| 项目编号: | 1545597
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| 项目名称: | EAGER: Ancestral reconstruction of plasticity along environmental gradients: tracing the pathways to ecological specialization |
| 作者: | Sharon Strauss
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| 承担单位: | University of California-Davis
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| 批准年: | 2014
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| 开始日期: | 2015-08-01
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| 结束日期: | 2018-07-31
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| 资助金额: | USD165200
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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: | ecological specialization
; species
; ancestral trait reconstruction
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| 英文摘要: | Ecological specialization is the engine generating biological diversity. But why do species become specialists on a particular resource or set of conditions rather than expand their niches to become more generalized, incorporating both old and new resources? How does the degree to which species are specialized in their ecological niche predict their geographic range and climatic tolerances? Is the ability to tolerate a large range of environmental and resource conditions (i.e., to be a generalist) a trait that is shared over evolutionary time by species? This project uses cutting edge analytical techniques to map the resilience of multiple plant species onto the pattern of their evolutionary relationships. This will allow researchers to explore how species tolerance to environmental change evolves across related species, whether tolerance to a range of experimental environments predicts the degree to which species are specialized in their current ecological niches, and whether current tolerance can predict species' responses to future changes in the climate. This project also advances education and diversity by training underrepresented groups of students.
This project combines contemporary (ecological experiments/observations) with historical (phylogenetic) approaches to disentangle intrinsic and extrinsic forces driving ecological specialization. Ancestral trait reconstruction of multivariate parameters describing norms of reactions will be completed on multiple plant species. Fitness, in addition to leaf physiology and other plant traits, will be measured in 18 Streptanthoid species grown in environmental treatments that represent gradients in water availability and leaf herbivory. Once completed this project will help us understand how the evolution of plasticity and competitive response relates to specialization. In addition, new methodological approaches should contribute to the study of these questions in a variety of systems across the tree of life. Graduate students from underrepresented groups will contribute directly to this research. |
| 资源类型: | 项目
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/93826
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| Appears in Collections: | 影响、适应和脆弱性
气候减缓与适应
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| Recommended Citation: | |
Sharon Strauss. EAGER: Ancestral reconstruction of plasticity along environmental gradients: tracing the pathways to ecological specialization. 2014-01-01.
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