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DOI	10.1038/s41598-019-45400-y
	Hydraulic and photosynthetic responses of big sagebrush to the 2017 total solar eclipse
	Beverly, Daniel P.1,2; Guadagno, Carmela R.1; Bretfeldl, Mario 1; Speckman, Heather N.1,5; Albeke, Shannon E.3,4,5; Ewers, Brent E.1,5
通讯作者	Beverly, Daniel P.
来源期刊	SCIENTIFIC REPORTS
ISSN	2045-2322
出版年	2019
卷号	9
英文摘要	The total solar eclipse of August 21, 2017 created a path of totality similar to 115 km in width across the United States. While eclipse observations have shown distinct responses in animal behavior often emulating nocturnal behavior, the influence of eclipses on plant physiology are less understood. We investigated physiological perturbations due to rapid changes of sunlight and air temperature in big sagebrush (Artemisia tridentata ssp. vaseyana), a desert shrub common within the path of eclipse totality. Leaf gas exchange, water potential, and chlorophyll a fluorescence were monitored during the eclipse and compared to responses obtained the day before in absence of the eclipse. On the day of the eclipse, air temperature decreased by 6.4 degrees C, coupled with a 1.0 kPa drop in vapor pressure deficit having a 9-minute lag following totality. Using chlorophyll a fluorescence measurements, we found photosynthetic efficiency of photosystem II (Fv'/Fm') recovered to near dark acclimated state (i.e., 87%), but the short duration of darkness did not allow for complete recovery. Gas exchange data and a simple light response model were used to estimate a 14% reduction in carbon assimilation for one day over sagebrush dominated areas within the path of totality for the Western United States.
类型	Article
语种	英语
国家	USA
开放获取类型	Green Published, gold
收录类别	SCI-E
WOS记录号	WOS:000472136900013
WOS关键词	WATER-VAPOR EXCHANGE ; CHLOROPHYLL FLUORESCENCE ; STOMATAL CONDUCTANCE ; CIRCADIAN REGULATION ; CARBON-DIOXIDE ; DESERT SHRUB ; LIGHT STRESS ; SAP FLOW ; LEAF ; DROUGHT
WOS类目	Multidisciplinary Sciences
WOS研究方向	Science & Technology - Other Topics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/218793
作者单位	1.Univ Wyoming, Dept Bot, Laramie, WY 82071 USA; 2.Univ Wyoming, Water Resources Environm Sci & Engn, Laramie, WY 82071 USA; 3.Univ Wyoming, Dept Geog, Laramie, WY 82071 USA; 4.Univ Wyoming, Wyoming Geog Informat Serv Ctr, Laramie, WY 82071 USA; 5.Univ Wyoming, Program Ecol, Laramie, WY 82071 USA
推荐引用方式 GB/T 7714	Beverly, Daniel P.,Guadagno, Carmela R.,Bretfeldl, Mario,et al. Hydraulic and photosynthetic responses of big sagebrush to the 2017 total solar eclipse[J],2019,9.
APA	Beverly, Daniel P.,Guadagno, Carmela R.,Bretfeldl, Mario,Speckman, Heather N.,Albeke, Shannon E.,&Ewers, Brent E..(2019).Hydraulic and photosynthetic responses of big sagebrush to the 2017 total solar eclipse.SCIENTIFIC REPORTS,9.
MLA	Beverly, Daniel P.,et al."Hydraulic and photosynthetic responses of big sagebrush to the 2017 total solar eclipse".SCIENTIFIC REPORTS 9(2019).