Knowledge Resource Center for Ecological Environment in Arid Area
| 项目编号 | 9810674 |
| SGER: El Nino Rains as a Germination Cue for Desert Annuals | |
| Philip Rundel | |
| 主持机构 | University of California-Los Angeles |
| 开始日期 | 1998-04-01 |
| 结束日期 | 1999-03-31 |
| 资助经费 | 18000(USD) |
| 项目类别 | Standard Grant |
| 资助机构 | US-NSF（美国国家科学基金会） |
| 项目所属计划 | POP & COMMUNITY ECOL PROG |
| 语种 | 英语 |
| 国家 | 美国 |
| 英文简介 | 9810674 Rundel Desert annuals have been an important group for study by many ecologists, including population biologists modeling strategies of life history adaptations. Such models have generally assumed a bet-hedging strategy in desert annuals in which not all seeds germinate when good growing conditions occur following fall and winter rains. There are limited data suggesting that desert annuals have dormancy mechanisms that allow a conservative strategy in which subsets of seed pools germinate over a series of years. The close phylogenetic relationship between a number of desert annuals and post-fire chaparral annuals, which have a predictive germination strategy cured by chemical signals, suggests that predictive germination strategies may also be present among desert annuals. This project will be investigating the effect of environmental chemical cues for germination in a number of desert annuals from the winter-rainfall Mojave and Colorado Deserts in California. El Ni o conditions in 1997-1998 are providing unusual conditions which have produced abundant germination and seed set of both common and rare desert annuals. |
| 来源学科分类 | Biological Sciences |
| URL | https://www.nsf.gov/awardsearch/showAward?AWD_ID=9810674 |
| 资源类型 | 项目 |
| 条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/341134 |
| 推荐引用方式 GB/T 7714 | Philip Rundel.SGER: El Nino Rains as a Germination Cue for Desert Annuals.1998. |
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