamin T.,Becker, Amanda T.,Munguia-Vega, Adrian,&Culver, Melanie.(2022).Tracking the desert's edge with a Pleistocene relict.JOURNAL OF ARID ENVIRONMENTS,196.
MLA	Wilder, Benjamin T.,et al."Tracking the desert's edge with a Pleistocene relict".JOURNAL OF ARID ENVIRONMENTS 196(2022).