Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1658/1100-9233(2002)013[0575:LTDOWA]2.0.CO;2 |
Long-term dynamics of winter and summer annual communities in the Chihuahuan Desert | |
Guo, QF; Brown, JH; Valone, TJ | |
通讯作者 | Guo, QF |
来源期刊 | JOURNAL OF VEGETATION SCIENCE
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ISSN | 1100-9233 |
出版年 | 2002 |
卷号 | 13期号:4页码:575-584 |
英文摘要 | Winter and summer annuals in the Chihuahuan Desert have been intensively studied in recent years but little is known about the similarities and differences in the dynamics between these two communities. Using 15 yr of census data from permanent quadrats, this paper compared the characteristics and temporal dynamics of these two distinct, spatially co-existent but temporally segregated communities. Although the total number of summer annual species recorded during our 15 yr of observation was higher than winter annuals, the mean number of species observed each year was higher in the winter community. The winter community exhibited lower temporal variation in total plant abundance and populations of individual species, lower species turnover rate and higher evenness than the summer community. The rank abundances of species in winter were significantly positively correlated for a period of up to 7 yr while in Summer significant positive correlations in rank abundance disappeared after 2 to 3 yr. The higher seasonal species diversity (i.e. number of species observed in each season) in winter rather than the overall special pool (over 15 yr) may be responsible for the greater community stability of winter annuals. The difference in long-term community dynamics between the two communities of annual plants are likely due to the differences in total species pool, life history traits (e.g. seed size), and seasonal climatic regimes. |
英文关键词 | climate life history seed size species pool |
类型 | Article |
语种 | 英语 |
国家 | USA |
收录类别 | SCI-E |
WOS记录号 | WOS:000178961700013 |
WOS关键词 | SPECIES-DIVERSITY ; PLANT-COMMUNITIES ; STABILITY ; BIODIVERSITY ; ECOSYSTEM ; ABUNDANCE ; PATTERNS ; ENVIRONMENTS ; VARIABILITY ; GRANIVORY |
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/2XILL650/143314 |
作者单位 | (1)Univ New Mexico, Dept Biol, Albuquerque, NM 87131 USA;(2)St Louis Univ, Dept Biol, St Louis, MO 63103 USA;(3)Calif State Univ Northridge, Dept Biol, Northridge, CA 91330 USA |
推荐引用方式 GB/T 7714 | Guo, QF,Brown, JH,Valone, TJ. Long-term dynamics of winter and summer annual communities in the Chihuahuan Desert[J]. United States Geological Survey,2002,13(4):575-584. |
APA | Guo, QF,Brown, JH,&Valone, TJ.(2002).Long-term dynamics of winter and summer annual communities in the Chihuahuan Desert.JOURNAL OF VEGETATION SCIENCE,13(4),575-584. |
MLA | Guo, QF,et al."Long-term dynamics of winter and summer annual communities in the Chihuahuan Desert".JOURNAL OF VEGETATION SCIENCE 13.4(2002):575-584. |
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