DISSERTATION RESEARCH: Comparative phylogeography of neotropical trees

论文研究：新热带树木的比较系统发育地理学

• 批准号: 0808357
• 负责人: James Hamrick
• 金额: $ 0.74万
• 依托单位: University of Georgia Research Foundation Inc
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2008
• 资助国家: 美国
• 起止时间: 2008-05-15 至 2010-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0808357&HistoricalAwards=false
• 关键词: DISSERTATION; RESEARCH; Comparative; phylogeography; neotropical

Climatic and geological change can affect both species and genetic diversity, and the nature of such responses to environmental change has implications for forest structure and adaptive potential and is of importance to conservation measures. In Central America, major geological changes during the uplift of the Panama land-bridge and climate fluctuations during the ice ages may have caused extinctions and re-colonizations of populations. Such events can be reconstructed by examining genetic relationships among current populations. DNA sequencing and fingerprinting techniques will be used to examine genetic patterns of populations of three Central American tree species and determine whether past geological and climatic change had common and significant influences on the trees? diversity and evolutionary history. This study will reveal the impact of past climatic and geological change on Central American forest species. Understanding species? responses to past climate change enables prediction of responses to future climate change, which is particularly critical in this biodiverse and heavily exploited region. The information derived from this project can be used to improve conservation strategies and potentially ameliorate habitat deterioration.

气候和地质变化可影响物种和遗传多样性，对环境变化的这种反应的性质对森林结构和适应潜力有影响，对养护措施很重要。在中美洲，巴拿马陆桥隆起期间的重大地质变化和冰河时期的气候波动可能造成人口迁移和重新定居。这些事件可以通过研究当前种群之间的遗传关系来重建。DNA测序和指纹技术将被用来检查三个中美洲树种种群的遗传模式，并确定过去的地质和气候变化是否对树木产生了共同和重大的影响？多样性和进化史。 这项研究将揭示过去气候和地质变化对中美洲森林物种的影响。了解物种？对过去气候变化的反应能够预测对未来气候变化的反应，这对这一生物多样性和严重开发的区域特别重要。从这个项目中获得的信息可以用来改善保护策略，并可能改善栖息地恶化。