Arid
DOI10.1023/B:VEGE.0000026026.34760.1b
Temporal and spatial patterns in emergence and early survival of perennial plants in the Sonoran Desert
Bowers, JE; Turner, RM; Burgess, TL
通讯作者Bowers, JE
来源期刊PLANT ECOLOGY
ISSN1385-0237
出版年2004
卷号172期号:1页码:107-119
英文摘要

Seedling emergence and survival of 15 perennial species were studied for six years in a 557-m(2) permanent plot at Tumamoc Hill, Arizona, USA, an ungrazed site in the northern Sonoran Desert. The minimum rain required for germination and emergence ranged from 17.5 to 35.6 mm. Few species emerged in every year of the study. First-year survival averaged across all 15 species was 3.7%; only 0.1% of seedlings lived as long as four years. The odds of survival in the first year improved with increased rain. About three times as many seedlings died from predation as desiccation. In 2-m(2) subplots, mortality of three woody species in the first 30 days after emergence appeared to be independent of seedling density. Short-, moderate-, and long-lived species displayed distinct survival strategies. Long-lived species compensated for generally poor seedling survival by frequent germination and emergence. Moderate-lived species exhibited highly episodic germination and emergence, a potentially risky behavior that might have been offset to some extent by relatively good long-term survival. Short- lived species had the highest seedling survival. Because these species can bloom in their first year, good early survival meant that some individuals were able to reproduce before they died.


英文关键词Morisita’s Index of Dispersion mortality recruitment
类型Article
语种英语
国家USA
收录类别SCI-E
WOS记录号WOS:000221121300010
WOS关键词LARREA-TRIDENTATA ZYGOPHYLLACEAE ; WESTERN UNITED-STATES ; MOJAVE-DESERT ; SEEDLING SURVIVAL ; CERCIDIUM-MICROPHYLLUM ; CLIMATIC VARIABILITY ; VEGETATION CHANGE ; ESTABLISHMENT ; POPULATION ; DISPERSAL
WOS类目Plant Sciences ; Ecology ; Forestry
WOS研究方向Plant Sciences ; Environmental Sciences & Ecology ; Forestry
来源机构United States Geological Survey
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/147877
作者单位(1)US Geol Survey, Tucson, AZ 85745 USA;(2)Columbia Univ, Oracle, AZ USA
推荐引用方式
GB/T 7714
Bowers, JE,Turner, RM,Burgess, TL. Temporal and spatial patterns in emergence and early survival of perennial plants in the Sonoran Desert[J]. United States Geological Survey,2004,172(1):107-119.
APA Bowers, JE,Turner, RM,&Burgess, TL.(2004).Temporal and spatial patterns in emergence and early survival of perennial plants in the Sonoran Desert.PLANT ECOLOGY,172(1),107-119.
MLA Bowers, JE,et al."Temporal and spatial patterns in emergence and early survival of perennial plants in the Sonoran Desert".PLANT ECOLOGY 172.1(2004):107-119.
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