Knowledge Resource Center for Ecological Environment in Arid Area
| 项目编号 | 9527111 |
| Cross-Site: Within- and Across-site Variation in Ant Community Structure and Ecosystem Functions at Three Semiarid LTER Sites | |
| John Wiens | |
| 主持机构 | Colorado State University |
| 开始日期 | 1995-10-01 |
| 结束日期 | 1999-09-30 |
| 资助经费 | 209809(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 | LONG TERM ECOLOGICAL RESEARCH |
| 语种 | 英语 |
| 国家 | 美国 |
| 英文简介 | This research will employ cross-site and within-site comparisons using three LTER sites to extend and enrich our knowledge of biodiversity and its dynamics at these sites and establish a baseline for understanding the long-term dynamics of a critical and sensitive component of these ecosystems. To answer this question they will document how species and communities of ground-dwelling ants respond to local and regional gradients in vegetation and land-use between the Central Plains site (Colorado shortgrass steppe), the Sevilleta site (transitional between grassland and Chihuahuan Desert), and the Jornada site (Chihuahuan Desert). The work focuses on ground-dwelling ants because they are easily sampled and observed, are abundant and diverse, are characterized by strong behavioral and competitive interactions, are sensitive to both small-scale and large-scale environmental variations, and may play a major role in the movement of materials in arid and semiarid ecosystems. The sites represent a gradient in temperature, precipitation, vegetation, and biogeography. Within each site, ant communities and functional roles will be compared in grass-dominated and shrub- dominated vegetation and in locations differing in grazing intensity. Observations at nest sites of foraging individuals and of removal of seeds and mealworms from food stations will be used to document how the relative magnitude of material flow generated by ants of different functional groups differs among habitats within a site and how these differences are affected by factors operating at the regional scale. |
| 来源学科分类 | Biological Sciences |
| URL | https://www.nsf.gov/awardsearch/showAward?AWD_ID=9527111 |
| 资源类型 | 项目 |
| 条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/341094 |
| 推荐引用方式 GB/T 7714 | John Wiens.Cross-Site: Within- and Across-site Variation in Ant Community Structure and Ecosystem Functions at Three Semiarid LTER Sites.1995. |
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