Knowledge Resource Center for Ecological Environment in Arid Area
| 项目编号 | 1632706 |
| EAGER: Demographic models of interior western U. S. tree distributions - climate in the context of competition, disturbance, and natural enemies | |
| Margaret Evans | |
| 主持机构 | University of Arizona |
| 开始日期 | 2016-07-01 |
| 结束日期 | 2020-06-30 |
| 资助经费 | 149996(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 | While a century of ecological research has greatly refined our understanding of the factors influencing the distributions of species on the landscape, we have yet to understand their relative roles. This problem has become increasingly urgent in an era of global change, particularly climate change. This project will evaluate the importance of some of the fundamental factors thought to govern tree species distributions and how their importance varies across geographic and environmental gradients. Four dominant and widespread tree species of interior western US forests will be studied. Population modeling will be used to integrate the many factors influencing individual tree growth, survival, and regeneration to capture the forces determining the full life cycle. This project will contribute to developing the scientific workforce and to better management of public lands through the training of a postdoctoral scholar, outreach to K-12 students and teachers, and collaboration with US Forest Service land managers. This project will advance the field of population and community ecology by applying a well-established set of tools and ideas from population ecology (demography, perturbation analysis) at a new scale, to better understand the forces shaping geographic ranges within a niche framework. The objectives are to evaluate 1) the importance of fundamental factors thought to govern species distributions: climate, competition, disturbance, and their interactions; and 2) how their importance varies across geographic and environmental distributions. The analysis will be focused on Pinus edulis, P. contorta, P. ponderosa, and Pseudotsuga menziesii, which span a range of competition-stress-ruderal strategies. Regressions of three key vital rates will be combined to form integral projection models using range-wide data on marked individuals in ~70,000 Forest Inventory and Analysis (FIA) plots across the eight states of the contiguous western US. |
| 来源学科分类 | Biological Sciences |
| URL | https://www.nsf.gov/awardsearch/showAward?AWD_ID=1632706 |
| 资源类型 | 项目 |
| 条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/341623 |
| 推荐引用方式 GB/T 7714 | Margaret Evans.EAGER: Demographic models of interior western U. S. tree distributions - climate in the context of competition, disturbance, and natural enemies.2016. |
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