Arid
DOI10.1016/j.jaridenv.2010.01.001
Perennial plant mortality in the Sonoran and Mojave deserts in response to severe, multi-year drought
McAuliffe, J. R.1; Hamerlynck, E. P.2
通讯作者McAuliffe, J. R.
来源期刊JOURNAL OF ARID ENVIRONMENTS
ISSN0140-1963
出版年2010
卷号74期号:8页码:885-896
英文摘要

Recent drought caused considerable shrub mortality in parts of the Sonoran and Mojave deserts (USA) The most severe impacts occurred in southern parts of the Mojave Desert and the adjacent Lower Colorado section of the Sonoran Desert in southernmost California and southwestern Arizona In that region, mortality of the small, drought-deciduous shrubs Ambrosia deltoidea and Ambrosia dumosa was 100% or nearly so The larger, drought-enduring evergreen Larrea tridentata fared much better, although nearly two-thirds of all L tridentata plants succumbed at one location Data on 21 additional perennial species showed that other species of small, drought-deciduous shrubs also sustained considerably higher mortality. The best predictor of plant responses was the Standard Precipitation Index (SPI) calculated for a 60-month time frame ending in March 2003, indicating the Importance of the cumulative effect of successive drought years Deficits of cool-season precipitation were more extreme than warm-season deficits and were probably the greatest contributor to plant mortality. Soil conditions, including differences in parent materials and texture, also influenced plant responses Episodes of drought-induced, perennial plant mortality represent extensive, region-wide ecological disturbances and may be one of the most important processes affecting plant populations and community composition in deserts (C) 2010 Elsevier Ltd All rights reserved


英文关键词Ambrosia Disturbance Larrea tridentata Soil SPI Standard precipitation index
类型Article
语种英语
国家USA
收录类别SCI-E
WOS记录号WOS:000278656400001
WOS关键词CERCIDIUM-MICROPHYLLUM ; FOUQUIERIA-SPLENDENS ; ROOT COMMUNICATION ; SHRUBS ; DYNAMICS ; TREE ; PRECIPITATION ; CALIFORNIA ; DIEBACK ; USA
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/2XILL650/164929
作者单位1.Desert Bot Garden, Phoenix, AZ 85008 USA;
2.USDA ARS, SW Watershed Res Ctr, Tucson, AZ 85719 USA
推荐引用方式
GB/T 7714
McAuliffe, J. R.,Hamerlynck, E. P.. Perennial plant mortality in the Sonoran and Mojave deserts in response to severe, multi-year drought[J],2010,74(8):885-896.
APA McAuliffe, J. R.,&Hamerlynck, E. P..(2010).Perennial plant mortality in the Sonoran and Mojave deserts in response to severe, multi-year drought.JOURNAL OF ARID ENVIRONMENTS,74(8),885-896.
MLA McAuliffe, J. R.,et al."Perennial plant mortality in the Sonoran and Mojave deserts in response to severe, multi-year drought".JOURNAL OF ARID ENVIRONMENTS 74.8(2010):885-896.
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