干旱区生态环境知识资源中心(Arid): El Nino Southern Oscillation and enhanced arid land vegetation productivity in NW South America

Arid

DOI	10.1016/j.jaridenv.2021.104695
	El Nino Southern Oscillation and enhanced arid land vegetation productivity in NW South America
	Vining, Benjamin R.; Hillman, Aubrey; Contreras, Daniel A.
通讯作者	Vining, BR (corresponding author)，Univ Arkansas, Environm Dynam, 330 Old Main, Fayetteville, AR 72701 USA. ; Vining, BR (corresponding author)，Univ Arkansas, Dept Anthropol, 330 Old Main, Fayetteville, AR 72701 USA.
来源期刊	JOURNAL OF ARID ENVIRONMENTS
ISSN	0140-1963
EISSN	1095-922X
出版年	2022
卷号	198
英文摘要	El Nino Southern Oscillation (ENSO) is a periodic disruption of coupled oceanic-atmospheric conditions in the tropical Pacific, which changes global precipitation regimes. One area strongly affected by positive (el Nin tilde o) phases is the Pacific Coast of South America. The specific effects of ENSO on Andean ecological communities have received little attention, however. We examine vegetation gross primary productivity (GPP) on Peru's north coast arid-lands during a recent (2016-2017) el Nin tilde o, using a time series of Sentinel 2 imagery. By comparing GPP time-series in three agricultural subregions and three endemic desert vegetation communities, we demonstrate that levels of primary productivity in desert regions during ENSO-positive phases meet or exceed thresholds of adjacent agricultural lands. These results, the first that quantify and spatialize changing GPP between ENSO-neutral and ENSO-positive phases for South American arid-land biomes, both outline the scale and distribution of the el Nin tilde o effects on terrestrial ecosystems and highlight the resulting opportunities for human inhabitants. The dramatic changes to endemic vegetation on the normally hyperarid coastal desert of Peru revealed by reconstructed GPP suggest that periodic el Nin tilde o precipitation plays a critical role in arid land ecodynamics by enhancing establishment, green growth, and seedbank development. These findings improve our understanding of ENSO's net effects and highlight the roles of abrupt climate events in the arid land ecology of NW South America.
英文关键词	Remote sensing Sentinel 2 Gross primary productivity Vegetation time series el Nino-Southern oscillation ENSO Terrestrial ecology Desert vegetation biomes NW South America
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000747908400001
WOS关键词	CLIMATE VARIABILITY ; ENSO ; EVENTS ; IMPACT ; PRECIPITATION ; FISHERIES ; DYNAMICS ; PACIFIC ; PERU
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/2XILL650/376933
作者单位	[Vining, Benjamin R.] Univ Arkansas, Environm Dynam, 330 Old Main, Fayetteville, AR 72701 USA; [Vining, Benjamin R.] Univ Arkansas, Dept Anthropol, 330 Old Main, Fayetteville, AR 72701 USA; [Hillman, Aubrey] SUNY Albany, Dept Atmospher & Environm Sci, Albany, NY USA; [Contreras, Daniel A.] Univ Florida, Dept Anthropol, Turlington Hall, Gainesville, FL 32603 USA
推荐引用方式 GB/T 7714	Vining, Benjamin R.,Hillman, Aubrey,Contreras, Daniel A.. El Nino Southern Oscillation and enhanced arid land vegetation productivity in NW South America[J],2022,198.
APA	Vining, Benjamin R.,Hillman, Aubrey,&Contreras, Daniel A..(2022).El Nino Southern Oscillation and enhanced arid land vegetation productivity in NW South America.JOURNAL OF ARID ENVIRONMENTS,198.
MLA	Vining, Benjamin R.,et al."El Nino Southern Oscillation and enhanced arid land vegetation productivity in NW South America".JOURNAL OF ARID ENVIRONMENTS 198(2022).