| 项目编号: | 1701791
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| 项目名称: | DISSERTATION RESEARCH: The role of rapid adaptation in population establishment |
| 作者: | Jennifer Lau
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| 承担单位: | Michigan State University
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| 批准年: | 2017
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| 开始日期: | 2017-06-15
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| 结束日期: | 2018-05-31
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| 资助金额: | 20135
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| 资助来源: | US-NSF
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| 项目类别: | Standard Grant
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| 国家: | US
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| 语种: | 英语
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| 特色学科分类: | Biological Sciences - Environmental Biology
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| 英文关键词: | rapid adaptation
; project
; adaptation
; role
; work
; establishment
; plant population
; population establishment
; local adaptation
; species
; critical role
; restoration
|
| 英文摘要: | Evolution was once assumed to only occur slowly over long time scales, but many recent studies have found that rapid adaptation (adaptation that occurs over timescales observable by humans) can occur across a wide range of species and in many biological systems, and can affect ecological interactions and processes. Theory predicts that rapid adaptation can also potentially affect the establishment of species in new habitats, but there is little evidence from natural systems to support this. This project will investigate rapid adaptation in recently established plant populations, as well as how symbiotic microbes might influence plant rapid adaptation. By conducting this work at an ecological restoration site, this project will not only expand our understanding of basic ecological processes, but results of the project can be applied to make restorations more successful. This is important, as the restoration of degraded landscapes can play a critical role in biodiversity conservation, yet species sown into restorations often fail to establish. Additionally, this project includes the mentoring of undergraduate students and development of online educational materials for K-12 students.
By using field experiments, reciprocal transplants, and greenhouse studies, this project aims to expand understanding of the role of rapid adaptation in population establishment in several ways. First, although empirical evidence suggests that evolution may occur rapidly enough to influence establishment, few studies consider the demographic effects of adaptation. This study will examine the demographic effects of adaptation in recently established plant populations. Second, this work aims to identify the selective agents and traits responsible for local adaptation, which few studies attempt to do. By combining selection analyses with reciprocal transplant experiments, this study will both predict evolutionary responses and test whether those predicted evolutionary shifts have actually occurred. Finally, this work will investigate the role of microbial mutualists in plant rapid adaptation by examining interactions between legumes and nitrogen-fixing bacteria and how traits mediating interactions with rhizobia have evolved in response to field environments that differ in soil nutrient availability and rhizobium community properties. The results of this work will elucidate the mechanisms underlying the relationship between rapid adaptation and population establishment. |
| 资源类型: | 项目
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/90021
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| Appears in Collections: | 全球变化的国际研究计划
科学计划与规划
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| Recommended Citation: | |
Jennifer Lau. DISSERTATION RESEARCH: The role of rapid adaptation in population establishment. 2017-01-01.
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