干旱区生态环境知识资源中心(Arid): Persistence of remnant boreal plants in the Chiricahua Mountains, southern Arizona

Arid

DOI	10.1016/j.gecco.2020.e01131
	Persistence of remnant boreal plants in the Chiricahua Mountains, southern Arizona
	Fescenko, Anda; Downer, James A.; Fescenko, Ilja
通讯作者	Fescenko, A
来源期刊	GLOBAL ECOLOGY AND CONSERVATION
ISSN	2351-9894
出版年	2020
卷号	23
英文摘要	Boreal plants growing along the southern edge of their range on isolated mountains in a hot desert matrix live near the extreme of their physiological tolerance. Such plants are considered sensitive to small changes in climate. We coupled field observations (1974, 1993, 2019) about the abundance and vigor of small populations of ten remnant boreal plant species persisting in the uppermost elevations of spruce-fir forests of the Chiricahua Mountains, together with modeling of the species sensitivities to three stress factors associated with climatic change: warming, drought, and forest fire, in order to explore the persistence of frontier boreal plant species during climate change. We hypothesize that populations of these cryophilic plants have declined or become locally extinct during an adverse warming period since 1993, enforced by two large forest fires (1994, 2011). We used plant traits and principal component analysis to evaluate sensitivities of the studied plants to the combined actions of warming, drought, and forest fires. Our model predicted selective sensitivity to warming for two species: Vaccinium myrtillus and Rubus parviflorus. Other cryophilic species could be more sensitive to drought and fire. We surveyed the study area in 2019 and found eight of the ten previously investigated species still occur in the area. Five species occurred in wet canyons at lower elevations, but three species persisted in low vigor at the uppermost elevation, which was highly affected by fires. Neither warming-sensitive species showed signs of decline: populations of R. parviflorus increased in abundance and vigor, while V. myrtillus persists without significant changes since 1993. Despite the recorded increase in temperature in the study area >1 degrees C between years 1975-1993 and 1994-2019, our study did not find direct evidence of warming effects on the observed species. We conclude that severe wildfires and the multi-decadal decrease in precipitation rather than warming are the main limiting factors of remarkable but limited persistence of the remnant boreal species in the Chiricahua Mountains. Our study demonstrates how field observations can be combined with modeling to evaluate species selective responses to different environmental stress factors to make better environmental management decisions, particularly in light of climate change. (c) 2020 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
英文关键词	Climate warming Drought Forest fire Plant traits Remnant boreal plants Warming tolerance
类型	Article
语种	英语
开放获取类型	gold, Green Published, Green Submitted
收录类别	SCI-E
WOS记录号	WOS:000568734400009
WOS关键词	CLIMATE-CHANGE ; SPECIES VULNERABILITY ; ECOLOGICAL RESPONSES ; BIODIVERSITY ; SHIFTS
WOS类目	Biodiversity Conservation ; Ecology
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/326211
作者单位	[Fescenko, Anda] Swiss Fed Inst Forest Snow & Landscape Res WSL, Zurcherstr 111, CH-8903 Birmensdorf, Switzerland; [Fescenko, Anda] Univ Latvia, 19 Rainis Blvd, LV-1586 Riga, Latvia; [Downer, James A.] Univ Calif Cooperat Extens, Ventura, CA 93003 USA; [Fescenko, Ilja] Univ New Mexico, Albuquerque, NM 87131 USA
推荐引用方式 GB/T 7714	Fescenko, Anda,Downer, James A.,Fescenko, Ilja. Persistence of remnant boreal plants in the Chiricahua Mountains, southern Arizona[J],2020,23.
APA	Fescenko, Anda,Downer, James A.,&Fescenko, Ilja.(2020).Persistence of remnant boreal plants in the Chiricahua Mountains, southern Arizona.GLOBAL ECOLOGY AND CONSERVATION,23.
MLA	Fescenko, Anda,et al."Persistence of remnant boreal plants in the Chiricahua Mountains, southern Arizona".GLOBAL ECOLOGY AND CONSERVATION 23(2020).