Knowledge Resource Center for Ecological Environment in Arid Area
| 项目编号 | 9224130 |
| Dissertation Research: Water Economy of Desert Birds | |
| [unavailable] | |
| 主持机构 | Arizona State University |
| 开始日期 | 1993-03-01 |
| 结束日期 | 1996-02-29 |
| 资助经费 | 14657(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 | PHYSIOLOG & STRUCTURAL SYS |
| 语种 | 英语 |
| 国家 | 美国 |
| 英文简介 | The general problems presented by terrestrial environments are carried to extremes by subtropical deserts, which are notable for their high temperatures and their capacity to desiccate organisms. Traditional views suggest that small insectivorous birds encounter little difficulty in maintaining water balance because of the high fractional hydration of their prey. There is remarkably little direct evidence to support this view; water balance in small insectivorous birds exposed to environmental conditions normally prevailing in subtropical deserts is essentially unknown. Recent analyses, however, suggest that even under cool conditions, small birds may show either a water deficit or barely balance their water budgets over the daily cycle. This research focuses on (a) the physiological and ecological bases of the suppression of vital activities by a very small, diurnal bird, the Verdin, during the hottest portions of the summer day in the Sonoran Desert, and (b) dissecting the physiological foundation for occupancy of this most extreme terrestrial habitat by developing a complete water budget for animals exposed to ecologically realistic conditions. This project will examine Verdin daily activity patterns, microclimate selection, avenues and rates of water intake and loss, field metabolic rates, patterns of resource utilization and resource availability and abundance. |
| 来源学科分类 | Biological Sciences |
| URL | https://www.nsf.gov/awardsearch/showAward?AWD_ID=9224130 |
| 资源类型 | 项目 |
| 条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/341036 |
| 推荐引用方式 GB/T 7714 | [unavailable].Dissertation Research: Water Economy of Desert Birds.1993. |
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