Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/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
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ISSN | 0140-1963 |
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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