干旱区生态环境知识资源中心(Arid): Biological invasions and climate change amplify each other's effects on dryland degradation

Arid

DOI	10.1111/gcb.15919
	Biological invasions and climate change amplify each other's effects on dryland degradation
	Ravi, Sujith; Law, Darin J.; Caplan, Joshua S.; Barron-Gafford, Greg A.; Dontsova, Katerina M.; Espeleta, Javier F.; Villegas, Juan C.; Okin, Gregory S.; Breshears, David D.; Huxman, Travis E.
通讯作者	Ravi, S (corresponding author), Temple Univ, Dept Earth & Environm Sci, Philadelphia, PA 19122 USA.
来源期刊	GLOBAL CHANGE BIOLOGY
ISSN	1354-1013
EISSN	1365-2486
出版年	2022
英文摘要	Climate models predict that, in the coming decades, many arid regions will experience increasingly hot conditions and will be affected more frequently by drought. These regions are also experiencing rapid vegetation change, notably invasion by exotic grasses. Invasive grasses spread rapidly into native desert ecosystems due, in particular, to interannual variability in precipitation and periodic fires. The resultant destruction of non-fire-adapted native shrub and grass communities and of the inherent soil resource heterogeneity can yield invader-dominated grasslands. Moreover, recurrent droughts are expected to cause widespread physiological stress and mortality of both invasive and native plants, as well as the loss of soil resources. However, the magnitude of these effects may differ between invasive and native grasses, especially under warmer conditions, rendering the trajectory of vegetated communities uncertain. Using the Biosphere 2 facility in the Sonoran Desert, we evaluated the viability of these hypothesized relationships by simulating combinations of drought and elevated temperature (+5 degrees C) and assessing the ecophysiological and mortality responses of both a dominant invasive grass (Pennisetum ciliare or buffelgrass) and a dominant native grass (Heteropogan contortus or tanglehead). While both grasses survived protracted drought at ambient temperatures by inducing dormancy, drought under warmed conditions exceeded the tolerance limits of the native species, resulting in greater and more rapid mortality than exhibited by the invasive. Thus, two major drivers of global environmental change, biological invasion and climate change, can be expected to synergistically accelerate ecosystem degradation unless large-scale interventions are enacted.
英文关键词	biological invasion climate change desertification drought global change invasive grasses
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000708700400001
WOS关键词	BUFFELGRASS PENNISETUM-CILIARE ; SOIL NUTRIENT AVAILABILITY ; SONORAN DESERT ; PHENOTYPIC PLASTICITY ; ELEVATED CO2 ; GRASS ; FIRE ; COMMUNITY ; DROUGHT ; PRODUCTIVITY
WOS类目	Biodiversity Conservation ; Ecology ; Environmental Sciences
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology
来源机构	University of Arizona ; University of California, Los Angeles
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/363460
作者单位	[Ravi, Sujith] Temple Univ, Dept Earth & Environm Sci, Philadelphia, PA 19122 USA; [Law, Darin J.; Breshears, David D.] Univ Arizona, Sch Nat Resources & Environm, Tucson, AZ USA; [Caplan, Joshua S.] Temple Univ, Dept Architecture & Environm Design, Ambler, PA USA; [Barron-Gafford, Greg A.] Univ Arizona, Sch Geog Dev & Environm, Tucson, AZ USA; [Dontsova, Katerina M.] Univ Arizona, Dept Environm Sci, Tucson, AZ USA; [Espeleta, Javier F.] Associated Coll Midwest, Chicago, IL USA; [Villegas, Juan C.] Univ Antioquia, Fac Ingn, Grp Invest Ecol Aplicada, Medellin, Colombia; [Okin, Gregory S.] Univ Calif Los Angeles, Dept Geog, Los Angeles, CA 90024 USA; [Huxman, Travis E.] Univ Calif Irvine, Dept Ecol & Evolutionary Biol, Irvine, CA 92717 USA
推荐引用方式 GB/T 7714	Ravi, Sujith,Law, Darin J.,Caplan, Joshua S.,et al. Biological invasions and climate change amplify each other's effects on dryland degradation[J]. University of Arizona, University of California, Los Angeles,2022.
APA	Ravi, Sujith.,Law, Darin J..,Caplan, Joshua S..,Barron-Gafford, Greg A..,Dontsova, Katerina M..,...&Huxman, Travis E..(2022).Biological invasions and climate change amplify each other's effects on dryland degradation.GLOBAL CHANGE BIOLOGY.
MLA	Ravi, Sujith,et al."Biological invasions and climate change amplify each other's effects on dryland degradation".GLOBAL CHANGE BIOLOGY (2022).