| 项目编号: | 1501676
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| 项目名称: | DISSERTATION RESEARCH: Integrating Biogeography, Cytology, Niche Modeling and Phylogenetics to Understand the Evolutionary History of Endemic Campanula Species in the Mediterranean |
| 作者: | Nico Cellinese
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| 承担单位: | University of Florida
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| 批准年: | 2014
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| 开始日期: | 2015-06-01
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| 结束日期: | 2017-05-31
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| 资助金额: | USD18026
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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: | researcher
; species diversity
; campanula erinus species complex
; conservation effort
; campanula creutzburgii
; future evolutionary study
; campanula erinus complex
; species boundary
; campanula erinus aggregate
; geologic history
; mediterranean biodiversity
; evolutionary history
; evolutionary process
; mediterranean basin
; group
; widespread campanula erinus
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| 英文摘要: | Accurate delimitations and estimates of species diversity are critical aspects for many areas of biology, including biogeography, ecology, and conservation. This research focuses on improving our understanding of species diversity in the Mediterranean Basin - one of the most biologically diverse areas in the world. As threats to biodiversity mount, due mainly to climate change and human pressure, accurate assessments are increasingly important for conservation efforts. To study fine-scale evolution and biogeographic patterns and processes, the researchers have identified a poorly understood group of bellflowers (the Campanula erinus species complex) that can serve as a model for understanding the drivers of evolution in this highly diverse area. This project will focus specifically on inferring the evolutionary history and providing an accurate assessment of species diversity in this group of plants. Results will have important implications for understanding the origins of Mediterranean biodiversity, designing successful conservation efforts, and anticipating possible responses to future climate change.
The researchers will employ a next-generation sequencing approach, involving targeted enrichment of numerous nuclear loci across populations of both the widespread Campanula erinus and the narrow endemic, Campanula creutzburgii. Though sequencing will focus on the Campanula erinus species complex, the nuclear probe set will be designed such that it will be useful across the Campanulaceae (more than 2400 taxa). This targeted sequencing technique, in conjunction with morphological data, and recent coalescent and model-based methods, will serve as a model for future studies integrating traditional systematic and genome-level data for evaluating species boundaries and detecting cryptic speciation in vascular plants. The probe set developed during the course of this study will be made available to the scientific community, facilitating future evolutionary studies within the family. Studying the Campanula erinus complex in a phylogenetic and biogeographic framework will illuminate the drivers of diversification and persistence of species and allow the researchers to relate these mechanisms to factors such as ecology, geologic history, and climatic fluctuations. Three hypotheses will be tested regarding these taxa: i) Cryptic taxonomic diversity is present within the Campanula erinus aggregate; ii) Historical sea level changes contributed to allopatric speciation; iii) Polyploidy (genome duplication) has been an important historical factor in this group and polyploids may represent species distinct from their diploid progenitors. An understanding of these evolutionary processes will be especially critical in this biodiversity hotspot, where conservation efforts are expected to be most challenging but likely give the highest payoff. |
| 资源类型: | 项目
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/94503
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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: | |
Nico Cellinese. DISSERTATION RESEARCH: Integrating Biogeography, Cytology, Niche Modeling and Phylogenetics to Understand the Evolutionary History of Endemic Campanula Species in the Mediterranean. 2014-01-01.
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